Precious metal recovery using thiocyanate lixiviant
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United States of America Patent
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Jul 14, 2009
Grant Date -
Mar 20, 2008
app pub date -
Oct 5, 2007
filing date -
Apr 4, 2003
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Abstract
For removal of precious metal from thiocyanate leach solution, precious metal is transferred from precious metal-thiocyanate complex to precious metal-cyanide complex. Preparation of thiocyanate leach solution includes dissolving cyanide in an aqueous liquid and converting the cyanide to dissolved thiocyanate.
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