Heap leach agglomeration/percolation extraction aids for enhanced gold and silver recovery
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United States of America Patent
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Aug 6, 2002
Issued Date -
N/A
app pub date -
Nov 3, 2000
filing date -
Jun 4, 1998
priority date (Note) -
Expired
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Abstract
Methods and compositions for increasing the recovery of precious metals from ore during heap leaching operations are disclosed. The methods add polypropylene glycol and alkylphenol ethoxylate in a paraffin oil solvent with the cyanide lixivant to the ore heap.
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