Metal value recovery from metal sulfide containing ores

Details Metal value recovery from metal sulfide containing ores Metal value recovery from metal sulfide containing ores

1986-04-30

1988-04-26

Stoll, Robert L.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 2, 75115, 75118R, 75121, 423 27, 423 41, 423 45, 423 53, 423 87, 423150, 423 98, 423109, 423DIG4, 423DIG17, C22B 1104

Patent

active

047402431

ABSTRACT:
A process for recovering at least one first metal from a metal sulfide-containing ore comprising contacting the ore with an aqueous, acidic composition and at least one reducible manganese-containing material at conditions effective (1) to chemically reduce the manganese, (2) solubilize at least a portion of the metal from the sulfide, and (3) at least partially liberate the first metal from the ore; and recovering the first metal from the ore. The use of added ferric ion and/or Thiobacillus ferrooxidans bacteria in the above-noted contacting is also disclosed.

REFERENCES:
patent: 2829964 (1958-04-01), Zimmerley et al.
patent: 3169856 (1965-02-01), Mero
patent: 3330650 (1967-07-01), Zimmerley et al.
patent: 3433629 (1969-03-01), Imai et al.
patent: 4002717 (1977-01-01), Sandberg et al.
patent: 4497778 (1985-02-01), Pooley
Tuovinen, O. H. and Kelly, D. P., "Use of Micro-Organisms for the Recovery of Metals", International Metallurgical Reviews, vol. 19, 1974, pp. 21-31.

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