Recovery of lead from flue dusts

Details Recovery of lead from flue dusts Recovery of lead from flue dusts

C - Chemistry, Metallurgy

22

B

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

Patent

CA 2304064

The present invention is concerned with a process for extracting and recovering lead or lead derivatives in high purity from various materials containing lead sulphate, and particularly copper smelter flue dusts. The present process also allows the substantially complete recovery or recycling of precious metals otherwise lost in flue dusts wastes.

La présente invention concerne un procédé pour extraire et récupérer du plomb ou des dérivés du plomb de haute pureté contenus dans divers matériaux renfermant du sulfate de plomb, et notamment des poussières de carneau de fonderie de cuivre. Ce procédé permet également de récupérer ou de recycler pratiquement entièrement les métaux précieux qui seraient par ailleurs perdus dans les rejets de poussières de carneau.

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