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copper sulfide leaching

Heap leaching is a simple means of recovering copper from oxide and oxidesulfide ores Although this method requires relatively low capital investment it suffers from low copper recoveries and relatively high acid consumption cost per ton crushing and screening stone in south africa price

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  • copper sulfide leaching

    Copper Mining and Extraction Sulfide Ores Copper has a remarkable combination of properties It is a good electrical and thermal conductor It is ductile and it can prevent bacterial growth see Copper Properties and Applications As with all world resources the supply of copper from the ground is limited

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  • copper sulfide leaching

    ii Copper Leaching To have an idea of bioleaching process copper leaching by bacteria is described as an example Covellite chalcocite and chalcopyrite are generally used as copper ores for bioleaching processes Apart from containing copper the ores also contain other elements like iron zinc and sulphur

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  • copper sulfide leaching

    Copper sulfide Some copper sulfides are economically important ores Prominent copper sulfide minerals include Cu 2 S chalcocite and CuS covellite In the mining industry the minerals bornite or chalcopyrite which consist of mixed copperiron sulfides are often referred to as copper sulfides

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  • copper sulfide leaching

    Nickel ores The method is an acid heap leaching method like that of the copper method in that it utilises sulfuric acid instead of cyanide solution to dissolve the target minerals from crushed ore The amount of sulfuric acid required is much higher than for copper ores as high as 1000 kg of acid per tonne of ore

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  • copper sulfide leaching

    All copper sulfides require the presence of Fe 3 and O 2 as oxidizing agents for leaching to occur The copper sulfide is oxidized by Fe 3The resulting Fe 2 is reoxidized to Fe 3 by O FeIIFeIII redox couple acts in a catalytic manner in these reactions shown for elevatedtemperature reaction conditions where the sulfurcontaining product is sulfate rather than the elemental

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  • copper sulfide leaching

    Copper processing is a complicated process that begins with mining of the ore less than 1 copper and ends with sheets of 9999 pure copper called cathodes which will ultimately be made into products for everyday most common types of ore copper oxide and copper sulfide undergo two different processes hydrometallurgy and pyrometallurgy respectively due to the different

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  • copper sulfide leaching

    By boiling away the ammonia copper is precipitated as a sulfide and sent to a smelter Hydrogen sulfide is added to the autoclave to remove nickel sulfide and copper sulfide which is fed back to the leaching process Air is then passed through the solution in the autoclave for oxyhydrolysis

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  • copper sulfide leaching

    The aim of this study was to improve the dissolution of copper sulfide ore composed mainly of chalcopyrite 121 wt and bornite 054 wt using a pretreatment before leaching The effect of the pretreatment on copper sulfide dissolution was investigated using different types of leaching Three sets of experimental tests were performed flask reactor and minicolumn

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  • copper sulfide leaching

    Bioleaching is the extraction of metals from their ores through the use of living is much cleaner than the traditional heap leaching using cyanide Bioleaching is one of several applications within biohydrometallurgy and several methods are used to recover copper zinc lead arsenic antimony nickel molybdenum gold silver and cobalt

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  • copper sulfide leaching

    Further through the use of biooxidation it is now possible to leach many of the copper sulfide minerals present in the ore While chalcopyrite remains refractory to ambient temperature bioleaching other copper sulfide minerals the secondary sulfide minerals such as chalcocite covellite bornite etc are leachable by todays technology

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  • copper sulfide leaching

    All copper sulfides require the presence of Fe 3 and O 2 as oxidizing agents for leaching to occur The copper sulfide is oxidized by Fe 3 The resulting Fe 2 is reoxidized to Fe 3 by O 2 The FeIIFeIII redox couple acts in a catalytic manner in these reactions shown for elevatedtemperature reaction conditions where the sulfurcontaining product is sulfate rather than the elemental sulfur that forms

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  • copper sulfide leaching

    Primary copper sulfides are the most economically relevant due to their abundance Therefore several technologies have been developed in order to achieve an efficient copper extraction from these types of copper sulfides Among these developments the hydrometallurgical options of bioleaching as well as chemical chloride leaching are prevailing for copper sulfides due to their good results at lab pilot and

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  • copper sulfide leaching

    The aim of this study was to improve the dissolution of copper sulfide ore composed mainly of chalcopyrite 121 wt and bornite 054 wt using a pretreatment before leaching The effect of the pretreatment on copper sulfide dissolution was investigated using different types of leaching

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  • copper sulfide leaching

    Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions but a very high extraction can be obtained if the copper ore is in the oxidized condition The problem is to convert the sulphide into the oxide form This can be done

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  • copper sulfide leaching

    Bioleaching involves the use of microorganisms to catalyze the oxidation of iron sulfides to create ferric sulfate and sulfuric acid Ferric sulfate which is a powerful oxidizing agent then oxidizes the copper sulfide minerals and the copper contained is then leached by the sulfuric acid formed

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  • copper sulfide leaching

    Copper hydrometallurgy is a branch of metallurgy method to extract copper directly from those difficulttoconcentrate copper oxide ore Traditional copper hydrometallurgy process typically consists of atmospheric leaching solvent extraction SX and electrowinning EW It can produce either copper cathode or copper sulphate crystal

