Cage mills offer high-size reduction ratios after a single pass

By |  July 2, 2015

Stedman Machine Co. is promoting its “One-N-Done” cage mill line by re-educating process engineers about the design aspects of cage mills. Cage mills are capable of high-ratio size reduction with no decrease in the quality of the product, even after long periods of operation. High size reduction ratios offer cost savings in handling, maintenance and wear parts. Cage mills reduce materials by impact using nested cages with rows of impact bars. The cages, consisting of two, four or six rows, are arranged concentrically, with each row spinning in the opposite direction. The material is fed into the center of the innermost cage, where it is struck by spinning rows of cage pins and distributed 360 degrees around the cage. Properly presetting the speed of the cages allows the succeeding rows, moving from the innermost outward, to act principally on the particles that have not yet been reduced to the desired size.

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