Ammoniacal nickel leach of laterites

Details Ammoniacal nickel leach of laterites Ammoniacal nickel leach of laterites

1980-04-14

1982-05-04

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

75119, C01G 5300

Patent

active

043281923

ABSTRACT:
In a hydrometallurgical process for the recovery of metal values from a metal bearing source in which a metal bearing source is treated at a temperature in the range of from about 300.degree. to about 900.degree. C. in a reducing atmosphere in contact with an additive such as a hydrogen halide and sulfur followed by cooling and extracting the source with a basic or acidic solution, the recovery of the desired metal value may be improved by adding the hydrogen halide to the source at a temperature below about 500.degree. C.

REFERENCES:
patent: 3772424 (1973-11-01), Stevens
patent: 3845189 (1974-10-01), Miller
patent: 4069294 (1978-01-01), Stevens
patent: 4187281 (1980-02-01), Stauter

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