Process for the treatment of platinum group metals and gold
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United States of America Patent
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-
Feb 12, 1980
Issued Date -
N/A
app pub date -
Jun 28, 1978
filing date -
Jan 29, 1975
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for the dissolution of precious metal values in a concentrate thereof wherein the concentrate is caused to alloy with aluminum and the alloy is then leached in at least two steps, the first of which is to remove base metals and in the second of which the precious metals are dissolved using hydrochloric acid and chlorine gas or nitric acid as an oxidant.
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