Apparatus for suspension smelting

Details Apparatus for suspension smelting Apparatus for suspension smelting

1996-06-28

1998-06-30

Andrews, Melvyn

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

222592, 266193, C22B 512

Patent

active

057729557

ABSTRACT:
The invention relates to an apparatus for the suspension smelting of sulfidic, finely divided raw materials containing metals, such as copper, nickel and lead, by using oxygen enrichment. In this method into the suspension smelting furnace (1) there is fed the raw material (4,5) to be smelted together with flux (6) and oxidizing gas (7) and the walls (18) of the reaction space of the suspension smelting furnace are cooled and at least two molten phases created (16,17). According to the invention the degree of oxygen enrichment of the oxidizing gas is at least 40% in order to raise the temperature of the particles in suspension to at least 200.degree. C. higher than the temperature of the gas phase of the suspension, in order to improve the reaction kinetics of the reactions taking place in the reaction space, and that the thickness of the reaction space wall lining is adjusted, according to the production quantity of the suspension smelting furnace, by means of cooling elements (20) manufactured by draw casting and installed in the wall of the reaction space.

REFERENCES:
patent: 4498610 (1985-02-01), Wooding
patent: 5040773 (1991-08-01), Hackman

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