Wear-resistant Ceramic Tube Characteristics
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
With the wide application of abrasion resistant ceramic tube in life, its characteristic is gradually showing:
1. Lined ceramics are of high strength, high hardness and light weight
Centrifugal casting composite ceramics, the alumina layer hardness up to HV1100-1400, the equivalent of tungsten carbide, and the ceramic composite pipe weight is only 1/4 of wear-resistant steel pipe, which is easy to install and replace.
Corundum ceramic Rockwell hardness is HRA80-85, and the hardness is much higher than that of wear-resistant steel and stainless steel. The density is only half of the ceramic pipe sticking steel, and the weight is only 1/3 of wear-resistant steel pipe.
2. Excellent wear resistance, and could be continuously use for more than 10 years.
Wear-resistant elbow centrifugal casting ceramic composite (corundum ceramics) in 9100000 KW units, the use of coal ash up to 45%, each tube feeding powder 42 tons per hour, after 24 months of use wear out 0.2mm, and pneumatic conveying of dry ash, which is 74 tons / hour, the flow rate was 20m/s and the concentration is 28%, which the position is in the gray level corner. After 12 months of wear out 0.15mm wear-resistant elbow on a ceramic sheet, the determination of the Central Institute of Powder Metallurgy Research, 266 times of the wear resistance of manganese steel of special ceramics and 171.5 times of high chromium cast iron, and with excellent wear resistance. Wear-resisting bend in the application of the pulverizing system greatly reduces the wear of equipment. According to the field experience of more than ten years, the durable time is at least 10 years, which can reduce the repair frequency and cost.
3. Smooth inner wall, with no blocking powder
Centrifugal casting ceramic composite belongs to the whole ceramic, there is no gap, and surface is smooth, which does not exist inside the ceramic high bottom view.
By high temperature sintering, the Ceramic plate structure compact, and grinding deburring processing surface finish to ensure smooth transition. The SMT process are in strict accordance with the operating instructions., tiles, the height difference is no more than 0.5mm, mount ceramic pipe inner wall is smooth without blocking powder.
4. Mount firmly, heat resistant and good corrosion resistance
Centrifugal casting ceramic composite, ceramic pipe corundum melting point is 2045 ℃, due to technical reasons of special structure of alumina layer and the steel layer, the stress field is special. When the temperature rises to 900 ℃, then put ceramic tube came into the cold water repeated several times, the ceramic layer does not crack, showing the thermal shock resistance of ordinary ceramic, the ceramic pipe inner compact is the alpha type aluminum oxide, the acid resistance is 96-98%. The aluminum oxidation is neutral oxide, acid, alkali, salt and no chemical reaction. The aluminum oxide is the inorganic substances, the long-term effects of light, heat, oxygen and other natural environments, no bad performance (i.e., the aging problem). By the determination of corrosion resistance of the ceramic pipe, it is ten times higher than that of stainless steel.
2015年7月22日星期三
2015年7月9日星期四
The history of the heat treatment of steel ball
The history of the heat treatment of steel ball
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The history of the heat treatment of steel ball: in 1863, the British metallographer and geologists showed six different microstructure of steel under a microscope, which proved that during heating and cooling, there will be an organizational change in steel, the steel at high temperature phase in the quenched into a hard phase. Allotropic Frenchman Osmond established the theory of iron, and the British Austen first formulated the iron carbon phase diagram. The above two creations initially lay the theoretical foundation for the modern heat treatment process. At the same time, people also study the protection methods of metal in the heating process of metal heat treatment, in order to avoid metal’s oxidation and decarburization in the heating process.
From 1850 to 1880, there had a series of patents for the application of various gases (such as hydrogen, carbon monoxide gas, etc.) to protect the heating. From 1889 to 1890 the British Lake accessed the patent of the bright heat treatment of a variety of metal.
Since twentieth Century, the development of metal physics and the transplantation application of other new technologies make the metal heat treatment process get greater development. A significant development was in 1901 ~ 1925, application of gas carburizing rotary furnace in industrial production; in 1930s dew point potential difference meter appeared, which can control the carbon potential of furnace atmosphere, and later people developed ways to further control the carbon potential atmosphere furnace using carbon dioxide infrared instrument; in 1960s heat treatment technology made the use of plasma field and developed ion nitriding, carburizing process; the application of laser and electron beam technology made the metal gained new surface heat treatment and chemical heat treatment method.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The history of the heat treatment of steel ball: in 1863, the British metallographer and geologists showed six different microstructure of steel under a microscope, which proved that during heating and cooling, there will be an organizational change in steel, the steel at high temperature phase in the quenched into a hard phase. Allotropic Frenchman Osmond established the theory of iron, and the British Austen first formulated the iron carbon phase diagram. The above two creations initially lay the theoretical foundation for the modern heat treatment process. At the same time, people also study the protection methods of metal in the heating process of metal heat treatment, in order to avoid metal’s oxidation and decarburization in the heating process.
From 1850 to 1880, there had a series of patents for the application of various gases (such as hydrogen, carbon monoxide gas, etc.) to protect the heating. From 1889 to 1890 the British Lake accessed the patent of the bright heat treatment of a variety of metal.
Since twentieth Century, the development of metal physics and the transplantation application of other new technologies make the metal heat treatment process get greater development. A significant development was in 1901 ~ 1925, application of gas carburizing rotary furnace in industrial production; in 1930s dew point potential difference meter appeared, which can control the carbon potential of furnace atmosphere, and later people developed ways to further control the carbon potential atmosphere furnace using carbon dioxide infrared instrument; in 1960s heat treatment technology made the use of plasma field and developed ion nitriding, carburizing process; the application of laser and electron beam technology made the metal gained new surface heat treatment and chemical heat treatment method.
2015年7月1日星期三
The history of the heat treatment of steel ball
The history of the heat treatment of steel ball
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The history of the heat treatment of steel ball: in 1863, the British metallographer and geologists showed six different microstructure of steel under a microscope, which proved that during heating and cooling, there will be an organizational change in steel, the steel at high temperature phase in the quenched into a hard phase. Allotropic Frenchman Osmond established the theory of iron, and the British Austen first formulated the iron carbon phase diagram. The above two creations initially lay the theoretical foundation for the modern heat treatment process. At the same time, people also study the protection methods of metal in the heating process of metal heat treatment, in order to avoid metal’s oxidation and decarburization in the heating process.
From 1850 to 1880, there had a series of patents for the application of various gases (such as hydrogen, carbon monoxide gas, etc.) to protect the heating. From 1889 to 1890 the British Lake accessed the patent of the bright heat treatment of a variety of metal.
Since twentieth Century, the development of metal physics and the transplantation application of other new technologies make the metal heat treatment process get greater development. A significant development was in 1901 ~ 1925, application of gas carburizing rotary furnace in industrial production; in 1930s dew point potential difference meter appeared, which can control the carbon potential of furnace atmosphere, and later people developed ways to further control the carbon potential atmosphere furnace using carbon dioxide infrared instrument; in 1960s heat treatment technology made the use of plasma field and developed ion nitriding, carburizing process; the application of laser and electron beam technology made the metal gained new surface heat treatment and chemical heat treatment method.
The Ball Mill Filling Ratio Automatic Detection System
The Ball Mill Filling Ratio Automatic Detection System
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Ball mill is the main equipment of ore dressing process, and it is widely used in mining, metallurgy, building materials, refractory, cement, chemical and thermal power industry.
