The commonest ore used in the extraction of copper is chalcopyrite cufes 2 also known as copper pyrites and other such sulfides. Solvent extraction electrowinning is the most dominant leaching process used today in the recovery of copper from chemical solutions. With innovative products, global field support and industry leading technical expertise, basf mining solutions provides sustainable solutions which increase productivity, recovery and flexibility. Solvent extraction studies of copper and zinc have been carried out using versatic 10 acid and cyanex 272 separately from a model brass pickle liquor. To ensure consistent operation, a good understanding of the circuits operation and an ability to rapidly troubleshoot key parameters is required. Solvent extraction a separating technique distribution.
Journal of hazardous materials b120 2005 1118 solvent extraction applied to the recovery of heavy metals from galvanic sludge j. Secondary solvent extraction circuits are often required to attain satisfactory overall recoveries. Extraction of heavy metals from aqueous solutions in a. It is a liquidliquid extraction process used to purify and concentrate solutions obtained from the leaching of ores. Copper extraction refers to the methods used to obtain copper from its ores.
The most common method of liquidliquid extraction is. The taguchi method was used to determine the optimum conditions for solvent extraction process of copper. Liquidliquid extraction, mostly used in analysis, is a technique in which a solution is brought into contact with a second solvent. Liquidliquid extraction is a method by which a compound is pulled from solvent a to solvent b where solvents a and b are not miscible. Separation of copper and nickel by solvent extraction. This paper briefly discusses the modeling of solvent extraction circuits. Design of this 2ex1s configuration was based on the expected value of copper extraction efficiency of 90%. The transfer of copper from a cui chloride solution to a cuii sulfate solution requires extraction with a hydroxyoxime extractant as is used normally in the processing of sulfatebased copper leach. Examples of application of solvent extraction techniques in chemical, radiochemical, biochemical, pharmaceutical, analytical separations, and wastewater treatment. Introduction during the last two decades the copper leaching, solventextraction and. Copper can be extracted from nonsulphide ores by a different process involving three separate stages. Reaction of the ore over quite a long time and on a huge scale with a dilute acid such as dilute sulfuric acid to produce a very dilute copper ii sulfate solution. Applications of solvent extraction linkedin slideshare. Solvent extraction applied to the recovery of heavy metals.
In addition, acid consumption in the cementation process exceeds that in solvent extractionelectrowinning by about 1. When the sulphuric acid copper lsxew flow sheet figure 1 was put forth by the minerals. Solvent extraction sx of copperii from ammonia solutions proceeds similarly to that from acidic solutions, but complexation of metal m by ammonia ligands must be considered. Reaction of the ore over quite a long time and on a huge scale with a dilute acid such as dilute.
Pdf available in solvent extraction and ion exchange 15. Metal ion extraction liquidliquid extraction, also called solvent extraction sx, is a wellknown separation technique, widely used for separation of such metal ions as alkali metals. Control of an industrial copper solvent extraction process core. Heap leaching of oxide copper ores and cathode copper recovery by solvent extraction sx and elec trowinning ew has been well. Copper leaching, solvent extraction, and electrowinning. The conversion of copper consists of a series of physical and electrochemical processes. Students use solvent extraction to isolate and concentrate a solute. Although the first largescale application of copper recovery by solvent extraction took. This wellestablished, remarkable hydrometallurgical achievement fills an.
The operations are typically heap and dump leaching, with permanent pads rather than onoff pads to minimize operational costs. Solvent extraction experiments were carried out in two stages. With this two level control strategy the production of the copper solvent extraction process is. Although the first largescale application of copper recovery by solvent extraction sx took place in zambia in the early 1970s, it is only in the last decade that this technology has become widely employed in this part of the world and is now a mainstay unit operation in most copper hydrometallurgical flowsheets.
Solvent extraction and separation of copper and zinc from. Development group of general mills in 1960 solvent extraction had. Maccabe thiele method was introduced in design of copper solvent extraction configuration when copper solvent extraction technology started to be used for highgrade copper ore. Pdf hydrometallurgical treatment of complex copper sulfidic ores, byproducts and concentrates requires aggressive, oxidative leaching. Extraction of copper mining, concentration, smelting. Find details about the methods and significance of this type of extraction. Selective separation of copper and nickel by solvent. This study includes solvent extraction and electrowinning of copper from leaching process. Copper leaching, solvent extraction, and electrowinning technology gerald v jergensen download bok. Recent advances in liquidliquid extraction focuses on the applications of liquid extraction. Copper solvent extraction, dynamic simulation, first principles modeling, mixersettler. Solvent extraction, consists of transferring one or more solute s contained in a feed solution to another immiscible liquid solvent. A wellperforming solvent extraction circuit is a key part of producing good quality copper cathode. Students construct graphs to represent data and analyse them.
Pdf this study includes solvent extraction and electrowinning of copper from leaching process. Analytical chemistry applications of solvent extraction names of participants ayesha saleem, namra babar, amina ashraf, ayesha bibi, kainat. Wells center for the management, utilization and protection of water resources and department of chemistry. The problems related to the separation of undesirable and toxic metals are also discussed. Solvent extraction in hydrometallurgical processing of polish copper. Solvent extraction of copper from chloride solution i. Evaluation of copper solventextraction circuit data and. Extraction of copper at elevated feed concentrations sgs. Various solvent extraction reagents and processes have. 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. Copper can be extracted from nonsulfide ores by a different process involving three separate stages. A wellperforming solventextraction circuit is a key part of producing good quality copper cathode. The liquid cation exchanger consisted of naphthenic.
The solvent extraction method recovers almost all the oils and leaves behind only 0. This volume recognizes the growing role of solvent extraction and electrowinning technology in the world copper business. Solvent extraction of cu, mo, v, and u from leach solutions of copper. Solvent extraction although solvent extraction as a method of separation has long been known to the chemists, only in recent years it has achieved recognition among analysts as a powerful.
Maccabe thiele method was introduced in design of copper solvent extraction configuration. In the case of mechanical pressing the residual oil left in the oil cake may. Students are tasked to prepare a salicylaldoxime ligand and samples of the corresponding copper and nickel complexes, before performing test extractions and uvvis spectroscopic analysis. To ensure consistent operation, a good understanding of the circuits operation and an ability to. In addition, acid consumption in the cementation process exceeds that in solvent extraction electrowinning by about 1. Today, solvent extraction has become an important economical, practical and clean hydrometallurgical process and the technique is one of the most versatile methods used for the extraction, separation and recovery of metallic species from aqueous media 1,2. As the name suggests the method involves two major stages. Liquid liquid extraction download ebook pdf, epub, tuebl. Solvent extraction and electrowining from copper leaching. However, techniques such as solvent extraction and precipitation have not proven cost effective in separating and recovering the cobalt from these lowgrade domestic sources. Solvent extraction is one of the most common and important methods for separation and purification of many elements. Pdf solvent extraction of copperii from concentrated leach liquors.
Concentration of the copper ii sulfate solution by solvent extraction. Two immiscible unmixing liquids are stirred and allowed to separate, causing the copper to move from one liquid to the other. Solvent extraction is a frequently used technology in hydrometallurgy. Copper recovery using leachsolvent extractionelectrowinning technology. Dissolution of copper from ore in sulfuric acid solvent, collection of solvent for cementation or solvent extraction remove copper from pregnant ieachate and remove some impurities remove copper. Solvent extraction of cu, mo, v, and u from leach solutions of copper ore and flotation tailings. Pdf growing role of solvent extraction in copper ores.