Method of extracting caking coals

Details Method of extracting caking coals Method of extracting caking coals

C - Chemistry, Metallurgy

10

G

196/5.9

C10G 1/04 (2006.01) B01D 11/02 (2006.01) C10G 1/00 (2006.01)

Patent

CA 1201081

ABSTRACT OF THE INVENTION "METHOD FOR EXTRACTING CAKING COALS" Caking coals can be solvent extracted in high yields without agglomeration by a first stage extraction of 380°C to 420°C and at a pressure above the critical pressure of the solvent, followed by a second stage at a temperature above the critical temperature of the solvent in the range 440°C to 490°C. Conveniently, the extraction is done by a cocurrent flow, using a hydrogen donor solvent.

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