With the rapid development of all walks of life, the ball mill is used more and more widely. There are many factors affecting the working effect of ball mill, and the grinding ball filling ratio is a major parameter of grinding of ore. In the grinding process, grinding mill is mainly rely on the role of media to complete the grinding task, and whether the medium filling rate is reasonable or not is the first factor to affect productivity. The accurate detection can make the mill capacity and energy efficiency improved obviously on the mill ball loading rate. For ball mill, load detection is usually to be stopped after the mill, open mill shell manhole cover and people entering the mill to obtain measurement and calculation of the filling factor.
If these works are not consistent with the maintenance plan of mills, it will seriously affect the technical and economic index of mill. In the working process of the ball mill, the adding of balls is carried out in advance according to the work plan and this plan is known to be grinding material medium consumption index compiled. Due to the raw material of no stable mechanical properties and medium quality, and the crushing medium unit consumption in the wide range is also changing, which may not be stable. Therefore, in the long time of mill work according to the original plan to maintain the simplified inside medium rate value will be difficult, the result is not the medium rate inadequacy is medium filling rate is too high. Because the major impact of machine inside medium rate of mill power and productivity, the actual production of medium filling rate is difficult in dynamic stability. Therefore, on one hand, according to the dynamic wear medium make the timely, scientific and reasonable way of adding, so that to make medium filling inside the mill rate stable at a reasonable level; on the other hand, it is to find the dynamic parameters of the medium filling rate regular and accurate as well as simple and convenient measuring method to guide the media timely supplement, and the mill power and productivity to maintain high level operation. The main problem of artificial detection is to detect the mill load shut down, and this will affect the continuity of production and product quality, reduce the operation rate of the instability of the mill, and mill frequent startup will also lead to the increase of power consumption. Therefore, the research on a high degree of accuracy and good cost performance of mill medium filling rate automatic detection is very important.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Ball mill is the main equipment of ore dressing process, and it is widely used in mining, metallurgy, building materials, refractory, cement, chemical and thermal power industry.
With the rapid development of all walks of life, the ball mill is used more and more widely. There are many factors affecting the working effect of ball mill, and the grinding ball filling ratio is a major parameter of grinding of ore. In the grinding process, grinding mill is mainly rely on the role of media to complete the grinding task, and whether the medium filling rate is reasonable or not is the first factor to affect productivity. The accurate detection can make the mill capacity and energy efficiency improved obviously on the mill ball loading rate. For ball mill, load detection is usually to be stopped after the mill, open mill shell manhole cover and people entering the mill to obtain measurement and calculation of the filling factor.
If these works are not consistent with the maintenance plan of mills, it will seriously affect the technical and economic index of mill. In the working process of the ball mill, the adding of balls is carried out in advance according to the work plan and this plan is known to be grinding material medium consumption index compiled. Due to the raw material of no stable mechanical properties and medium quality, and the crushing medium unit consumption in the wide range is also changing, which may not be stable. Therefore, in the long time of mill work according to the original plan to maintain the simplified inside medium rate value will be difficult, the result is not the medium rate inadequacy is medium filling rate is too high. Because the major impact of machine inside medium rate of mill power and productivity, the actual production of medium filling rate is difficult in dynamic stability. Therefore, on one hand, according to the dynamic wear medium make the timely, scientific and reasonable way of adding, so that to make medium filling inside the mill rate stable at a reasonable level; on the other hand, it is to find the dynamic parameters of the medium filling rate regular and accurate as well as simple and convenient measuring method to guide the media timely supplement, and the mill power and productivity to maintain high level operation. The main problem of artificial detection is to detect the mill load shut down, and this will affect the continuity of production and product quality, reduce the operation rate of the instability of the mill, and mill frequent startup will also lead to the increase of power consumption. Therefore, the research on a high degree of accuracy and good cost performance of mill medium filling rate automatic detection is very important.
2015年6月25日星期四
Wear-resistant Ceramic Tube Characteristics
Wear-resistant Ceramic Tube Characteristics
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
With the wide application of abrasion resistant ceramic tube in life, its characteristic is gradually showing:
1. Lined ceramics are of high strength, high hardness and light weight
Centrifugal casting composite ceramics, the alumina layer hardness up to HV1100-1400, the equivalent of tungsten carbide, and the ceramic composite pipe weight is only 1/4 of wear-resistant steel pipe, which is easy to install and replace.
Corundum ceramic Rockwell hardness is HRA80-85, and the hardness is much higher than that of wear-resistant steel and stainless steel. The density is only half of the ceramic pipe sticking steel, and the weight is only 1/3 of wear-resistant steel pipe.
2. Excellent wear resistance, and could be continuously use for more than 10 years.
Wear-resistant elbow centrifugal casting ceramic composite (corundum ceramics) in 9100000 KW units, the use of coal ash up to 45%, each tube feeding powder 42 tons per hour, after 24 months of use wear out 0.2mm, and pneumatic conveying of dry ash, which is 74 tons / hour, the flow rate was 20m/s and the concentration is 28%, which the position is in the gray level corner. After 12 months of wear out 0.15mm wear-resistant elbow on a ceramic sheet, the determination of the Central Institute of Powder Metallurgy Research, 266 times of the wear resistance of manganese steel of special ceramics and 171.5 times of high chromium cast iron, and with excellent wear resistance. Wear-resisting bend in the application of the pulverizing system greatly reduces the wear of equipment. According to the field experience of more than ten years, the durable time is at least 10 years, which can reduce the repair frequency and cost.
3. Smooth inner wall, with no blocking powder
Centrifugal casting ceramic composite belongs to the whole ceramic, there is no gap, and surface is smooth, which does not exist inside the ceramic high bottom view.
By high temperature sintering, the Ceramic plate structure compact, and grinding deburring processing surface finish to ensure smooth transition. The SMT process are in strict accordance with the operating instructions., tiles, the height difference is no more than 0.5mm, mount ceramic pipe inner wall is smooth without blocking powder.
4. Mount firmly, heat resistant and good corrosion resistance
Centrifugal casting ceramic composite, ceramic pipe corundum melting point is 2045 ℃, due to technical reasons of special structure of alumina layer and the steel layer, the stress field is special. When the temperature rises to 900 ℃, then put ceramic tube came into the cold water repeated several times, the ceramic layer does not crack, showing the thermal shock resistance of ordinary ceramic, the ceramic pipe inner compact is the alpha type aluminum oxide, the acid resistance is 96-98%. The aluminum oxidation is neutral oxide, acid, alkali, salt and no chemical reaction. The aluminum oxide is the inorganic substances, the long-term effects of light, heat, oxygen and other natural environments, no bad performance (i.e., the aging problem). By the determination of corrosion resistance of the ceramic pipe, it is ten times higher than that of stainless steel.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
With the wide application of abrasion resistant ceramic tube in life, its characteristic is gradually showing:
1. Lined ceramics are of high strength, high hardness and light weight
Centrifugal casting composite ceramics, the alumina layer hardness up to HV1100-1400, the equivalent of tungsten carbide, and the ceramic composite pipe weight is only 1/4 of wear-resistant steel pipe, which is easy to install and replace.
Corundum ceramic Rockwell hardness is HRA80-85, and the hardness is much higher than that of wear-resistant steel and stainless steel. The density is only half of the ceramic pipe sticking steel, and the weight is only 1/3 of wear-resistant steel pipe.
