What effect does the grain size of the grinding mill have on the grinding machine production capacity and product quality?

When we require the same fineness of the grinding products, then the larger the grain size of the ore, the lower the mill production capacity, the smaller the grain size and the higher the production capacity. The main reason is that the ore size is small, the ore stays in the mill for a short time and the speed is fast.

However, it should be noted that when the grinding product is required to be coarse, the mill productivity will vary with the ore particle size, and when the grinding product is required to be fine, the mill productivity will not be prominent with the ore particle size change. .

When the grain size of the ore is small, the fineness of the grinding is relatively easy to achieve. However, the fineness and productivity are contradictory. When the ore size is the same, the mill production capacity decreases as the fineness of the grinding product increases. The finer the grinding product is required, the more the productivity drops. However, for the rough grinding process, the change in the fineness of the grinding product has no obvious effect on the mill productivity.

Therefore, in the production according to the size of the plant and the nature of the ore, it should find the most suitable mill feed size. Refer to Table 4.

Suitable grinding machine feeding size Table 4

Beneficiation plant scale (tons / day)

Suitable feed size (mm)

500

2500

10000

40000

10-15

6-12

5-10

4-8

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