Process for recovering value metal species from...

Details Process for recovering value metal species from... Process for recovering value metal species from...

C - Chemistry, Metallurgy

22

B

C22B 23/00 (2006.01) C22B 3/06 (2006.01) C22B 3/42 (2006.01) C22B 3/44 (2006.01)

Patent

CA 2538962

An essentially open-circuit process for recovering value metal species from a laterite-type feedstock, the process comprising the sequential or unsequential steps of separating the laterite-type feedstock into a first and a second fraction; reacting an acid with a chloride salt in a first compartment, thereby generating gaseous HCl; chlorinating the first fraction with the gaseous HCl in a second compartment, thereby producing a chlorinated fraction, wherein excess HCl is recovered and dissolved in water, thereby producing a concentrated HCl solution; combining the chlorinated fraction and the second fraction into a mixture; leaching the mixture with the concentrated HCl solution in a third compartment, thereby producing a reaction mass; submitting the reaction mass to a separation of phases, thereby separating an insoluble residue from a head solution; and selectively recovering value metal species from the head solution.

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