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Coarse quartz particles in a raw meal are particularly troublesome because they

  • A.increase the alkali content of the clinker
  • B.react slowly and leave free lime nearby
  • C.melt before any other component does
  • D.prevent the meal from being conveyed

Answer: B

Silica in the form of large quartz grains dissolves much more slowly than finely divided silica from clay. The lime that should have combined with it is left free, so meal fineness and quartz content are watched together.

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