2. vibrating feeder + jaw crusher(coarse crushing) + impact crusher (for secondary crushing) + vibrating screen + belt conveyor +control system.
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Besides, for high-speed rotated ball mill, we should also adopt flat lining board. In this case, flat lining board is particularly suitable for fine grinding chamber in ball mill.In fine grinding chamber, it is mainly grinding force for raw materials, so the lifting power of lining board can be relatively smaller in order to strengthen the grinding and friction for raw materials.
It is suitable for screening medium particles. Grate gate aperture is undersize material particle size of 1. Aperture generally is 10 ~ 80 mm. Mesh by steel wire woven or welded and the hole shows square, rectangular or elongated. Plate screen made of steel plate punching and the hole is round, square or rectangular.1 ~ 1.Grate bar is suitable for screening large particle materials. Plate screen using life is longer and is not easy to jam. The advantage of mesh is effective area is larger.2 times, which usually should not be less than 50 mm. It is commonly used aperture is 6 ~ 85 millimeter and rectangular mesh is suitable for screening the wet material.
In an embodiment of the invention the method further comprises a step of measuring feed quantity coming from the cyclone and adjusting the mill shaft speed to reach target energy per total feed flow.
On the contrary, the separation efficiency of coarse particle without adequate liberation is limited as well .Mineral liberation is closely related to the particle size in the flotation process of actual phosphate ores. Therefore, the effective liberation of desired minerals as well as avoid overgrinding of ores is of great importance for the subsequent flotation process. However, there is a certain conflict between liberation and particle size for the beneficiation of fine-grained phosphate rocks because fine grinding is desired to achieve a higher liberation degree and the obtained fine particles will adversely affect the separation efficiency.
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