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  • copper sulfide leaching

    Here the copper is extracted away from the aqueous phase leaving behind most of the impurities that were in the leach solution Since the copper ion is exchanged for hydrogen ion the aqueous phase is returned to its original acidity and recycled to the leaching step of the process

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  • copper sulfide leaching

    The leaching reagent dilute sulfuric acid is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap where it dissolves the copper from the ore The resulting “pregnant” leach solution of sulfuric acid and copper sulfate is collected in a small pool

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  • copper sulfide leaching

    Bioleaching is the extraction of metals from their ores through the use of living is much cleaner than the traditional heap leaching using cyanide Bioleaching is one of several applications within biohydrometallurgy and several methods are used to recover copper zinc lead arsenic antimony nickel molybdenum gold silver and cobalt

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  • copper sulfide leaching

    Leaching Oxide Ores with Sulfuric Acid Copper sulfate solution is collected in the pregnant leach pond then pumped to the solvent extraction plant The solvent extraction phase of treatment occurs in two stages During the initial phase an organic solvent is used to recover copper ions contained in the pregnant leach solution

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  • copper sulfide leaching

    Aug 20 2015 · Evolution of copper ore mill grade at the Bingham Canyon mine USA This would result in a dramatic expansion of the technology as 80 of total ore types are sulfide in nature Heap Leaching

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  • copper sulfide leaching

    low quality copper from the leach solution on scrap iron was practiced on oxide ore that was too lowgrade for vat leaching or low grade sulphide ore that had to be mined in order to expose the underlying high grade sulfide ore Copper recovered from leaching low grade copper ores was considered a bonus and little effort had been made to fully

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  • copper sulfide leaching

    leaching step and that produced in the extraction of copper fro m the pregnant leach solution PLS is available for use in a copper heap lea ching unit process In this way an a cid credit to

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  • copper sulfide leaching

    Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta Chile was investigated after leaching with a chlorideferrous media at two temperatures The study focused on whether this chemical leaching system could be applied at an industrial scale

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  • copper sulfide leaching

    The sulfation roastingleaching experiments were carried out at a laboratory scale2 g The addition of Na 2SO 3 and copper sulfide concentrate were mixed well in a mortaragate followed by roasting in a muffle electric furnace The roasted sample was then cooled to room temperature and leached with 5 H 2SO 4 VV at room tem

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  • copper sulfide leaching

    A method of leaching copper sulfide ores wherein the growth of microorganisms present on ore surfaces and in a leaching solution is inhibited and the pH of the leaching solution is adjusted to 15 or less upon leaching of copper from copper sulfide ores containing chalcopyrite is provided

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  • copper sulfide leaching

    Bacterial and chemical uninoculated shake flask leaching of Sarcheshmeh copper concentrate at 15 wv pulp density 150 rpm and stirred tank electrochemical bioleaching of the concentrate at

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  • copper sulfide leaching

    Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta Chile was investigated after leaching with a chlorideferrous media at two temperatures

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  • copper sulfide leaching

    The effect of mechanical activation on the copper leaching of copper sulfide CuS in 1 M HNO3 slurry density 10 gL was investigated by analysis of the leachability and the apparent activation

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  • copper sulfide leaching

    Three copper sulphide leaching and refining processes are discussed total pressure oxidation ferric sulphate leaching and copper chloride leaching

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  • copper sulfide leaching

    leaching or low grade sulphide ore that had to be mined in order to expose the underlying high grade sulfide ore Copper recovered from leaching low grade copper ores was considered a bonus and little effort had been made to fully understand the leaching process or to maximize copper recovery While some fundamental leaching studies had

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  • copper sulfide leaching

    Prominent copper sulfide minerals include Cu 2 S and CuS In the mining industry the minerals bornite or chalcopyrite which consist of mixed copperiron sulfides are often referred to as copper sulfides In chemistry a binary copper sulfide is any binary chemical compound of the elements copper

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  • copper sulfide leaching

    The main copper mineral chalcopyrite CuFeS 2 is not leached very efficiently which is why the dominant copperproducing technology remains flotation followed by smelting and refining The leaching of CuFeS 2 follows the two stages of being dissolved and

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  • copper sulfide leaching

    Phelps Dodge Copper Pressure Leaching Developments Phelps Dodge Placer Dome have developed a suite of proprietary processes including High temperature process HT Converts essentially all sulfide sulfur to acid Maximizes acid production Suitable for locations where dilute acid can be used beneficially Medium temperature process MT

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  • copper sulfide leaching

    Leaching of oxidesulfide copper ore The influence of time and H2SO4 concentration on the leaching degree of oxide copper leached out from the ore sample was determined and presented in Figure 3 Figure 3 Leaching efficiency vs process time for different H2SO4 concentrations in the leaching solution

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  • copper sulfide leaching

    through to other leaching processes such as the bacterial leaching of gold sulfide concentrates where ferric iron promotes the dissolution of pyrite and arsenopyrite 22 In addition numerous studies showed that leaching of chalcopyrite in chloride media results in higher copper

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  • copper sulfide leaching

    Copper as a Wear Metal If copper associated with wear is suspected perhaps it is best to prepare a filtergram and perform a microscopic analysis of the particles Because copper suspensions from cooler core leaching and coolant leaks are soluble or the associated copper particulates are smaller than 1

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