Recovery of metals from jarosite-containing materials

Details Recovery of metals from jarosite-containing materials Recovery of metals from jarosite-containing materials

C - Chemistry, Metallurgy

22

B

C22B 3/12 (2006.01) C22B 3/00 (2006.01) C22B 3/04 (2006.01) C22B 7/00 (2006.01)

Patent

CA 2439970

A method to dissolve at least one metal from jarosite or other iron hydroxy sulfate containing-material which includes the steps of subjecting the material to alkaline treatment in a brine solution to facilitate jarosite decomposition, and acidification of the brine slurry to solubilise the liberated metal.

L'invention porte sur un procédé de dissolution d'au moins un métal présent dans de la jarosite, ou d'autres matériaux contenant des sulfates hydroxylés de fer, consistant à soumettre le matériau à un traitement alcalin dans une solution de saumure pour favoriser la décomposition de la jarosite, puis à acidifier le coulis de saumure pour solubiliser le métal libéré.

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