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Ultimately more copper can be extracted from sulfide ore deposits. Pyrometallurgy. Uses physical steps and high temperatures to extract and purify copper from copper sulfide ores, usually in four steps: Froth flotation. Thickening. Smelting. Electrolysis. Hot slag pours from smelter of Inspiration Consolidated Copper Company" by .
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The sulfide concentrates are typically smelted in such furnaces as the Outokumpu or Inco flash furnace or the ISASMELT furnace to produce matte, which must be converted and refined to produce anode copper. Finally, the final refining process is electrolysis. For economic and environmental reasons, many of the byproducts of extraction are reclaimed.
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Copper can be extracted from its sulphide ore by simply heating it in the air. This occurs in the following manner. A copper glance, CuS, is actually copper (I) sulphide, and is one among the ores from which copper metal is produced. The following two steps are involved in extracting copper from copper glance ore.
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ZIMSEC O Level Combined Science Notes:Extraction of copper from sulphides. For example copper ores found on the Great Dyke near Mhangura is of the sulphide type. The powder is mixed with water and the slurry (porridge) is agitated by passing air through it. The front on the surface is skimmed off, filtered and then dried.
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Synchronous extraction of nickel and copper from a mixed oxide-sulfide nickel ore in a low-temperature roasting system. Journal of cleaner production 177, 371-377 (2018). CAS Article Google ...
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Is it expensive to extract copper? Copper is found in the Earth's crust as an ore containing copper sulfide. ... Copper would be too expensive to extract from this contaminated land using the traditional method of quarrying and then heating in a furnace. (a) The percentage of copper ore in the contaminated land is low.
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In the 3rd stage of extraction, copper (I) sulphide is reduced to copper metal upon reaction with oxygen air: (3) C u X 2 S + O X 2 2 C u + S O X 2 In either process, it wasn't explain the so-called formation of C u X 2 O and its conversion back to C u X 2 S, not even through other processes (Ref.2).
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Low-temperature roasting, selective decomposition and water-leaching were used to extract nickel and copper from low-grade nickel sulfide ore with highly alkaline gangue. The effects of variable factors, such as the dosage of roasting additives, the ore particle size, roasting time and roasting temperature, selective decomposition temperature and leaching temperature on the conversion of ...
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Most current copper extraction processes burn sulfide minerals in air, which produces sulfur dioxide, a harmful air pollutant that has to be captured and reprocessed, but the new method produces elemental sulfur, which can be safely reused, for example, in fertilizers.
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Score: 5/5 (49 votes) . A ferric sulphate leach step to extract copper from chalcocite (Cu 2 S) in the sulphide ore or concentrate. This leach enables use of simple atmospheric reactors, gives good copper extraction, and allows regeneration of the leachate using bacteria or pressure oxidation of the liquor.
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(A) Auto reduction of ore is used for the extraction of copper (R ) The sulphide ore of copper reacts with its oxide to the give the metal asked Feb 19, 2020 in Chemistry by AmritKaushik ( 23.7k points)
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Copper can be extracted from non-sulfide 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. Concentration of the copper (II) sulfate solution by solvent extraction.
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A smelting workaround. The traditional route for extracting copper from sulfide ores is smelting. Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those ore bodies containing problematic elements like arsenic, which make smelting less economical. Smelting is increasingly expensive because, in ...
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Metal from Concentrated Ore. Roasting: After the Froth Floatation method, the next step in the extraction of zinc is roasting.Roasting is the process of heating a sulfide ore to a very high temperature in the presence of air. This process is generally applied to sulfide minerals.
Get price2014613About 80 of all copper extracted comes from sulphide ores. A typical ore contains only 0.5 to 2.0 copper. It is a measure of the value of copper that it is worth extracting it from such small concentrations. The ore is a mixture of minerals and rock called gangue. The most common copper
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Smelting and Extraction. Sulfide Ore. The dried copper concentrates are sent to the smelting operation where it is reduced and melted in several operations. At the end of this smelting process the copper is about 99% pure.. Oxide Ore. The copper-bearing solution is collected and pumped to the extraction plant where it is purified.
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Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the ...
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Extraction of copper from sufidic ores, either by pyrometallurgy or hydrometallurgy, has various limitations. In this study, a solvometallurgical process for the extraction of copper from sulfidic ore minerals (chalcopyrite, bornite, chalcocite and digenite) was developed by using an organic lixiviant (FeCl 3 as oxidizing agent and ethylene glycol (EG) as organic solvent).
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Answer (1 of 3): Oxidation and reduction in two stages — simplified reactions below in quotes, but in normal practice, many copper ores also contain iron as CuFeS that need to be reduced.. An excellent discussion of the entire process from mining though ore processing to final refining here * ...
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1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite.
