it is extremely important when treating high sulfide ores with cyanide to keep a sufficient protective base in the solution. many sulfide minerals also contain things like copper or antimony that can react with the cyanide preventing the cyanide from leaching out the gold and silver.
binq mining > crusher and mill > differences in processing sulfide and oxide gold ores; print. differences in processing sulfide and oxide gold ores. posted at:march 15 2013[ the deep post orebody of high grade gold in sulphide ore
we are trying to process gold from arsenopyrite and chalcopyrite ore. our xrf indicated that there was a high concentration of gold along with a variety of minerals. we have tried various methods of refining without much luck due to all of the other minerals with different melting points. we had a
recovery of gold in sulfide ores has fallen into several categories. first is froth flotation and second is cyanidation of the ores. using cyanide to recover gold from sulfide ores generally results in 30 to 35% recovery and the best i have heard of is around 50% recovery.
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sulphide gold ore treatment by leaching and flotation process. a flowsheet to recovery gold from sulfide ores. the concentrate from either plant could be roasted for the elimination of high cyanide consuming arsenic from arsenopyrite ores. the calcine is then quenched ground and returned to the plant.
processing sulfide ores historically miners have shipped their sulfide concentrates to overseas smelters that have little to no regulations or emissions controls. however with the implementation of the mercury export ban of 2008 and the high costs of installing equipment to prepare sulfide ores for cyanide leaching many companies are
corvus gold receives sulfide gold recovery of +90% using aao process at the north bullfrog project nevada. which produced a high-quality concentrate that averaged 92% gold in just 12% of the