(PDF) Leaching of Copper Sulphides

2021-12-7 · leaching of all copper sulphide minerals, such a s chalcopyrite, bornite, c halcocite, covell ite and digenite ( Valkama, 2013 ). These leach conditions have delivered high recoveries of copper ...

Acid leaching of oxide–sulfide copper ore prior the ...

2015-11-26 · 453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia

What is the best method for sulfide copper leaching?

Bacteria Heap Leaching and Oxidative bacterial heap leaching two methods that apply for low grade copper sulfide leaching. Is the better you done and detailed …

JSCS 74(2) (2009) 213-221: Mesophilic leaching of …

2009-2-13 · LEACHING OF COPPER SULPHIDE SLUDGE 217 The results of copper extraction obtained in terms of biochemical leaching of the sample are presented in Fig. 3 as a plot of the copper content vs. time. The plot shows a pronounced "S"-shaped curve. The section of this curve corresponds to the lag, exponential and asymptotic growth regions, respectively.

What is the best method for sulfide copper leaching?

Leaching of Copper Sulphides - SAIMM

(PDF) Leaching of Copper Sulphides

2021-12-7 · leaching of all copper sulphide minerals, such a s chalcopyrite, bornite, c halcocite, covell ite and digenite ( Valkama, 2013 ). These leach conditions …

Pressure Leaching Kinetics of Complex Copper Sulfide ...

: The pressure leaching kinetics of copper sulfide concentrate with tetrahedrite as the main mineral is studied in the following conditions: the leaching temperature as from 408K to 453K,the initial sulfuric acid concentration as 1.23mol/L,the ratio of liquid to ...

A Studies in leaching of sulphide concentrates of

2011-8-19 · Studies in leaching of sulphide concentrates of copper and nickel from indigenous source M. TOTLANI and J . BALACHANDRA AMONG the several metallurgical processes for re- covery of nickel from sulphide ores, hydrometal- lurg1cal process of pressure leaching with ammonia in the presence of air or oxygen has been one of the

Oxygenated Leaching of Copper Sulfide Mineral under ...

2013-12-24 · Oxygenated Leaching of Copper Sulfide Mineral under Microwave-Hydrothermal Conditions Jiann-Yang Hwang, Shangzhao Shi, Zhiyong Xu and Xiaodi Huang Institute of Materials Processing, Michigan Technological University Houghton, MI 49931 Abstract A study on microwave assisted chalcocite leaching was carried out with a microwave hydrothermal reactor.

The method of underground leaching copper sulfide ores

The method of underground leaching copper sulfide ores. The invention relates to hydrometallurgy and can be used in the processing of sulfide ores methods of underground and heap leaching. The leaching of ores is carried out in the areas of collapse and (or) in the surrounding fractured zones flooded mines. When conditioning the mother liquor ...

Leaching of Copper Sulphides

2016-6-8 · Three copper sulphide leaching and refining processes are discussed: total pressure oxidation, ferric sulphate leaching and copper chloride leaching. The effect of mineralogy on the choice of processing technology is discussed as well as some of the unit processes used. Additionally, possible benefits that a hydrometallurgical process may offer ...

A review of chloride assisted copper sulfide leaching by ...

2016-10-7 · A review of chloride assisted copper sulfide leaching by oxygenated sulfuric acid and mechanistic considerations G. Senanayake* Parker Centre, Faculty of Minerals and Energy, Murdoch University, Perth, WA 6150, Australia Abstract The beneficial effect of chloride on sulfide leaching in sulfuric acid has been widely

Intensification of Sulfuric Acid Leaching of Copper from ...

2020-3-29 · The metals pass into the sulfuric acid solution with the consumption of ozone to dissolve 1 t of sphalerite, pyrite, and chalcopyrite, being 2.2, 3.4, and 2.4 t, respectively. In, technology is described for ozone-assisted leaching of copper from copper sulfide concentrates successfully trialed in the 1980s at Alaverdi Mining and Smelting Works.

Pressure leaching of copper sulphide from nickel refining ...

2021-5-1 · Copper sulphide rich leach residue from nickel refining is a marketable product and may be treated by smelting. In looking for another refining technology for its valorisation, the raw material was characterised and suitability of medium-temperature sulphate-based pressure leaching was tested for this purpose.

Effect of pretreatment prior to leaching on a chalcopyrite ...

2021-11-25 · the copper grade. It is important to develop alternative technologies to work profitably with low-grade copper sulphide ores. One alternative that has been recently studied is the pretreatment of low copper grade sulphide minerals, especially chalcopyrite, to improve leaching efficiency. The curing time, as pretreatment, improves dissolution ...

Copper sulphide ore leaching method using iodine

2008-7-23 · [Translated] Copper sulphide ore leaching method using iodine. Cite. Download. Patent: PE-20100107-A1: Inventor: MANABE NANABU (JP) Assignee: Nippon mining and metals co ltd (JP) Date: Priority . 2008/07/23. This web page summarizes information in PubChem about patent PE-20100107-A1. This includes chemicals mentioned, as reported by PubChem ...

