Method of treating zinc-containing substance and apparatus...

Details Method of treating zinc-containing substance and apparatus... Method of treating zinc-containing substance and apparatus...

C - Chemistry, Metallurgy

22

B

C22B 19/14 (2006.01) C22B 7/02 (2006.01) C22B 19/30 (2006.01) F27B 1/10 (2006.01)

Patent

CA 2186826

Method and apparatus for collecting valuable products, particularly zinc, from a zinc-containing substance such as electric furnace dust. A shaft type smelting reduction furnace has a packed bed of a carbonaceous solid reducing agent and has upper and lower tuyeres, and a zinc-containing substance is injected through tuyeres to reduce and vaporize zinc, which is directly contacted by a liquid coolant thereby forming a slurry, and the zinc product is collected from the slurry.

Méthode et appareil pour récupérer des produits de valeur, notamment le zinc, à partir de substances renfermant du zinc, comme la poussière des fours électriques. Un four à cuve de fusion comporte un lit formé d'un agent réducteur solide carbonacé, avec des tuyères supérieures et inférieures; une substance renfermant du zinc est injectée à travers les tuyères pour réduire et vaporiser le zinc, qui est directement mis en contact avec un réfrigérant liquide; il se forme une suspension épaisse, et le zinc est récupéré à partir de celle-ci.

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