Nhydrometallurgical extraction of copper pdf

This pregnant leach solution is then retrieved for recovery at a solvent extraction and electrowinning sxew plant. After enrichment steps, the copper concentrates are usually treated by pyrometallurgical methods. Hydrometallurgical extraction and reclamation 1986 edition. In the present investigation a zinc copper ore from the maranda mine, located in the murchison greenstone belt, south africa, containing sphalerite zns and chalcopyrite cufes 2. Hydrometallurgical processing of copper smelter dust for. Processing of konkola copper concen trates and chingola. Hydrometallurgical extraction of copper and cobalt from. Hydrometallurgical considerations in processing arsenicrich. Compared to conventional extraction methods such as froth flotation, smelting and refining, hydrometallurgical techniques are slower and generally reserved for low grade ores or mine wastes.

Karimi reyhane mazahernasab 916181007 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The most commonly used route in the hydrometallurgical extraction of zinc and copper from a sulphide ore is the concentrateroastleachelectro winning process. In the first circuit of the proposed process, copper was selectively extracted by acorga m5640 at ph 1. Us3949051a hydrometallurgical process for extracting. The history of copper cementation on iron the worlds first. Oct 25, 2008 an attempt has been made in this investigation to develop a wet chemical method for treating a rheniumcontaining lead slime produced during copper manufacture. For a high degree of metal extraction from an ore, the dissolution of the value metals must be as complete as possible, which is the primary consideration in the implementation of any leaching operation. Pdf hydrometallurgical recovery of metals from ewaste. Heap leaching consists of trickling h 2 so 4 containing lixiviant uniformly through flatsurfaced heaps of crushed ore, agglomerate, or runofmine ore.

If your goal is to produce copper sulfate crystals, you can dissolve the copper again with sulfuric to produce a strong solution for crystallization. The project investigated hydrometallurgical options for recovery of copper in flotation tailings, that would be sent to the tailings dam from a copper processing circuit. The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different. This paper presents a promising hydrometallurgical process to recover precious metals from waste pcbs. 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. This paper presents a promising hydrometallurgical process to. Solvent extraction in hydrometallurgy a purification or concentration.

The copper bearing aqueous phase is advanced to the electrowinning ew stage of the process while the barren organic phase is returned to the extraction stage of the process. Improvement in copper and cobalt production due to inclusion of solvent extraction of copper at mopani copper mines plcs. Zinc smelting is the process of converting zinc concentrates ores that contain zinc into pure zinc. Two distinct processes are involved in hydrometallurgy. Abstract copper sulphides concentrates, from the flotation process of copper primary ore. Hydrometallurgy involves the use of aqueous chemistry for the recovery of metals from ores, concentrates, and recycled or residual materials. Understanding impurities in copper electrometallurgical processes by paul laforest a thesis presented to the faculty of the graduate school of the missouri university of science and technology in partial fulfillment of the requirements for the degree master of science in metallurgical engineering 2015 approved by michael s. Due to high operating temperature and corrosiveness of the pgm melt, premature failure of the waffle copper coolers has been experienced in pgm smelters 24 in the upper sidewall region.

The technology should be suitable for retrofits, e. Pospiech department of chemistry, faculty of materials processing technology and applied physics, czestochowa university of technology, al. Copper waffle coolers are typically used in the cold face of the refractories to extract heat away from the refractories. Modification of phenolic oximes for copper extraction ross stewart forgan doctor of philosophy university of edinburgh may 2008. Hydrometallurgical treatment of a zinc concentrate by.

Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors. Copper hydrometallurgical pilot plant core recently carried out an oxidative leach pilot plant to demonstrate copper recovery from a low grade chalcopyrite concentrate. At an optimal energy consumption of 1,520 kwhst, 95 pct of the copper was extracted. The copper containing solutions are drained into collecting tanks and then into cementation units. May 31, 1994 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 lowgrade copper.

Hydrometallurgical separation of zinc and copper from. Hydrometallurgical extraction of zinc and copper a 57fe. Us3949051a hydrometallurgical process for extracting copper. The pregnant liquor was clarified and tested for typical solventextraction recovery of the copper. Sep 19, 2012 in contrast, batch experiments and the subsequent data analysis indicated that the sequence of solvent extraction circuits using pc88a, acorga m5640, and trinoctylamine toa extractants effectively separates four metals of interest. 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. Introduction the most important operation in hydrometallurgy is leaching of properly prepared. Hydrometallurgical article about hydrometallurgical by the. A typical application involves addition of scrap iron to a solution of copper ions.

Copper is precipitated as its sulfide as a means to purify nickel leachates. The hydrometallurgical extraction of rhenium from copper. Bioleaching is the extraction of a metal from sulfide ores or concentrates using materials found native to the environment. Cementation is the conversion of the metal ion to the metal by a redox reaction. Most nonconventional hydrometallurgical methods of the processing of complex sulfide ores are based on metals extraction from bulk flotation concentrates 2.

