Submerged injection of gas into liquid-pyrometallurgical bath

Details Submerged injection of gas into liquid-pyrometallurgical bath Submerged injection of gas into liquid-pyrometallurgical bath

1978-05-01

1981-02-17

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 76, 75 85, 266225, C22B 1500, C22B 2500

Patent

active

042512719

ABSTRACT:
A method of injecting gas into a pyrometallurgical bath is disclosed, wherein the gas is injected through a lance having an interior duct for flow of gas therethrough and a discharge end at which the gas is discharged characterized by the steps of presenting the discharge end of the lance to a molten mass of slag and forcing gas through the lance to splash-coat the discharge end of the lance with molten slag and inserting the thus coated discharge end of the lance into the pyrometallurgical bath. Also disclosed is a lance for submerged injection of gas into a liquid pyrometallurgical bath comprising a duct for flow of gas longitudinally through the lance characterized in that the outer wall of the duct is defined by an elongate tube constituting an outer wall of the lance and there is gas flow swirler means within the tube to impart swirl to gas passed through the duct.

REFERENCES:
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patent: 3898078 (1975-08-01), Huber
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patent: 3945820 (1976-03-01), Brotzmann et al.
patent: 4052044 (1977-10-01), Colling et al.

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