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A precalciner added to a preheater kiln performs

  • A.most of the calcination before the kiln
  • B.the whole of the clinkering reaction
  • C.the grinding of the clinker
  • D.the cooling of the clinker leaving the kiln

Answer: A

Firing fuel in the calciner vessel drives off the carbon dioxide before the meal enters the kiln, so the kiln itself can be shorter and its output far greater for its size. It is the standard arrangement in any modern works.

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