Selective recovery of base metals and precious metals from ores

Details Selective recovery of base metals and precious metals from ores Selective recovery of base metals and precious metals from ores

1982-10-20

1984-04-10

Meros, Edward J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Platinum group metal

423 41, 423 45, 423150, 75 82, 75 83, 75 74, 75 92, 75101R, 75121, 75115, 75118R, C01G 5500, C01G 700, C01G 310, C01G 5310

Patent

active

044420722

ABSTRACT:
Metal values are recovered from ore concentrates by forming a sulfide matte, grindng the matte, leaching with sulfuric acid at elevated temperature to selectively extract nickel and iron, and roasting and leaching the residue with dilute sulfuric acid to selectively extract copper. The residue contains a high concentration of platinum, palladium and gold.

REFERENCES:
patent: 3293027 (1964-07-01), Mackiw et al.
patent: 4108639 (1978-08-01), Lake et al.
patent: 4337226 (1982-06-01), Peasley et al.

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