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202369 · This paper provides an overview of hydrometallurgical copper extraction studies in which liquid extraction technology has been used with four copper deposits of different compositions. The sulfuric acid consumption rate and copper extraction efficiency, which are dependent on the initial content and forms of calcium compounds and other …
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The Process The concentrated ore is heated strongly with silicon dioxide (silica) and air or oxygen in a furnace or series of furnaces. The copper (II) ions in the chalcopyrite are reduced to copper (I) sulfide (which is reduced further to copper metal in the final stage).
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202231 · Drawing on recent experimental and commercial developments, this review reappraises potential substitute leach reagents for cyanide in the gold mining sector. In addition to extraction, the application of these reagents in the gold processing, pre-treatment and gold purification stages is explored. The main objective here is to discuss how the …
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Direct extraction of copper from copper sulfide minerals using deep eutectic solvents † Syahrie Anggara,a Francesca Bevan,a Robert C. Harris, a Jennifer M. Hartley, ab Gero Frisch, b Gawen R. T. Jenkin c and Andrew P. Abbott *a Author affiliations
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The Cuprex™ metal extraction process produces cathode-grade copper using a hydrometallurgical process based on chloride leaching of sulfide ore concentrates. The process incorporates several novel steps to overcome the major problems associated with earlier chloride-based processes, including mild leaching conditions using ferric chloride …
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2020624 · The oxidation of sulfide-based ores is industrially relevant as it facilitates the extraction of valuable metals and eliminates undesired elements from an ore. Even though oxidation can be done thermally (pyrometallurgy), solution-based (hydrometallurgical) methods are currently sought as they represent a more sustainable …
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20191213 · Extraction of copper from sufidic ores, either by pyrometallurgy or hydrometallurgy, has various limitations. In this study, a solvometallurgical process for the extraction of copper from sulfidic ore minerals (chalcopyrite, bornite, chalcocite and digenite) was developed by using an organic lixiviant (FeCl3
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8 · In order to achieve effective separation of copper-zinc minerals and improve the quality of concentrates, this paper proposes and solves a series of key issues based on the properties of the ore. Through systematic research and process optimization, it aims to provide theoretical support and practical guidance for the flotation separation ...
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2018924 · Abstract Copper oxide ore has a complex composition, and a low recovery rate is often achieved via the traditional sorting method. A new combined process of flotation–high-gradient magnetic separation–leaching is proposed here to recover copper minerals. The test results showed that the flotation process was successful when using …
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202081 · This paper introduces Zijinshan Mine where an integrated process was developed and applied to recover copper from low-grade copper sulfide ore and acid mine drainage (AMD). The process includes the main operations of milling-flotation, heap bioleaching, solvent extraction-electrowinning (HBL-SX-EW) and copper precipitation.
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