Method for recovering the metal content of complex sulphidic met

Details Method for recovering the metal content of complex sulphidic met Method for recovering the metal content of complex sulphidic met

1981-11-18

1983-06-14

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 7, 75 23, 75 74, C22B 107

Patent

active

043881106

ABSTRACT:
The metal content of complex sulphidic metal raw material is recovered therefrom by means of an autogenous flame-smelting process, preferably carried out in a vortex, with an oxygen-containing gas. The raw materials are smelted in a furnace in the presence of an excess of oxygen and together with an addition of an acid slag former, such as silica, to form a melt which is rich in metal-oxide silicate and poor in sulphur. Any metal phase formed in the furnace is separated from the silicate phase, and non-iron metals present in the silicate phase are recovered therefrom by selective reduction.

REFERENCES:
patent: 3663207 (1972-05-01), Themelis
patent: 3674463 (1972-07-01), Yanopoulos
patent: 3790366 (1974-02-01), Bryk
patent: 3847595 (1974-11-01), Liang
patent: 3892560 (1975-07-01), Nermes
patent: 3941587 (1976-03-01), Queneau
patent: 4032327 (1977-06-01), Donaldson
patent: 4087274 (1978-05-01), Edenwall
patent: 4266971 (1981-05-01), Schwartz

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