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Carbon monoxide in the kiln exhaust indicates

  • A.incomplete combustion, usually from insufficient air
  • B.that the clinker in the kiln has been considerably overburnt
  • C.that the raw meal has been ground far too finely
  • D.that the cooler is recovering rather too much heat

Answer: A

It represents both wasted fuel and a hazard, particularly where an electrostatic precipitator is fitted. A rising reading normally prompts an immediate increase in the draught or reduction in fuel. Carbon monoxide near a precipitator is an explosion risk as well as a loss.

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