copper sulphide leaching process

(PDF) Leaching of Copper Sulphides - ResearchGate

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 ...

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Leaching of Copper Sulphides - SAIMM

Three copper sulphide leaching processes are discussed in the sections that follow. Total pressure oxidation (POX) and ferric sulphate leaching are carried out in environments that are sulphate-based while copper chloride leaching takes place in a chloride-based solution environment. Total Pressure Oxidation Total POX plants operated in the USA in the 1950s and, more recently, continue to ...

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

01/07/2003  The process of copper(I) sulphide leaching in H 2 SO 4 solution in the presence of NaNO 3 is a complex heterogenous process. Kinetic analysis was made on the basis of experimental results Fig. 2, Fig. 3, Fig. 4. 5.1. Activation energy. Activation energy for the process of copper(I) sulphide leaching was determined by using the kinetic equations of Ginstling-Brounshtein, Spenser-Topley and ...

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Process for leaching copper from copper sulfide using ...

An object thereof is to provide improvements in the rate of leaching of copper in the bacteria leaching process with copper sulfide, as employed at present. Also, the present invention provides a process that promotes the overall velocity and rate of leaching. The present inventors have studied the use of ores containing chalcocite to achieve the above object and, have developed the following ...

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copper sulphide leaching process - greenrevolution

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

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New breakthrough copper recovery process developed by

09/11/2018  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 energy, inter-stage or intra-stage attrition along with the activation of the mineral to enhance the selective dissolution of copper-bearing minerals.

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Copper Mining and Extraction Sulfide Ores

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) This is very similar to the removal of impurities in the blast furnace. The liquid left is a mixture of copper sulfides and iron sulfides. It is called a matte. Stage 5: Conversion of matte to ...

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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 search in Geo Coat processes and etc.

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Copper Mining and Extraction Sulfide Ores

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) This is very similar to the removal of impurities in the blast furnace. The liquid left is a mixture of copper sulfides and iron sulfides. It is called a matte. Stage 5: Conversion of matte to ...

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(PDF) A model for the bacterial leaching of copper sulfide ...

Modelling of the bacterial leaching of copper sulfide ores has been devel- oped mainly with reference to the metallurgical aspects of the process, being the bacterial role included in an implicit form. Madsen et al. (1975) mo- delled the leaching of sulfide ores by ferric iron in a pilot column, assuming a constant ferric ion concentration profile along the column, a condition ful- filled in ...

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copper sulphide leaching process - greenrevolution

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

More

Process for leaching copper from copper sulfide using ...

An object thereof is to provide improvements in the rate of leaching of copper in the bacteria leaching process with copper sulfide, as employed at present. Also, the present invention provides a process that promotes the overall velocity and rate of leaching. The present inventors have studied the use of ores containing chalcocite to achieve the above object and, have developed the following ...

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A step closer to the leaching of primary sulfides.pdf - A ...

The majority of copper sulfide reserves are found in the form of primary sulfides, which may be processed by flotation followed by smelting/refining. This metallurgical route is almost generally the preferred method to process this type of ore. However, certain hydrometallurgical process can be less expensive and potentially more amenable with the environment.

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Cu Leaching Using Regenerated Ferric Sulphate

ies, regenerated ferric sulphate leach processes were proposed for copper sulphide minerals and for zinc sulphide minerals, whereby SO. 2 /O. 2. mixtures were used to regenerate ferric sul-phate, either in-situ (during the leach) or ex-situ (in a separate reactor). Initial results have been presented for copper and zinc sulphide minerals (19,20).

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How Hydrometallurgy and the SX/EW Process Made

This is used as an adjunct to the SX/EW process in situations where sulfide copper minerals must be leached. Modern commercial application of bacterial leaching began in the 1950s at Kennecott's Bingham mine near Salt Lake City, Utah. It was noticed that blue copper-containing solutions were running out of waste piles that contained copper sulfide minerals - a condition that should not have ...

