C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/369
C22B 3/00 (2006.01) B01D 11/02 (2006.01) B03D 3/06 (2006.01) C22B 11/08 (2006.01) B01D 11/00 (2006.01)
Patent
CA 1232142
17 LEACHING AND WASHING A FLOCCULATED SLURRY HAVING A FIBER CONTENT ABSTRACT Particlized mineral material, such as gold ore, silver ore, or coal, is subjected to a leaching process in a manner to maximize treatment effective- ness even when the particlized mineral material contains small fines. The material is slurried with a flocculating material and fibers, such as cellulosic fibers, fiberglass fibers, or ceramic fibers, and a liquid, and then is passed to the top of a leaching reactor. The slurry is continuously passed downwardly in the reactor while the leaching liquid, such as a cyanide solution, is passed counter-current to the slurry. Leaching liquid is removed from the top of the leaching reactor by a stilling well, and then passed through a carbon adsorber and reintroduced into the reactor. Leached slurry is passed to a continuous washing station, with spent wash liquid from the top of the washing station being utilized as a slurrying liquid for the particlized mineral material.
446763
Brison Robert J.
Elmore Carl L.
Sherman Michael I.
Goudreau Gage Dubuc
Kamyr Inc.
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