Process for treating sulfidic complex and mixed ores,...

Details Process for treating sulfidic complex and mixed ores,... Process for treating sulfidic complex and mixed ores,...

C - Chemistry, Metallurgy

22

B

53/368

C22B 1/02 (2006.01) C22B 7/00 (2006.01) C22B 9/14 (2006.01) C22B 30/00 (2006.01)

Patent

CA 1057510

ABSTRACT OF THE DISCLOSURE A process for converting, into an easily removable form, the impurities, such as arsenic, antimony and bismuth, present in substantially sulfidic complex and/or mixed ores and con- centrates or technical precipitates containing similar minerals, wherein the minerals present in the raw material are decomposed and rearranged at a temperature of approx. 500-900°C, prefer- ably 600-800°C, and under a high partial pressure of elemental sulfur, whereby the new compounds produced by the rearrangement of the impurities are optionally evaporated at least partially, at the same stage.

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