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cyanidation of gold ores containing antimony in gabon

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cyanidation of gold ores containing antimony in gabon

The clean production process for extracting antimony from refractory gold ore involves sodium sulfide leaching pressure oxidation concentration and crystallization steps First the stibnite in the refractory gold ore reacts with sodium sulfide and antimony is dissolved into the leaching solution in the form of sodium thioantimonite Eq

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  • Processing Gold In Antimony Ores  Odanah School
    Processing Gold In Antimony Ores Odanah School

    The clean production process for extracting antimony from refractory gold ore involves sodium sulfide leaching pressure oxidation concentration and crystallization steps First the stibnite in the refractory gold ore reacts with sodium sulfide and antimony is dissolved into the leaching solution in the form of sodium thioantimonite Eq

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  • Treatment of Antimonial Gold Ores  ScienceDirect
    Treatment of Antimonial Gold Ores ScienceDirect

    Jan 01 2016 · Improvements in mineralogical identification and understanding of the chemistry of the cyanidation process with antimony present are leading to improved treatment processes for antimonial gold ores Updates from commercial operations are discussed along with plant design concepts using alkaline pretreatment and lowalkalinity pressure leaching

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  • Arsenic and Antimony Sulphide Minerals in Cyanidation
    Arsenic and Antimony Sulphide Minerals in Cyanidation

    The successful cyanidation of gold ores containing appreciable amounts of arsenic or antimony sulphide minerals such as orpiment realgar and stibnite is usually difficult or even impossible Extractions are low and the solutions soon become ‘foul’ The gold in such ores could be free and uncoated and no trouble in dissolving it in clean cyanide solutions would be expected However

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  • PDF Cyanidation of gold ores containing copper silver
    PDF Cyanidation of gold ores containing copper silver

    Jul 01 2010 · Cyanidation tests on two ore samples from two different gold deposits are reported The first sample contained 105 ppm gold with high arsenic and antimony The second sample had a low gold content

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  • 17  Flotation of Gold Ores
    17 Flotation of Gold Ores

    175 FLOTATION OF GOLDCONTAINING MERCURYANTIMONY ORES In general these ores belong to a group of difficulttotreat ores where cyanidation usually produces poor extraction Mercury is partially soluble in cyanide which increases consumption and reduces extraction A successful flotation method 5 has

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  • How is Sodium Cyanide Consumed during Gold Cyanidation
    How is Sodium Cyanide Consumed during Gold Cyanidation

    The cyanidation plants has been using sodium cyanide to dissolve the gold from the ore in order to recover the gold from the leaching solution The formula is as follows 2Au4NaCNO22H2O→2NaAuCN22NaOHH2O2

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  • Improved gold and silver extraction from a refractory
    Improved gold and silver extraction from a refractory

    Jan 01 2011 · Because of the intimate association of gold and silver found with antimony minerals the leaching behavior of antimony from the ore was also monitored during the alkaline sulphide leach tests In the alkaline leaching tests the effects of particle size temperature and concentrations of Na 2 S and NaOH on the removal of antimony and the extraction of gold and silver in subsequent cyanide leaching

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  • Leaching of gold oregold ore beneficiation process design
    Leaching of gold oregold ore beneficiation process design

    existence of insoluble gold compounds In some ores gold exists in the form of tellurides such as tellurium gold ore tellurium silver gold ore tellurium antimony gold ore tellurium copper gold ore solid solution silver gold ore and other alloys They play a very important role in cyanide solution slow

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  • Cyanide Leaching Chemistry  Gold Cyanidation
    Cyanide Leaching Chemistry Gold Cyanidation

    The reactions that take place during the dissolution of gold in cyanide solutions under normal conditions have been fairly definitely established Most agree that the overall cyanide equation for leaching and cyanidation of gold is as follows 4 Au 8 NaCN O2 2 H20 4 NaAuCN2 4 NaOH

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  • Process FlowSheet for Gold and Antimony Recovery from
    Process FlowSheet for Gold and Antimony Recovery from

    Recovery of gold from refractory ores requires a pretreatment to liberate the gold particles from the host mineral In particular in the case of stibnite Sb2S3 the antimony Sb forms stable

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