2. Excellent wear resistance, and could be continuously use for more than 10 years.
Wear-resistant elbow centrifugal casting ceramic composite (corundum ceramics) in 9100000 KW units, the use of coal ash up to 45%, each tube feeding powder 42 tons per hour, after 24 months of use wear out 0.2mm, and pneumatic conveying of dry ash, which is 74 tons / hour, the flow rate was 20m/s and the concentration is 28%, which the position is in the gray level corner. After 12 months of wear out 0.15mm wear-resistant elbow on a ceramic sheet, the determination of the Central Institute of Powder Metallurgy Research, 266 times of the wear resistance of manganese steel of special ceramics and 171.5 times of high chromium cast iron, and with excellent wear resistance. Wear-resisting bend in the application of the pulverizing system greatly reduces the wear of equipment. According to the field experience of more than ten years, the durable time is at least 10 years, which can reduce the repair frequency and cost.
3. Smooth inner wall, with no blocking powder
Centrifugal casting ceramic composite belongs to the whole ceramic, there is no gap, and surface is smooth, which does not exist inside the ceramic high bottom view.
By high temperature sintering, the Ceramic plate structure compact, and grinding deburring processing surface finish to ensure smooth transition. The SMT process are in strict accordance with the operating instructions., tiles, the height difference is no more than 0.5mm, mount ceramic pipe inner wall is smooth without blocking powder.
4. Mount firmly, heat resistant and good corrosion resistance
Centrifugal casting ceramic composite, ceramic pipe corundum melting point is 2045 ℃, due to technical reasons of special structure of alumina layer and the steel layer, the stress field is special. When the temperature rises to 900 ℃, then put ceramic tube came into the cold water repeated several times, the ceramic layer does not crack, showing the thermal shock resistance of ordinary ceramic, the ceramic pipe inner compact is the alpha type aluminum oxide, the acid resistance is 96-98%. The aluminum oxidation is neutral oxide, acid, alkali, salt and no chemical reaction. The aluminum oxide is the inorganic substances, the long-term effects of light, heat, oxygen and other natural environments, no bad performance (i.e., the aging problem). By the determination of corrosion resistance of the ceramic pipe, it is ten times higher than that of stainless steel.
2015年6月21日星期日
The Analysis of Work Conditions for Forged Balls and Casting Balls
The Analysis of Work Conditions for Forged Balls and Casting Balls
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Ball mill ball can be divided into two types: forging steel balls and casting steel balls, according to the manufacturing operation. Wet grinding mill work suitablely with forged balls, dry grinding mill work suitablely with casting balls and each kind of balls has its advantages in different working conditions.
1. Casting steel ball:
(1) Roughness surface: pouring mouth parts easily occurs in the use process flat and deformation and out-of-round, influence grinding effect;
(2) Internal loose: because of casting, the ball internal organization large, and during the process, the broken rate is high and the impact toughness is small; the ball greater, the mill is greater, and it has the greater chance of broken;
(3) Not suitable for wet grinding: the casting ball resistance depends on the wear resistance of chromium. The New material grinding balls chromium content higher the wear resistance is higher. But the characteristics of chromium is easy to corrosion, chromium is prone to corrosion, especially in the ore sulfur. Due to the wet grinding conditions, using chromium ball will cause cost increase and yield decrease.
2. Characteristics of forged and hot rolling steel ball:
(1) Smooth surface: using the forging process, no defects on the surface, no deformation, no out of round and keeps the good grinding effect.
(2) Internal close: because of the round steel forging, it avoids the defect of as-cast condition for process, internal density, fine granularity, and enhanced the ball drop resistance and impact toughness, thereby reducing the ball breaking rate.
(3) Can be both dry and wet grinding. Due to new high anti-wear materials of high quality alloy steel and our independent research and development, a reasonable ratio and addition of rare elements of the alloy elements, controlling the content of chromium, so the corrosion resistance is greatly improved. In view of the mine for wet grinding conditions, the steel ball is more suitable for the working condition.
3. If using the semi-autogenous grinding ball with a diameter of 100-150mm steel ball, it can not only reduce the consumption, but also increase the processing capacity. But due to the defects of casting process, casting ball breaking rate is far higher than that of Grinding Ball.
4. Simply, the casting ball are the "hot" resistant ball (suitable for dry grinding), forged ball are the “corrosion" resistant ball (suitable for wet grinding), casting ball for 1.5-3.8m ball mill and forged ball for 1.5-11m ball mill.
Customers need to choose the steel ball according to different conditions, generally speaking, the cement factory for casting balls, and forging balls are suitable for mines, power plants and other industries.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Ball mill ball can be divided into two types: forging steel balls and casting steel balls, according to the manufacturing operation. Wet grinding mill work suitablely with forged balls, dry grinding mill work suitablely with casting balls and each kind of balls has its advantages in different working conditions.
1. Casting steel ball:
(1) Roughness surface: pouring mouth parts easily occurs in the use process flat and deformation and out-of-round, influence grinding effect;
(2) Internal loose: because of casting, the ball internal organization large, and during the process, the broken rate is high and the impact toughness is small; the ball greater, the mill is greater, and it has the greater chance of broken;
(3) Not suitable for wet grinding: the casting ball resistance depends on the wear resistance of chromium. The New material grinding balls chromium content higher the wear resistance is higher. But the characteristics of chromium is easy to corrosion, chromium is prone to corrosion, especially in the ore sulfur. Due to the wet grinding conditions, using chromium ball will cause cost increase and yield decrease.
2. Characteristics of forged and hot rolling steel ball:
(1) Smooth surface: using the forging process, no defects on the surface, no deformation, no out of round and keeps the good grinding effect.
(2) Internal close: because of the round steel forging, it avoids the defect of as-cast condition for process, internal density, fine granularity, and enhanced the ball drop resistance and impact toughness, thereby reducing the ball breaking rate.
(3) Can be both dry and wet grinding. Due to new high anti-wear materials of high quality alloy steel and our independent research and development, a reasonable ratio and addition of rare elements of the alloy elements, controlling the content of chromium, so the corrosion resistance is greatly improved. In view of the mine for wet grinding conditions, the steel ball is more suitable for the working condition.
3. If using the semi-autogenous grinding ball with a diameter of 100-150mm steel ball, it can not only reduce the consumption, but also increase the processing capacity. But due to the defects of casting process, casting ball breaking rate is far higher than that of Grinding Ball.
4. Simply, the casting ball are the "hot" resistant ball (suitable for dry grinding), forged ball are the “corrosion" resistant ball (suitable for wet grinding), casting ball for 1.5-3.8m ball mill and forged ball for 1.5-11m ball mill.
Customers need to choose the steel ball according to different conditions, generally speaking, the cement factory for casting balls, and forging balls are suitable for mines, power plants and other industries.
2015年6月19日星期五
Maintain Proper Working Conditions Can Reduce the Loss of Steel Ball Mill
Maintain Proper Working Conditions Can Reduce the Loss of Steel Ball Mill--Suchuang Machinery Equipment Co., Ltd(skew rolling mill)
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Before selection the minerals must to be first to the crushing and grinding processing, on one hand, make useful mineral and gangue mineral separation; on the other hand, as a result of the election methods have requirements for particle size, after crushing and grinding process the ore can make the particle size to choose the demand, so as to realize the effective separation.
