Process for treatment of lateritic ores

Details Process for treatment of lateritic ores Process for treatment of lateritic ores

1974-09-30

1977-09-20

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 3, 75 21, C22B 2300

Patent

active

040494446

ABSTRACT:
Recovery, by thermal upgrading, of nickel values from nickeliferous lateritic ores containing a silicate fraction is improved by forming agglomerates of the ore, a reagent containing at least one member selected from the group consisting of alkali or alkaline earth metal compounds in a small but effective amount to increase nickel recovery from the silicate fraction and a liquid hydrocarbon in an amount between about 1 and 12%, based on the weight of the ore and heating a static, shallow bed of the agglomerates established on a moving bed to partially melt the agglomerates to reduce and coalesce the nickel values into easily recoverable ferronickel concentrate. The grade of the ferronickel concentrate can be increased by incorporating a sulfur-bearing material in the agglomerates.

REFERENCES:
patent: 3365339 (1968-01-01), Beggs et al.
patent: 3388870 (1968-06-01), Thumm et al.
patent: 3443931 (1969-05-01), Beggs et al.
patent: 3503734 (1970-03-01), Bell
patent: 3503735 (1970-03-01), Beggs et al.
patent: 3535105 (1970-10-01), Archibald
patent: 3793005 (1974-02-01), Kelly et al.

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