Time-controlled processes for agglomerating coal

作者: Douglas V. Keller , William M. Burry

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摘要: Methods of recovering agglomerated particles a carbonaceous constituent such as coal from composite that and mineral matter. An additive is incorporated into slurry the to control agglomeration time and/or insure will agglomerate. Appropriate additives are: Naturally occurring hydrocarbonaceous substances road asphalts, Gilsonite, pentane extracts coals, tar sands oils, tars, alcohols having six or more carbon atoms Castor oil Isopropyl ether Hydrolized linseed 2-Ethylhexyl acetate Ionic dispersants ammonium salts lignosulfonates Nonionic dextrins A compound formula R--O--R, R2 --CO, R--COOH, R--COOR where R an aliphatic moiety at least atoms.

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