In the working process of the steel ball mill, crushing the ore size on material, at the same time as the material hardness, ball itself will also be worn. In addition, between the steel ball and the steel ball, steel ball and lining board will wear and wear between the steel ball and the ore more. So, it is very necessary to reduce loss of ball mill ball.
There are many aspects in mill steel ball loss, such as ball size, ball movement, the ball ratio and so on; select the appropriate parameters can greatly reduce the steel ball wear. Generally in accordance with the actual work experience, a grinding the ore size, so in the grinding barrel internal to the impact force, should increase the ball size; Selection of Grinding Ball the two section grinding granularity is fine, and should be based on the grinding force mineral, should as far as possible to reduce the size of steel balls. Furthermore, ball charge also has some influence on the steel ball wear, when other conditions are fixed, ball loading rate increases in a certain range, can improve the grinding efficiency, when the ball rate reached 50%, the grinding effect is the best. In actual production, ball loading rate is below 50%, to control the ball rate to a certain extent, also can improve the grinding efficiency, and reduce the steel ball wear. In addition, the steel ball wear is also affected by the mill speed, increased gradually with the mill speed, ball movement by fall to drop, when the rotation speed is constant, the useful power reaches the maximum, then the mill speed increase, will make the steel ball centrifugal movement, not to the grinding effect.
Through the above analysis, premising to the grinding parameters on the ball and reduce loss must consider various factors, and on a regular basis mill overhaul according to the ball mill operation rules; maintenance, avoiding the fault in the work process will influence the normal operation of the plant and causing economic losses.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Before selection the minerals must to be first to the crushing and grinding processing, on one hand, make useful mineral and gangue mineral separation; on the other hand, as a result of the election methods have requirements for particle size, after crushing and grinding process the ore can make the particle size to choose the demand, so as to realize the effective separation.
In the working process of the steel ball mill, crushing the ore size on material, at the same time as the material hardness, ball itself will also be worn. In addition, between the steel ball and the steel ball, steel ball and lining board will wear and wear between the steel ball and the ore more. So, it is very necessary to reduce loss of ball mill ball.
There are many aspects in mill steel ball loss, such as ball size, ball movement, the ball ratio and so on; select the appropriate parameters can greatly reduce the steel ball wear. Generally in accordance with the actual work experience, a grinding the ore size, so in the grinding barrel internal to the impact force, should increase the ball size; Selection of Grinding Ball the two section grinding granularity is fine, and should be based on the grinding force mineral, should as far as possible to reduce the size of steel balls. Furthermore, ball charge also has some influence on the steel ball wear, when other conditions are fixed, ball loading rate increases in a certain range, can improve the grinding efficiency, when the ball rate reached 50%, the grinding effect is the best. In actual production, ball loading rate is below 50%, to control the ball rate to a certain extent, also can improve the grinding efficiency, and reduce the steel ball wear. In addition, the steel ball wear is also affected by the mill speed, increased gradually with the mill speed, ball movement by fall to drop, when the rotation speed is constant, the useful power reaches the maximum, then the mill speed increase, will make the steel ball centrifugal movement, not to the grinding effect.
Through the above analysis, premising to the grinding parameters on the ball and reduce loss must consider various factors, and on a regular basis mill overhaul according to the ball mill operation rules; maintenance, avoiding the fault in the work process will influence the normal operation of the plant and causing economic losses.
2015年6月17日星期三
Selection of Grinding Ball and Ball Mill Lining Plate
Selection of Grinding Ball and Ball Mill Lining Plate
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The grinding ball is widely used at all over the world for high carbon high alloy casting grinding ball and high carbon low alloy forging grinding ball (or cast grinding balls), in the dry production technology of thermal power plant, cement industry, the vast majority of the use of high, low chromium cast iron grinding ball. The wet process mine are in the application of high carbon low alloy grinding ball.
The type of the ball is more, and because of market defects, the use of grinding ball is not according to the technological benefits to decide, randomness. The main varieties of chromium high alloy cast iron. Such as: Cr8, Cr12, Cr15, Cr18, Cr24, Cr26, such as: low chromium cast iron Cr2 and martensitic ductile iron. Martensitic ductile iron and low chromium cast iron on the wear resistance is the same, and the difference between them in the production process. While cast high alloy has excellent anti-wear properties, alloy is higher, and the better anti-wear properties also have good economic benefit. Some people was misunderstanding that high chromium for cement mill application is good, and the power plant does not adapt. Actually the China thermal power plants have extensive use of high chromium good record. In the grinding process of high chromium power plant, cement plant dry tons wear is only 15~50 grams, while using the high chromium it not only cost savings, reduce the labor of workers and the power consumption of mill, but also reduce the waste of resources. It should not hesitate to say that the high chromium can be called the green ball.
Forging ball and rolling balls are of the main varieties of high carbon chromium molybdenum alloy and low carbon manganese alloy. Forging ball and ball rolling process is simple, low manufacturing cost, considering the wet process the economic benefits of mine now generally use low chromium alloy grinding ball, the iron ore, copper, molybdenum mine in wear generally 500~700 grams. To improve the low chromium alloy ball hardness is the most effective way to reduce wear. Due to the production process, forged ball quality should be slightly better than the ball rolling.
If the diameter is more than 110mm, it is suggests adopting high carbon chromium molybdenum alloy forging ball, which is mainly on account of large diameter cast ball broken rate higher. The amount of carbon forged balls is in general about 1%, which chromium content is less than 2%. Low chromium cast ball hardness in general should be about HRC48, which should as far as possible to improve the low chromium cast iron ball hardness, in order to improve the economic benefit. The low chromium cast iron enterprises and India manufacturers’ production of grinding ball hardness should up to HRC55, and the core and surface hardness are rarely. Thermal power plant ball diameter generally do not outweigh the vertebral 60mm. Cement and mine should be carried out according to diameter ball mill lining plate diameter, surface shape and particle size of feed. Gradation only one principle: as far as it is possible to reduce the grinding ball diameter, ball mill grinding machine is, because if rely on it to assume the crushing function, even if is only a small part, it is not appropriate.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The grinding ball is widely used at all over the world for high carbon high alloy casting grinding ball and high carbon low alloy forging grinding ball (or cast grinding balls), in the dry production technology of thermal power plant, cement industry, the vast majority of the use of high, low chromium cast iron grinding ball. The wet process mine are in the application of high carbon low alloy grinding ball.
The type of the ball is more, and because of market defects, the use of grinding ball is not according to the technological benefits to decide, randomness. The main varieties of chromium high alloy cast iron. Such as: Cr8, Cr12, Cr15, Cr18, Cr24, Cr26, such as: low chromium cast iron Cr2 and martensitic ductile iron. Martensitic ductile iron and low chromium cast iron on the wear resistance is the same, and the difference between them in the production process. While cast high alloy has excellent anti-wear properties, alloy is higher, and the better anti-wear properties also have good economic benefit. Some people was misunderstanding that high chromium for cement mill application is good, and the power plant does not adapt. Actually the China thermal power plants have extensive use of high chromium good record. In the grinding process of high chromium power plant, cement plant dry tons wear is only 15~50 grams, while using the high chromium it not only cost savings, reduce the labor of workers and the power consumption of mill, but also reduce the waste of resources. It should not hesitate to say that the high chromium can be called the green ball.
