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Processing & Handling :: Solids Handling :: Milling, Grinding & Screening

August 1, 2009

Fine Grinding With Impact Mills

A primer on which mill to use for various types of products

Bodo Furchner, Hosokawa Alpine AG

Many branches of the chemical process industries (CPI) make use of impact comminution to process solid matter, such as minerals, foodstuffs, pharmaceutical products, and above all, products for the chemicals industry. Impact comminution is also used for coarse crushing, but the focus of this article is fine grinding with end-product particle sizes below 500 µm. The technology of impact comminution is, however, not particularly popular with the users of impact grinding systems because it is energy-intensive, associated with a high noise level and frequently also gives rise to time-consuming maintenance work. In spite of this, impact comminution is still the most cost-effective solution in many processing operations....

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