Process for treating precious metal ores

Details Process for treating precious metal ores Process for treating precious metal ores

C - Chemistry, Metallurgy

22

B

C22B 1/06 (2006.01) C22B 1/00 (2006.01) C22B 1/02 (2006.01) C22B 11/00 (2006.01)

Patent

CA 2395988

This invention provides a method to control the off gas emission of sulfur dioxide from a mineral ore roaster by grinding a sulfur-containing mineral ore, adding sodium sesquicarbonate to the mineral ore, and roasting the ore and sodium sesquicarbonate at an elevated temperature.

Cette invention a trait à un procédé permettant d'agir sur l'émission résiduelle de dioxyde de carbone émanant d'un four de grillage de minerai par broyage du minerai contenant du soufre, par addition de sesquicarbonate de sodium à ce minerai et par grillage du minerai ainsi que du sesquicarbonate de sodium à température élevée.

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