copper extraction from sulphide ores by chloride
COPPER HYDROMETALLURGY AND EXTRACTION FROM
By using chloride solutions, copper extraction with hydroxyoximes is easier to accomplish. It takes place at a lower pH and is more pronounced than from sulphate media. In chloride systems, extraction isotherms are steeper than in sulphate systems and even at pH 1 a relatively high loading of the LIX 64N solution in kerosene can be obtained.
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Hydrometallurgical method of extraction of copper from ...
Copper content in sulphide-containing materials such as ores or concentrates is extracted by leaching the material by means of a leaching solution containing iron (III) chloride and copper (II) chloride, the leaching process being regulated in order to keep the red-ox potential in the leach solution between 430 mV and 460 mV, whereby iron (III) chloride is reduced to iron (II)
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(PDF) Accelerating Copper Leaching from Sulfide Ores in ...
2019-4-25 · Copper extraction rates was higher in the column with 20 g / L of chloride (C1) than in the column with 40 g / L (C3), which could be due to
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Leaching of Copper Sulphides - SAIMM
2016-6-8 · copper sulphide leaching options as alternatives to the more conventional pyrometallurgical processing route of copper sulphides. Three copper sulphide leaching and refining processes are discussed: total pressure oxidation, ferric sulphate leaching and copper chloride leaching. The effect of mineralogy
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Primary copper sulfides bioleaching vs. chloride leaching ...
2017-3-1 · Primary copper sulfides are the most economically relevant due to their abundance. Therefore, several technologies have been developed in order to achieve an efficient copper extraction from these types of copper sulfides. Among these developments, the hydrometallurgical options of bioleaching as well as chemical chloride leaching are ...
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Bioleaching of copper secondary sulfide ore in the ...
2014-12-1 · Secondary sulfide copper ore was leached in the presence of chloride by means of inoculation with chloride-tolerant culture • Culture contained Leptospirillum strain Sp-Cl and A. thiooxidans-like strain.. Highest copper recovery was achieved at 6 g/L Cl-. Similar CuT extraction and slightly higher Py oxidation was achieved in Cl--tolerant over mesophilic column at 1.5 g/L
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Direct extraction of copper from copper sulfide minerals ...
Direct extraction of copper from copper sulfide minerals using deep eutectic solvents† Syahrie Anggara , a Francesca Bevan , a Robert C. Harris , a Jennifer M. Hartley , ab Gero Frisch , b Gawen R. T. Jenkin c and Andrew P. Abbott * a
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(PDF) metals Pretreatment of Copper Sulphide Ores Prior
2021-7-2 · An alternative to improve the extraction of copper from sulphide ores is the use of a pretreatment process. Several investigations were developed evaluating the effects of pretreatment, mainly in ...
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Accelerating Copper Leaching from Sulfide Ores in Acid ...
This work investigates the effect of an agglomeration and curing pretreatment on leaching of a copper sulfide ore, mainly chalcopyrite, using mini-columns in acid-nitrate-chloride media. Ten pretreatment tests were conducted to evaluate different variables, namely the addition of nitrate as NaNO3 (11.7 and 23.3 kg/ton), chloride as NaCl (2.1 and 19.8 kg/ton), curing time (20 and
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Extraction of copper from complex carbonaceous sulfide
2021-11-1 · 1. Introduction. The complex carbonaceous sulfide ore is categorized under the sediment-hosted stratiform copper deposits which account for about 20–25% of the world's copper production and reserves (Hitzman et al., 2005, Misra, 2000).Carbonaceous sulfide ores host polymetallic minerals characterized by carbonates (dolomite, calcite, magnesite, etc.) and
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Hydrometallurgical method of extraction of copper from ...
Copper content in sulphide-containing materials such as ores or concentrates is extracted by leaching the material by means of a leaching solution containing iron (III) chloride and copper (II) chloride, the leaching process being regulated in order to keep the red-ox potential in the leach solution between 430 mV and 460 mV, whereby iron (III) chloride is reduced to iron (II)
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Leaching of Primary Copper Sulfide Ore in Chloride
2018-7-25 · Abstract: 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.
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Primary copper sulfides bioleaching vs. chloride leaching ...
2017-3-1 · Primary copper sulfides are the most economically relevant due to their abundance. Therefore, several technologies have been developed in order to achieve an efficient copper extraction from these types of copper sulfides. Among these developments, the hydrometallurgical options of bioleaching as well as chemical chloride leaching are ...
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Liquid-liquid extraction of copper (II) from chloride ...
2013-1-15 · The extraction of 0.0011 M copper(II) with 0.05 M to 1.0 M Cyanex 921 in kerosene from 5 M HCl solution was carried out. The percentage extraction of copper increased with increasing extractant concentration. At 0.05 M, the extraction of copper was only 23.05 per cent, whereas it rose to 97.5 per cent at 1.0 M. The plot of log D versus log ...
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(PDF) metals Pretreatment of Copper Sulphide Ores Prior
2021-7-2 · An alternative to improve the extraction of copper from sulphide ores is the use of a pretreatment process. Several investigations were developed evaluating the effects of pretreatment, mainly in ...
