Heap Leaching • Used extensively in copper • South Western USA and Chile • Oxide ores using a simple acid reaction • More recently applied to sulphide ores • Application of heap leaching and SX/EW is widely regarded as reviving the US copper industry • Huge potential for application to copper sulphides • Cost advantages
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2 5 Fundamentals of sulphide leaching 2 6 Previous investigation on nickel copper and cobalt sulphide leachinig 2:7 Moss spectroscopy 2 1 Hydrometallurgy LITERATURE SURVEY Hydrometallurgy will have an increasing role to play in the future regarding the extraction of valuable metals from sulphide minerals
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Sulphuric acid leaching of zinc and copper from Nigerian Complex Sulphide Ore in the presence of hydrogen peroxide by P A Olubambi*† J O Borode† and S Ndlovu* Synopsis The leaching of zinc and copper from Nigerian bulk sulphide ore with sulphuric acid in the presence of hydrogen peroxide was studied The aim of the study was to
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The present invention relates to a new hydrometallurgical process for recovering nickel from nickel bearing raw materials such as sulphide flotation concentrates In general the process involves the oxidative atmospheric pressure leaching of nickel sulphide concentrates using a sodium chloride/hydrochloric acid based leach media
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copper sulphide leaching process - palmietvalleyestatecoza WO2013163712A1 Sulfide ore leaching process Google Patents This present invention refers to a process for leaching sulfide ores and particularly to a process for leaching chalcopyrite ore for recovering copper [7/27 Online] copper sulphide ore flotation processing plant
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UNLOCKING VALUE IN COPPER ARSENIC SULPHIDE RESOURCES WITH THE COPPER–ARSENIC CESL TECHNOLOGY Robert Bruce Keith Mayhew and Robert Mean Teck Resources Limited (CESL Limited) Canada Harald Kadereit Adrian Nagy and Ole Wagner Aurubis Germany ABSTRACT
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Finely grained samples of copper(I) sulphide were leached by H 2 SO 4 solution with added NaNO 3 The occurrence probability of chemical reactions was analysed based on literature data and products which were formed during the process and
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1 Leaching of a low-grade copper-nickel sulfide ore 1 Key parameters impacting on Cu recovery during column bioleaching H R Watling1* A D Elliot 1 M Maley 2 W van Bronswijk2 and C Hunter3 1 AJ Parker Cooperative Research Centre for Integrated Hydrometallurgy Solutions CSIRO Minerals PO Box 7229 Karawara Western Australia 6152
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The method includes contacting of sulphide containing product with water solution of sulphuric acid of concentration more than 1 8 g/dcm 3 at presence of ions of trivalent iron and oxidisation of bivalent iron in the leaching solution
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Justia Patents US Patent Application for COPPER SULPHIDE LEACHING IN FERROUS CHLORIDE MEDIUM WITH BACTERIA Patent Application (Application #20170335275) COPPER SULPHIDE LEACHING IN FERROUS CHLORIDE MEDIUM WITH BACTERIA Aug 24 2015 A method for leaching secondary and primary sulphides of copper in a ferrous
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Hydrometallurgical Treatment of a Zinc Concentrate by Atmospheric Direct Leach Process 3 H O 2Fe 2H 2H O 2Fe 3 2 2 2 2 + ++ +↔ + + (3) The objective of the present study was to investigate the dissolution of zinc and other valuable metals such as copper indium and silver from a zinc sulphide concentrate
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roa st Copper sulphate is soluble in water so acid will be saTed in the leaching process if copper sulphate is present The iron in the copper sulphide ores is present as pyrite or in combinations as bornite or chalcopyrite The object of the roast is to convert a considerable portion of the copper to the oxide form and a lesser amount to
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Copper is extracted in large amounts from the Earth's crust by mining of sulphide ores and also oxide ores The procedure of copper processing involves mining and transporting Oxide ores are generally processed through hydrometallurgy- heap leaching solvent extraction and electrowinning The sulfide ores are usually processed using the method of pyrometallurgy-
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Methods of leaching sulphide ores can be: in absence of oxidizing agents in presence of oxidizing agents Bacterial leaching Absence of oxidizing agents Acid leaching: Dilute acids dissolve some metal sulphides with liberation of H2S e g ZnS + 2H+ ^ Zn2+ + H2S Three types of sulphides can be encountered Completely soluble sulphides: Zns CoS NiS FeS Slightly
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Audit of BioHeap process technology for Heap Bio-Leaching of chalcopyrite nickel sulphide and other sulphide ores - Pacific Ore Limited – WA – Australia (2005) Gossan Hill Project - WA - Australia - Newmont - Review of previous metallurgical testwork recommendations for additional testwork and provision of testwork procedures for copper oxide/mixed ore heap leaching
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A method of leaching copper from a copper sulfide ore which includes adding a potential adjustment agent for lowering a potential of a leaching solution obtained after leaching copper from the copper sulfide ore by using iodide ion and iron (III) ion the leaching solution being stored in a tank for storing the leaching solution
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PROCESS OPTIMISATION OF MIXED COPPER ORES THROUGH REAL-TIME MINERALOGICAL ANALYSES Paquot F X * K Keet** Mumbi M * * Kansanshi Copper Mines First Quantum Minerals Zambia ** Blue Cube Systems (Pty) Ltd South Africa ABSTRACT Open cast mining on the Zambian Copperbelt is challenged with transitional zones containing both copper
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Leaching offers an alternative to copper mining First the ore is treated with dilute sulphuric acid This trickles slowly down through the ore over a period of months dissolving copper to form a weak solution of copper sulphate The copper is then recovered by electrolysis This process is known as SX-EW (solvent extraction/electrowinning)
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Copper sulfide ore has better floatability than sphalerite pyrite and another sulphide so it is more likely to float from the pulp by adsorpting collector Therefore froth flotation process is the main mineral process method used for the extraction of copper from copper sulphide
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12/11/1985Copper content in sulphide-containing materials such as ores or concentrates is extracted by leaching the material by means of a leaching solution containing iron (III) chloride and copper (II) chloride the leaching process being regulated in order to keep the red-ox potential in the leach solution between 430 mV and 460 mV whereby iron (III) chloride is
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gold leaching either using the same process at elevated temperature (40–60 C) as patented by the authors or using a cyanidation process Copper selective leaching will reduce the gold losses due to a cementa-tion mechanism of gold in the presence of metallic copper as all of the metallic copper will dissolve in the pre-leaching stage
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Copper sulfide ore has better floatability than sphalerite pyrite and another sulphide so it is more likely to float from the pulp by adsorpting collector Therefore froth flotation process is the main mineral process method used for the extraction of copper from copper sulphide
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2 5 Fundamentals of sulphide leaching 2 6 Previous investigation on nickel copper and cobalt sulphide leachinig 2:7 Moss spectroscopy 2 1 Hydrometallurgy LITERATURE SURVEY Hydrometallurgy will have an increasing role to play in the future regarding the extraction of valuable metals from sulphide minerals
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