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DYNAMIC MODELING OF AN INDUSTRIAL COPPER SOLVENT EXTRACTION PROCESS Tiina Komulainen1, Ari Rantala2, Sirkka-Liisa Jämsä-Jounela1 1 Lab or atry of Process Cont l and Au m ion, Helsinki University of Technology, P.O.BOX 6100, FIN- 02015 HUT, Finland Phone: +358-9-451 3859, Fax: +358-9-451 3854, email: [email protected]
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Hydrometallurgical extraction accounts for about 20% of total primary copper production. Most of this is produced by heap leaching. Heap leaching consists of trickling H2SO4-containing lixiviant ...
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Hydrometallurgical extraction is generally performed by leaching the metal from a mineral using a chemical reaction. A simple example is leaching copper from cupric oxide (tenorite) using sulfuric acid. ... SX is a process where copper is extracted and concentration from aqueous solutions (e.g., PLS) using an organic medium. The PLS is derived ...
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Leaching. Heap Leaching of Uranium; Solution Concentration and Purification; Metal Recovery; Contributors and Attributions; Hydrometallurgy involves the use of aqueous chemistry for the recovery of metals from ores, concentrates, and recycled or residual materials.This process is used in extraction of less electro positive or less reactive metals like gold and silver.
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Hydrometallurgical extraction accounts for about 4.5 million tonnes of cathode copper per year (about 20% of total primary copper production). Most of this is produced by heap leaching.
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Implementation of hydrometallurgical technique for copper production, using sol-vent extraction on an industrial scale, has strongly stimulated studies on synthesis of novel extractants as well as ...
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Heap leaching is the most important method of hydrometallurgical copper extraction. Heap leaching is used for treating oxide and lower-grade secondary sulfide ores that contain up to ∼2% Cu. The ore is crushed to a uniform particle size (typically 12–50 mm), often agglomerated, and then stacked on large flat-topped heaps in a controlled manner.. Heaps are typically ∼7 m high …
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This overview discusses selected modern applications of ion exchange in hydrometallurgical processes for uranium, precious metals, copper, cobalt, nickel, zinc, and the rare-earth elements, and ...
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Process Stages • Agitation leaching :A process where the soil is slurried with the extraction fluid for a period of time. When equilibrium between the metal on the soils surface and the metal contained by the solution is approached, the solubilization of the metal in the soil is slowed, and the extraction is considered to be complete.
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In 1976, Sridhar et al. introduced a pyrometallurgical process combined with hydrometallurgical extraction developed by the former International Nickel Company (Inco). The aim of this process is to reduce the mass that has to be leached in the hydrometallurgical process. 5
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All aluminum is made today using the Bayer process, a hydrometallurgical process. Approximately 20% of copper is made hydrometallurgically. Battery and e-waste recycling is done hydrometallurgically as well. The process varies from metal to metal. It depends on what metal you extract and the ore or host rock.
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Copper telluride slag from copper smelting process is an important source of tellurium (Te). In this work, an efficient and economical hydrometallurgical process for extracting Te from copper telluride slag was proposed. First, H2SO4 and NaClO3 were demonstrated to be effective for separating Te and Cu, and the leaching efficiency of Cu(II) reached 99.44 pct, …
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Download scientific diagram | Copper (Cu) Extraction by Hydrometallurgical Process from publication: Metallurgical treatment processes of metals (Fe and Steel, Al, Cu, Au) and their detrimental ...
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A process for the extraction of copper from a sulphide copper ore or concentrate comprises the steps of subjecting the ore or concentrate to agitation leaching at an elevated temperature and pressure to obtain a resulting acidic leach liquor containing dissolved copper and reducing the acidity of the resulting acidic leach liquor by effecting percolation leaching of a bed of low …
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developing a new hydrometallurgical process to convert copper sulphide concentrates to copper metal using known technologies in an innovative fashion. ... copper extraction occurring at retention times in excess of 60 minutes. Figure 2 summarizes the findings. Figure 2 - Autoclave Copper Extraction Results at Varying Retention Times ...
