In the ten years from 2003 to 20 global mine production of copper has increased by over 23% to meet demand while the weighted average head grade has dropped from 0. The leaching process used by the copper mining industry is known as solution. Sulfide ores 1114, but is introduced here because an important byproduct of this process is used for the extraction of oxide ores. Figure 4 shows the stages used in the extraction of copper from this ore. We rely on copper for power, lighting, heating, communications, water supply and transport. Ores containing 4% or more copper are treated by smelting process. Thus lead is also a coproduct of zinc, copper and silver production making the extraction of lead more economic than if it occurred in isolation.
Large amount of copper are obtained from copper pyrite cufes2 by smelting. Extraction of copper from its ores the w elsh copper process. Options a carbon monoxide b copper i sulphide c sulphure dioxide d iron ii sulphide. In 2000, the principal mining states, in descending order, arizona, utah, new mexico, and montana, accounted for 99 percent of domestic. The paper presents results of extraction of copper ii from ammonia leach solutions. Ores, properties, extraction, purification, uses extraction. Leaching can be defined as the ability of a solvent such as water or sulfuric acid to dissolve precious metals from an ore body.
Very poor ores are treated by hydrometallurgical process. Sulfide ores such as chalcopyrite cufes2 are converted to. Extraction of copper from copper ore teaching resources. Figure 4 copper ore copper metal carbon powdered ore rock carbon dioxide copper carbonate stage 1. Copper was first extracted about 3000 bc in anatolia now turkey by smelting copper ore in fire pits. Extraction of sulfide ores is covered in more detail in copper mining and extraction. The introduction looks at uses and abundance of copper and why we want to extract it.
Copper ore deposits are found on every continent, and it has been mined around the world for more than 10,000 years. 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. Nov 17, 2012 conversion of cuii ion into copper metal via electrolysis. This confirms that the chlorine treated chicken dung leached solution has potential for the extraction of copper from its ores at low cost.
This page looks at the extraction of copper from its ores, its purification by electrolysis, and some of its uses. Copper is infinitely recyclable without losing any of its properties. Extraction of copper by smelting process following steps are involved in the extraction of copper. Lesson one students were shown one set of equipment and a lump of malachite. There is an abundance of water and sulfuric acid that could be used to dissolve leach the copper compounds found in the ore if this is possible. Preliminary extraction of the copper with sulphuric or sulphurous acids may be applicable to ores containing oxidized copper minerals such as malachite, azurite and chrysocolla but these acids have but little effect on sulphide copper. Pdf growing role of solvent extraction in copper ores. Materion maintains a beryl extraction plant at its delta, utah facility and processes beryl to provide a portion of the requirements for beryllium. During the extraction of aluminium from its ores the ore is. Copper extraction by wet chemical method sciencedirect.
This is a pdf file of an unedited manuscript that has been accepted for. This means it is not consumed and can be used and reused. Extraction of copper from its ores the w elsh copper process from metals byc. Extracting copper gives an overview of how copper is retrieved from its ores and introduces gives an overview of how copper is retrieved from its ores and introduces electrolysis. In the extraction of copper from its sulphide ore, the metal. The percentage of copper in the actual ore is too low for direct extraction of copper to be viable. Extraction of metals occurrence ores of some metals are very common iron, aluminium others occur only in limited quantities in selected areas ores need to be purified before being reduced to the metal this adds to the expense high grade ores are therefore cheaper to process. The ore obtained from mines are broken down into small piece by jaw crusher and then pulverized. The method used to extract copper from its ores depends on the nature of the ore.
Nuclear fuel cycle extractingg uranium from its ores by d. 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 extraction refers to the methods used to obtain copper from its ores. In one ore, the main compound is copper carbonate cuco 3. Extraction of copper from sulphide ore large amount of copper are obtained from copper pyrite cufes2 by smelting. Go to the download section to access zip files of all resources for each subject and age group for use offline. Extraction of copper from its ore by frein jarane castaneda. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors. Copper processing is a complicated process that begins with mining of the ore less than 1% copper and ends with sheets of 99. Hydrazones are prepared by bubbling chlorine in chicken dung leached solution. Ore concentration the leadrich ore, with a typical concentration range of 38% lead, must first be separated from other material the gangue. Pdf clean and efficient extraction of copper ions and deposition. Copper makes our homes, schools and businesses efficient, comfortable and decorative and it lasts for many years. Pyroprocessing sulfide ores provides acid for leaching.
