The development programme includes extensive hydrometallurgical testwork that is being managed by kvaerner. Pdf recently, very unfavorable trends of decreasing copper content and increasing complexity of the polish copper ores as well as lowering. Hydrometallurgical techniques are quickly gaining acceptance as a reliable and cheap method for extracting copper from their ores. Hydrometallurgical extraction of copper and cobalt from. The ore is crushed andor ground to improve reactivity and then contacted with a solution containing naclhclnaocl. About 80 % of primary copper production comes from lowgrade or poor sulfide ores. Hydrometallurgical extraction and reclamation by jackson, e.
She regularly presents accredited continuing professional development training courses, many of which focus on hydrometallurgy of copper. Various hydrometallurgical methods have been developed using lixiviants such as acids, bases, and salts for base metal extraction. Stages of hydrometallurgical processes supervisor dr. Us5223024a hydrometallurgical copper extraction process. Pressure oxidation leach is a typical hydrometallurgical process used to. A typical example is pressure reduction of nickel or copper from a solution by hydrogen.
Simple method for extracting gold from electrical and electronic wastes using hydrometallurgical process mohammad aali dehchenari1, saeed hosseinpoor2, rahim aali3, nilowfar salighehdar iran4, mohsen mehdipour5 1bsc of mechanic engineering,young researchers and elite club, majlesi branch, islamic azad university, isfahan, iran 2instructor of civil engineering structure, department of. The development of ion exchange, solvent extraction, and other processes has led to an extremely broad range of applications of hydrometallurgy, now used to produce more than 70 metallic elements. Hydrometallurgical separation of zinc and copper from. Efficient mineral processing and hydrometallurgical. Hydrometallurgical processing of liion battery scrap from. Hydrometallurgical copper recovery can be conveniently considered in two stages. Hydrometallurgical oxidized minerals, copper sulfide chalcocite hydrometallurgical extraction of copper leaching heap, preceded by. Processing techniques that complement hydrometallurgy are pyrometallurgy, vapour metallurgy, and molten salt electrometallurgy. She is a coauthor of extractive metallurgy of copper 5th ed.
Concept for a hydrometallurgical processing of a copper. The processes employed for solu tion concentration and purification in the hydrometallurgical processing of include manganese precipitation, cementation, solvent extraction and ion exchange. After enrichment steps, the copper concentrates are usually treated by pyrometallurgical methods. At an optimal energy consumption of 1,520 kw hjst, 95 pct of the copper was extracted. Hydrometallurgical extraction of copper and cobalt from oxidised copper cobalt ore using ammonia solution.
Rob mean innovation in hydrometallurgical plants a sustainable hydrometallurgical process to develop copper deposits challenged with high arsenic teck resources limited keith mayhew. Hydrometallurgical approach for leaching of metals from copper. Hydrometallurgical processes of antimony extraction from. The problems related to the separation of undesirable and toxic metals are also discussed. Present paper focuses on the selective recovery of copper from the enriched ground printed circuit boards pcbs using leaching and solvent extraction. The adaptation of the solvent extraction process to the metallurgical industry has been extremely slow up until recent years. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Hydrometallurgical process for copper recovery from waste.
Karimi reyhane mazahernasab 916181007 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The most important operation in hydrometallurgy is. Compared to conventional extraction methods such as froth flotation, smelting and refining, hydrometallurgical techniques are. In recent years, most of the activities on the recovery of base and precious metals from waste pcbs are focused on hydrometallurgical techniques as more exact, predictable and easily. Electrokinetic applications in hydrometallurgical copper. In largescale hydrometallurgical production for example, in leaching copper from oxidized ores in lumps the process is sometimes carried out by means of washing piles of ore with weak solutions of sulfuric acid. Besides most gold and much silver, large tonnages of copper and zinc are produced by hydrometallurgy.
We use small cameras to follow the path of copper ore as it is processed into pure copper sheets. Simple method for extracting gold from electrical and. Pdf recent advances in the hydrometallurgy of copper. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors. Copper extraction refers to the methods used to obtain copper from its ores. Pyro and hydrometallurgical copper processing p3 youtube. Hydrometallurgical process an overview sciencedirect. Seliee thabane 11668 a dissertation submitted to the faculty of engineering and the built environment at the university of witwatersrand, johannesburg, in partfulfilment of the requirements for the degree of master of science in. Waste printed circuit boards wpcbs, as the main component of the waste, are significant source of base and precious metals, especially copper and gold. In conventional sx plants this will recover up to 98% of the copper still leaving 0. A hydrometallurgical process for treating copper feed materials containing gold andor silver by simultaneously leaching copper, gold andor silver into an aqueous cyanide solution, recovering copper in metallic form by electrowinning and regenerating cyanide ions is provided, wherein high current efficiencies are achieved at high current densities and at low copper concentrations. Hydrometallurgical extraction accounts for about 2.
The sulphuric acid concentrations will depend upon the leaching techniques used, and the composition of the zinc calcine. Beneficiation by froth flotation of ore to give copper concentrate. A process for the extraction of copper from a copper ore or concentrate comprises first subjecting the ore or concentrate to agitation leaching at an elevated temperature and pressure in the presence of oxygen and water to obtain a resulting acidic leach liquor which contains dissolved copper. Review of hydrometallurgical recovery of zinc from. Copper is traditionally known as the red metal after its natural color. Hydrometallurgical considerations in processing arsenicrich copper concentrates.
