Process for pyrometallurgical processing in a furnace chamber, o

Details Process for pyrometallurgical processing in a furnace chamber, o Process for pyrometallurgical processing in a furnace chamber, o

1999-06-14

2000-12-12

King, Roy V.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75658, 75669, 75691, 75695, C22B 700

Patent

active

061592684

ABSTRACT:
The invention relates to a process for pyrometallurgical processing, in a furnace chamber, of metal-containing waste which may also contain a quantity of organic material. The process involves a reducing gas being blown with high velocity onto the surface of the smelt in which the metal oxides are present in the molten state, the reducing gas being made by incomplete combustion of a fuel and/or the organic material and an oxygen-containing gas. Additionally, steam and/or an oxygen-rich gas such as almost pure oxygen are injected, roughly parallel to the surface of the smelt, into the oven chamber above said surface. The total amount of oxygen used in the furnace chamber is lower than the amount required stoichiometrically for complete combustion of the organic material together with the fuel.

REFERENCES:
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patent: 4362561 (1982-12-01), Weigel et al.
patent: 5765489 (1998-06-01), Hugentobler et al.
Ameis et al, "Process and Equipment for the Smelting of Fusible Materials Such as Ore Concentrate, Utilising Unspent Reducing Gas from the Top-Blowing Process in the Melting Cyclone", DE 3,638,204 Abstract May 11, 1988.
Derwent Acc-No. 1988-071673, Bock et al, DE-3629661 A1, Aug. 30, 1986.
Derwent Acc-No. 1993-206341, Lissack et al, DE-4142401 A1, Jan. 24, 1993.

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