Hydrometallurgical process for extracting copper from chalcopyrite or bornite concentrates. Bowes synopsis the konkola deep mining project kdmp seeks to exploit the deep level potential of the konkola deeps orebody, producing high grade. Generally, copper extraction follows the sequence see figure below. Us5223024a hydrometallurgical copper extraction process. How copper is extracted, crushed, and sent to the two major processing methods. Processing of konkola copper concentrates and chingola refractory ore in a fully integrated hydrometallurgical pilot plant circuit by r. Radiometric methods were applied for process optimization. Very poor ores are treated by hydrometallurgical process.

C with the chalcopyriteferric sulfate system resulted in copper extraction exceeding 99 pct. Throughout this paper, copper sulphides describes both mixed copper. The problems related to the separation of undesirable and toxic metals are also discussed. Hydrometallurgical copper extraction process cominco. The most common zinc concentrate processed is zinc sulfide, which is obtained by concentrating sphalerite using the froth flotation method. Pdf new hydrometallurgical process for gold recovery. Copper processing is a complicated process that begins with mining of the ore less than 1% copper and ends with sheets of 99. At an optimal energy consumption of 1,520 kw hjst, 95 pct of the copper was extracted. In respect to copper extraction, the most effective variables were temperature and the addition of nacl. Hydrometallurgical extraction accounts for about 4. Copper flotation tailings, extraction, hydrometallurgy, radiotracer.

As an operating procedure this process was initiated during the war years as part of the atomic energy effort. 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. Hydrometallurgical considerations in processing arsenic. The pgms of particular interest are platinum, palladium, ruthenium and rhodium, while the bms of interest are copper and nickel. Recovery of metals from printed circuit boards pcbs. Faqs with regards to operating a cu er tankhouse above 400 am2 pdf. Davenport department of materials science and engineering. In conventional sx plants this will recover up to 98% of the copper still leaving 0. Apr 05, 20 stages of hydrometallurgical processes supervisor dr. The recovery of zinc, lead and copper by froth flotation, even as a relatively rich concentrate, presents today a rather routine problem. Hydrometallurgy aims to compile studies on novel processes, process design, chemistry, modelling, control, economics and interfaces between unit operations, and to provide a forum for discussions on case histories and operational difficulties. In other words, bioleaching is the commercialization of the ability of certain bacteria and archaea, found in nature, to catalyze the oxidation of sulfide minerals. Hydrometallurgical production of copper from flotation concentrates by j.

Hydrometallurgical options to add value to copper projects. Waste printed circuit boards wpcbs, as the main component of the waste, are significant source of base and precious metals, especially copper and gold. Hydrometallurgy article about hydrometallurgy by the. Semantic scholar extracted view of design of copper cobalt hydrometallurgical circuits by graeme miller. About 80 % of primary copper production comes from lowgrade or poor sulfide ores. Copper hydrometallurgy is a branch of metallurgy method to extract copper directly from those difficulttoconcentrate copper oxide ore. Besides most gold and much silver, large tonnages of copper and zinc are produced by hydrometallurgy. Hydrometallurgical extraction of platinum group metals from a. Solvent extraction or liquidliquid extraction is another method to separate compounds based on their relative solubility in two different immiscible liquids. Copper extractions have been found tobevariable, depending on such factors as age of the con centrate, whether itwasstored wet or dry, whether it had been pre leached with hydrochloric acid for the removal ofzinc, etc. The waste copper smelter dust csd is a rich secondary resource for copper as shown by the chemical composition of the south african palabora coppers smelter plant csd that assayed 18. Hydrometallurgical techniques are quickly gaining acceptance as a reliable and cheap method for extracting copper from their ores. Copper can be extracted from nonsulfide ores by a different process involving three separate stages. The effects of temperature, grain size, oxygen partial pressure, and leaching time as well as the kinetics of the leaching process were studied.

The ore concentrate, as a byproduct, represents only 5 % of the total pgm value but as much as 70 % of the total tonnage of material processed in the concentrator plant. Hydrometallurgical options to add value to copper projects and operations peter rohner core resources, brisbane. 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. Rock is considered to be ore when enough copper minerals are present for mining. Solvent extraction of cu, mo, v, and u from leach solutions of copper.

Solvent extraction in hydrometallurgical processing of polish copper concentrates article pdf available in physicochemical problems of mineral processing 46. Electrokinetic applications in hydrometallurgical copper. Leading cost effective solutions for hydrometallurgical treatment ausenco has delivered a diverse array of hydrometallurgy and refining projects across the globe, particularly in the areas of gold, uranium and copper. Apr 16, 2010 hydrometallurgical extraction and reclamation by jackson, e.

