Process for the suspension smelting of sulfide concentrates

Details Process for the suspension smelting of sulfide concentrates Process for the suspension smelting of sulfide concentrates

1978-03-21

1979-09-18

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 6, 75 9, C22B 110, C22B 111

Patent

active

041681576

ABSTRACT:
A process for the suspension smelting of sulfide concentrates by causing a suspension flowing downwards in a suspension reaction zone to impinge against the surface of a melt below the suspension reaction zone in order to unload the solid and molten particles of the suspension into the melt and by causing the gases to flow further in the suspension reaction zone countercurrently in relation to the suspension in order to discharge the gases from the upper section of the suspension reaction zone, in which sulfide concentrate and oxygen or oxygen-enriched air are fed into the suspension reaction zone symmetrically and in the form of so dense a suspension spray that the iron oxide of the high-temperature suspension is in a molten state and absorbs the free oxygen present in the suspension before the suspension, at a temperature of at least 1400.degree. C., unloads into the melt, the heat is recovered indirectly in the suspension reaction zone from the gases rising symmetrically and smoothly around the suspension, and the melt is fed from the suspension reaction zone into a separate melt reaction space.

REFERENCES:
patent: 2813015 (1957-11-01), Thornhill
patent: 3796568 (1974-03-01), Szekely
patent: 3957484 (1976-05-01), Fekete

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