Recovery of pure platinum and palladium

Details Recovery of pure platinum and palladium Recovery of pure platinum and palladium

1990-06-12

1991-09-03

Andrews, Melvyn J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Platinum group metal

75722, C22B 326

Patent

active

050452908

ABSTRACT:
A process for recovery of platinum and palladium from an impure substantially gold-free precious and base metal-bearing acidic chloride or mixed chloride/sulphate solution comprises the steps of: contacting the acidic solution having a pH less than about 1.5 with an organic solution comprising an 8-hydroxy quinoline solvent extraction reagent, a phase modifier and an aromatic diluent to extract simultaneously platinum and palladium into the organic solution; scrubbing the loaded organic solution to remove co-extracted impurities and acid; stripping the loaded organic with a buffer solution operating in the pH range 2-5 at 20.degree.-50.degree. C. to selectively recover the platinum; stripping the platinum-free loaded organic with 3-8 M hydrochloric acid to recover the palladium; and regenerating the organic solution by washing with water.

REFERENCES:
patent: 4654145 (1987-03-01), Demopoulos et al.
patent: 4942023 (1990-07-01), De Schepper et al.

Affiliated with

Also associated with

Rating

Recovery of pure platinum and palladium does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recovery of pure platinum and palladium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of pure platinum and palladium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1007723