Wet ball mills are rough on the impact

　　The wet ball mill is coarse mill depending on the impact. It should be ensured that the steel ball and the liner are adhered to a layer of crude particles, which can make the impact in the impact more effectively. Therefore, the coarse grinding should ensure that the high pulp concentration is about 75% to 80%. In fine grinding, the ore itself is very fine, some are suspended. The slurry itself has a large viscosity. The higher concentration of slurry produces a large buoyancy, which has a great influence on fine-grinding small diameter steel balls. The relatively thin pulp concentration should be used, and from about 50% to 65% is sufficient. The wet ball mill rough mill has a wide particle size range, a large grinding ratio, a narrow granular range and a small grinding ratio of the fine grinding treatment. The material processed by the thick rolling mill has a wide particle size, typically having a particle size of about 25 mm, and can reach 20-15 mm. If grinding to 0.15 mm (-0.074 mm is about 80%, the grinding ratio will reach 166-100. Refined ore size is calculated according to 0.30 mm, the product particle size is 0.074mm, you can see the grinding ratio, the coarse grinding ratio is far more In the fine grinding ratio. When the wet ball mill is fine grinding, the intensity of ore particles is high, the broken ore particles are small, the process conditions are difficult to control, the fine grinding process is low, and the power consumption is high. Therefore, improve the fine grinding efficiency for fine grinding It is especially important. The key to improving refining efficiency is to greatly increase the area of ​​the mortar. To do this, just use the reduction of the ball diameter, increase the number of balls. Therefore, for fine grinding, the diameter of the ball should be as possible Small, at the same time, ensure sufficient grinding force. For ore feeds with 0.15 mm, it is sufficient to have a fine grinding ball having a diameter of 8 to 10 mm.