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Ores containing silver in Arsenic and Antimony combinations offer considerable difficulties in cyanidation and it has usually been considered that the removal of these compounds by concentration was the only way to deal with them G H Clevenger however when working on the ores of the Nipissing Mining Company of Ontario Canada found that by grinding exceedingly fine and treating with Request PDF on ResearchGate Evaluation of leaching parameters for a refractory gold ore containing aurostibite and antimony minerals Part I Central zone A cyanidation
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The Influence of Arsenic in the Cyanidation of Gold Ores is explained by W B Blyth has he is of the opinion that the presence of arsenic in an ore does not necessarily cause that ore to be refractory to cyanide treatment He thinks the idea arose from the fact that arsenic is so often accompanied by antimony pyrrhotite or graphite stating that “the two former minerals cause premature Dec 20 32 The purpose of roasting is to remove arsenic and antimony which are harmful to the cyanidation process Thermal treatment of flotation flotation concentrate The vast majority of polymetallic sulphide ores containing gold and silver are treated by this method When flotation of such ores gold and silver enter into the copper concentrate or
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The reaction for the dissolution of metallic silver in cyanide solutions is analogous to that for the dissolution of gold The occurrence of metallic silver in ores however is not common the silver is more likely to occur in the sulphide form either as the plain sulphide or in combination with sulphides of copper arsenic antimony and leadThe reaction for the dissolution of metallic silver in cyanide solutions is analogous to that for the dissolution of gold The occurrence of metallic silver in ores however is not common the silver is more likely to occur in the sulphide form either as the plain sulphide or in combination with sulphides of copper arsenic antimony and lead
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The leaching parameters were 800 ppm NaCN DO 16 ppm and pH 105 for a duration of 120 hours The associated cyanide consumption was 40 kg/t Gold leaching was not sensitive to cyanide concentration Reducing the cyanide concentration to 250 ppm resulted in a gold extraction of 895 with a cyanide consumption of 26 kg/tThe roasting method can be adopted for the gold ore with a high grade of gold containing arsenic or gold concentrate The roasting method includes oxidation roasting and solidification roasting Its purpose is to expose the gold fully and improve the rate of gold cyanide leaching 5 The gold and copper are recycled together
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The only simple sulphide mineral of antimony of importance is stibnite SbS3 containing 718 antimony when pure It is lead grey has a densityof 45 to 46 and melts at 546 176 C It is both friable and sectile Hardness 2 on Moh’s scale and as a result slimes very readily during milling It is commonly associated with Alternative lixiviants to cyanide for leaching gold ores 517 to the halide systems the stability of gold in solution and the lack of a suitable recovery option appear to restrict them as a simultaneous leaching and recovery process For sulfide ores containing a combination of base precious and platinum group metals these processes may be
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gold ore contain antimony 250tph river stone crushing line in Chile 200tph granite crushing line in Cameroon 250tph limestone crushing line in Kenya 250tph granite crushing line in South Africa 120tph granite crushing line in Zimbabwe 400tph crushing plant in Guinea Chat OnlineCyanidation of gold ores containing copper silver ScienceDirect Jul 1 Cyanidation of gold ores containing copper silver lead arsenic and first sample contained 105 ppm gold with high arsenic and antimony
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Cyanidation of gold ores containing copper silver lead arsenic and antimony International Journal of Mineral Processing sample Received 11 December contained 105 ppm gold with high arsenic and antimony The second sample had a low gold content Received in revised form 27 February 25 ppm but a high silver content In general the pulp should contain a certain amount of unbonded cyanogen then the gold cyanide leaching can keep normal And the specific dosage of cyanide agent should be determined according to the property of gold ore 4 Pulp density
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Cyanidation of gold ores containing copper silver lead processing gold in antimony ores Cyanidation of gold ores containing copper silver lead processing of gold antimony ores tbilisi georgia Know more Chapter 10 Mineral resources Summary Georgia is rich in However the mining and extraction of mineral resources can have Jul 01 32 Cyanidation of gold ores containing copper silver lead arsenic and antimony Since a large proportion of gold ores contain sulfide minerals the effects of these minerals on gold dissolution in cyanide solution have interested many researchers
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Gold containing antimony ore is a type of refractory gold in which gold is intimately associated with stibnite Guo et al When the traditional cyanidation method is used for gold extraction thioantimonate by stibnite decomposition reacts with oxygen to form antimony acid salt or antimonyComparison Data With Sodium Cyanide In order to probe the difference of leaching effect between NaCN leaching agent and CNFREE leaching agent on gold ore ITAO select a total of six gold mineral samples the Sultan Kush oxidized gold ore Tanzania Busolwa Mining Ltd oxidized gold ore Tanzania MMG GOLD LIMITED oxidized gold ore and mixed ore containing oxidized ore and primary ore
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Jul 01 32 Read Cyanidation of gold ores containing copper silver lead arsenic and antimony International Journal of Mineral Processing on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at your fingertipsImproved gold and silver extraction from a refractory antimony ore by pretreatment with alkaline sulphide leach The latter mineral was identified to be the most important sulphide phase for the occurrence of gold and silver Cyanide leaching of the ore consistently resulted in low extraction of gold 49 and silver 18 confirming the
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May • Vol 26 No 2 114 MINERALS METALLURGICAL PROCESSING Determination of the leaching parameters for a refractory gold ore containing aurostibite and antimony minerals ALKALINE OXIDATIVE LEACHING OF GOLD BEARING ARSENOPYRITE ORES By P Bhakta 1 J W Langhans Jr 1 and K P V Lei2 ABS rRACT The US Bureau of Mines developed an alkaline oxidative pretreatment leaching procedure to increase the recovery of gold from arsenopyrite FeAsS or The best solution compositions for
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Cyanidation of gold ores containing copper silver lead arsenic and antimony Kinetics Mechanism Bulletin M Noaparast Read more Gold cyanidation Wikipedia the free encyclopedia kinetics of cyanidation of gold However silver can be beneficial or detrimental to the kinetics of gold cyanidation depending on the mineralogy and the Gold cyanidation also known as the cyanide process or the MacArthur Forrest process is a hydrometallurgical technique for extracting gold from low grade ore by converting the gold to a water soluble coordination complex It is the most commonly used leaching process for gold extraction
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