Method for the pyrometallurgical treatment of fine grained solid

Details Method for the pyrometallurgical treatment of fine grained solid Method for the pyrometallurgical treatment of fine grained solid

1984-10-03

1986-01-28

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 73, C22B 1500

Patent

active

045669031

ABSTRACT:
A method and apparatus for the pyrometallurgical treatment of fine grained solids such as non-ferrous metal ore concentrates with an oxygen-containing gas wherein the solids are mixed with the gas to form a suspension which is blown through a nozzle into a reaction chamber such as a vertical melting cyclone. In the reaction chamber, the solids are brought to reaction and melted. The invention is concerned with injecting a particle stream through the reaction zone as a focused open jet having mass flow velocity of greater than 50 kg/m.sup.2.sec and having a linear speed of more than 35 m/sec. The particle stream is ignited by the hot combustion gases thereof or by a pilot flame. In a preferred embodiment of the invention, the particle stream is directed along a horizontal secant of the chamber to the opposite wall.

REFERENCES:
patent: 3607224 (1971-09-01), Blaskowski
patent: 4334919 (1982-06-01), Quereau et al.
patent: 4493732 (1985-01-01), Melcher

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