Continuous direct process of lead smelting

Details Continuous direct process of lead smelting Continuous direct process of lead smelting

1984-04-25

1985-04-30

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C22B 1300

Patent

active

045142238

ABSTRACT:
There is disclosed a continuous direct process of lead smelting comprising a step of blowing a compounded feedstock by means of an oxygen-enriched air or oxygen into a smelting zone containing a molten lead bath with a blast pressure by which the compounded feedstock can penetrate into the molten lead bath, at a temperature at which the oxidation reaction of the lead sulfide concentrate can be sustained, said feedstock containing particulate or powdered lead sulfide concentrate and a flux and further containing a fuel when oxygen-enriched air is used, whereby the lead sulfide is oxidized to form crude lead and slag; and a step of transferring the molten crude lead and the slag formed in said first step to a reduction zone, where the slag is contacted with a reducing agent so as to reduce the lead substances in the slag and return the reduced lead to the crude lead.

REFERENCES:
patent: 1888164 (1932-11-01), Freeman
patent: 3847595 (1974-11-01), Liang et al.
patent: 4214897 (1980-07-01), Verhulst et al.

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