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The Sulphide ore of copperis Copper Glance. First step is the enrichment of the ore and the removal of GangueImpurities of sand and rocks The second step is the extraction of the ore which can be done by simple heating in presence of air. Given Below Are The Steps For Extraction Of Copper
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The principal ore of zinc is zinc blende. Extraction: Zinc can be extracted from zinc blende by the following steps: 1) Concentration: The ore is concentrated by froth floatation process. 2) Roasting: Concentrated ore is roasted in the presence of excess of air at about 1200 K to convert zinc sulphide into zinc oxide. 2ZnS + 3O 2 ——> 2ZnO ...
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In the extraction of copper from its sulphide ore, when ore is subjected to roasting, some of it is oxidised to C u 2 O which reacts with the remaining C u 2 S (sulphide ore) to give copper metal. C u 2 S + 2 C u 2 O → 6 C u + S O 2 ↑ Here C u 2 S behaves as reducing agent.
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These minerals are called ores. Extraction of Metals. ... For example, gold, silver, platinum and copper are found in the free state. Copper and silver are also found in the combined state as their sulphide or oxide ores. ... Therefore, prior to reduction, the metal sulfides and carbonates must be converted into metal oxides. The sulfide ores ...
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Extracting copper from its ores. The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ( CuFeS2 ) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper.
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Additionally, for gold and copper extractions, bioleaching is used to extract cobalt, zinc, nickel, and uranium from low-grade ores and industrial effluents. In this review, the fundamental process of bioleaching from low-grade metal sulfide ores are discussed with emphasis on mechanism, types, pathways, techniques, and bioleaching development.
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Copper processing is a complex process that involves many steps as the manufacturer processes the ore from its raw, mined state into a purified form for use in many industries. Copper is typically extracted from oxide and sulfide ores that contain between 0.5 and 2.0% copper.
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The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite (CuFeS2) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper. ... Copper is found in the ...
Get pricethan carbon, it can be extracted from its compounds by heating with carbon. Copper is an example of this. Copper mostly occurs as sulfide ores, which are heated in air to convert them to copper(II ...
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Extracting Copper. Q6. Copper is a widely used metal. The main ore of copper contains copper sulfide. Copper can be extracted from copper sulfide in a three stage process. (a) In the first stage of extraction the copper sulfide is heated in air. (i) Balance the symbol equation for the reaction. Cu 2 S + . 2 → .2CuO + SO 2 (1)
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Another example is the treatment of ores containing copper sulfide (chalcocite) and copper iron sulfide (chalcopyrite), together with molybdenum disulfide (molybdenite). The usual practice is to float both copper and molybdenum minerals in the first stage, leaving iron sulfides and other gangue minerals behind.
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If sulfide minerals are present in these rocks, especially pyrite, the sulfides can oxidize and cause acid rock drainage. Acid seepage from tailings. Tailings produced from the milling of sulfide ores — primarily copper, lead, and zinc ores — may have concentrations of pyrite that are greater than those common in waste rock.
Get priceCopper is predominantly recovered from sulfide ores by pyrometallurgy - an energy intensive process requiring capture and treatment of released SO 2. Whilst some copper ores are amenable to hydrometallurgy, chalcopyrite, the main copper mineral, is challenging to process in aqueous solutions due to surface passivation.
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Copper can be extracted from non-sulfide 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. Concentration of the copper (II) sulfate solution by solvent extraction.
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In bacterial extraction of copper from low‐grade copper sulfide ores, at least three contributions are made by Thiobacillus ferrooxidans. They are: (1) enzymatic oxidation and consequent solubilization of insoluble sulfides; (2) regeneration of ferric lixiviant for chemical oxidation and solubilization of insoluble sulfides; and (3) partial fixation of externally introduced iron in the ore.
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Sulfide ores, and pyrites in particular, have caused and continue to cause difficulty in recovering the gold values from these ores. In most instances, visible gold can not be seen under microscopic examination of pyrite gold ores. However, if the ore is ground to -200 mesh, most times, a few specs of gold can be visibly seen under microscopic ...
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aqa gcse chemistry unit 1 - extraction of copper from low grade ores
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How do you extract copper? Copper can be extracted from its ore by: Underground: sinking a vertical shaft into the Earth to an appropriate depth and driving horizontal tunnels into the ore.Open pit: 90% of ore is mined by this method. Ores near the surface can be quarried after removal of the surface layers.
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Metalcess provides copper ore leaching, PLS solvent extraction and copper electro-winning.Specially treating copper sulfide ore by pressure leaching to get elemental S instead of H2SO4 acid. Copper Anode Slime Recovery
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Copper from Cu2S can be obtained from its ore simply by heating in air. (I) First step is the heating of sulphide ore of copper in the presence of an excess of air. This process is known as roasting. (II) The second step is the self-reduction of copper. How does copper mining affect the environment?
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