Dump leaching of copper

Details Dump leaching of copper Dump leaching of copper

1977-11-11

1978-10-17

Hearn, Brian

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

75101R, 75117, C22B 1508

Patent

active

041209354

ABSTRACT:
The improvement in the method of recovering copper from low grade ore containing oxidized copper ore which comprises establishing a dump of such ore in fragmented form, substantially completely wetting the ore in the dump with strong aqueous sulfuric acid containing at least about 100 g/l H.sub.2 SO.sub.4, allowing the acid wetted ore to age for a period of at least about three days, thereafter washing the aged ore with dilute aqueous sulfuric acid containing about 5 to 40 g/l H.sub.2 SO.sub.4, collecting such washings, and recovering copper therefrom.

REFERENCES:
patent: 2563623 (1951-08-01), Scott
patent: 3777004 (1973-12-01), Lankenau
patent: 3808306 (1974-04-01), Smith et al.
patent: 3868439 (1975-02-01), Wadsworth
patent: 4017309 (1977-04-01), Johnson

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