Forging ball and rolling balls are of the main varieties of high carbon chromium molybdenum alloy and low carbon manganese alloy. Forging ball and ball rolling process is simple, low manufacturing cost, considering the wet process the economic benefits of mine now generally use low chromium alloy grinding ball, the iron ore, copper, molybdenum mine in wear generally 500~700 grams. To improve the low chromium alloy ball hardness is the most effective way to reduce wear. Due to the production process, forged ball quality should be slightly better than the ball rolling.
If the diameter is more than 110mm, it is suggests adopting high carbon chromium molybdenum alloy forging ball, which is mainly on account of large diameter cast ball broken rate higher. The amount of carbon forged balls is in general about 1%, which chromium content is less than 2%. Low chromium cast ball hardness in general should be about HRC48, which should as far as possible to improve the low chromium cast iron ball hardness, in order to improve the economic benefit. The low chromium cast iron enterprises and India manufacturers’ production of grinding ball hardness should up to HRC55, and the core and surface hardness are rarely. Thermal power plant ball diameter generally do not outweigh the vertebral 60mm. Cement and mine should be carried out according to diameter ball mill lining plate diameter, surface shape and particle size of feed. Gradation only one principle: as far as it is possible to reduce the grinding ball diameter, ball mill grinding machine is, because if rely on it to assume the crushing function, even if is only a small part, it is not appropriate.
2015年6月16日星期二
Milling and grinding media
Milling and grinding media
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Milling and grinding media are designed for ball milling and the grinding of bulk powder or granular materials into finer powder forms. Ceramic bead, hard metal shot, carbide balls, and other ball-shaped media are used. The hardness of the powder or bulk material to grind determines the selection of the media material. Ball milling processes can disperse or mix pigments or fillers into resins, paints, coatings, plastics, rubber or adhesives.Media grinding is also used to mechanically alloy metal powders, permitting the creation of substances that cannot be formed through other processes. Ball milling media consists of wet, batch units in which water or other liquids and additives aid the grinding process by reducing friction and providing cooling. Ball grinding media uses an abrasive bonded to a wheel, belt, or disc to remove material and improve surface finish. Media mills are also used to disperse powder into a liquid product such as pigment in a paint base.
There are many types of milling and grinding media. Examples include alumina grinding media and chrome grinding media. Alumina grinding media is high-density, and ultra-high fired. It is ideal for wet or dry milling. Chrome grinding media is a high density, very hard product suitable for grinding and milling. Alumina grinding media and chrome grinding media are non-conductive, non-magnetic, tough, hard, non-porous, chip resistant, and easy to clean. Alumina grinding media and chrome grinding media are unaffected by most acids or alkali. They have excellent resistance to mechanical and thermal shock. Ball milling and grinding media can also use hardened steel balls (shots, beads) which are available in different hardnesses in both high-carbon steel and chrome alloy steel. Linear ball mill grinding uses a linear model of balance and substitution for the real distribution for the time of grain processing inside the mill, which is a combination of ideal extrusion and ideal mixing.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Milling and grinding media are designed for ball milling and the grinding of bulk powder or granular materials into finer powder forms. Ceramic bead, hard metal shot, carbide balls, and other ball-shaped media are used. The hardness of the powder or bulk material to grind determines the selection of the media material. Ball milling processes can disperse or mix pigments or fillers into resins, paints, coatings, plastics, rubber or adhesives.Media grinding is also used to mechanically alloy metal powders, permitting the creation of substances that cannot be formed through other processes. Ball milling media consists of wet, batch units in which water or other liquids and additives aid the grinding process by reducing friction and providing cooling. Ball grinding media uses an abrasive bonded to a wheel, belt, or disc to remove material and improve surface finish. Media mills are also used to disperse powder into a liquid product such as pigment in a paint base.
There are many types of milling and grinding media. Examples include alumina grinding media and chrome grinding media. Alumina grinding media is high-density, and ultra-high fired. It is ideal for wet or dry milling. Chrome grinding media is a high density, very hard product suitable for grinding and milling. Alumina grinding media and chrome grinding media are non-conductive, non-magnetic, tough, hard, non-porous, chip resistant, and easy to clean. Alumina grinding media and chrome grinding media are unaffected by most acids or alkali. They have excellent resistance to mechanical and thermal shock. Ball milling and grinding media can also use hardened steel balls (shots, beads) which are available in different hardnesses in both high-carbon steel and chrome alloy steel. Linear ball mill grinding uses a linear model of balance and substitution for the real distribution for the time of grain processing inside the mill, which is a combination of ideal extrusion and ideal mixing.
2015年6月14日星期日
Effects of Alloying Elements in Chrome Steel Balls（2）
Effects of Alloying Elements in Chrome Steel Balls（2）
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com skewrollingmill@yeah.net
Manganese
Manganese slightly increases the strength of ferrite, and also increases the hardness penetration of steel.
Chromium
Chromium (Cr) has a tendency to increase hardness penetration. Chromium can also increase the toughness and wear resistance of steel. Probably one of the most well known effects of chromium on steel is the tendency to resist staining and corrosion. Steels with 12% or more chromium are referred to as stainless steels.
Silicon
Silicon is used as a deoxidizer in the manufacture of steel. It slightly increases the strength of ferrite, and when used in conjunction with other alloys can help increase the toughness and hardness penetration of steel.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com skewrollingmill@yeah.net
Manganese
Manganese slightly increases the strength of ferrite, and also increases the hardness penetration of steel.
Chromium
Chromium (Cr) has a tendency to increase hardness penetration. Chromium can also increase the toughness and wear resistance of steel. Probably one of the most well known effects of chromium on steel is the tendency to resist staining and corrosion. Steels with 12% or more chromium are referred to as stainless steels.
Silicon
Silicon is used as a deoxidizer in the manufacture of steel. It slightly increases the strength of ferrite, and when used in conjunction with other alloys can help increase the toughness and hardness penetration of steel.
2015年6月11日星期四
The Processes of Matching the Proper Grinding Balls for Ball Grinder
The Processes of Matching the Proper Grinding Balls for Ball Grinder
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The grinding ball is a material grinding media of ball mill and coal mill. Its' function is as an important component of ball mill under grinding and cutting effect brought by the friction between grinding balls and materials.Therefore,let's talk about the processes of matching the proper grinding balls for ball grinder.
1. With effective surface area of steel balls to measure the rationality of the steel ball ratio. A warehouse in effective surface area of steel balls should achieve every ton of steel balls 9.5-10.5 m2. For with the roller press of closed circuit ball mill, this value can be adjusted for 12 m2/t, and the liner plate is continuous ascension type. The balls in the specific surface area should be 35-38 m2/t, belt roller pressure unit for 38-40 m2/t. The ratio of specific various balls diameter still according to the maximum stacking density calculation.
2.Generally, the load rate is 25% -35% in the filling space of abrasion resistance steel balls, the lower loading rate of steel ball, the less of power consumption, and the productivity is getting low. Therefore, the primary prerequisite of the total count of adding grinding media is that the ball weight and the weight of the material in the mills is less than the allowable value and close to the ball mill motor power.
