Hydrometallurgical leaching process and apparatus

Details Hydrometallurgical leaching process and apparatus Hydrometallurgical leaching process and apparatus

1992-08-27

1993-10-05

Brunsman, David

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 20, 423 27, 423 28, 423109, 4231501, C01G 100, C01G 5300, C01G 4300, C01G 700

Patent

active

052502732

ABSTRACT:
A process and apparatus for leaching metal values from a particulate mineral ore containing metal values employs a fluidized bed of the particles; a leaching agent solution containing dissolved oxygen flows upwardly of the bed in a lower leaching zone, to an upper clarification zone; a velocity profile is maintained to promote settling of particles so that the particulate solids remain in the leaching zone and a clarified leachant-containing liquid low in suspended solids rises and collects in the clarification zone; the process is carried out with a minimum of undissolved gas and avoids the need for mechanical agitation, but the kinetics of the chemical leaching reaction is improved and heat loss via escaping gases is avoided.

REFERENCES:
patent: 4035292 (1977-07-01), Himsley
patent: 4192740 (1980-03-01), Savard et al.
patent: 4246111 (1981-01-01), Savard et al.
patent: 4284510 (1981-08-01), Savard et al.
patent: 4301007 (1981-11-01), Savard et al.

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