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Stabilized thermally beneficiated low rank coal and method of manufacture

United States Patent

6,090,171
July 18, 2000
View the Complete Patent at the US Patent & Trademark Office
A process for reducing the spontaneous combustion tendencies of thermally beneficiated low rank coals employing heat, air or an oxygen containing gas followed by an optional moisture addition. Specific reaction conditions are supplied along with knowledge of equipment types that may be employed on a commercial scale to complete the process.
Viall; Arthur J. (Colstrip, MT), Richards; Jeff M. (Colstrip, MT)
Western Syncoal Company (Billings, MT)
09/ 235,002
January 21, 1999
The Government of the United States of America has certain rights in this invention pursuant to Contract No. DE-FCC22-90PC89664 awarded by the U.S. Department of Energy.