3. Conforming to the loading principle on grinding balls in the main warehouse. The size of feeding clinker particle in the first warehouse is not more than 30 mm, so it's main function is broken, and the diameter of Steel balls loaded should be in 50 between 90 mm. When into the second warehouse of ball grinding mill, the clinker are less than 2-3 mm, so it is the function of fine grinding, steel balls' range in this warehouse should be 15-50 mm.
4. Computing unit ball production to verify the rationality of the match ball.
5. Determining the maximum diameter of the grinding media.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com) is a professional skew rolling mill manufacturer in China, the diameter of our steel balls span from 20mm-150mm. Priorities of our steel balls: High hardness, good wear resistance, breakage rate lower than 0.5%, no deformation all through.
2015年6月9日星期二
The Processes of Matching the Proper Grinding Balls for Ball Grinder
The Processes of Matching the Proper Grinding Balls for Ball Grinder
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The grinding ball is a material grinding media of ball mill and coal mill. Its' function is as an important component of ball mill under grinding and cutting effect brought by the friction between grinding balls and materials.Therefore,let's talk about the processes of matching the proper grinding balls for ball grinder.
1. With effective surface area of steel balls to measure the rationality of the steel ball ratio. A warehouse in effective surface area of steel balls should achieve every ton of steel balls 9.5-10.5 m2. For with the roller press of closed circuit ball mill, this value can be adjusted for 12 m2/t, and the liner plate is continuous ascension type. The balls in the specific surface area should be 35-38 m2/t, belt roller pressure unit for 38-40 m2/t. The ratio of specific various balls diameter still according to the maximum stacking density calculation.
2.Generally, the load rate is 25% -35% in the filling space of abrasion resistance steel balls, the lower loading rate of steel ball, the less of power consumption, and the productivity is getting low. Therefore, the primary prerequisite of the total count of adding grinding media is that the ball weight and the weight of the material in the mills is less than the allowable value and close to the ball mill motor power.
3. Conforming to the loading principle on grinding balls in the main warehouse. The size of feeding clinker particle in the first warehouse is not more than 30 mm, so it's main function is broken, and the diameter of Steel balls loaded should be in 50 between 90 mm. When into the second warehouse of ball grinding mill, the clinker are less than 2-3 mm, so it is the function of fine grinding, steel balls' range in this warehouse should be 15-50 mm.
4. Computing unit ball production to verify the rationality of the match ball.
5. Determining the maximum diameter of the grinding media.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com) is a professional skew rolling mill manufacturer in China, the diameter of our steel balls span from 20mm-150mm. Priorities of our steel balls: High hardness, good wear resistance, breakage rate lower than 0.5%, no deformation all through.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The grinding ball is a material grinding media of ball mill and coal mill. Its' function is as an important component of ball mill under grinding and cutting effect brought by the friction between grinding balls and materials.Therefore,let's talk about the processes of matching the proper grinding balls for ball grinder.
1. With effective surface area of steel balls to measure the rationality of the steel ball ratio. A warehouse in effective surface area of steel balls should achieve every ton of steel balls 9.5-10.5 m2. For with the roller press of closed circuit ball mill, this value can be adjusted for 12 m2/t, and the liner plate is continuous ascension type. The balls in the specific surface area should be 35-38 m2/t, belt roller pressure unit for 38-40 m2/t. The ratio of specific various balls diameter still according to the maximum stacking density calculation.
2.Generally, the load rate is 25% -35% in the filling space of abrasion resistance steel balls, the lower loading rate of steel ball, the less of power consumption, and the productivity is getting low. Therefore, the primary prerequisite of the total count of adding grinding media is that the ball weight and the weight of the material in the mills is less than the allowable value and close to the ball mill motor power.
3. Conforming to the loading principle on grinding balls in the main warehouse. The size of feeding clinker particle in the first warehouse is not more than 30 mm, so it's main function is broken, and the diameter of Steel balls loaded should be in 50 between 90 mm. When into the second warehouse of ball grinding mill, the clinker are less than 2-3 mm, so it is the function of fine grinding, steel balls' range in this warehouse should be 15-50 mm.
4. Computing unit ball production to verify the rationality of the match ball.
5. Determining the maximum diameter of the grinding media.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com) is a professional skew rolling mill manufacturer in China, the diameter of our steel balls span from 20mm-150mm. Priorities of our steel balls: High hardness, good wear resistance, breakage rate lower than 0.5%, no deformation all through.
Drawbacks of the Casting ball
Drawbacks of the Casting ball
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com skewrollingmill@yeah.net
Drawbacks of the Casting ball process £º
1.Casting ball is made of by pig iron, adding amount of (13-28%) Chrome could be required the steel ball for ball mill.
2.Casting ball loose organization, coarse grains, poor ware resistance and impact thoughness(3-7J/cm3), breakage rare exceed 3%
3.High energy consumption, heavily polluted and labor intensity high, low productivity
4.the cost of raw material and wages are high, especially below dia 50mm
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com skewrollingmill@yeah.net
Drawbacks of the Casting ball process £º
1.Casting ball is made of by pig iron, adding amount of (13-28%) Chrome could be required the steel ball for ball mill.
2.Casting ball loose organization, coarse grains, poor ware resistance and impact thoughness(3-7J/cm3), breakage rare exceed 3%
3.High energy consumption, heavily polluted and labor intensity high, low productivity
4.the cost of raw material and wages are high, especially below dia 50mm
2015年6月5日星期五
Hot rolled steel ball technology
Hot rolled steel ball technology:Ball diameter range Φ20-Φ150mm. Rolling ball milling is used in a variety of chemical composition billets rolled round bars, its diameter is equal to the nominal diameter of the ball. The main production process of hot rolling steel ball as follows:1, After the round bar examination, by length cut into steel ball billet.2, The steel billet heated to a suitable temperature in a continuous heating furnace before rolling.3, After the red-hot state steel billet feeding into the ball mill, forward rotation in between special spiral grooved rollers, and is continuously rolled into a ball. Each steel skew ball mill can roll 60-360 steel ball per minute.4, The red hot ball rolled into special designed online heating treatment furnace for quenching – tempering heat treatment, so can get high uniform hardness ball.5, After inspection steel balls sent to the finished goods warehouse, after packaging then sent to customers.
2015年6月4日星期四
Main processes of hot rolling grinding balls as follows
Main processes of hot rolling grinding balls as follows
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Main processes of hot rolling grinding balls as follows:
1.the raw material of rolling ball is round bar with all kind of chemicals; the diameter is same as the nominal diameter of the steel ball.
2.round bar is heated in the modern continuous furnace.
3.the heating bar sent to the rolling mill, and go ahead between two screw rolls. Then steel ball will be rolled on the two rolls. One rolling mill can roll 60-360 pcs/min
4. heat treatment---The process of grinding ball heat treatment to the required hardness takes place in the modern furnace, in junction with large-capacity quenching vessel.
5. finished steel ball with precise dimensions, good geometric shape, good wear resistance and mechanical properties.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Main processes of hot rolling grinding balls as follows:
1.the raw material of rolling ball is round bar with all kind of chemicals; the diameter is same as the nominal diameter of the steel ball.
2.round bar is heated in the modern continuous furnace.
3.the heating bar sent to the rolling mill, and go ahead between two screw rolls. Then steel ball will be rolled on the two rolls. One rolling mill can roll 60-360 pcs/min
4. heat treatment---The process of grinding ball heat treatment to the required hardness takes place in the modern furnace, in junction with large-capacity quenching vessel.