Hydrometallurgical considerations in processing arsenic. Pdf solvent extraction in hydrometallurgical processing of polish. Outotec hydrometallurgical nickel plants and processes. Hydrometallurgical processing of liion battery scrap from electric vehicles proceedings of emc 2011 5 the leaching process is inevitable for the whole recycling process. A process has been developed to extract gold, silver, indium, gallium, lead, copper, zinc, and other metals from a large resource using an oxidizing acid chloride heap leaching technology. Hydrometallurgical production of copper from flotation. Pdf hydrometallurgical recovery of metals from ewaste. Hydrometallurgical copper extraction process cominco. How copper is extracted, crushed, and sent to the two major processing methods. In this work, the usage of solvent extraction for copper and cobalt is investigated. Hydrometallurgical extraction of precious, rare and base. Hydrometallurgy the treatment of primary raw materials minerals or mineral concentrates or secondary raw materials endoflife products by aqueous solutions, in order to achieve the dissolution of the metals to be recovered solvent extraction in hydrometallurgy a purification or concentration unit operation. Generally, copper extraction follows the sequence see figure below. The metalenriched ground sample obtained from the beneficiation of the sized pcbs in a laboratory scale column type air separator contained mainly 49.
As an operating procedure this process was initiated during the war years as part of the atomic energy effort. The conversion of copper consists of a series of physical and electrochemical processes. Sole and others published solvent extraction in the hydrometallurgical processing and purification of metals. Indeed, patinized copper is the architectural focal point of many modern buildings for its natural look. Most nonconventional hydrometallurgical methods of the processing of complex sulfide ores are based on metals extraction from bulk flotation concentrates 2.
Us5667557a hydrometallurgical extraction and recovery of. The recovery of zinc, lead and copper by froth flotation, even as a relatively rich concentrate, presents today a rather routine problem. Hydrometallurgical article about hydrometallurgical by. When equilibrium between the metal on the soils surface and the metal contained by the solution is. The acidity of the resulting acidic leach liquor is then reduced by affecting percolation leaching of. Hydrometallurgical method for recovery of zinc, copper and cadmium from their ferrites. Hydrometallurgy is a technique within the field of extractive metallurgy, the obtaining of metals from their ores. Electrochemical processing is always used in producing highpurity copper. Solvent extraction of copper from zinc sulphate leach solutions using lix 622 and the effect of organic contamination on zinc electrowinning. Semantic scholar extracted view of design of coppercobalt hydrometallurgical circuits by graeme miller. Hydrometallurgy involve the use of aqueous solutions for the recovery of metals from ores, concentrates, and recycled or residual materials.
Solvent extraction of copperii from concentrated leach liquors. However, it is also known as a green metal for the green patina that it acquires due to weathering. Metals from lowgrade metal containing secondary raw materials new recovery processes for critical and valuable metals chromic smart combinations of existing methods and new technological innovations to extract valuable and critical metals from slags ss fecr. Hydrometallurgy conference 2009, the southern african institute of mining and metallurgy, 2009. Rice3 abstract dissolution of chalcopyrite with acidified ferric sulfate produces a sulfur layer on the unreacted chalcopyrite surface that interferes with further dissolution.
D, hydrometallurgical process development for complex ores and concentrates. This paper focuses on the role of solvent extraction sx in recovering valuable metals from pregnant leach solutions. Hydrometallurgical extraction and reclamation 1986. Hydrometallurgical extraction of copper and cobalt from oxidised coppercobalt ore using ammonia solution. The extraction and recovery of metals from their ores by china nonstandard special material equipment industry hydrometallurgical. Typical hydrometallurgical processes used for pgm purification are as follows. Improvement in copper and cobalt production due to inclusion of solvent extraction of copper at mopani copper mines plcs. Hydrometallurgical extraction and reclamation pdf hydrometallurgical extraction and reclamation has 1 available editions to buy at alibris.
Data concerning the preparation of antimony and complex ores by pyrometallurgical and hydrometallurgical methods, as well as results on developing a procedure for the hydrometallurgical processing of slime antimony concentrates using chloride dealkalization, have been presented. Hydrometallurgical production of copper from flotation concentrates by j. Copper production from recycled endofuse objects is about 15% of copperfromore copper production. The main disadvantage of the direct hydrometallurgical treatment of the. This chapter focuses on heap leaching for refined copper production, which is a hydrometallurgical copper extraction method. Leaching time, temperature, acid concentration and additives are chosen in such a way that the.
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. The pregnant liquor was clarified and tested for typical solvent extraction. Dutrizac symposium on copper hydrometallurgy cu2007 volume iv, book 2 by p. The feed aqueous solution to purify or concentrate is put in contact. How hydrometallurgy and the sxew process made copper the. Hydrometallurgical treatment of haib copper ore by w. Schlitt synopsis the namibian copper joint venture has been formed to undertake development of the haib copper deposit, one of the largest undeveloped copper resources in africa.
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