Lead smelting method

Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes

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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

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