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The alite phase, tricalcium silicate, forms chiefly in the

  • A.burning zone at the hot end of the kiln
  • B.preheater tower before the kiln proper
  • C.clinker cooler after the kiln discharge
  • D.raw mill during the grinding operation

Answer: A

It requires both the high temperature and the liquid phase found only there, which is why the burning zone governs the quality of the clinker. Everything before it prepares the charge and everything after it preserves what has been made.

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