Activated carbon for recovery of gold

Details Activated carbon for recovery of gold Activated carbon for recovery of gold

1990-03-14

1991-05-28

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

423 29, C01G 700

Patent

active

050191624

ABSTRACT:
There is disclosed an activated carbon for use in the process of recovery of gold which comprises adsorbing aurocyanide complexes thereon, desorbing the complexews therefrom and separating the activated carbon with a screen, the activated carbon being spherical and having a diameter of more than the opening of the screen but of not more than 2 mm; an iodine number of not less than 950 mg/g as determined by JIS K 1474-1975; and a hardness of not less than 99% as determined by JIS K 1474-1975.
Also disclosed is an improved, high efficient process of the recovery of gold which uses such a spherical activated carbon.

REFERENCES:
patent: 4289532 (1981-09-01), Matson
patent: 4606766 (1986-08-01), Genik-Sas-Berezowsky
patent: 4734270 (1988-03-01), Touro

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