copper sulphide leaching process

Leaching of Copper Sulphides - SAIMM

2016-6-8 for copper sulphides. Three copper sulphide leaching and refining processes are discussed: total pressure oxidation, ferric sulphate leaching and copper chloride leaching. Ferric sulphate leaching and copper chloride leaching are carried out at atmospheric pressure while total pressure oxidation takes place at elevated pressures.

(PDF) Leaching of Copper Sulphides - researchgate.net

Three copper sulphide leaching and refining processes are d iscussed: total pressure oxidation, ferric sulphate leaching and copper chloride leaching. Ferric sulphate

Leaching of copper(I) sulphide by sulphuric acid

2003-7-1 Sullivan (1933) studied the leaching processes of copper sulphides by acidified ferric sulphate solutions. He showed that chalcocite (Cu 2 S) dissolves in a two-stage process with covellite (CuS) as the solid product formed at the end of the first stage. In the second stage, the process occurs through the formation of elemental sulphur.

What is the best method for sulfide copper leaching?

Copper sulphides normally concentrates obtained by flotation, were leached with acidic ferric chloride solutions at temperatures above 90 o C maintaining molar ratio for the

copper sulphide leaching process

Lone Star Copper Deposit Near San Jose Arizona The . Nov 09 2018 The rapid leachics and high copper recoveries place FLSmidth ROL s process economics on par with stirred tank leaching of secondary copper sulphide concentrates The key to the high performance of the process is the use of very low energy inter stage or intra stage attrition along with the activation of the mineral to

(PDF) LEACHING OF A ROASTED COPPER SULFIDE

Copper sulphate is soluble in water, so acid will be saved in the leaching process if copper sulphate is present. From assays of the pregnant liquor the percentage extractions of the copper present in the calcine were calculated.

Leaching of Primary Copper Sulfide Ore in Chloride

2018-7-25 includes the addition of reagents such as sodium chloride and ferrous sulfate in the agglomeration. stage, together with the acid, and carrying out the leaching process at an average temperature of. approximately 30 C to increase the percentage of copper extraction from primary sulﬁde

Pressure leaching of copper sulphide from nickel

2021-5-1 Most refineries that process nickel matte in sulphuric acid solution selectively leach nickel over copper producing a small quantity of copper sulphide rich leach residue. During hydrometallurgical nickel processing, one of the targets is to purify the solution to remove copper.

Sulphide Leaching - 911 Metallurgist

2015-6-24 Mixtures of hypochlorous and hydrochloric acid (the former a very powerful oxidizing agent) help leach sulphide ores, the overall reaction being: MS + Cl(aq) ^ MCl2 (aq) + S The technique can be used for Lead (PbS), copper (Cu 2 S and CuS), Iron (FeS 2 and FeS) and Molybdenum (MoS 2 ).

LEACHING OF A Cu-CoORE FROM CONGO USING

2013-7-23 leach copper from oxide minerals such as malachite (CuCO 3.Cu(OH) 2), azurite (2CuCO 3.Cu(OH) 2) and chrysocolla (CuO.SiO 2.2H 2 O). Sulphuric acid was also used to easily leach copper from a roasted Cu-Pb matte [4]. Such a leaching scheme however needs to be modified to also extract cobalt as this metal exists mainly as Co(III). Common Co(III) minerals such as

Copper sulphate leaching process - Metso Outotec

Metso Outotec's sulphate leaching process is a sustainable and economical solution that it is especially effective on low-grade and impure copper feed materials. The process uses highly effective atmospheric leaching technology combined with world-renowned VSF

copper sulphide leaching process

(PDF) LEACHING OF A ROASTED COPPER SULFIDE

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

2015-11-26 leaching process has achieved a better economic result. In the present study the leaching of oxide-sulfide copper ore was considered, and a modification of the existing process was performed by inserting the leach-ing process between the ore milling and the flotation sections. Therefore, a higher overall efficiency of the copper removal, from such minerals blend, was obtained.

Leaching process for copper concentrates - The

2005-6-1 A method of leaching copper from copper sulphide-containing concentrates, such as chalcopyrite, includes using pyrite as a catalyst for ferric reduction in order to eliminate passivation of the chalcopyrite surface, the process being carried out under conditions whereby the pyrite is not materially oxidized, for example by maintaining the operating solution potential at a suitable level.

Direct Leaching of sulfides: Chemistry and applications ...

1. F. A. Forward: “Ammonia Pressure Leach Process for Recovering Nickel, Copper, and Cobalt from Sherritt Gordon Nickel Sulphide Concentrates,” CIMM Trans., 1953, vol. 56, p. 373. See also F. A. Forward and V. N. Mackiw: J. Metals, 1955, vol. 7, p. 457.

