copper ore leaching by sulphuric acid

  • Sulphuric acid leaching of zinc and copper from Nigerian

    Sulphuric acid leaching of zinc and copper from Nigerian Complex Sulphide Ore in the presence of hydrogen peroxide by P.A. Olubambi † J.O. Borode† and S. Ndlovu Synopsis The leaching of zinc and copper from Nigerian bulk sulphide ore with sulphuric acid in the presence of

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  • Producing Copper Nature s Way Bioleaching

    Bioleaching is used today in commercial operations to process ores of copper nickel cobalt zinc and uranium whereas biooxidation is used in gold processing and coal desulfurization. Bioleaching involves the use of microorganisms to catalyze the oxidation of iron sulfides to create ferric sulfate and sulfuric acid.

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  • 12.3 Primary Copper Smelting

    copper sulfate (Cu2SO4) and sulfuric acid (H2SO4). The copper anode is dissolved and deposited at the cathode. As the copper anode dissolves metallic impurities precipitate and form a sludge. copper sulfate (Cu2SO4) and sulfuric acid (H2SO4). The copper anode is dissolved and deposited at the cathode. As the copper anode dissolves metallic impurities precipitate and form a sludge. Cathode copper 99.95 to 99.96 percent pure is then cast into bars ingots or Service Online
  • Copper Ore Hydrometallurgy and Pressure Leaching-Copper-

    Pressure leaching is specially targeting at treating complex raw ore reducing its environment impact producing elemental S instead of sulfuric acid and adapting to various natural environment condition. Specially it is possible to extract copper from low grade oxidized ores or complex ores. Process Description. At the stage of the leaching

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  • Reacting copper(II) oxide with sulfuric acid Resource

    In this experiment an insoluble metal oxide is reacted with a dilute acid to form a soluble salt. Copper(II) oxide a black solid and colourless dilute sulfuric acid react to produce copper(II) sulfate giving a characteristic blue colour to the solution. From this solution blue copper

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  • Uranium processingLeaching Britannica

    Acid leaching is commonly performed by agitating an ore-leach mixture for 4 to as long as 48 hours at ambient temperature. Except in special circumstances sulfuric acid is the leachant used it is Acid leaching is commonly performed by agitating an ore-leach mixture for 4 to as long as 48 hours at ambient temperature. Except in special circumstances sulfuric acid is the leachant used it is supplied in amounts sufficient to obtain a final leach liquor at about pH 1.5. Sulfuric acid leaching circuits commonly employ either Service Online
  • The Alteration Mechanism of Copper-bearing Biotite and

    Oct 21 2019 · The order of factors effecting the copper leaching rate of the ores in acid leaching experiments was temperature > sample size > H 2 SO 4 concentration > leaching time

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  • Sulfuric acid injection in copper heap leaching LEWA

    The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap where it dissolves the copper from the ore. The The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap where it dissolves the copper from the ore. The resulting solution of sulfuric acid and copper sulfate is collected in a small pool. Copper concentration is around 65 . Next step is solvent extraction. Service Online
  • Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous

    ores. In 2002 the average copper ore grade was 1.13 while in 2011 it was 0.84 3 . Many chalcopyrite leaching studies have been performed with leachants such as ferric sulfate 4–7 ores. In 2002 the average copper ore grade was 1.13 while in 2011 it was 0.84 3 . Many chalcopyrite leaching studies have been performed with leachants such as ferric sulfate 4–7 ferric chloride 7 8 sodium nitrate-sulfuric acid 9 hydrochloric acid 10 and sodium chloride-sulfuric acid 11 among others 10 . Service Online
  • Improvements in Copper heap leaching by use of wetting

    Improvements in Copper heap leaching by use of wetting agents Proceedings of EMC 2009 3 A sprinkler system is installed on top of each heap allowing the diluted sulfuric acid to be fed uni-formly over the ore. While the solution percolates through the heap copper is leached out of the ore.

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  • Leaching of Copper from Cuprous Oxide in Aerated Sulfuric

    Leaching of Copper from Cuprous Oxide in Aerated Sulfuric Acid Ilhwan Park1 Kyoungkeun Yoo1 Richard Diaz 3Alorro2 Min-seuk Kim3 and Soo-kyung Kim 1Department of Energy Resources

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  • Acid LeachingCopper Ore Treatment Method

    The flowsheet discussed in this study is for treatment of 100 tons per day oxide-sulfide copper ore by the leaching process using sulfuric acid-ferric sulfate solvent. This flowsheet would also be suitable for a larger tonnage by proper sizing of the various units of equipment.

