• LEACHING OF METALS FROM WASTE PRINTED CIRCUIT ,

    013 g/L, 170 g/L, respectively At the same pulp density, nitric acid enabled better leaching of copper and other metals than sulfuric acid with 100 vol% hydrogen peroxide The solid precipitates obtained in the leach liquors of PCBs included stannic oxide and calcium aluminum oxide in nitric acid and gypsum in sulfuric ac

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

    The Democratic Republic of Congo copper oxide ore containing mainly malachite was leached in sulphuric ac The effects of leaching time, pH, stirring speed, and temperature on the dissolution .

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  • Acid Leaching Sulphuric - euphoria-serviceeu

    Sulfuric Acid Leaching of Smelter Matte Sulfuric acid leaching of lead smelter mattes resulted in the recovery of about 45 pct of the nickel and cobalt and 10 to 45 pct of the copper The addition of manganese dioxide increased the cobalt and nickel recovery from 45 pct to ,

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  • Copper Mining and Extraction: Oxide Ores

    The smelter for sulfide ores produces sulfur dioxide gas This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide or Scrubbing sulfur dioxide also protects the environment A by-product of the smelting and converting furnaces is sulfuric ac

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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, tin and lead

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  • Sulphuric acid leaching of zinc and copper from Nigerian ,

    The leaching of zinc and copper from Nigerian bulk sulphide ore with sulphuric acid in the presence of hydrogen peroxide was studied The aim of the study was to investigate the effectiveness of hydrogen peroxide as an oxidant for the sulphuric acid leaching of zinc and copper from a ,

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  • Open Access The Leaching of Dolomitic-Copper Ore Using ,

    The Leaching of Dolomitic-Copper Ore Using Sulphuric Acid Under Controlled Conditions Felix W Ntengwe* Copperbelt University, School of Technology, Chemical Engineering Department, 4662 Jambo Drive, Riverside, Kitwe, Zambia Abstract: The leaching of dolomitic-copper ore using sulphuric acid under controlled conditions was studied with a

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  • Heap leaching - Wikipedia

    This method is an acid heap leaching method like that of the copper method in that it utilises sulfuric acid instead of cyanide solution to dissolve the target minerals from crushed ore The amount of sulfuric acid required is much higher than for copper ores, as high as 1,000 kg of acid per tonne of ore, but 500 kg is more common

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

    The Democratic Republic of Congo copper oxide ore containing mainly malachite was leached in sulphuric ac The effects of leaching time, pH, stirring speed, and temperature on the dissolution .

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  • Leaching | technology | Britannica

    In metallurgy: Leaching Oxides are leached with a sulfuric acid or sodium carbonate solvent, while sulfates can be leached with water or sulfuric ac Ammonium hydroxide is used for native ores, carbonates, and sulfides, and sodium hydroxide is used for oxid

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  • Copper recovery using leach/solvent extraction ,

    by neutralizing the acid leach liquor or by leaching oxide copper with ammonia, but neither solution was economical a molecule that extracted copper well from typical dump leach liquors (pH ~18) had to be built The reagent LIX 64, containing the ketoxime LIX Copper recovery using leach/solvent extraction/electrowinning technology:

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  • A statistical approach to the experimental design of the ,

    Sulfuric acid leaching did not provide more than 76% copper extraction because the only slightly native copper that was leached (23%) For this reason, the sulfuric acid leach residue still had 030% native copper and 052% total copper

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  • Environmental Impact of Sulfuric Acid Leaching

    Environmental Impact of Sulfuric Acid Leaching The electro-winning system [SX-EW] is a step in the right direction as the mining industry attempts to develop methods that have less of ,

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  • (PDF) Leaching of copper oxide with different acid solutions

    Results of the first leaching experiment with 1 M sulphuric acid revealed that most of the copper that was extracted in total in this experiment (84 %) was dissolved during the first five minutes .

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  • Oxidation Sulfuric Acid Autoclave Leaching of Copper ,

    Mar 13, 2019· Results are provided for sulfuric acid autoclave leaching of OAO SUMZ dust and dust obtained after recovery melting, containing alongside copper and zinc considerable amounts of lead and arsenic The effect of temperature and acid concentration on autoclave leaching indices is studied

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  • Oxidation Sulfuric Acid Autoclave Leaching of Copper ,

    Mar 13, 2019· Results are provided for sulfuric acid autoclave leaching of OAO SUMZ dust and dust obtained after recovery melting, containing alongside copper and zinc considerable amounts of lead and arsenic The effect of temperature and acid concentration on autoclave leaching indices is studied

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  • Leaching | technology | Britannica

    In metallurgy: Leaching Oxides are leached with a sulfuric acid or sodium carbonate solvent, while sulfates can be leached with water or sulfuric ac Ammonium hydroxide is used for native ores, carbonates, and sulfides, and sodium hydroxide is used for oxid

    [More]
  • copper ore leaching by sulphuric acid - fcpe47fr

    sulfuric acid copper leaching Sulphuric acid leaching of zinc and copper from Nigerian Complex sulphide ore also be catalyzed into hydroxyl radicals, copper ore leaching by sulphuric ac Contact Supplier Acid leaching of a copper ore by sulphur-oxidizing

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  • The leaching of sulfide iron (II) with sulfuric acid ,

    Aug 25, 2015· The leaching of iron (II) sulfate concentrate from Chaabet El Hamra, Algeria bulk sulphide ore with sphalerite concentrate in presence of sulfuric acid and hydrogen peroxide at low stirring rates (100 rpm) The influence of leaching temperature, leaching time, particle size and sulfuric acid concentration were studied

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  • Sulfuric Acid Copper Leaching - osteriadellortolanoit

    Leaching Oxide Ores with Sulfuric Acid The flowchart above shows how the smelting process of sulfide ores produces sulphur dioxide, which is converted to sulfuric ac

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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, tin and lead

    [More]
  • Effect of Pretreatment on Leaching Primary Copper Sulfide ,

    chloride, seawater and sulfuric ac The calcium chloride and sulfuric acid produce calcium sulfate, which improves the permeability of the heap and provides the chloride medium that is beneficial to leaching copper sulfides [8,12] Several studies have involved pretreatment and subsequent leaching to improve mineral reaction rat

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  • Sulfuric acid leaching of sulfide slag of Sarcheshmeh ,

    leaching causes an increase in extraction of copper In recent years, various solvents such as chlorate [13], ferric chloride [14], hydrochloric acid [15], hydrogen peroxide [16], and sulfuric acid [17] have been used for leaching of copper from slags Sulfuric acid leaching is the most conventional method for extraction of copper because of its

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  • Reacting copper(II) oxide with sulfuric acid- Learn Chemistry

    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(II) sulfate pentahydrate crystals can be obtained

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