Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1979-11-28
1982-02-16
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 24, 75 93E, 164473, 266227, 266900, C22B 1514
Patent
active
043157750
ABSTRACT:
Disclosed is an integrated system for continuously melting and refining secondary and blister copper to produce and continuously cast anode grade copper comprising: continuous melting of secondary and blister copper in an optional fuel vertical shaft furnace; continuously or semicontinuously skimming initial slag from the surface of the melted copper in a slag vessel as it drains from the shaft furnace; collecting a reservoir of molten copper in a holding furnace capable of controlling its temperature and subsequent flow; adding fluxes to the molten copper; directing the molten copper into an oxidation vessel where the molten copper and impurities are oxidized; transferring the oxidized and fluxed molten copper to a second slag vessel where slag is skimmed from its surface; flowing the oxygen rich molten copper into a reduction vessel where oxygen content is reduced; collecting a supply of refined molten copper in a final holding vessel; continuously passing the refined molten copper through a filtering ladle containing ceramic foam molten copper filters; and continuously supplying refined and filtered molten copper to a casting ladle which continuously casts the refined and filtered molten copper into anodes of suitable quality for electrorefining or into a cast product not requiring electrorefining.
REFERENCES:
patent: 3490897 (1970-01-01), Dore et al.
patent: 3715203 (1973-02-01), De Bie
patent: 3947363 (1976-03-01), Pryor et al.
patent: 4055415 (1977-10-01), Stefan et al.
Berry Milton E.
Brunson William W.
Burson William R.
Cofer Daniel B.
Odle Robert R.
Andrews M. J.
Hanegan Herbert M.
Peacock Frank A.
Southwire Company
Tate Stanley L.
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