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  • Acid leaching industrial process Britannica

    Other articles where Acid leaching is discussed uranium processing Leaching Acid leaching is commonly performed by agitating an ore-leach mixture for 4 to as long as 48 hours at ambient temperature. Except in special circumstances sulfuric acid is the leachant used it is supplied in amounts sufficient to obtain a final leach liquor at about

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  • Producing Copper Nature s Way Bioleaching

    The support rock itself may be a low-grade copper ore. The ratio of support rock to concentrate is in the range of 5 1 to 10 1 by weight. The heap is inoculated with thermophilic bacteria and a process leach solution consisting of sulfuric acid ferric iron and nutrients is applied to the heap.

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  • What ores of pure metal use sulfuric acid in the process

    Apr 24 2017 · To start "ore of pure metal" is a bit contradictory. Ore as a term implies that the substance is a metal-containing compound which is why ores need to be either thermally or chemically To start "ore of pure metal" is a bit contradictory. Ore as a term implies that the substance is a metal-containing compound which is why ores need to be either thermally or chemically (or both) processed in order to extract the metal. For examp Service Online
  • ExtractionEuropean Copper Institute

    Leaching offers an alternative to copper mining. First the ore is treated with dilute sulphuric acid. This trickles slowly down through the ore over a period of months dissolving copper to form a weak Leaching offers an alternative to copper mining. First the ore is treated with dilute sulphuric acid. This trickles slowly down through the ore over a period of months dissolving copper to form a weak solution of copper sulphate. The copper is then recovered by electrolysis. This process is known as SX-EW (solvent extraction/electrowinning). Service Online
  • ALTA MetBytesCopper Heap Leach DevelopmentNot as

    • For oxide ore use a hot sulphuric acid soluble procedure. The cold acid soluble method has been proven to be unreliable and often understates the leachable copper assay. • For secondary sulphide ore use a sequential procedure of hot acid

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  • Extraction of Tin and Copper by Acid Leaching of PCBs

    Rate of solder dissolution with time for different acid concentrations was studied. Sulfuric acid was found unable to leach the solder at low concentrations so further study was discarded. Perchloric acid was also found ineffective. Nitric acid a strong oxidizing agent has selective dissolution properties for copper

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  • Leaching of copper(I) sulphide by sulphuric acid solution

    The influence of NaNO 3 concentration on the copper leaching degree was determined in a NaNO 3 concentration range from 0.15 to 0.60 mol dm −3 and a time frame from 3 to 30 min. The other experimental conditions were constant (80 °C 1.0 mol dm −3 H 2 SO 4 stirring speed 300 min −1 and phase ratio 20 g Cu 2 S/1.2 dm 3).The effect of changing the initial concentration of NaNO 3 is shown

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  • LEACHING OF LOW-GRADE COPPER ORES A CASE STUDY

    Oxide copper ore mixed oxide-sulphide ores and low-grade copper sulphide ore which for economic reasons cannot be enriched by flotation may be processed by leaching methods. Agents for leaching copper can be acid base or salt solutions. Of all of these agents sulphuric acid has been given the

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  • A-Z of Copper Ore LeachingALTA Metallurgical Services

    NATIVE COPPER LEACHABLE WITH SULPHURIC ACID/FERRIC SULPHATE SOLUTIONS CHALCOPYRITE VERY SLOW LEACHING A-Z of Copper Ore Leaching 5 LEACHABILITY OF COPPER MINERALS • Leachability in sulphuric acid solutions varies enormously (see Table 1). Orebodies frequently contain a mix of minerals commonly varying with depth.

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  • Bioleaching Introduction Methods Application Copper

    Ferric sulphate and sulfuric acid can be produced by T.ferrooxidans from the pyrite within the uranium ore. 2FeS 2 H 2 O 7.5 O 2 → Fe 2 (SO 4 ) 3 H 2 SO 4 For the initial production of the Fe 3 leach solution the pyrite reaction is used.

