Continuous direct process of lead smelting

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

C - Chemistry, Metallurgy

22

B

53/331

C22B 13/00 (2006.01) C22B 7/04 (2006.01) C22B 13/02 (2006.01)

Patent

CA 1219133

Abstract of the Disclosure There is disclosed a continuous direct process of lead smelting comprising a step of blowing a compound- ed 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.

451980

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