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The device that separates fine product from coarse material in a grinding circuit is a

  • A.clinker cooler
  • B.preheater cyclone stage
  • C.rotary kiln section
  • D.classifier or separator

Answer: D

It divides the mill discharge into a fine product that leaves the circuit and a coarse reject that returns for further grinding. The cooler, preheater and kiln all belong to the pyroprocessing side of the plant rather than to grinding.

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