Method for producing metallic lead by direct lead-smelting

Details Method for producing metallic lead by direct lead-smelting Method for producing metallic lead by direct lead-smelting

1985-01-29

1986-04-22

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C22B 1300

Patent

active

045840172

ABSTRACT:
The invention relates to a method for producing metallic lead from lead-containing starting materials by an oxidizing smelting process and subsequent reduction of the resultant oxidic molten bath. The reduction is effected with solid carbonaceous reduction agent present in the melt, and it is ensured that solid carbonate-containing material, preferably limestone, dolomite or soda ash, is also present in the melt, together with the reduction agent.
The method can be applied for working-up lead-starting materials of sulphidic, oxidic or sulphatic kind. In addition, the method can be applied to advantage for working-up lead-carbonate containing starting materials, where at least a part of the carbonate-containing material may comprise lead-starting material.

REFERENCES:
patent: 1804054 (1931-05-01), Hayward
patent: 2926081 (1960-02-01), Schwartz
patent: 3689253 (1972-09-01), Dorenfeld et al.
patent: 4008075 (1977-02-01), Petersson
patent: 4017308 (1977-04-01), Peterson
patent: 4080197 (1978-03-01), Meissner et al.
patent: 4135912 (1979-01-01), Matthew et al.

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