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The solvent extraction of CU (II) from Chloride solutions ...
2020-12-8 · CLX-20, for the selective extraction of copper from a synthetic solution simulating leach liquors obtained by ferric chloride leaching of complex sulphide ores. Results show that separation of copper from iron is dependent on the amount of acid and chloride present in the aqueous phase.
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copper extraction and purification - chemguide
2015-7-26 · Sulphide ores such as chalcopyrite are converted to copper by a different method from silicate, carbonate or sulphate ores. Getting copper from chalcopyrite, CuFeS 2. Chalcopyrite (also known as copper pyrites) and similar
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Method of gold extraction from sulphide gold-bearing ores
The invention relates to hydrometallurgy of precious metals and can be used for the extraction of gold from refractory ores and concentrates. For multi-stage technology of gold extraction plant for intrusion resistant gold-bearing ores has developed a number of pyro-and hydrometallurgical methods, while bacterial leaching shows good economic performance and environmental
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Extraction of Metals: From Ores, Definition, Meaning,
2021-6-23 · Usually, the carbonate ores are converted into metal oxide by the process of calcination, whereas sulphide ores are converted into metal oxide by roasting. Let us illustrate the extraction of moderately reactive metals from their ore with examples.
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The most suitable method for extraction of copper from
2020-2-18 · The most suitable method for extraction of copper from low grade sulphide ore is. ... Write the reaction involved in the extraction of copper from low grade ores. 277381619 . 000+ 1.3k+ 1:26 . Very Important Questions. An inorganic iodide (A) on heating with a solution of KOH gives a gas (B) and a solution of a compound. The gas (B) on ignition ...
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Hydrometallurgical method of extraction of copper from ...
Copper content in sulphide-containing materials such as ores or concentrates is extracted by leaching the material by means of a leaching solution containing iron (III) chloride and copper (II) chloride, the leaching process being regulated in order to keep the red-ox potential in the leach solution between 430 mV and 460 mV, whereby iron (III) chloride is reduced to iron (II)
Read More
Liquid-liquid extraction of copper (II) from chloride ...
2013-1-15 · The extraction of 0.0011 M copper(II) with 0.05 M to 1.0 M Cyanex 921 in kerosene from 5 M HCl solution was carried out. The percentage extraction of copper increased with increasing extractant concentration. At 0.05 M, the extraction of copper was only 23.05 per cent, whereas it rose to 97.5 per cent at 1.0 M. The plot of log D versus log ...
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Pretreatment of Copper Sulphide Ores Prior to Heap ...
2021-7-2 · An alternative to improve the extraction of copper from sulphide ores is the use of a pretreatment process. Several investigations were developed evaluating the effects of pretreatment, mainly in the extraction of copper from chalcopyrite in chloride media. This study presents a review of various pretreatment methods prior to heap leaching to ...
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Leaching of Primary Copper Sulfide Ore in Chloride
2018-7-25 · Abstract: 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.
Read More
The solvent extraction of CU (II) from Chloride solutions ...
2020-12-8 · CLX-20, for the selective extraction of copper from a synthetic solution simulating leach liquors obtained by ferric chloride leaching of complex sulphide ores. Results show that separation of copper from iron is dependent on the amount of acid and chloride present in the aqueous phase.
Read More
Accelerating Copper Leaching from Sulfide Ores
This work investigates the effect of an agglomeration and curing pretreatment on leaching of a copper sulfide ore, mainly chalcopyrite, using mini-columns in acid-nitrate-chloride media. Ten pretreatment tests were conducted to evaluate
Read More
Recovery of copper and zinc from complex chloride ...
The solvent extraction separation and recovery of copper and zinc from complex chloride liquors; e.g. those resulting from the low temperature chlorination and leach of a copper-lead-zinc sulphide ore or concentrate; are described, including the selection of sequence, conditions, extractants, scrubbing and stripping media and adaptations for electrowinning and recycle.
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Atmospheric pressure leaching application for the
2013-8-20 · copper is produced by pyrometallurgical processes from sulphide ores, while the remainder is produced by hydrometallurgical processes. Nickel sulphide ores, as well as about 35% of nickel laterites, are processed pyrometallurgically, with the remainder being treated hydrometallurgically (Norgate and Jahanshahi, 2010).
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EXTRACTING METALS FROM SULFIDE ORES
EXTRACTING METALS FROM SULFIDE ORES. Many important metals are present in nature combined with sulfur as metal sulfides; these include cadmium, cobalt, copper, lead, molybdenum, nickel, silver, and zinc. In addition, gold
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The most suitable method for extraction of copper from
2020-2-18 · The most suitable method for extraction of copper from low grade sulphide ore is. ... Write the reaction involved in the extraction of copper from low grade ores. 277381619 . 000+ 1.3k+ 1:26 . Very Important Questions. An inorganic iodide (A) on heating with a solution of KOH gives a gas (B) and a solution of a compound. The gas (B) on ignition ...
Read More