Bioleaching of Covellite from Low Grade Copper Sulphide ...

The economic importance of copper production in Chile has prompted the study of new strategies for the optimal management of mineral resources, including processing of low grade ore and even processing tails (processed ore). Currently, heap bioleaching is the most convenient technology to treat low grade copper sulphide ores bearing chalcopyrite, chalcocite and covellite.

Effect of Roasting Temperature for Copper Leaching of ...

2018-12-6 · Copper Leaching, Chlorination, Potassium Chloride, Chalcopyrite 1. Introduction Copper is found in various combinations of Cu, Fe, S, and other elements in na-How to cite this paper: Nyamjargal, L., Batdemberel, G., Burmaa, G. and Burmaa, D. (2018) Effect of Roasting Temperature for Copper Leaching of Sulfide Concentrate by Combined Methods.

Leaching of Primary Copper Sulfide Ore in Chloride …

2018-7-25 · Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after …

Dissolution kinetics and solubilities of copper sulfides ...

2021-11-1 · Cyanide leaching applied in sequential extractions of porphyry copper tailings samples from the Piuquenes impoundment, La Andina, Chile, improved the selective dissolution of secondary sulfides compared to a previously proposed hydrogen peroxide dissolution method, thus allowing their differentiation from primary sulfide minerals.

Column Bioleaching of a Saline, Calcareous Copper Sulfide ...

"Deep in situ biomining", widely considered to be a potentially environmentally-benign and cost effective biotechnology for extracting and recovering base metals from deep-buried base metal deposits, is being developed within the EU Horizon 2020 project "BioMOre". Data are presented from non-aerated column experiments in which a saline, calcareous copper-rich ore …

LEACHING OF LOW-GRADE COPPER ORES: A CASE …

2017-6-9 · 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

(PDF) LEACHING OF A ROASTED COPPER SULFIDE ORE | …

LEACHING OF A ROASTED COPPER SULFIDE ORE Rosselle Kim P. Castillano, Wilfredo T. Gatdula Jr., Gin Derick L. Magno, Jhunalyn H. Parantar METE 157N: HYDROMETALLURGY LABORTORY ABSTRACT Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition.

GALVANIC INTERACTIONS OF SULFIDE MINERALS IN …

2010-9-13 · copper leaching. Electrochemical nature of sulfides flotation (Chanturija and Vigdergauz, 2009) and leaching along with electrocatalytic properties of pyrite has already been described (Majima and Peters, 1968; Nowak et al., 1984; Holmes and Crundwell, 1995) and used for leaching of copper sulphidic concentrates in the

Methods for leaching copper from copper sulfide ores and ...

2015-3-13 · A method for leaching copper from copper sulfide that can reduce iodine volatilization loss from a leached solution obtained after leaching of copper sulfide ore and that enables more accurate evaluation of iodine loss in a column test is provided. SOLUTION: The potential of the leached solution is lowered with respect to the leached solution ...

Potential for bioleaching copper sulphide rougher ...

2013-1-21 · leaching days, compared to 58 per cent copper extraction in the abiotic oxidative acid leaching experiments. However, there was little effect of time (i.e. poor dissolution kinetics) on copper recovery for abiotic non-oxidative acid leaching of the material. Hence, the rate of sulphide leaching increased due to the activity of bacteria.

INVESTIGATION OF COPPER(I) SULPHIDE LEACHING IN …

2019-11-19 · Leaching of copper (I) sulphide has been the subject of many investigations [2– 6], including leaching under high pressure and atmospheric pressure. The process of copper matte leaching under high pressure conditions, in both acidic and alkaline solutions, necessitates high capital and operation costs.

Copper precipitation during leaching of various copper ...

2016-12-1 · The leaching behavior of copper sulfides in concentrated cupric chloride solution at 95 °C and at ambient pressure was studied in order to scrutinize the leaching behavior of a single bornite and four different chalcopyrite concentrates obtained from various mines around the world.The highest chalcopyrite oxidation was achieved with the highest pyrite content in the …

A BACTERIAL HEAP LEACHING APPROACH FOR THE …

2009-7-18 · 80% of world copper resources consists of low grade chalcopyrite, where the grade is too low to concentrate and which cannot be economically processed in any way other than heap leaching. Mintek is currently developing technology for the heap leaching of primary copper sulphide (chalcopyrite). The leaching of chalcopyrite requires elevated

LEACHING OF COPPER CONCENTRATES

2020-4-2 · copper oxides have been in common use for some time. Prior to the development of the Sherritt-Gordon process for nickel and cobalt in which copper is recovered as high grade copper sulfide, copper sulfides were economically recovered in a hydrometallurgical process only during the leaching of waste dumps. . Need for Hydrometallurgical Processes

Sulphide Leaching

2015-6-24 · Copper sulphate can be used to separate Copper from Nickel in a sulphide ore or Copper from Fe in Cu -Fe sulphide ore. CuSO 4 solution can …

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