Gold selective ion exchange resins

Details Gold selective ion exchange resins Gold selective ion exchange resins

1989-12-13

1992-07-28

Page, Thurman K.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

521 32, 521 38, 210684, 210688, C08J 520, C02F 142

Patent

active

051341697

ABSTRACT:
A gold selective ion exchange resin and process for the recovery of gold from solutions thereof is described. The resin has a macroporous structure and functional groups selected from alkylamine groups wherein the alkyl chain has between 3 and 6 carbon atoms, preferably tributylamine groups. The functional group content of the resin is from 0,4 mmol/g to 1,8 mmol/g and the water retention capacity is at least 30%. The process for recovering gold involves adsorption thereof onto such resin, optionally directly from a slurry, and elution preferably using a thiourea solution.

REFERENCES:
patent: 4093567 (1978-06-01), Huawetz et al.
patent: 4321331 (1982-03-01), Widiger, Jr. et al.
patent: 4785020 (1988-11-01), Boom

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