5. finished steel ball with precise dimensions, good geometric shape, good wear resistance and mechanical properties.
2015年6月3日星期三
Four Principles of Mill and Ball Ratio
Four Principles of Mill and Ball Ratio
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The Collocation between steel ball and ball mill exist certain principles. So, what are these principles?
1, According to the power of the main motor of ball mill ball allowed determining the amount. Fill space load rate is in commonly 25% - 35%, ball load rate is low and the power consumption is also reduced, but the productivity is low. Therefore, prerequisite of verify the total weight is to add the steel ball and material in the mill and the weight is less than allowable value close to the ball mill and motor power.
2, Determine the maximum steel ball diameter.
3, Measure the ball ratio and steel ball surface area to reach the rationality. The warehouse steel ball surface area of steel per ton reach 9.5 - 10.5m2, for closed-circuit ball milling with roller press, this value can be adjusted to 12 - 14m2/t steel ball. The liner is a continuous improvement. The ball into the two bins in the specific surface area is 35 - 38m2/t steel ball; with roller press is 38 - 40m2/t steel ball. The entire specific ball diameter ratio still should be calculated in terms of the maximum packing density.
4, Match with the principle of ball main functions of each bin the ball, and combined with the liner type. A barn feeding clinker particles up to 30mm, and all its main role is to broken. So, the diameter of the steel ball load should be between 50 to 90mm. Clinker into the ball mill chamber second is less than 2-3mm, Dry Ball Mill Introductionso it is the role of fine grinding, which the storehouse ball range should be 15 - 50mm. Because the fine grinding is grinding and with a single size ball (20 - 25mm), which lined a single waveform lining board can achieve the highest efficiency. If the two cabins can still choose a certain range of steel ball diameter, it can adopt grading lining plate and let the ball near the partition board, small ball in the discharge end.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The Collocation between steel ball and ball mill exist certain principles. So, what are these principles?
1, According to the power of the main motor of ball mill ball allowed determining the amount. Fill space load rate is in commonly 25% - 35%, ball load rate is low and the power consumption is also reduced, but the productivity is low. Therefore, prerequisite of verify the total weight is to add the steel ball and material in the mill and the weight is less than allowable value close to the ball mill and motor power.
2, Determine the maximum steel ball diameter.
3, Measure the ball ratio and steel ball surface area to reach the rationality. The warehouse steel ball surface area of steel per ton reach 9.5 - 10.5m2, for closed-circuit ball milling with roller press, this value can be adjusted to 12 - 14m2/t steel ball. The liner is a continuous improvement. The ball into the two bins in the specific surface area is 35 - 38m2/t steel ball; with roller press is 38 - 40m2/t steel ball. The entire specific ball diameter ratio still should be calculated in terms of the maximum packing density.
4, Match with the principle of ball main functions of each bin the ball, and combined with the liner type. A barn feeding clinker particles up to 30mm, and all its main role is to broken. So, the diameter of the steel ball load should be between 50 to 90mm. Clinker into the ball mill chamber second is less than 2-3mm, Dry Ball Mill Introductionso it is the role of fine grinding, which the storehouse ball range should be 15 - 50mm. Because the fine grinding is grinding and with a single size ball (20 - 25mm), which lined a single waveform lining board can achieve the highest efficiency. If the two cabins can still choose a certain range of steel ball diameter, it can adopt grading lining plate and let the ball near the partition board, small ball in the discharge end.
2015年6月1日星期一
Main processes of hot rolling grinding balls as follows
Main processes of hot rolling grinding balls as follows
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Main processes of hot rolling grinding balls as follows:
1.the raw material of rolling ball is round bar with all kind of chemicals; the diameter is same as the nominal diameter of the steel ball.
2.round bar is heated in the modern continuous furnace.
3.the heating bar sent to the rolling mill, and go ahead between two screw rolls. Then steel ball will be rolled on the two rolls. One rolling mill can roll 60-360 pcs/min
4. heat treatment---The process of grinding ball heat treatment to the required hardness takes place in the modern furnace, in junction with large-capacity quenching vessel.
5. finished steel ball with precise dimensions, good geometric shape, good wear resistance and mechanical properties.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Main processes of hot rolling grinding balls as follows:
1.the raw material of rolling ball is round bar with all kind of chemicals; the diameter is same as the nominal diameter of the steel ball.
2.round bar is heated in the modern continuous furnace.
3.the heating bar sent to the rolling mill, and go ahead between two screw rolls. Then steel ball will be rolled on the two rolls. One rolling mill can roll 60-360 pcs/min
4. heat treatment---The process of grinding ball heat treatment to the required hardness takes place in the modern furnace, in junction with large-capacity quenching vessel.
5. finished steel ball with precise dimensions, good geometric shape, good wear resistance and mechanical properties.
2015年5月29日星期五
Four Principles of Mill and Ball Ratio
Four Principles of Mill and Ball Ratio
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The Collocation between steel ball and ball mill exist certain principles. So, what are these principles?
1, According to the power of the main motor of ball mill ball allowed determining the amount. Fill space load rate is in commonly 25% - 35%, ball load rate is low and the power consumption is also reduced, but the productivity is low. Therefore, prerequisite of verify the total weight is to add the steel ball and material in the mill and the weight is less than allowable value close to the ball mill and motor power.
2, Determine the maximum steel ball diameter.
3, Measure the ball ratio and steel ball surface area to reach the rationality. The warehouse steel ball surface area of steel per ton reach 9.5 - 10.5m2, for closed-circuit ball milling with roller press, this value can be adjusted to 12 - 14m2/t steel ball. The liner is a continuous improvement. The ball into the two bins in the specific surface area is 35 - 38m2/t steel ball; with roller press is 38 - 40m2/t steel ball. The entire specific ball diameter ratio still should be calculated in terms of the maximum packing density.
4, Match with the principle of ball main functions of each bin the ball, and combined with the liner type. A barn feeding clinker particles up to 30mm, and all its main role is to broken. So, the diameter of the steel ball load should be between 50 to 90mm. Clinker into the ball mill chamber second is less than 2-3mm, Dry Ball Mill Introductionso it is the role of fine grinding, which the storehouse ball range should be 15 - 50mm. Because the fine grinding is grinding and with a single size ball (20 - 25mm), which lined a single waveform lining board can achieve the highest efficiency. If the two cabins can still choose a certain range of steel ball diameter, it can adopt grading lining plate and let the ball near the partition board, small ball in the discharge end.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
The Collocation between steel ball and ball mill exist certain principles. So, what are these principles?
1, According to the power of the main motor of ball mill ball allowed determining the amount. Fill space load rate is in commonly 25% - 35%, ball load rate is low and the power consumption is also reduced, but the productivity is low. Therefore, prerequisite of verify the total weight is to add the steel ball and material in the mill and the weight is less than allowable value close to the ball mill and motor power.
2, Determine the maximum steel ball diameter.
3, Measure the ball ratio and steel ball surface area to reach the rationality. The warehouse steel ball surface area of steel per ton reach 9.5 - 10.5m2, for closed-circuit ball milling with roller press, this value can be adjusted to 12 - 14m2/t steel ball. The liner is a continuous improvement. The ball into the two bins in the specific surface area is 35 - 38m2/t steel ball; with roller press is 38 - 40m2/t steel ball. The entire specific ball diameter ratio still should be calculated in terms of the maximum packing density.
