Chapter 6 copper production technology the last boomin technological innovation for the copper industry occurred in the first two decades of this century, whenopen pit mining, flo tation concentration, and the reverberatory smelter were adapted to porphyry copper ores. Prior to the development of the solvent extraction electrowinning sxew process in 1959 see copper the green metal, the only way to recover copper from an acid solution was by a process called cementation. With the exception of leachingsolvent extraction electrowinning, the basic methods of copper production have remained unchanged for 65 years. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect.
It is the most important process used to produce some of the best quality copper may et al. The largest copper heap leach operations are in chile, peru, and the southwestern united states. The improvement in the leaching and solvent extraction technologies continues to increase the importance of copper electrowinning in the word copper production. A wide variety of electrowinning copper options are available to you. Minimizing lead contamination in copper produced by. This wellestablished, remarkable hydrometallurgical achievement fills an important role in our technical ability to extract. This historical event was done using sx kinetics modular solvent extraction and electrowinning pilot plant. The small investment requirement of leach solvent extraction electrowinning plants is due to the small equipment and infrastructure requirements of these processes.
A process for separating zinc and copper values from an aqueous solution of copper and zinc salts having a ph of between about 0. Copper leach solvent extraction electrowinning technology. Solvent extraction and electrowinning sxew is a twostage hydrometallurgical process that first extracts and upgrades copper ions from lowgrade leach solutions into a solvent containing a chemical that selectively reacts with and binds the copper in the solvent. The taguchi method was used to determine the optimum conditions for solvent extraction process of copper.
This process is essentially a series of cell batteries. Specifically, leaching and solvent extraction require much less equipment than concentrating, smelting, converting, and anode casting. Us3989607a solvent extraction and electrowinning of zinc. Copper recovery by solvent extraction has progressed from a technology with limited application for copper recovery from dilute sulfuric acid leach solution to a technology with broad application for copper recovery from a variety of leach solutions.
Ppt solvent extraction powerpoint presentation free to. Everyday low prices and free delivery on eligible orders. 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. How hydrometallurgy and the sxew process made copper the. The top countries of suppliers are china, india, from which the percentage of electrowinning for copper supply is 97%, 1% respectively. Jergensen ii, society for mining, metallurgy, and exploration inc. The project will use new zinc recovery technology, including leaching followed by solvent extraction and electrowinning. It is produced by leaching of copper ores, with solution purification by solvent extraction. A raffinate stream fed to a cyclone removes entrained organic phase which organic phase may be. Helsinki university of technology, laboratory of process control and. Winner of the standing ovation award for best powerpoint templates from presentations magazine. In this process, copper was in effect traded for iron by contacting the copper bearing solution with scrap iron.
A wide variety of electrowinning for copper options are available to you, there are 433 suppliers who sells electrowinning for copper on, mainly located in asia. Beginning in the mid 1980s a new technology, commonly known as the leach solvent extraction electrowinning process or, sxew process, was widely adopted. The process of electrolysis for copper was first developed in the late 19th century and despite numerous advancements in technology the principles and basic equipment remain the same. Over the last several decades copper solvent extraction electrowinning has proven to be a cost effective and adaptable technique for producing high grade copper. Selection and sizing of copper solvent extraction and. Selection and sizing of copper solvent extraction and electrowinning equipment and circuits english.
As with oxide ores, solvent extraction and electrowinning technologies are used to recover the copper from the pregnant leach solution. This study includes solvent extraction and electrowinning of copper from leaching process. Sxew stands for solvent extraction and electrowinning copper mining. Copper leaching, solvent extraction, and electrowinning technology gerald v. Download citation copper recovery using leachsolvent extractionelectrowinning technology. Copper cathodes were produced from a dump leaching project near balkhash, kazakhstan. Typical of electrowinning from aqueous solutions is copper electrowinning. This volume recognizes the growing role of solvent extraction and electrowinning technology in the world copper business. Get your kindle here, or download a free kindle reading app. Gold refining by solvent extractionthe minataur process. Copper moves from the leach solution into the solvent. Buy copper leaching, solvent extraction, and electrowinning technology by ii, gerald v.
Trends covered are fiberreinforced plastic construction mixer box and settler designs, reverse flow settlers, and advanced mixer design. In 2011 leaching, both heap leaching and insitu leaching, produced 3. Electrowinning of copper ions is derived from leaching or solvent extraction beukes and badenhorst, 2009. Solvent extraction and electrowinning listed as sxew. Although heap leaching is a low costprocess, it normally has recovery rates of 6070%. Solvent extraction and electrowining from copper leaching. Some thoughts on potential further advances in the technology are also given. Pdf a monitoring system for the copper solvent extraction. An improved method and apparatus is provided for the production of copper using a solvent extraction electrowinning process.
