Recovery of noble metals

Details Recovery of noble metals Recovery of noble metals

C - Chemistry, Metallurgy

22

B

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C22B 11/00 (2006.01) B01D 11/00 (2006.01) B01J 31/40 (2006.01) C01G 55/00 (2006.01) C22B 3/00 (2006.01) C22B 3/40 (2006.01) C22B 7/00 (2006.01) C22B 11/02 (2006.01)

Patent

CA 1298976

Case 6772(2) ABSTRACT OF THE DISCLOSURE 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°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 to 180°C. The process is particularly suitable for the recovery of either rhodium or iridium.

580581

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