Method of extraction of metals from low grade ores

Details Method of extraction of metals from low grade ores Method of extraction of metals from low grade ores

1979-11-08

1981-05-19

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75105, 75106, 75107, 75118R, 423 29, 423 31, C22B 1108

Patent

active

042683076

ABSTRACT:
A continuous process for recovery of metals, especially precious metals, from various ores, involves pulverizing the ore to a particle size less than five microns, forming a colloidal suspension of the particles in a liquid, extracting metal from the slurry with a solvent, and separating the solvent from the particles centrifugally. Metals are recovered from the liquid solvent, which is recycled. Contacting of the slurry with fresh solvent is preferably effected in a staged counter-current centrifugal extraction unit.

REFERENCES:
patent: 1156382 (1915-10-01), Towne et al.
patent: 2266155 (1941-12-01), Bonesteel
patent: 3443932 (1969-05-01), Melin et al.

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