CATIONIC POLYMER SELECTIVE DEPRESSANTS AND USE THEREOF IN MINERAL ORE PURIFICATION METHODS
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United States of America Patent
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Jul 18, 2019
app pub date -
Aug 30, 2017
filing date -
Aug 30, 2017
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Abstract
The present embodiments generally relate to a technology for improving Cu/Mo grade by the addition of cationic polymers as selective depressants for acid insoluble matters, e.g., silicates and/or clays, in the flotation circuit. Various types of cationic polymers are demonstrated to be effective depressants including polyamine, polyDADMAC, and cationic polyacrylamide. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more cationic polymer depressants.
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