Process for purifying aqueous solutions, of metal ions...

Details Process for purifying aqueous solutions, of metal ions... Process for purifying aqueous solutions, of metal ions...

C - Chemistry, Metallurgy

02

F

362/54, 204/89

C02F 1/00 (2006.01) C01G 9/00 (2006.01) C01G 9/06 (2006.01) C02F 1/46 (2006.01) C22B 3/46 (2006.01)

Patent

CA 1048176

ABSTRACT A process for purifying aqueous solutions, of metal ions precipitating as arsemides, antimonides, tellurides, selenides, and tin and mercury alloys, wherein arsenic, antimony, tellurium, selenium, tin mercury and/or compounds of the same are added to the aqueous solution as auxiliary agents, whereafter the impurities are cemented under reducing conditions by means of the auxiliary agent, and the cementation is catalyzed by means of the formed cementate by contacting the aqueous solution with the cementate, the quantity of which is substantially greater than that primarily cemented from the aqueous solution.

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