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Mill temperature is controlled during cement grinding chiefly to

  • A.keep the clinker from melting in the mill
  • B.reduce the electrical load on the motor
  • C.increase the alkali content of the product
  • D.prevent the gypsum from dehydrating

Answer: D

Water sprays or ventilation hold the temperature below the point at which gypsum loses its water. This is one of the few places in the plant where cooling rather than heating is the concern. Grinding energy nearly all appears in the end as heat.

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