Separation of precious metals by an ion exchange process

Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium

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75718, 75720, 423 22, 423 24, 423139, C22B 324

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active

052561879

ABSTRACT:
The present invention relates to the extraction and separation of low concentrations of precious group metals from acid chloride solutions, which are obtained by leaching catalytic converters, by utilizing a 8-hydroxyquinoline containing resin and a thiourea stripping process. The said process eliminates the phase separation problems and reagent losses which are normally associated with prior art methods. In addition to being used as a catalytic converter recycler, the present invention can be also employed by waste water treatment plants.

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Pouskouleli, "Recovery and Separation of Platinum and Palladium by coextraction and Differential Stripping", pp. 174-188. Separation Processes in Hydrometallurgy Jul. 1987.

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