Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1977-07-22
1978-07-04
Hearn, Brian
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
423142, 423150, C01G 5310
Patent
active
040988708
ABSTRACT:
Nickel values contained in oxidic ores are recovered by leaching with sulfuric acid. The ore is slurried with water, preheated to a leaching temperature between about 230.degree. C and about 300.degree. C and the preheated slurry is fed to one or more vigorously agitated autoclaves, operating continuously in series. Sulfuric acid is added incrementally to the preheated slurry to minimize the amount of iron and aluminum in solution until between about 0.15 part and about 0.8 part of acid per part of dry ore is added to the slurry, thereby minimizing the deposition of scale in the autoclaves.
REFERENCES:
patent: 3773891 (1973-11-01), O'Neill
patent: 3809549 (1974-05-01), Opratko
patent: 3991159 (1976-11-01), Queneau et al.
patent: 4044096 (1977-08-01), Queneau et al.
Boldt et al., The Winning of Nickel, Longmans Canada Ltd., Toronto, (1967), pp. 437-446.
Duyvesteyn Willem P. C.
Fekete Simon O.
Shieh Dien F.
Wicker Gordon R.
Amax Inc.
Ciomek Michael A.
Hearn Brian
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