Smelting process for recovering metals from fine-grained non-fer

Details Smelting process for recovering metals from fine-grained non-fer Smelting process for recovering metals from fine-grained non-fer

1985-08-02

1988-04-26

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 26, 75 74, 75 80, 75 84, C22B 508

Patent

active

047402407

ABSTRACT:
In the smelting process of recovering metal from non-ferrous metal oxide ores or concentrates and/or from fine-grained non-ferrous metal sulfide ores or concentrates, particularly from non-ferrous heavy metal sulfide ores or concentrates, any sulfide ores are initially oxidized. The ores or concentrates are then supplied to a fluidized bed of coal in a melting gasifier (1). A certain particle size is maintained. Sulfide ores are supplied to a melting burner (2), which directs a flame jet into the fluidized bed of coal (FIG. 1).

REFERENCES:
patent: 2740710 (1956-04-01), Johannsen
patent: 2978315 (1961-04-01), Schenck et al.
patent: 3948639 (1976-04-01), Nermes et al.
patent: 3948645 (1976-04-01), Elvander et al.
patent: 4087274 (1978-05-01), Edenwall et al.
patent: 4224056 (1980-09-01), Tomizawa et al.
patent: 4396421 (1983-08-01), Stift et al.

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