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  • LEACHING OF A ROASTED COPPER SULFIDE ORE - academia.edu

    LEACHING OF A ROASTED COPPER SULFIDE ORE Rosselle Kim P. Castillano, Wilfredo T. Gatdula Jr., Gin Derick L. Magno, Jhunalyn H. Parantar METE 157N: HYDROMETALLURGY LABORTORY ABSTRACT 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.

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  • Copper extraction - Wikipedia

    As with oxide ores, solvent extraction and electrowinning technologies are used to recover the copper from the pregnant leach solution. Supergene sulfide ores rich in native copper minerals are refractory to treatment with sulfuric acid leaching on all practicable time scales, and the dense metal particles do not react with froth flotation media.

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  • Recovery of Copper from Copper Sulfide Concentrate by ...

    fides and copper sulfide for med copper sulfate, whereas iron sulfide converted mostly to hematite at 500˚C [9]. In the present work, a sulfation roasting-acid leaching process that associated pyrometallurgical and hydro-metallurgical methods has been used for the recovery of copper from a copper sulfide concentrate. The reactions

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  • Heap Leaching Oxide and Sulfide Copper Ores

    Heap leaching is a simple means of recovering copper from oxide and oxide-sulfide ores. Although this method requires relatively low capital investment, it suffers from low copper recoveries and relatively high acid consumption.

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  • Copper Leaching Method - Metallurgist Mineral Processing ...

    A siliceous oxidized copper ore carrying from 1.5 to 2.0 per cent, metal may be profitably leached under favorable conditions; there are no other metallurgical means known for commercially handling ore of that character and grade. Copper Leaching Practices. For centuries small amounts of copper have been recovered from acid mine-drainage waters.

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  • What is the best method for sulfide copper leaching?

    What is the best method for sulfide copper leaching? ... One of the important subject in copper sulfide leaching, Ore Characterisation and related method. ... the CuS should be roasted before ...

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  • Roasting (metallurgy) - Wikipedia

    Roasting is a process of heating of sulfide ore to a high temperature in presence of air. It is a step of the processing of certain ores.More specifically, roasting is a metallurgical process involving gas–solid reactions at elevated temperatures with the goal of purifying the metal component(s). Often before roasting, the ore has already been partially purified, e.g. by froth flotation.

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  • Cobalt extraction - Wikipedia

    Recovery from copper-cobalt sulfide concentrates. The ores are treated by a sulfatizing roast in a fluidized bed furnace to convert copper and cobalt sulfides into soluble sulfates and iron into insoluble hematite.The calcine is subsequently leached with sulfuric acid from the spent copper recovery electrolyte.Oxide concentrates are introduced at this leaching step to maintain the acid balance ...

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  • Sulphide Leaching - Mineral Processing Metallurgy

    Copper sulphate can be used to separate Copper from Nickel in a sulphide ore or Copper from Fe in Cu -Fe sulphide ore. CuSO 4 solution can also be used for removing Pb, Zn, and Fe from copper sulphide ores. In presence of oxidizing agents: Ferric ion: Ferric sulphate or chloride react with metal sulphides liberating elemental sulphur, e.g.

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  • Gold Ore Roasting Techniques - Mineral Processing Metallurgy

    Metallurgical ContentRecover Gold by Roasting Pyrite OreRoasting of flotation concentratesRoasting Arsenopyrite Ore for GoldRoasting and leaching a sulphide concentrateRoasting and Processing Sulpho-telluride ore to recover goldFluoSolids Roasting SystemRoasting with a FluoSolids reactorWhy use Salts in the roasting processROASTING WITH SODA ASHGOLD LOSSES IN

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  • What is the best method for sulfide copper leaching?

    What is the best method for sulfide copper leaching? ... One of the important subject in copper sulfide leaching, Ore Characterisation and related method. ... the CuS should be roasted before ...

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  • Gold Ore Roasting Techniques - Mineral Processing Metallurgy

    Metallurgical ContentRecover Gold by Roasting Pyrite OreRoasting of flotation concentratesRoasting Arsenopyrite Ore for GoldRoasting and leaching a sulphide concentrateRoasting and Processing Sulpho-telluride ore to recover goldFluoSolids Roasting SystemRoasting with a FluoSolids reactorWhy use Salts in the roasting processROASTING WITH SODA ASHGOLD LOSSES IN

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  • Cobalt extraction - Wikipedia

    Recovery from copper-cobalt sulfide concentrates. The ores are treated by a sulfatizing roast in a fluidized bed furnace to convert copper and cobalt sulfides into soluble sulfates and iron into insoluble hematite.The calcine is subsequently leached with sulfuric acid from the spent copper recovery electrolyte.Oxide concentrates are introduced at this leaching step to maintain the acid balance ...

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  • Leaching of a Gold Bearing Partially Roasted Sulphide ...

