Processing Copper Sulphide Concentrates
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- Processing Copper Sulphide Concentrates
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 Fe(II)/Fe(III) redox couple acts in a catalytic manner in these reactions (shown for elevated-temperature reaction conditions where the sulfur-containing product …
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The electro-melting of the sulphide copper-nickel concentrates replaced blast smelting and reverberatory melting beginning in the 1950 s (Crundwell et al., 2011). During electro-melting, sulphur is removed via thermal decomposition of sulphide minerals and reaction between metal oxides and iron sulphides.
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The rapid leach kinetics and high copper recoveries place FL ROL's process economics on par with stirred-tank leaching of secondary copper sulphide concentrates. The key to the high performance of the process is the use of very low energy, inter-stage or intra-stage attrition along with the activation of the mineral to …
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copper-zinc concentrates elsewhere in the world, Fluidized bed roasting unit for sulfate roasting copper-cobalt sulfide concentrates at Jadot ville, Belgian Congo. Center background is 14-ft roasting unit. Overflow calcine from roaster is withdrawn dry and quenched in launderer at left. At right, dust collected from
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regulations have resulted in avoidance of high-arsenic copper sulfide concentrates and led to increased smelter penalties and lower acceptable amounts of arsenic in the concentrates treated (2). An example oflimits and penalties from the US is presented in Table 1. ... forming process and reduce the electrical conductivity of copper. The ...
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High arsenic copper sulfide concentrates (HACSC) are becoming increasingly common in the world. Copper pyrometallurgy brings a series of problems, such as arsenic-containing dusts and waste acids that are difficult to treat. Hydrometallurgical process is an attractive alternative to treat HACSC.
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The Cu/Zn separation performance of DEHTT played steadily and efficiently under the moderate alkaline (pH 9.5) condition acquired by NaOH or Na 2 CO 3, which could promote the cleaner recovery of copper sulfide ores and reduce of carbon emission.
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Chemical and mineralogical composition of the concentrates was determined. Sulfide concentrates were leached for 2 h under non-oxidative conditions, similar to those used in the first leaching stage of HydroCopper® process. It was shown that copper in bornite was the most active to dissolve in the studied environment.
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Chemistry of the Ammonia Pressure Process for Leaching Ni, Cu, and Co from Sherritt Gordon Sulphide Concentrates by F. A. Forward and V. N. Mackiw The paper relates to the laboratory and pilot plant studies that have been carried out by Sherritt Gordon Mines Ltd., Metallurgical Research Div., in developing the ammonia pressure leach process …
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Copper concentrates manufacturing process Copper concentrates are mainly produced by flotation. The ore is crushed and milled to a particle size of less ... The ground ore is mixed with water and reagents, to form a slurry, where the copper sulfide mineral particles bind to the reagent, rendering a hydrophobic complex. Submitted to aeration ...
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The economics of processing complex sulphide concentrates in the ISF. in (5), 773–782. Google Scholar ... Hydrometallurgical recovery of copper from concentrates and other sulphide materials. Company brochure, September 1983. Google Scholar McKay, D.R., and Parker, E.G. Hydrometallurgical upgrading of copper concentrate. in (5), 377–394. ...
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The objective of the project described here has been to investigate the feasibility of the chlorination-based process for treating copper-nickel sulfide flotation concentrates from the Duluth ...
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The solubility of sulfur in the silicate slag increases with increasing copper content of matte [2, 3, 26].Minto and Davenport [] claim that the presence of matte in silicate slag is the consequence of the "flotation" effect of sulfide particles with the bubbles of SO 2 gas produced by reduction of Fe 3 O 4 to FeO and FeS.Zhao [28, 29] found that the …
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The conventional nickel smelting and refining is the dominant strategy for nickel production from the sulfide nickel ores. The main disadvantages are the significant amount of SO 2 emissions during smelting and complex refining processes. In this paper, the authors investigated a solid-state nickel extraction method that recovered nickel …
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Based on the study of the mechanism of arsenic change with different oxygen contents, a new process of oxygen-controlled roasting is proposed and successfully applied in the pilot test, so that the residual arsenic content in copper concentrates is lower than the standard of arsenic content in imported minerals from China (0.5 wt.%).
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The conventional smelting and refining of Ni sulfide concentrates is an effective strategy for extracting Ni from sulfide ores. However, during the smelting process, sulfur is oxidized to sulfur dioxide (SO 2), which poses a significant environmental hazard.The present work investigates the feasibility of an alternative process to recover …
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In the context of developing a novel process route for metal extraction without sulphur dioxide emission and slag waste generation, we have studied the reduction of copper–cobalt sulphide ...
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Haver and Wong (1972) and Bartlett and Haung (1973) were the first to propose the AFR process in order to treat copper sulfide concentrates ( Haver and Wong, 1972;Bartlett and Haung, 1973). ...
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The current state of pressure leach technology allows for high copper extractions from arsenical copper concentrates, while producing an environmentally …
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Various pyrometallurgical methods for treating copper concentrates that contain appreciable arsenic are reviewed. ... "Environmentally friendly processing of copper minerals bearing arsenic and/or sulfur by ... "Roasting of complex concentrates with high arsenic content", Advances in Sulfide Smelting, Technology and Practice, (H.Y. Sohn ...
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Copper sulfide ore, which accounts for 80% of the copper resource, is the major source for the metallic copper [1]. The major copper sulfide ores contain chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4), covellite (CuS), and chalcocite (Cu 2 S). The concentrates of copper from sulfides ores are generally performed by flotation and then processed by ...
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In 2003, a high-temperature pressure leaching circuit to treat copper sulfide concentrates was commissioned at the copper/molybdenum operation at Bagdad, AZ. In late 2007, a medium-temperature pressure leaching circuit was commissioned at the Morenci mine in Arizona. The Morenci circuit was shut down in mid-2008, following a fire …
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The Mikheevskii MPE, producing 18 million t of porphyry copper ore per year (at a grade of 0.4% cop-per), applies the bulk-differential flowsheet and pro-duces copper and …
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An outline of a hydrometallurgical method employed for the processing of a copper sulphide concentrate is presented. It consists in leaching the concentrate with …
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The development of extracting hydrometallurgical process for copper sulphide mineral becomes one of the promising fields, not only for the copper production but also for the production of metal by ...
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DOI: 10.1201/9781315369853-10 Corpus ID: 139791859; Carbothermic Processing of Copper–Cobalt Mineral Sulphide Concentrates and Slag Waste for the Extraction of Metallic Values
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2.2 Challenges in Processing of Nickel-Copper Sulphide Ores. ... The hydrophobic group of phyllosilicate minerals, when inefficiently depressed in the flotation process, report to the nickel concentrates causing dilution and finding their ways to smelter furnaces and build up at the bottom. If the MgO level becomes too high in the …
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hydrometallurgical processing of nickel sulfide concentrates and whole ores may be a remedy to these issues and hydrometallurgy offers several advantages over pyrometallurgy such as potentially lower capital costs, the ability to process lower grade materials and produce marketable metals or compounds ... of nickel-copper …
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The sulfide minerals associated with copper, nickel, zinc, lead, and molybdenum concentrates are described according to their thermodynamic stability zones on Eh-pH diagrams. From these zones, the chemistry associated with various thermodynamically feasible decomposition paths is discussed, and process developments associated with …
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Discrete event simulation (DES) is an appropriate framework for the plant-wide analysis of copper smelters. These smelters apply a common set of chemical reactions: copper-iron sulfides are ...
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