Coal ash produces alumina, cement burning novel process

Coal ash produces alumina, cement burning novel process

  • CN 1,016,157 B
  • Filed: 07/18/1986
  • Issued: 04/08/1992
  • Est. Priority Date: N/A
  • Status: Active Grant
First Claim
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1. , a kind ofly extracts from aluminous fly-ash or coal gangue with the limestone sintering method with preheating, using predecomposition technology;

  • Be processed as the calcining process of fine aluminum oxygen product, it is characterized in that adopting grate cooler in the outer preheating of described kiln, the using predecomposition technology, realize that the portion of hot air repeats once to pass through hot grog layer, and take out hot blast from the 2nd grade of preheater outlet and send the fluidizing furnace generating.

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