    Leaching of a Gold Bearing Partially Roasted Sulphide. Laboratory Scale Studies M.F. Almeida* Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal Received: June 19, 2001; Revised: October 12, 2001 This research aimed at defining a route for recovering precious metals from a very heterogeneous

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  • EXTRACTION AND ECONOMIC UTILIZATION OF COPPER

    Table 7 Effect of Particle Size of Simple Roasted Ore on Copper Leaching 78 ... copper sulfide ores changes the mineralogy into leachable minerals. The additive roast leach processes gave about 85 percent to 98 percent copper leaching with low range of

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  • Roasting and Leaching Bulk Copper-Zinc Sulfide ...

    roasting and leaching a bulk copper-zinc sulfide concentrate, and the subsequent separation of the metals from the leach solution by electro-lytic deposition. The present practice of concentrating copper-zinc ores consists of two flotation processes one of Which involves selective flotation for the recovery of the su.lfides of each metal.

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  • LEACHING OF LOW-GRADE COPPER ORES: A CASE STUDY FOR

    The changes in copper content in the ore with the time of exploitation at the RTB mines [9] Oxide copper ore, mixed oxide-sulphide ores and low-grade copper sulphide ore, which, for economic reasons, cannot be enriched by flotation, may be processed by leaching methods. Agents for leaching copper

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  • Heap leaching - Wikipedia

    Both oxide and sulfide ores can be leached, though the leach cycles are much different and sulfide leaching requires a bacterial, or bio-leach, component. In 2011 leaching, both heap leaching and in-situ leaching, produced 3.4 million metric tons of copper, 22 percent of world production.

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  • Effect of Roasting Temperature for Copper Leaching of ...

    This study was undertaken to develop a cost-effective method of copper leaching in sulfide concentrate involving minerals as chalcopyrite and pyrite. ... h roasted; (c) 500˚C, 3 ... evaluate the ...

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  • Leaching kinetics of calcification ... - ScienceDirect

    27/7/2015  The multimetallic sulfide copper ore containing large amounts of lead and iron was roasted in air atmosphere in the presence of calcium oxide, and the calcinate obtained was leached in sulfuric acid solution to extract copper.

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  • EXTRACTION AND ECONOMIC UTILIZATION OF COPPER

    Table 7 Effect of Particle Size of Simple Roasted Ore on Copper Leaching 78 ... copper sulfide ores changes the mineralogy into leachable minerals. The additive roast leach processes gave about 85 percent to 98 percent copper leaching with low range of

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  • Bioleaching - Wikipedia

    Bioleaching is the extraction of metals from their ores through the use of living organisms.This 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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  • Jhunalyn Parantar - Academia.edu

    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 by giving the sulphide ore an oxidizing-sulphatizing roast.

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  • Copper processing - Roasting, smelting, and converting ...

    Copper processing - Copper processing - Roasting, smelting, and converting: Once a concentrate has been produced containing copper and other metals of value (such as gold and silver), the next step is to remove impurity elements. In older processes the concentrate, containing between 5 and 10 percent water, is first roasted in a cylindrical, refractory-lined furnace of either the hearth or ...

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  • The cuprex metal extraction process: Recovering copper ...

    The Cuprex™ metal extraction process produces cathode-grade copper using a hydrometallurgical process based on chloride leaching of sulfide ore concentrates. The

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  • In situ roasting and leaching of sulfide minerals ...

    3/5/1983  (g) leaching copper values from the center region of each roasted iron-copper sulfide mineral particle by introducing a leach solution into the fragmented mass of roasted iron-copper sulfide mineral particles and contacting the center region of each roasted iron-copper sulfide mineral particle with the leach solution for forming a pregnant ...

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  • (PDF) Leaching of Copper Sulphides - researchgate.net

    PDF In the ten years from 2003 to 2013 global mine production of copper has increased by over 23% to meet demand while the weighted average head grade has dropped from 0.9 to 0.7% Cu. These ...

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  • Acid leaching of oxide–sulfide copper ore prior the ...

    453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia

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  • Extraction of metals from complex sulfide ... - SpringerLink

    11/4/2017  Extraction of metals from complex sulfide nickel concentrates by low-temperature chlorination roasting and water leaching. ... and S. Ndlovu, Sulphuric acid leaching of zinc and copper from Nigerian complex sulphide ore in the presence of ... S.R. Grano, and K. Ehrig, Selective leaching of penalty elements from copper concentrates: a ...

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  • Diagnostic Leaching for Refractory Gold Ores - SRK

    A diagnostic leach test can be very useful to qualitatively assess how gold occurs within the ore and the extent to which it may be refractory. Several different permutations of diagnostic leach tests depend on specific objectives, but they generally involve the sequential leaching of a gold ore sample with progressively stronger reagents, producing a qualitative assessment of the gold ...

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