Copper is a chemical element that has a variety of uses based on its properties of malleability and conductivity. The effect of a type of extractant, its concentration and type of diluent in organic phase on extraction efficiency and ammonia transfer was studied. The second reaction is reversed to produce a more negative. Extraction ores are first mechanically crushed and ground so that nearly all copper mineral particles are freed from the gangue. Growing role of solvent extraction in copper ores processing article pdf available in fizykochemiczne problemy mineralurgii 4242. Extraction of copper mining, concentration, smelting. Overview of mining and its impacts1 proposed mining projects vary according to the type of metals or materials to be extracted from the earth. In this esource, well look at the ways of extracting copper from the ground.
Beneficiation by froth flotation of ore to give copper concentrate. Seidel the development of the uranium mining and ore processing industry is unique. G in kjmol values of 250 and 400 at 500k, respectively. Extraction of copper from copper pyrite reference notes. The principal ore of copper is copper pyrite and copper is extracted from this ore. Most of the copper ores mined today are oxide or sulfide ores. Creating steel from lowgrade iron ore requires a long process of mining, crushing. The ore being sulphide ore is concentrated by froth floatation process. Conversion of cuii ion into copper metal via electrolysis. In general, the more reactive the metal, the harder it is to extract it from its ore. Apr 06, 2012 2 powerpoints to cover 2 lessons on the extraction of copper from copper carbonate for high ability year 9. Pdf copper extraction by wet chemical method researchgate. In consideration of ore types, a generalized diagram showing the applicable ore beneficiation technologies for oxide and sulphide ores versus ore grade is given in figure 2. Copper recovery using leachsolvent extractionelectrowinning.
Faqs with regards to operating a cu er tankhouse above 400 am2 pdf. Go to the download section to access zip files of all resources for each subject. The method used to extract copper from its ores depends on the nature of. Ore, for example, is an aggregate containing precious or useful metal along with other minerals that must be separated out before the metal can be used. In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with. How this is done, and how much it costs, depends upon the metals reactivity see reactivity properties. The ore was smelted with charcoal to produce impure copper. The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different. Where does copper come from introduces ores and shows the different copper ores. The majority of proposed mining projects involve the extraction of ore deposits such as copper, nickel, cobalt, gold, silver, lead, zinc, molybdenum, and platinum. To this are added, collectors and froth stabilizers. Extraction of copper pdf free download as pdf file.
What is the second step in the extraction process of copper. The concentration of ore is required and it is done by the froth flotation method. Copper is extracted from its ore by two principal methods. 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. Iron ore processing for the blast furnace courtesy of the national steel pellet company the following describes operations at the national steel pellet company, an iron ore mining and processing facility located on the mesabi iron range of minnesota. They had 20 questions yesno answers as a class to work out the method of extraction and risk assess it. It was found that the reduced zero valent copper was 6085% pure. Nuclear fuel cycle extractingg uranium from its ores. Bloxam sometime pofesor of chemistry at kings college, london. The resulting product was then applied to reduce copper in a solution leached from its ore. Beryl ore was essentially the only source of beryllium until 1969 when materion natural resources began commercial extraction from bertrandite. What links here related changes upload file special pages permanent link page information wikidata item cite this page. Mining and extraction oxide ores processes for extracting copper. What is the second step in the extraction process of copper from its ore.
Pdf in many countries, there occur large deposits of copper with no. The conversion of copper consists of a series of physical and electrochemical processes. On industrial scale copper is extracted from its sulphide ore known as copper pyrite cufes 2 by smelting method. After enrichment steps, the copper concentrates are usually treated by pyrometallurgical methods. Before you get too bogged down in the extraction of copper, make sure that you need it for whatever syllabus you are using. An ore has to be changed chemically into the metal. Copper production about 80 % of primary copper production comes from lowgrade or poor sulfide ores. There are many steps in the extraction of copper, which are given below. Flotation by the injection of air and violent agitation is carried out with the pulverized ore held in suspension in water, to which surfaceactive agents have been added. However this is not the same as the percentage of copper in the ore as that also. It is a necessary component for many products in the modern world. It also explores the mining of sulphide ores and the subsequent extraction of copper. The ore is crushed into a fine powder and a suspension is created in water. Generally, copper extraction follows the sequence see figure below.
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