Separation of copper minerals from pyrite using air-metabisulfite treatment
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United States of America Patent
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May 24, 2016
Grant Date -
Jun 30, 2011
app pub date -
Dec 3, 2010
filing date -
Dec 4, 2009
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Abstract
The present invention relates to flotation of sulfidic copper- molybdenum- and gold-containing minerals. More specifically, the invention relates to sulfoxy reagent-assisted flotation for separating of sulfides of copper, molybdenum and gold from pyrite, marcasite, pyrrhotite, arsenopyrite, and other gangue minerals following aerating by an oxidizing gas and contacting by a sulfoxy reagent. To promote collection and flotation the feed mineral materials are preferably not contacted with an externally generated non-oxidizing gas to lower the dissolved molecular oxygen content prior to flotation.
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