The mond process marked an entirely new departure in metallurgical practice and in the principles which had hitherto guided it. The ore samples were pulverized to 250 micro millimetres and leached. This is a pdf file of an unedited manuscript that has been accepted for publication. Extraction of copper by smelting process following steps are involved in the extraction of copper. Pdf copper extraction by wet chemical method researchgate. To this are added, collectors and froth stabilizers. Faqs with regards to operating a cu er tankhouse above 400 am2 pdf. Extraction of copper pdf free download as pdf file. The conversion of copper consists of a series of physical and electrochemical processes. Accordingly twentyfiv grame s of ore wer e well mixed with an equal quantit sodiuy of peroxidm e and the mixture transferred to a fire cla crucibley ignitio. Copper processing is a complicated process that begins with mining of the ore less than 1% copper and ends with sheets of 99.
Underground mining is achieved by sinking shafts to the appropriate levels and then driving horizontal tunnels, called adits, to reach the ore. Comparing the extent of the dissolution of coppercobalt ores. When is water used in the extraction of copper from its ore. It is a measure of the value of copper that it is worth extracting it from such small concentrations. Generally, copper extraction follows the sequence see figure below. The paper presents results of extraction of copper ii from ammonia leach solutions. In the rst experiment the oxidized copper ore was sulfurized under autoclave conditions. This page looks at the extraction of copper from its ores, its purification by electrolysis, and some of its uses. Nov 17, 2012 conversion of cuii ion into copper metal via electrolysis. To analyse how copper is obtained from oxidised copper ore using the processes of leaching, solid.
Further, through the use of biooxidation, it is now possible to leach many of the copper sulfide minerals present in the ore. Extraction of copper from oxidised copper ore essay example. However this is not the same as the percentage of copper in the ore as that also. Epa530r94031 ntis pb94200979 technical resource document extraction and beneficiation of ores and minerals volume 4 copper august 1994 u. Copper is widely used in electrical cabling, piping, and the construction industry. The concentration of ore is required and it is done by the froth flotation method. The method used to extract copper from its ores depends on the nature of the ore. Copper extraction refers to the methods used to obtain copper from its ores. Go to the download section to access zip files of all resources for each subject and age group for use offline. The ore used in this study originated from the central african. Copper and cobalt are commodities of great economic value. Extraction of copper and zinc from their oxides learnnext. Oct 14, 2019 in this lab, students extract copper from copper carbonate using two different methods, and then determine which industrial method is most effective. An investigation was carried out to study the dissolution of cobalt and copper from a cu co oxidized ore using organic acids.
Environmental protection agency office of solid waste special waste branch 401m street, sw washington, dc 20460. Class12 cbse board extraction of copper and zinc from their oxides learnnext offers animated video lessons with neatly explained examples, study material, free. At the time of its discovery nickel was thought to be useless but as its valuable properties came to light the demand for the metal increased. Extraction of copper from sulphide ore large amount of copper are obtained from copper pyrite cufes2 by smelting. Pdf growing role of solvent extraction in copper ores. Conversion of cuii ion into copper metal via electrolysis. What is the second step in the extraction process of copper.
Underground mining is, however, relatively expensive and is. Copper minerals and ores are found in both igneous and sedimentary rocks. The electrolyte is copper sulphate cuso4 mixed with a little amount of h2so4 to increase the electrical conductivity. The ore is fed to a crusher where it is broken down to a specified maximum size and passed through to a conveyor. The method used to extract copper from its ores depends on the nature of. What links here related changes upload file special pages permanent link page information wikidata item cite this page. Pdf extraction of copper and cobalt from oxidized ore using. This means it is not consumed and can be used and reused. Extraction of copper from copper ore teaching resources. While chalcopyrite remains refractory to ambient temperature bioleaching, other copper sulfide minerals the secondary sulfide minerals such as chalcocite, covellite, bornite, etc. Copper extraction by wet chemical method sciencedirect. Apr 06, 2012 2 powerpoints to cover 2 lessons on the extraction of copper from copper carbonate for high ability year 9. Options a carbon monoxide b copper i sulphide c sulphure dioxide d iron ii sulphide. What is the second step in the extraction process of copper from its ore.
The cathode plates are coated with graphite in order to remove depositing copper. The metal completely dissolves out of copper concentrate or slag in the aerobic eutectic molten chloride salt in a graphite or glassy carbon pot, which serves as. Extraction of copper mining, concentration, smelting. These are dipped into an electrolyte of copper ii sulphate solution. The ore is crushed into a fine powder and a suspension is created in water. Hence, he named this new element after the traditional mineral. Extraction of one tonne of copper from ore with a grade of 1 percent. Aug 21, 2009 this video showcases the importance of copper in our society. Copper derives its value from its outstanding properties which include high electrical and thermal conductivity, malleability, and toughness. Introduction the opemiska mine property is in levy township in chibougamau area of quebec and is comprised of 487 acres of patented claims contiguous with 2,215 acres held under development license. The effect of a type of extractant, its concentration and type of diluent in organic phase on extraction efficiency and ammonia transfer was studied. Ores containing 4% or more copper are treated by smelting process. G in kjmol values of 250 and 400 at 500k, respectively.
