Process for recovering silver from sulfate solutions

Details Process for recovering silver from sulfate solutions Process for recovering silver from sulfate solutions

C - Chemistry, Metallurgy

22

B

53/235

C22B 3/44 (2006.01) C01G 5/00 (2006.01)

Patent

CA 1233028

ABSTRACT The invention relates to a process for recovering silver in sulfuric solutions. Its characterizing feature is that the silver solution is contacted with a quantity of zinc sulfide which is at least equal to the stoichiometric quantity and the surface area of which is at least equal to K Ag2/3 x V, K being a constant, Ag being the silver concentration in the solution expressed in kilograms per cubic meter, and V the volume of the solution in cubic meters, the surface area being expressed in square meters and the value of K being greater than or equal to approximately 10. Application to the recovery of silver in zinc plant residues.

469570

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