PROCESS FOR METAL RECOVERY IN FLOTATION OPERATIONS
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United States of America Patent
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Aug 22, 2019
app pub date -
Feb 21, 2019
filing date -
Feb 21, 2018
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Abstract
The present invention is related to a process for increasing copper or metal recovery in flotation processes, specially of minerals that are dissolved during the grinding stage, by the use of any sulfidizing agent or ionizing sulfide such as, but not limited to, sodium hydrogen sulfide, sodium sulfide, potassium hydrogen sulfide, potassium sulfide, ammonium hydrogen sulfide or ammonium sulfide, hydrogen sulfide (H2S), polysulfides of potassium, calcium, magnesium or ammonium to precipitate during the grinding stage or immediately after the grinding stage, metals that have been dissolved prior or during the milling or grinding stage prior to normal flotation.
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