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State whether the following is true or false.
Waste heat from a cement kiln can be used to generate electricity.

  • A.True only at large scales
  • B.False only at small scales
  • C.True
  • D.False

Answer: C

Gas leaving the preheater and cooler still carries useful heat, and waste heat recovery boilers driving steam turbines are now common. The economics depend on the local price of electricity and on how much heat the raw mill already takes.

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