Process for refining molten copper matte with an enriched oxygen

Details Process for refining molten copper matte with an enriched oxygen Process for refining molten copper matte with an enriched oxygen

1975-06-27

1976-11-09

Satterfield, Walter R.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 72, C22B 1500

Patent

active

039908909

ABSTRACT:
A process for refining molten copper matte in a refractory-lined converter having at least one double tuyere located beneath the surface of the molten bath by injecting an oxidizing gas into the matte through the tuyere at a pressure in the range of 6 to 20 bars while also injecting therethrough a cooling agent peripherally of the oxidizing gas. During a first phase of the refining, the oxygen content of the oxidizing gas is varied as necessary up to pure oxygen to maintain the temperature of the matte in the range of 1280.degree. C to 1420.degree. C and still promote sufficient stirring of the molten bath by the injected oxidizing gas. Thereafter, the matte is blown with an oxidizing gas highly enriched with oxygen for a second phase of the refining while still maintaining the temperature in the aforementioned range by adjusting the oxygen content of the oxidizing gas.

REFERENCES:
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patent: 3432289 (1969-03-01), Spitz et al.
patent: 3604698 (1969-10-01), Themelis
patent: 3608880 (1971-09-01), Gombert et al.
patent: 3632335 (1972-01-01), Worner
patent: 3706549 (1972-12-01), Knuppel et al.
patent: 3781002 (1973-12-01), Courard
patent: 3817744 (1974-06-01), Leroy et al.

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