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  • Leaching of copper oxide with different acid solutions

    Leaching processes of metallic copper or ores containing copper in the divalent state have been the subject of many research works in recent years . However no study was found concerning the dissolution kinetics of CuO/Al 2 O 3 catalyst in inorganic or organic acid solutions.

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  • LEACHING OF A C u-C oORE FROM CONGO USING

    4.2 Leaching The leaching of the ores was conducted at different solution compositions (of sulphuric acid and hydrogen peroxide) temperatures and particle size fractions. Fig. 5 shows typical leaching characteristics (53-75 microns 0.732 M sulphuric acid and 0.025 M hydrogen peroxide) of different metal values existing in the ore. Only copper and

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  • Valves for copper leaching solvent extraction and

    Heap leaching starts with the sprinkling of a low concentration sulfuric acid and water solution on a stockpile (leach pad) of low-grade ore. The liquid percolates through the stockpile and dissolves copper minerals producing an approx. 60 copper concentration called pregnant leach solution (PLS).

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  • sulfuric acid copper leachingYouTube

    Sep 02 2016 · More information about leach manganese with sulfuric acid. 7 Jul 2013 which can be used for leaching Mn from all types of ores. how does sulfuric acid recovery of copper

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  • LEACHING OF LOW-GRADE COPPER ORES A CASE STUDY

    Oxide copper ore mixed oxide-sulphide ores and low-grade copper sulphide ore which for economic reasons cannot be enriched by flotation may be processed by leaching methods. Agents for leaching copper can be acid base or salt solutions. Of all of these agents sulphuric acid has been given the

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  • sulfuric acid copper leachingYouTube

    Sep 02 2016 · More information about leach manganese with sulfuric acid. 7 Jul 2013 which can be used for leaching Mn from all types of ores. how does sulfuric acid recovery of copper

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  • Acid leaching of oxide–sulfide copper ore prior the

    leaching from low grade copper oxide ore by sulphuric acid and they have obtained leaching percent of cop-per over 90 . Compared with the copper leaching effi-ciency of about 35 in the mill running technology the leaching process has achieved a better economic result. In the present study the leaching of oxide-sulfide copper ore was

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  • LEACHING KINETICS OF COPPER FROM CHALCOPYRITE

    Sulfuric acid processing with the addition of a small amount of nitrogen species has been employed for a long time in some industrial applications. The first patented commercial process by Sunshine Precious Metals (Idaho USA) used a sulfuric and dilute nitric acid mixture to leach silver- and copper-bearing ores

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  • A STUDY OF LEACHING OF COPPER OXIDE ORE BY SULPHURIC ACID

    The leaching of dolomitic-copper ore using sulphuric acid under controlled conditions was studied with a view to evaluating the economic value and the effect of ore pulverisation particle size

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  • A-Z of Copper Ore LeachingALTA Metallurgical Services

    leachable with sulphuric acid/ferric sulphate solutions. kinetics suitable for dump or heap leaching. kinetics improve with increased temperature cuprite native copper leachable with sulphuric acid/ferric sulphate solutions chalcopyrite very slow leaching a-z of copper ore leaching 5 leachability of copper

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  • ALTA MetBytesCopper Heap Leach DevelopmentNot as

    • For oxide ore use a hot sulphuric acid soluble procedure. The cold acid soluble method has been proven to be unreliable and often understates the leachable copper assay. • For secondary sulphide ore use a sequential procedure of hot acid soluble followed

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  • Investigation on leaching of malachite by citric acid

    Leaching of an oxidized copper ore containing malachite as a new approach was investigated by an organic reagent citric acid. Sulfuric acid is the most common reagent in the leaching of oxide Leaching of an oxidized copper ore containing malachite as a new approach was investigated by an organic reagent citric acid. Sulfuric acid is the most common reagent in the leaching of oxide copper ores but it has several side effects such as severe adverse impact on the environment. Service Online
  • Copper Ore Types Sulfides vs. Oxides An Investor s

    As with oxide ores SX-EW tech is used to recover copper from a pregnant leach solution. Secondary sulfides which are formed by supergene secondary enrichment are resistant to sulfuric leaching

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  • Copper Mining and Processing Processing of Copper Ores

    The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap where it dissolves the copper from the ore. The resulting "pregnant" leach solution of sulfuric acid and copper sulfate is collected in a small pool.

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