Hydrometallurgy, extraction of metal from ore by preparing an aqueous solution of a salt of the metal and recovering the metal from the solution. The extraction and recovery of metals from their ores by processes in which aqueous solutions play a predominant role. Leaching of primary copper sulfide ore in chlorideferrous. However, gold and silver, which are often associated with pyrite, can be rejected to tho tailings during flotation. Understanding impurities in copper electrometallurgy. Rice3 abstract dissolution of chalcopyrite with acidified ferric sulfate produces a sulfur layer on the unreacted chalcopyrite surface that interferes with further dissolution. The separation of zinc and copper from brass ash residues was evaluated using a hydrometallurgical route comprised of two main steps. A new hydrometallurgical process has been developed for recovery of gold from secondary sources such as gravitational concentrates from alluvial sands. Copper precipitates as its sulfide as a means to purify nickel leachates. Extraction of copper from sulphide ore large amount of copper are obtained from copper pyrite cufes2 by smelting. 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. In the electrowinning stage of the process the copper is reduced electrochemically from copper sulfate in solution to a metallic copper cathode. Abstract 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.

We use small cameras to follow the path of copper ore as it is processed into pure copper sheets. Armii krajowej 19, 42200 czestochowa, poland corresponding email address. Hydrometallurgical recovery of copper from leach liquor of polymetallic nodules in solvent extraction process b. The recovery of precious metals from waste printed circuit boards pcbs is an effective recycling process. A process for extracting copper from a copper containing concentrate by comminuting the concentrate in the presence of a liquid dispersing agent which inhibits agglomeration and forms a pulp, and leaching the pulp in the presence of a silver catalyst. 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. To simplify the metal leaching process, large pieces of pcbs were used instead of a pulverized sample. Beneficiation by froth flotation of ore to give copper concentrate.

The successful development of the cyprus copper process has been an evolutionary series of events covering a time span of some seven years. The recovery was effected using the combination of acidithiobacillus ferrooxidans and 2 m hno 3. The conversion of copper consists of a series of physical and electrochemical processes. The pregnant liquor was clarified and tested for typical solvent extraction. Hydrometallurgical extraction of copper and cobalt from oxidised copper cobalt ore using ammonia solution. Hydrometallurgy is a technique within the field of extractive metallurgy, the obtaining of metals from their ores. In a previous work, the high pressure sulphuric acid leaching behaviour of a typical lateritic ore containing 106 gt scandium was studied and it was found that 80. Modification of phenolic oximes for copper extraction. This paper focuses on the role of solvent extraction sx in recovering valuable metals from pregnant leach solutions.

Their flowsheet forthe treatment ofcopper zinc concentrates isshown infig. Hydrometallurgical recovery of copper from leach liquor of. Keep in mind that your copper solutions may be worthless if they are not upgraded. The copperspeci c extracta nts used to extract c opper f rom other base metals in acidic sulfate liquors a re known as hydroxyoximes, and t he interact ion is k nown as chelation. Copper extraction refers to the methods used to obtain copper from its ores. This process is used in extraction of less electro 23. Sobral1 1centre for mineral technologycetem keywords. Hydrometallurgy involve the use of aqueous solutions for the recovery of metals from ores, concentrates, and recycled or residual materials. Extraction of copper by smelting process following steps are involved in the extraction of copper. You may want to consider an iron precipitation step to convert weak solutions to copper metal. Thebasicequations forthe dissolution reactions areasfollows. The adaptation of the solvent extraction process to the metallurgical industry has been extremely slow up until recent years.

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. The processes employed for solu tion concentration and purification in the hydrometallurgical processing of include manganese precipitation, cementation, solvent extraction and ion exchange. Design of copper hydrometallurgy plants for high grade ores. The precipitation of copper on iron from natural solution is a classical example of a relatively ancient art which has been applied successfully for centuries to produce copper on a commercial scale.

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. Very simply, it converts copper concentrates of varying composition into copper metal which has been proven to be equivalent in every way to electrolytic tough pitch copper suitable for electrical applications. The method applied to extraction of copper from mine water has been practiced in china since 1086 a. Feed acid concentrations in the range tested had a minor impact. A hydrometallurgical process for the separation of aluminum. The copperbearing aqueous phase is advanced to the electrowinning ew stage of the process while the barren organic phase is returned to the extraction stage of the process. How hydrometallurgy and the sxew process made copper the. Design of copper hydrometallurgy plants for high grade ores and copper concentrates david dreisinger university of british columbia vancouver, canada. The leaching of metals was experimented using inorganic acid.

Ores containing 4% or more copper are treated by smelting process. Pyro and hydrometallurgical copper processing p3 youtube. Most of theunleached copper canbefloated from the residue and recycled. Traditional copper hydrometallurgy process typically consists of atmospheric leaching, solvent extraction sx and electrowinning ew. Pdf solvent extraction in hydrometallurgical processing of. Hydrometallurgical production of copper from flotation. 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.

1319 1041 1368 738 82 129 488 1564 403 1308 1561 604 1554 1573 1394 445 1291 979 915 476 1527 1303 188 1180 89 843 119 521 1152 431 150 487 747 847 1402 107 565 167