Leaching and washing a flocculated slurry having a fiber content

Details Leaching and washing a flocculated slurry having a fiber content Leaching and washing a flocculated slurry having a fiber content

1984-09-13

1985-12-10

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 29, 423109, 423150, 423578A, 75 2, 75 3, 75101R, 75105, 75117, 75119, 75118R, 75120, 75121, C01G 700

Patent

active

045579059

ABSTRACT:
Particlized mineral material, such as gold ore, silver ore, or coal, is subjected to a leaching process in a manner to maximize treatment effectiveness 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.

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