Process for extraction of platinum group metals from chromite-bearing ore
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United States of America Patent
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-
Oct 20, 1981
Issued Date -
N/A
app pub date -
Jun 10, 1980
filing date -
Apr 23, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for treating chromite-bearing ores to obtain useful mineral values, especially platinum group metal, therefrom wherein the ore is separated into magnetic and non-magnetic fractions; the non-magnetic fraction, containing a substantial portion of the platinum group metals, is concentrated and smelted to produce a metal layer containing platinum group metals; and the platinum group metals are then substantially disassociated from the metal layer containing them. The magnetic fraction of the ore may itself be further treated to remove any platinum group metals associated therewith.
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