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.
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