| 摘要 |
A material reducing mill having a construction which operates to create a circulation of material in the mill to effect a thorough reduction of material added to the material undergoing reduction. The mill is further constructed with a rotary device which is associated with an external collection system, which device constantly samples the circulation in the mill so as to withdraw that portion which can be fed into the collection system. Furthermore, the external collection system is provided with sensors which are adapted to regulate the circulation of the material intended to be reduced to micron size portions.
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