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US 9,702,021 B2Granted
Method for platinum recovery from materials containing rhenium and platinum metals
AssigneeTechemet, LP
InventorsLouis A. Britton, Georges Z. Markarian
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Abstract
Hydrometallurgical methods are described for the isolation and recovery of platinum from rhenium-containing materials, and more particularly, from superalloys containing rhenium, platinum, and other metals. In addition, apparatuses capable of carrying out the hydrometallurgical methods and the product streams generated from the methods and apparatuses are described.
Claims25
A method of separating platinum and rhenium comprising the steps of:
- digesting an alloy comprising platinum and rhenium thereby obtaining solids comprising platinum and liquids comprising rhenium, wherein the alloy is not contacted with a composition comprising more than 250 ppm halides;
- and
- a step of separating the solids comprising platinum from the liquids comprising rhenium following the step of digesting.
A system that separates platinum and rhenium comprising:
- an alloy comprising platinum and rhenium undergoing digestion in a composition comprising not more than 250 ppm halides.
Dependencies are inferred from the claim text.