形成闭路多次循环，由筛分设备控制达到所要求的粒度。

The formation of many closed loop control by the screening equipment to achieve the required size.

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分离粒度是筛分作业最重要的指标。

Separation size is an important index in material screening operation.

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最后，就是破碎的粒度十分的严格，因为细碎并筛分之后直接进入发生器进行化合。

Finally, is broken granularity very strict, because after finely and screening directly into the generator are combined.

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