Apparatus for treating zinc concentrates

Details Apparatus for treating zinc concentrates Apparatus for treating zinc concentrates

1992-02-03

1993-03-09

Rosenberg, Peter D.

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

Slag refining means

75640, 75655, 75656, 75696, F27B 316

Patent

active

051924870

ABSTRACT:
A method and apparatus for treating zinc concentrates in order to recover zinc. The method includes an oxidizing and smelting stage (10) and, subsequent to the smelting stage, a fuming stage (20) in which the zinc-oxide-containing slag formed in the smelting stage is so reduced as to remove the metallic zinc with the exhaust gases (28). Part of the reduced slag is discharged during the fuming stage, another part (32) is recirculated to the smelting stage. In accordance with a preferable method, the slag is reduced in two successive fuming stages (20, 40). In an apparatus according to the invention, the slag circulation between the fuming and smelting stages is facilitated by overflows arranged in the partition walls (19) between the various stages.

REFERENCES:
patent: 4484730 (1984-11-01), Dimitrov
patent: 4741770 (1988-05-01), Andrews

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