Copper leaching, solvent extraction, and electrowinning technology 1999. Today, worldwide, approximately 20% of all copper produced is produced by this is process. The ability that you get from copper leaching, solvent extraction, and electrowinning technology could be. Copper recovery using leach solvent extraction electrowinning technology 65 figure 2 and a alytic amount of lix 63, was introduced in 19657 and in march 1968 the first commercial copper lsxew operation, the bluebird plan of ranchers. Morenci copper mine, arizona mining technology mining. Copper leaching, solvent extraction, and electrowinning.
Copper enters the solvent extractionelectrowinning circuit due to the following equilibria. Sabinet copper recovery using leachsolvent extraction. Design of copper electrowinning circuit using conventional. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Copper leaching, solvent extraction, and electrowinning technology. The copper is extracted from the solvent with strong aqueous acid which then deposits pure copper onto cathodes using an. Pdf in this paper the current status of the modeling, simulation and. In an sxew reactor, the first process to take place is solvent extraction, which involves setting and. Solvent extraction has been used to produce high grade copper in since the invention of appropriate organic reagents in 1968 by general mills chemicals. Growing role of solvent extraction in copper ores processing 31 solvent extraction, in which the aqueous pregnant leach solution pls is vigorously mixed with an organic solvent, selectively recovers copper from pls, being acidic or ammonia solution. Copper leaching, solvent extraction, and electrowinning technology jergensen ii, gerald v. Reagent improvements have led the way, but they have been accompanied by innovations in leaching and improvements in electrowinning. Copper leaching, solvent extraction, and electrowinning technology by gerald v. Sxew technology involves leaching the process of dissolving useful ingredients with a solution in atmospheric conditions of copper ore heaps by means of diluted sulphuric acid.
This proceedings documents the present status of the sxew business. The improvement in the leaching and solvent extraction technologies continues to increase the importance of copper electrowinning into the word of copper production. The small investment requirement of leachsolvent extractionelectrowinning plants is due to the small equipment and infrastructure requirements of these processes. In addition, acid consumption in the cementation process exceeds that in solvent extraction electrowinning by about 1. Bryson synopsis the minataur process mintek alternative technology for au refining is a novel route for the production of highpurity gold using solvent extraction. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. The copper leaching, solvent extraction and electrowinning lxsxew process is one. This simple, elegant idea has resulted in a technology by which about 2. Solvent extraction is used to concentrate materials in an organic solution, while electrowinning is used to recover these pay elements. Sxew solvent extraction and electrowinning are distinct metallurgical unit operations that recover high purity metal from leachate solutions. On august 22, 2008, sary kazna llp with sx kinetics produced the first copper in kazakhstan by solvent extraction and electrowinning technology.
Process streams formed during the process containing entrained liquids are fed to a cyclone to remove either organic extractant or water aqueous solutions from the stream. Copper solvent extraction technology produces the most. Catch shorts early to protect damage to sxew processes extracting copper from organic material is paramount to profitable solvent extraction and electrowinning sxew processes, but undetected short circuits between anode and cathode can waste significant energy, time and money. The experimental parameters of solvent extraction were. Design of copper electrowinning circuit using conventional cells. Copper recovery by solvent extraction has progressed from a technology with limited application for. Folowing leaching, the pregnant leaching solution is transported via a drainage system to the next stage. This new copper technology utilizes smelter acid to produce copper from oxidized ores and mine wastes. Copper recovery using leachsolvent extractionelectrowinning. Gold refining by solvent extractionthe minataur process by a. Over the last several decades copper solvent extractionelectrowinning has proven to be a cost effective and adaptable technique for producing high grade copper. Us5849172a copper solvent extraction and electrowinning. The pairing of the unit operations solvent extraction electrowinning sxew is an accepted technology for the recovery of high quality copper and it has been used in combination with in situ leaching for copper recovery. The reagent lix 64, containing the ketoxime lix copper recovery using leachsolvent extractionelectrowinning technology.
The electrowinning of copper ions derived from leaching, or solvent extraction is a significant contributor to the global copper commodity supply. Solvent extraction and electrowinning how is solvent. Pdf solvent extraction and electrowining from copper leaching. This discussion of the leachsolvent extractionelectrowinning.
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