Lead smelting method
AssigneeLectromelt Corporation
InventorJohn A. Persson
Life of this patent
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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.
Claims6
A method of smelting lead comprising the steps of containing a quantity of lead in solid form an electric arc furnace, disposing a layer of granular carbonaceous material over said lead, disposing at least two electrodes in engagement with said carbonaceous material and in spaced apart relation, passing an electric current through said carbonaceous material and between said electrodes for generating resistance heating in carbonaceous material, transferring heat from said carbonaceous material to said lead, and continuing the energization of said electrodes until said lead material is fused.
Dependencies are inferred from the claim text.