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Process and means for the heat treatment of powdery or granulate material

  • US 4,911,930 A
  • Filed: 01/17/1989
  • Issued: 03/27/1990
  • Est. Priority Date: 06/21/1985
  • Status: Expired due to Term
First Claim
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1. An effervescent granulate comprising coarse particles of at least one toxicologically acceptable water-soluble acid having bound thereto through a binding layer at least one unreacted alkali metal or alkaline earth metal carbonate or bicarbonate and at least one water soluble toxicologically acceptable fluorine containing compound, wherein said binding layer comprises the reaction product of said toxicologically acceptable water soluble acid and at least one alkali metal or alkaline earth metal carbonate or bicarbonate.

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