Copper production about 80 % of primary copper production comes from lowgrade or poor sulfide ores. Pdf extraction of copper and cobalt from oxidized ore. Copper is extracted from its ore by two principal methods. About 80% of all copper extracted comes from sulphide ores. It walks the viewer, stepbystep, through the entire refining process.
Hydrazones are prepared by bubbling chlorine in chicken dung leached solution. Purification of copper by electrolysis extraction from ore above the impure copper from a smelter is cast into a block to form the positive anode. Cobalt owes its value to the fact that it can maintain its. After enrichment steps, the copper concentrates are usually treated by pyrometallurgical methods. The second reaction is reversed to produce a more negative. Classroom resources extracting copper from ore aact. Chalcopyrite also known as copper pyrites and similar sulfide ores are the commonest ores of.
Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors. The percentage of copper in the actual ore is too low for direct extraction of copper to be viable. Energy consumption, emissions, wastes and byproducts from the production of 1 tonne of copper from secondary materialsa, germany 1992. Beneficiation by froth flotation of ore to give copper concentrate. Just like in blast furnaces, calcium carbonate is added as a flux to create the slag. Extraction of copper from oxidised copper ore essay sample. Ayres et al the life cycle of copper, its coproducts and byproducts vi table 5. Copper recovery using leachsolvent extractionelectrowinning.
The copper mine in picture 4 produces 6 tonnes of copper from every tonnes of ore. Mining of copper ores is carried out using one of two methods. Very poor ores are treated by hydrometallurgical process. The life cycle of copper, its coproducts and byproducts. Class12 cbse board extraction of copper and zinc from their oxides learnnext offers animated video lessons with neatly explained examples, study material, free ncert solutions, exercises and tests. The knowledge of how to extract metals from their ores has played an incredibly important role in every known civilisation. Before you get too bogged down in the extraction of copper, make sure that you need it for whatever syllabus you are using. 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. Sulphide ores such as chalcopyrite are converted to copper by a different method from silicate, carbonate or sulphate ores. Pdf clean and efficient extraction of copper ions and deposition. Apparently in the extraction of copper from its ore, water is used at least 3 times. On industrial scale copper is extracted from its sulphide ore known as copper pyrite cufes 2 by smelting method. Swedish scientist baron axel frederich cronstedt in 1751 finally isolated nickel from an ore closely resembling kupfernickel.
The extraction of nickel from its ores by the mond process 1. Blocks of blister copper are used as anodes and thin sheets of pure copper act as cathodes. In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with. Go to the download section to access zip files of all resources for each subject. Extraction of copper from its ore by frein jarane castaneda. Lesson one students were shown one set of equipment and a lump of malachite.
The revovery of copper and cobalt from oxidized copper ore. In the following experiments, the mixture of oxidized copper ore and converter. Copper is infinitely recyclable without losing any of its properties. I know that it is used in froth flotation, but when else is it used. Copper smelting means that the concentrated ore is heated strongly with silicon dioxide silica, calcium carbonate caco 3 and air in a furnace. To analyse how copper is obtained from oxidised copper ore using the processes of leaching, solidliquid separation, displacing and electrowinning. The ore is a mixture of minerals and rock called gangue. Growing role of solvent extraction in copper ores processing article pdf available in fizykochemiczne problemy mineralurgii 4242.
The townsite of chapais which serves the mine community is complete with all the necessary services including. The extraction of nickel from its ores by the mond process. It depended on the remarkable property possessed by nickel of. 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 ore contains some copper mineral and lot of waste rock. Copper recovery using leachsolvent extractionelectrowinning technology 65 figure 2 and a catalytic amount of lix 63, was introduced in 19657 and in march 1968 the first commercial copper lsxew operation, the bluebird plan of ranchers exploration and development corporation, came on line1. In the extraction of copper from its sulphide ore, the metal. Metals extraction of metals in this gcse chemistry quiz, one of a series on metals, we look at the extraction of metals such as copper from both high grade and low grade ores.
This video showcases the importance of copper in our society. By the end of this lesson, students should be able to. They had 20 questions yesno answers as a class to work out the method of extraction and risk assess it. Copper in chalcopyrite is reduced to copper sulfide. In this esource, well look at the ways of extracting copper from the ground. Even from the data of experiment 1 shown in table 2, it can be seen that sulfurization compared with direct roasting causes about a 10% increase. This video was developed for rio tinto and has won multiple. Aerial view of the opemiska copper mines quebec ltd. The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different.
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