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In recent years, the principle and theory behind solvent extraction has gained wide acceptance as one of the new tools of modern hydro-metallurgy. With the growing demand for metals of ever higher purity, the increasing use of unusual metals, and the necessity for treating ores of lower grade and greater complexity, solvent extraction has joined the ranks of other …
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An overview for the utilization of wastes from stainless steel industries. Zhang Huaiwei, Hong Xin, in Resources, Conservation and Recycling, 2011. 3.1.1 Hydrometallurgical techniques. The hydrometallurgical process mainly consists of four steps: roasting, leaching, purification, electrowinning. It is a usual method for extracting the non-ferrous metals, such as zinc, lead, …
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During the last two decades the copper leaching, solvent-extraction and electrowinning (LX/SX/EW) process has become an important option in the production of copper from low …
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Let's explore a typical hydrometallurgical process for copper extraction: Leaching: Copper oxide ores are leached with sulfuric acid to produce a copper sulfate solution. In the case of sulfide …
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Fundamentally, solvent extraction (S-X) starts with a mass transfer operation in which a constituent of one solution is transferred to another solution through an interface between the two.
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Hydrometallurgical extraction accounts for about 4.5 million tonnes of cathode copper per year (about 20% of total primary copper production). Most of this is produced by heap leaching. Heap leaching consists of trickling H 2 SO 4 -containing lixiviant uniformly through flat-surfaced heaps of crushed ore, agglomerate, or run-of-mine ore.
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Abstract. 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 (FeCl 3 as oxidizing agent and ethylene glycol (EG) as organic solvent).
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Copper heap leaching is a rate-dependent process sensitive to copper mineralogy (copper oxides > secondary sulfides > hypogene sulfides), driven by the pH of the leach solution, the activity of ...
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A hydrometallurgical method has been proposed for the 99% extraction a~d recovery of copper from indige~ous ... parameters, such as, the effect of temperature, acid concentration and digestion time have been optimiscd, The process developed has been made more cost effective by recycling used solvent. ... left behind after the extraction of ...
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Three hydrometallurgical process options for recycling of copper and precious metals from waste PCBs are proposed and optimized: the use of selective leachants for recovery of high purity metals ...
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Hydrometallurgy is the process of extraction of metals from their ores. It is an extractive metallurgy technology that involves the use of aqueous chemistry to recover metals from ores, concentrates, and recycled or residual …
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Copper hydrometallurgy the leaching of siliceous low-grade copper-bearing ores and waste rock that cannot be processed economically by milling and concentrating is an important low-cost process for recovering copper. In the free world, the United States is the principal user of this process, and in 1965 nearly 10 percent of the U.S. production of primary …
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[50] Fogarasi S, Lucaci F, Egedy A, Lucaci A, Ilea P. Eco-friendly copper recovery process from waste printed circuit boards using Fe3+/Fe2+ redox system. Waste Management 2015; 40:136-143. [51] Gande V, Vats S, Bhatt N, Pushpavanam S. Sequential recovery of metals from waste printed circuit board using a zero-discharge hydrometallurgical process.
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In the West, the Rio Tinto Mines in Spain began copper extraction by wet methods in 1752, which was almost the same as the copper hydrometallurgy in the Northern Song Dynasty of China. ... Austrian chemist K.J. Bayer invented the Bayer process in which aluminum oxide was extracted from bauxite by the hydrometallurgical process and which was ...
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One of the most successful applications of hydrometallurgy is the recovery of copper from oxide and sulfide ores. Let's explore a typical hydrometallurgical process for copper extraction: Leaching: Copper oxide ores are leached with sulfuric acid to produce a copper sulfate solution. In the case of sulfide ores, a bacterial leaching process ...
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A good example to illustrate how reagents are generated in hydrometallurgical flowsheets is the solvent extraction–electrowinning (SX-EW) process in copper metallurgy, sometimes referred to as the leach–solvent …
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increase the copper extractions.37–40 Methanesulfonic acid, an organic acid was used as an alternative for mineral acid for extraction of copper from chalcopyrite.41,42 However, these systems were in general water-rich processes. In this paper, we describe a green solvometallurgical process for the extraction of copper from sulfidic ore minerals,
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Most recently, hydrometallurgical copper recovery methods have been developed to process concentrates of more complex ores with the objective of eliminating the sulfur dioxide …
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All aluminum is made today using the Bayer process, a hydrometallurgical process. Approximately 20% of copper is made hydrometallurgically. Battery and e-waste recycling is done …
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Leaching is the solid-liquid extraction of metal values from a solid matrix into the leaching media called leachant [24]. Since the extraction is the decisive step to achieve the recovery of the target metals, this operation represents the core of hydrometallurgical processes. Therefore, it …
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