Recovery of noble metals

Details Recovery of noble metals Recovery of noble metals

1988-10-20

1991-04-09

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

B01J 8011, C01G 5500

Patent

active

050061666

ABSTRACT:
A process for recovering Group VIII noble metals from tar is provided. The process involves heating a mixture of the Group VIII noble metal, tar and methyl iodide in a closed system at a temperature in excess of 50.degree. C. During the process the Group VIII noble metal is precipitated in an insoluble form which can be separated by e.g. filtration. Precipitation preferably takes place at a temperature in the range 120.degree. to 180.degree. C. The process is particularly suitable for the recovery of either rhodium or iridium.

REFERENCES:
patent: 3887489 (1975-06-01), Fannin

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