Improved methods for leaching of ores

Details Improved methods for leaching of ores Improved methods for leaching of ores

C - Chemistry, Metallurgy

01

G

C01G 23/053 (2006.01) C22B 3/00 (2006.01) C22B 3/08 (2006.01) C22B 23/00 (2006.01) C22B 34/12 (2006.01)

Patent

CA 2363031

Disclosed and claimed are efficient methods for leaching minerals from ores using an acidic solution such as sulfuric acid. Additional factors which can improve mineral recovery include the use of an alkali metal halide, grinding the ore, addition of a carbon source, and/or adjustment of the temperature at which the process is carried out. Minerals such as titanium, iron, nickel, cobalt, silver and gold may be recovered by the methods of the present invention.

L'invention concerne des procédés efficaces de lixiviation de minéraux à partir de minerais au moyen d'une solution acide, telle que l'acide sulfurique. Parmi les facteurs additionnels pouvant améliorer la récupération de minéraux, on trouve l'utilisation d'un halogénure de métal alcalin, le broyage des minérais, l'addition d'une source de carbone et/ou le réglage de la température à laquelle le procédé est mis en oeuvre. Des minéraux, tels que le titane, le fer, le nickel, le cobalt, l'argent et l'or peuvent être récupérés selon les procédés de cette invention.

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