Method for processing mineral material containing acid-consuming carbonate and precious metal in sulfide minerals
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United States of America Patent
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Jan 17, 2017
Grant Date -
Mar 17, 2016
app pub date -
Apr 23, 2014
filing date -
Apr 30, 2013
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Abstract
Processing of mineral material containing precious metal with one or more sulfide minerals and non-sulfide gangue minerals including acid-consuming carbonate may include preparation of a sulfide concentrate by flotation with the flotation or conditioning prior to flotation using a gas comprising carbon dioxide. Flotation may be at an acidic pH without prior decomposition of the acid-consuming carbonate and may be without addition of acid for pH adjustment.
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