Ball mill is a very important equipment in the mineral processing process. After the treatment and grinding of the ball mill machine, raw ore powder can be obtained or further extracted to concentrate. Moreover, the quality of the grinding effect directly affects the level of the concentration index. So what factors influence the grinding effect of the mineral ball mill?
Influence of ore properties on grinding effect of ball mill
1. Ore particle size: the feeding particle size of the powerful planetary ball mill will obviously affect its processing capacity. When the ore particle size is large, the processing capacity will decrease, otherwise, the processing capacity will increase.
2. Composition of ore particle size: the ore feed of the fine refining ball mill is a mixture of ores with different particle sizes, and the content of fine particles is also different. When the content of fine particles is more, the processing capacity is larger, on the contrary, the processing capacity decreases.
3. Hardness, brittleness, and cleavage of the ore: the lower the hardness, the more brittle, and the more developed the cleavage of the ore fed into the high energy ball milling, the coarser and simpler the disseminated particle size of the useful ore is, the higher the processing capacity is. Otherwise, it is difficult to grind and the production capacity is decreased.
Influence of ball mill structure on grinding effect
1. The model of the ball mill: the overflow type ball mill has uniform particle size, less equipment failure, but low processing capacity. The grid-type ball mill has a large processing capacity and is not easy to produce over-grinding, but there are more wear and failures, which makes the output decrease. The long barrel type ball mill has finer grinding fineness than the short barrel type ball mill, but its processing capacity is lower.
2. The diameter of the ball mill: the larger the diameter of the mining ore stone ball mill, the higher the height of the grinding media being lifted and the greater the impact force, which is beneficial to improve the processing capacity.
Influence of grinding medium on grinding effect of ball mill
1. Material of grinding medium of ball mill: the commonly used grinding media include iron balls, steel balls, steel rods, ceramic balls, rare earth iron balls, etc. The grinding effect of rare earth iron ball is the best, followed by steel ball.
2. Diameter and proportion of grinding medium: the diameter of grinding ball is usually 20-130mm. In addition, the size of ball diameter should be adapted to the specifications of ball mill. The big grinding ball with strong impact force is beneficial to crushing the coarse particles, and the small ball is mainly used for grinding and stripping, which is good for grinding the ore fine. The proportion of various grinding media with different diameters is also one of the important factors affecting the grinding effect, which should be selected appropriately according to the proportion of the ore particle size in the ball mill.
3. The amount of grinding media added: The amount of grinding media added to the ball mill should not be too much or too little. The filling rate of the grinding ball is about 40%-50%, and the filling rate of the grinding rod is 35%-45%.
4. Supplement of grinding media: The grinding media is constantly being worn during the grinding process. It should be supplemented on time and in proportion to each shift, otherwise, it will obviously affect the grinding efficiency of the ball mill.
In addition, the grinding concentration and the rotation number of the ball grinding mill also have a great influence on the grinding effect. Nile Machinery specializes in the research and development and manufacturing of crushers, sand making machines, and industrial grinding and beneficiation equipment. It not only provides customers with the highest quality mechanical equipment but also provides first-class service support and solutions.