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Copper Leaching Method

Table of ContentsBringing Copper Metal into SolutionRecovering Copper Metal from Leach LiquorsCopper Leaching EquipmentCopper Leaching CostsCopper Leaching Practices The advance made in recent times in this branch of metallurgy is indicated by the attention the subject is receiving from important American Copper producing companies. Reference to the files of publications devoted to

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Application of SART to Heap Leaching of Gold-Copper

cyanide soluble copper as a relatively pure copper sulphide. The process also allows effective recovery and recycle of cyanide back to the heap leach operation. This paper reviews the SART process chemistry and presents a summary of SART bench-scale and pilot plant . testwork completed by Kinross. Key design parameters and engineering aspects of the proposed plant at Maricunga are discussed ...

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Heap Leach: Mining's breakthrough technology -

20/08/2015  This would result in a dramatic expansion of the technology as ~80% of total ore types are sulfide in nature. Heap Leaching, at first sight, seems to be a relatively simple technology, but is in ...

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How Hydrometallurgy and the SX/EW Process Made

This is used as an adjunct to the SX/EW process in situations where sulfide copper minerals must be leached. Modern commercial application of bacterial leaching began in the 1950s at Kennecott's Bingham mine near Salt Lake City, Utah. It was noticed that blue copper-containing solutions were running out of waste piles that contained copper sulfide minerals - a condition that should not have ...

More

Process for leaching copper from copper sulfide using ...

An object thereof is to provide improvements in the rate of leaching of copper in the bacteria leaching process with copper sulfide, as employed at present. Also, the present invention provides a process that promotes the overall velocity and rate of leaching. The present inventors have studied the use of ores containing chalcocite to achieve the above object and, have developed the following ...

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EP3184657A1 - Copper sulphide leaching inferrous

The present invention relates to a method for leaching secondary and primary sulphides of copper in a ferrous chloride medium with iron-oxidising bacteria adapted from the crushing of the mineral from the mine, comprising the steps of: mixing the mineral from the crushing with concentrated sulphuric acid; transporting the material mixed with sulphuric acid by means of a belt; adding a liquid ...

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copper sulphide leaching process - greenrevolution

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

More

Direct Leaching of sulfides: Chemistry and applications ...

The sulfide minerals associated with copper, nickel, zinc, lead, and molybdenum concentrates are described according to their thermodynamic stability zones on Eh-pH diagrams. From these zones, the chemistry associated with various thermodynamically feasible decomposition paths is discussed, and process developments associated with the most favorable decomposition paths are briefly reviewed.

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Copper recovery using leach/solvent extraction ...

leaching, or low grade sulphide ore that had to be mined in order to expose the underlying high grade sulfide ore. Copper recovered from leaching low grade copper ores was considered a bonus and little effort had been made to fully understand the leaching process or to maximize copper recovery. While some fundamental leaching studies had taken place8,9, on the whole leaching was a poorly ...

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Cu Leaching Using Regenerated Ferric Sulphate

ies, regenerated ferric sulphate leach processes were proposed for copper sulphide minerals and for zinc sulphide minerals, whereby SO. 2 /O. 2. mixtures were used to regenerate ferric sul-phate, either in-situ (during the leach) or ex-situ (in a separate reactor). Initial results have been presented for copper and zinc sulphide minerals (19,20).

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STUDIES ON THE CURING AND LEACHING KINETICS OF MIXED ...

Figure 2.1 Copper minerals formed by weathering of a copper sulfide vein, after Moon et al, 2006..... 7 Figure 2.2 Characteristics of different leaching techniques (Kinnunen 2004)..... 8 Figure 2.3 Leaching process vs. ore grade and particle size..... 9 Figure 2.4 Column leaching on mineral with particle size -10 millimeters irrigated with a solution of 10 g/L H2SO4 and 3 g/L Fe 3+ (Iasillo ...

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Application of SART to Heap Leaching of Gold-Copper

cyanide soluble copper as a relatively pure copper sulphide. The process also allows effective recovery and recycle of cyanide back to the heap leach operation. This paper reviews the SART process chemistry and presents a summary of SART bench-scale and pilot plant . testwork completed by Kinross. Key design parameters and engineering aspects of the proposed plant at Maricunga are discussed ...