4, Match with the principle of ball main functions of each bin the ball, and combined with the liner type. A barn feeding clinker particles up to 30mm, and all its main role is to broken. So, the diameter of the steel ball load should be between 50 to 90mm. Clinker into the ball mill chamber second is less than 2-3mm, Dry Ball Mill Introductionso it is the role of fine grinding, which the storehouse ball range should be 15 - 50mm. Because the fine grinding is grinding and with a single size ball (20 - 25mm), which lined a single waveform lining board can achieve the highest efficiency. If the two cabins can still choose a certain range of steel ball diameter, it can adopt grading lining plate and let the ball near the partition board, small ball in the discharge end.
2015年5月28日星期四
What is the Grinding Ball
What is the Grinding Ball
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Grinding ball material mostly are alumina and zirconia which mainly used in chemical and mechanical grinding powder, and the sample particles by grinding particle diameter is smaller.
Refers to the bauxite, roller powder, industrial alumina, high temperature calcinations Alfa alumina powder as the raw material, after mixing, grinding, milling (pulp, making mud), forming, drying, sintering processes is made, and mainly used as grinding media and widely use of ball. According to the alumina content of different, it can be divided into the aluminum ball, high aluminum ball and high alumina ball. Generally the 60% - 65% alumina content of zoned are regarded as aluminum ball, 75% - 80% of alumina content is called high aluminum ball, 90% alumina content of high alumina ball. The high aluminum ball is subdivided into 90 porcelain, 92 porcelain, and 95, 99 porcelain. Because of its high production cost, the 99 porcelain has a few large manufacturers choose to mass production, and mainly made by part of special ceramics factory by handmade. Due to the lower price of the aluminum ball and high alumina ball, and accepted by most of the ceramic factory, which mainly used for grinding ceramic blank. High alumina ball because of its high strength, high hardness, high wear resistance, thick and hard material finishing and deep processing of heavy, small volume, high temperature resistance, corrosion resistance, no pollution and other excellent properties, it is widely used in different types of ceramic, enamel, glass, chemicals and other plants, especially the 92 content alumina balls were most commonly used.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Grinding ball material mostly are alumina and zirconia which mainly used in chemical and mechanical grinding powder, and the sample particles by grinding particle diameter is smaller.
Refers to the bauxite, roller powder, industrial alumina, high temperature calcinations Alfa alumina powder as the raw material, after mixing, grinding, milling (pulp, making mud), forming, drying, sintering processes is made, and mainly used as grinding media and widely use of ball. According to the alumina content of different, it can be divided into the aluminum ball, high aluminum ball and high alumina ball. Generally the 60% - 65% alumina content of zoned are regarded as aluminum ball, 75% - 80% of alumina content is called high aluminum ball, 90% alumina content of high alumina ball. The high aluminum ball is subdivided into 90 porcelain, 92 porcelain, and 95, 99 porcelain. Because of its high production cost, the 99 porcelain has a few large manufacturers choose to mass production, and mainly made by part of special ceramics factory by handmade. Due to the lower price of the aluminum ball and high alumina ball, and accepted by most of the ceramic factory, which mainly used for grinding ceramic blank. High alumina ball because of its high strength, high hardness, high wear resistance, thick and hard material finishing and deep processing of heavy, small volume, high temperature resistance, corrosion resistance, no pollution and other excellent properties, it is widely used in different types of ceramic, enamel, glass, chemicals and other plants, especially the 92 content alumina balls were most commonly used.
2015年5月27日星期三
Introduction of some mineral processing equipment for Iron ore reported by wear-resistant steel ball factory supplier
Introduction of some mineral processing equipment for Iron ore reported by wear-resistant steel ball factory supplier
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Wear-resistant steel ball factory not only provide wear-resistant steel ball price, ball rolling and forging ball but also often introduce mineral processing equipment for Iron ore. It includes iron ore crushing equipment, wet cleaning equipment, dry separation equipment, grinding equipment, high-frequency screen and filtration equipment. The following are the brief introduction on the part of the equipment. According to the strength of the magnetic field, mineral processing equipment can be divided into strong magnetic and weak magnetic dry separator. Strong magnetic dry separator can reduce the run tail, but cannot improve the grade. Weak magnetic dry separator can effectively improve the grade; it will increase the amount of running tail. grinding balls In some areas, Iron ore beneficiation factories coarse and dry non- fully broken ore, the result is a lot of running tail and the loss of resources is very serious. A strong magnetic dry separation of low taste, large size, and increases the work load of the ball mill, also caused a lot of useless grinding operation. The process design of the iron ore field needs to be improved a certain process. Ball mill is the main iron ore grinding equipment generally. In the iron ore grinding process, grinding design has two sections; there are also designs of single stage grinding. Two sections or single stage depends mainly on the Characteristics of iron ore. For the relatively low hardness smaller particle of iron ore, design principles can be used single ball mill. Conversely, the higher hardness, size large iron ore needs to process using two ball mill designs.
After enrichment dry separation machine, the taste of Iron ore has been increased to about 16%.Grinding Ball After the grinding mill, we using the iron ore wet cleaning equipment further improve the iron enrichment. We can also remove impurity magnetic powder. As the ball after some iron ore size still not meet the requirements, we also need to use high frequency sieve for screening. We will repeat processing material not meet the size requirements after which go to the ball mill. Iron ore wet cleaning device can be just first level, second level third level configuration principle, in order to obtain the maximum lifting and lowering run taste and tail loss.
Suchuang Machinery Equipment Co., Ltd(http://www.skewrollingmill.com)
Email: info@skewrollingmill.com
Wear-resistant steel ball factory not only provide wear-resistant steel ball price, ball rolling and forging ball but also often introduce mineral processing equipment for Iron ore. It includes iron ore crushing equipment, wet cleaning equipment, dry separation equipment, grinding equipment, high-frequency screen and filtration equipment. The following are the brief introduction on the part of the equipment. According to the strength of the magnetic field, mineral processing equipment can be divided into strong magnetic and weak magnetic dry separator. Strong magnetic dry separator can reduce the run tail, but cannot improve the grade. Weak magnetic dry separator can effectively improve the grade; it will increase the amount of running tail. grinding balls In some areas, Iron ore beneficiation factories coarse and dry non- fully broken ore, the result is a lot of running tail and the loss of resources is very serious. A strong magnetic dry separation of low taste, large size, and increases the work load of the ball mill, also caused a lot of useless grinding operation. The process design of the iron ore field needs to be improved a certain process. Ball mill is the main iron ore grinding equipment generally. In the iron ore grinding process, grinding design has two sections; there are also designs of single stage grinding. Two sections or single stage depends mainly on the Characteristics of iron ore. For the relatively low hardness smaller particle of iron ore, design principles can be used single ball mill. Conversely, the higher hardness, size large iron ore needs to process using two ball mill designs.
After enrichment dry separation machine, the taste of Iron ore has been increased to about 16%.Grinding Ball After the grinding mill, we using the iron ore wet cleaning equipment further improve the iron enrichment. We can also remove impurity magnetic powder. As the ball after some iron ore size still not meet the requirements, we also need to use high frequency sieve for screening. We will repeat processing material not meet the size requirements after which go to the ball mill. Iron ore wet cleaning device can be just first level, second level third level configuration principle, in order to obtain the maximum lifting and lowering run taste and tail loss.
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