SYSTEMS AND METHODS FOR METAL RECOVERY
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United States of America Patent
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Jun 13, 2019
app pub date -
Feb 12, 2019
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Dec 20, 2011
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Various embodiments provide a process roasting a metal bearing material under oxidizing conditions to produce an oxidized metal bearing material, roasting the oxidized metal bearing material under reducing conditions to produce a roasted metal bearing material, and leaching the roasted metal bearing material in a basic medium to yield a pregnant leach solution.
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