Metal refining process

Details Metal refining process Metal refining process

1984-05-22

1985-12-10

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

266208, C21C 534, C21C 710

Patent

active

045577579

ABSTRACT:
The present invention provides a process for the refining of metal by the removal of unwanted constituents 11 therefrom. The process comprises melting down the metal 8 under an atmosphere in which the ratio of the partial pressure of non-deleterious gas 6 to the partial pressure of deleterious gas 10 is at least 10:1. The invention also provides an apparatus comprising a vacuum induction melting furnace 3, a vessel 2 for holding metal 8 and gas exhaustion means 4 for extraction of gas from the furnace 3. A gas supply means 6 is formed and arranged 5 for directing a flow of gas substantially directly at the mouth of said vessel 2.

REFERENCES:
patent: 3240588 (1966-03-01), Finkl
patent: 4154603 (1979-05-01), Oguchi
patent: 4174212 (1979-11-01), Bauer

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