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Bioleaching: Introduction, Methods, Application,

Bioleaching: Introduction, Methods, Application, Copper, Microorganisms, and Processes! Introduction to Bioleaching: Leaching process was first observed in pumps and pipelines installed in mine pits containing acid water. This process was later on employed for recovering metals from ores containing low quantity of the metal. Presently certain metals from sulfide ores and other ores are ...

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(PDF) A model for the bacterial leaching of copper sulfide ...

Modelling of the bacterial leaching of copper sulfide ores has been devel- oped mainly with reference to the metallurgical aspects of the process, being the bacterial role included in an implicit form. Madsen et al. (1975) mo- delled the leaching of sulfide ores by ferric iron in a pilot column, assuming a constant ferric ion concentration profile along the column, a condition ful- filled in ...

More

Cu Leaching Using Regenerated Ferric Sulphate

ies, regenerated ferric sulphate leach processes were proposed for copper sulphide minerals and for zinc sulphide minerals, whereby SO. 2 /O. 2. mixtures were used to regenerate ferric sul-phate, either in-situ (during the leach) or ex-situ (in a separate reactor). Initial results have been presented for copper and zinc sulphide minerals (19,20).

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CA2872664A1 - Sulfide ore leaching process - Google

The present invention discloses a new process for leaching sulfide minerals consisting of leaching crushed ore in a vat reactor, wherein the leaching solution is fed with an ORP value close to the upper limit suitable for leaching and the exiting leaching solution leaves the reactor with an ORP above the lower limit suitable for leaching the ore.

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Application of SART to Heap Leaching of Gold-Copper

cyanide soluble copper as a relatively pure copper sulphide. The process also allows effective recovery and recycle of cyanide back to the heap leach operation. This paper reviews the SART process chemistry and presents a summary of SART bench-scale and pilot plant . testwork completed by Kinross. Key design parameters and engineering aspects of the proposed plant at Maricunga are discussed ...

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Main Copper Sulphide Extraction Process Mining Pedia

Therefore, froth flotation process is the main mineral process method used for the extraction of copper from copper sulphide. The common collector added in the flotation machine used for the extraction of copper from copper sulphide is xanthate collector, followed by aerofloat and its esters. Actually, the collecting effect is much better if ...

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copper sulphide leaching process - ladonatella

Copper Agitated Leaching and cementation process of copper problem: The treatment of copper ores, both oxides and sulfides by means of flotation, hydrometallurgy or other processes has been well established for many years. Flotation has been applied generally to the treatment of sulfide ores, both in small and large scale operations.

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STUDIES ON THE CURING AND LEACHING KINETICS OF MIXED ...

Figure 2.1 Copper minerals formed by weathering of a copper sulfide vein, after Moon et al, 2006..... 7 Figure 2.2 Characteristics of different leaching techniques (Kinnunen 2004)..... 8 Figure 2.3 Leaching process vs. ore grade and particle size..... 9 Figure 2.4 Column leaching on mineral with particle size -10 millimeters irrigated with a solution of 10 g/L H2SO4 and 3 g/L Fe 3+ (Iasillo ...

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Sulphide Gold Ore Treatment by Leaching and Flotation

Problem with gold recovery from sulphide ore: How may a mill get the maximum recovery of gold from a sulphide ore, at the least capital cost and at the same time obtain the highest net return. This latter point is most important. In many cases a gold mill using an all-cyanide flowsheet with fine grinding of all the ore will report very low gold content in the tailings particularly on an ...

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Continuous Vat Leaching (CVL) Glycine Leaching ...

The Glycine Leaching Process is an environmentally benign hydrometallurgical process that will leach base and precious metal oxide, mixed oxide and sulphide ores. Glycine is the simplest and cheapest amino acid, and is available in bulk in different grades. It is an environmentally safe and stable reagent and is biodegradable and easily ...

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The Case for Glycine Heap Leaching

Alkaline glycine solutions provide a selective leach process where valuable metals including gold, copper, nickel, cobalt, zinc and lead are extracted while most gangue minerals are completely inert. The principle reagent, glycine, is recovered and continuously re -used. Metals are recovered from the leach solution by conventional downstream processes such as SX -EW, sulphide precipitation and ...

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