Method of liberating nickel- and cobalt-enriched fines from late

Details Method of liberating nickel- and cobalt-enriched fines from late Method of liberating nickel- and cobalt-enriched fines from late

1983-07-22

1985-09-17

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423123, 423128, 423131, 423141, 423146, 423159, 423161, 423166, 75101R, 75108, 75115, 75119, 75121, C01G 5300, C01G 5500, C22B 300

Patent

active

045419949

ABSTRACT:
According to the present invention, Ni- and Co-rich, low Mg fines may be advantageously separated from the coarse fractions of lateritic ores by atmospheric or low pressure leaching. In particular, the process of the present invention comprises contacting a lateritic ore or ore fraction at temperatures from about 20.degree. C. to about 200.degree. C. and pressures from about atmospheric to about 200 psig with an aqueous acid solution to form a leach liquor, a leach residue and a fines fraction. The fines fraction which can be separated from the residue with the leach liquor by conventional means such as cycloning is found to be richer in Ni and Co and lower than the remainder of the residue.

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