Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1981-05-18
1982-10-12
Rosenberg, P. D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 14, 75 77, C22B 400
Patent
active
043537383
ABSTRACT:
A method of smelting lead comprises the steps of containing a quantity of crude lead in an electric arc furnace, disposing a layer of coke or carbon granules over said lead, disposing at least two spaced apart electrodes in contact with said granules, energizing said electrodes for passing an electric current through said granules for heating said lead to at least its fusion temperature, and withdrawing the molten lead from beneath the granules.
REFERENCES:
patent: 815221 (1906-03-01), Ruthenburg
patent: 842273 (1907-01-01), Tone
patent: 1101551 (1914-06-01), Humbert
patent: 2006256 (1935-06-01), Betterton et al.
patent: 2715062 (1955-08-01), Osborn
patent: 2769706 (1956-11-01), Herneryd
patent: 3137569 (1964-06-01), Hammond
patent: 4073640 (1978-02-01), Soykan
patent: 4162915 (1979-07-01), Maes
Lectromelt Corporation
Rosenberg P. D.
Wiviott Fred
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