LEACHING OF A Cu-CoORE FROM CONGO USING

Process and Economic Considerations in Copper Metallurgy

2015-7-28 The copper sulphide itself is the valuable product. Heap Leaching • Used extensively in copper • South Western USA and Chile • Oxide ores, using a simple acid reaction • More recently applied to sulphide ores ... HotHeap process could make sulphide heap leaching the

Cu Leaching Using Regenerated Ferric Sulphate

high-grade copper feeds are prohibitive, unless the resulting ferrous sulphate is reoxidized and reused. A plant recently commissioned in Australia employs an autoclave for that purpose. This paper describes a novel approach, called the “Regenerated Ferric Sulphate Leaching (RFSL) process, in which the reoxidation of the ferrous ion is

Advances in high-temperature heap leaching of refractory ...

2012-12-13 considered in oxide heap leaching are the copper dissolution, acid consumption, and gangue chemistry. The rate at which acid can be supplied to the heap is constrained by the increase in undesirable gangue reactions that may occur. By introducing forced aeration and bacterial activity to the heaps, an oxidative environment suitable for sulphide conversion can be created. This has allowed heap leaching

Copper sulphate leaching process - Metso Outotec

copper sulphide leaching process

THE METHODS OF OXIDATION OF SULPHIDE FORM OF

2018-1-4 The attained degree of copper leaching was 92.03%. The process of sulphide destruction and copper leaching from flotation tailings sample with concentrated sulphuric acid at 630°C and leaching of calcine with water has resulted into copper leaching degree of 92%. Solutions, after leaching, contain about 2 g/l Cu and less than 1 g/l and Fe and ...

TECK’S CESL COPPER PROCESS: A COMMERCIAL READY

2015-11-20 implement Teck’s CESL Copper Process. The CESL Copper Process is as a medium temperature pressure leach for sulphide concentrates in the presence of chloride catalytic ions (12 g/L). In most cases a light re-grind of the mill concentrate is necessary to reduce particle size. Grinding the concentrate increases the

Process and Economic Considerations in Copper Metallurgy

Direct Leaching of sulfides: Chemistry and applications ...

Copper Mining and Extraction Sulfide 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 ores. Scrubbing sulfur dioxide also protects the environment. For example: FeO(s) + SiO 2 (s)→ FeO.SiO 2 (slag)

Oxidative Hydrometallurgy of Sulphide Minerals

2018-9-25 oxidative leaching with ozone is relevant in copper-iron sulphide and gold- and silver- containing sulphides. Moreover , oxidative leaching of coal-containing iron sulphide might also have a positive impact on coal cleaning prior to its use in energy related applications. The hydrometallurgy of different sulphide minerals will be treated.

Hydromet Group - Hydrometallurgy at the University

UBC/Cominco copper chloride leach. This process was invented by Dr. Ernie Peters and COMINCO Ltd. (now TECK) to extract copper and iron from copper sulphide concentrates in an acidic chloride solution. It is one of the first examples of chloride hydrometallurgy. (Canadian Patent 938,793).

Chloride heap leaching - BHP Billiton SA Limited

The invention provides a method of recovering copper from a material, in a heap, that contains a copper sulphide mineral, which includes the steps of leaching the material in an acidic chloride or a mixed chloride/sulphate solution in the presence of dissolved oxygen, maintaining the mineral's surface potential below 600 mV (vs. SHE) to cause dissolution of the copper sulphide, and recovering copper from the

copper sulphide leaching process -

Escondida sulphide leach project1.96 Мб. GENERAL DESCRIPTION The Escondida Sulphide Leach Project (SLP) has been designed to initially produce 180,000 tonnes-per-annum (tpa) of high quality copper cathode through a process of bacterially assisted leaching of low-grade ROM sulphide

copper sulphide leaching process

THE METHODS OF OXIDATION OF SULPHIDE FORM OF

TECK’S CESL COPPER PROCESS: A COMMERCIAL READY

New breakthrough copper recovery process

2018-11-9 The rapid leach kinetics and high copper recoveries place FLSmidth ROL’s process economics on par with stirred-tank leaching of secondary copper sulphide concentrates. The key to the high performance of the process is the use of very low

Process and Economic Considerations in Copper Metallurgy

Process development studies by Dynatec for the

1999-8-25 Process development studies by Dynatec for the pressure leaching of HBMS copper sulphide concentrates Author STIKSMA, J 1; COLLINS, M. J 1; HOLLOWAY, P 1; MASTERS, I. M 1; DESROCHES, G. J 2 [1] Metallurgical Technologies Division, Dynatec Corporation, Fort

Oxidative Hydrometallurgy of Sulphide Minerals

Albion Process - Recent Developments on Copper

2019-5-1 Albion Process Leaching 10 Commercial plant at Xstrata Zinc operation in Spain 280 m3 Leach Tank Oxygen Sparger. Opportunities to Add Value • Alternative products ... Other (Cement, Copper Sulphide, Copper Oxide) • Copper cement – concentrates or low cost scrap iron available • Intermediate product – market nearby or integrated flowsheet

How Sherritt Refines Nickel

2010-10-1 solid copper sulphide. The slurry is passed through a lamella thickener and polish filters to recover the copper sulphide solids. The clarified solution then proceeds to nickel recovery. The solids in the thickener underflow are filtered, washed and sold as feed to a copper smelter. How Sherritt Refines Nickel . Nickel Recovery

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