Process for recovering platinum group metals from ores and...

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal

Reexamination Certificate

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C075S631000

Reexamination Certificate

active

07972412

ABSTRACT:
A method for recovering at least one platinum group metal (PGM) species from a feed product selected from the group consisting of chromite ore, chromite ore concentrate and PGM concentrate comprising the steps of: mixing the feed with at least one salt so as to produce a mixture, whereby the concentration of salt in the mixture is sufficient to convert at least one PGM species into a corresponding PGM chloride salt; and contacting the mixture with gaseous chlorine and CO at a temperature between about 240° C. and 800° C. to induce the conversion of at least one species of PGM into a solid material containing a corresponding PGM chloride salt, whereby said chloride salt of at least one PGM species can be recovered.

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