Reduction of lime consumption when treating refractory gold ores or concentrates
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United States of America Patent
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Oct 4, 2011
Grant Date -
Feb 4, 2010
app pub date -
Oct 13, 2009
filing date -
Dec 22, 2004
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Abstract
The present invention is directed to a precious metal recovery process in which basic ferric sulphates and/or jarosites are controlled by a number of mechanisms, including control of the oxidation reaction conditions in the first autoclave compartment, hot curing of the autoclave discharge slurry, and/or contacting of the autoclave feed slurry with the hot cured discharge liquid.
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