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Leaching of Copper Sulphides SAIMM

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

(PDF) Leaching of Copper Sulphides

Jul 01, 2015 Three copper sulphide leaching and refining processes are discussed: total pressure oxidation, ferric sulphate leaching and copper chloride leaching. required for the copper leaching process

New breakthrough copper recovery process developed by

Nov 09, 2018 The rapid leach kinetics and high copper recoveries place 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

In situ recovery of copper sulfide ores: Alternative

Sep 01, 2020 In process scheme 1, indirect bioleaching (IBL), the ore bed porosity is assumed to be completely filled with the leaching solution and leaching of copper sulfides occurred just with the 3 g/L of ferric contained in the incoming leaching solution produced in an external bioreactor (Pakostova et al., 2017; Biomore, 2018).

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

Copper Sulfide an overview ScienceDirect Topics

All copper sulfides require the presence of Fe 3+ and O 2 as oxidizing agents for leaching to occur. The copper sulfide is oxidized by Fe 3+.The resulting Fe 2+ is reoxidized to Fe 3+ by O 2.The Fe(II)/Fe(III) redox couple acts in a catalytic manner in these reactions (shown for elevated-temperature reaction conditions where the sulfur-containing product is sulfate, rather than the elemental

New breakthrough copper recovery process developed by

Nov 09, 2018 The rapid leach kinetics and high copper recoveries place 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

In situ recovery of copper sulfide ores: Alternative

Sep 01, 2020 In process scheme 1, indirect bioleaching (IBL), the ore bed porosity is assumed to be completely filled with the leaching solution and leaching of copper sulfides occurred just with the 3 g/L of ferric contained in the incoming leaching solution produced in an external bioreactor (Pakostova et al., 2017; Biomore, 2018).

Process for leaching copper from copper sulfide using

The invention is directed to a process for leaching copper by a bacteria leaching process using ores containing copper sulfide, wherein copper is leached with an acid leaching solution having a redox potential of from 550 to 750 mV, based on a silver/silver chloride electrode as a standard.

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

First Chalcopyrite Copper Concentrate Leaching using

the region and wanted to prove up the concept of sulphide copper leaching at a commercial scale using the Albion Process TM. A very cheap retrofit was undertaken on the existing oxide leach circuit and then fed a predominantly chalcopyrite/bornite concentrate (28-30% Cu).

Copper recovery using leach/solvent extraction

The second process, heap and dump leaching of low-grade oxide and/or sulphide ore followed by precipitation of low quality copper from the leach solution on scrap iron, was practiced on oxide ore that was too low-grade for vat leaching, or low grade sulphide ore that had to be mined in order to expose the underlying high grade sulfide ore

Optimization of parameters affecting recovery of copper

In this work, the bioleaching process for the extraction of copper from low-grade sulfide ores was evaluated in a sample taken from Sarcheshmeh Copper Mine. The aim of this work was to evaluate the parameters affecting the recovery of copper from low-grade sulfide ores such as temperature, pH, and bacterial population

PRESSURE LEACHING RPMGlobal

The science of sulfide pressure leaching was advanced dramatically when the Cominco (now Teck) Trail plant built a pressure leach facility for zinc concentrates (1971). This plant was a “medium” temperature process where sulfides were oxidized at 150o C and approximately 1,400 kPa using oxygen. Its’ success

Hydromet Group Hydrometallurgy at the University of

Sherritt process for nickel and cobalt sulphide pressure leaching. This technology was developed as an alternative to smelting for the Lyn Lake, Manitoba deposit by Dr. Frank Forward in collaboration with Sherritt Gordon Mines Ltd. It was the first commercial application of pressure leaching for nickel sulphide concentrates.

Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous

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. Leaching

EP3184657A1 Copper sulphide leaching inferrous chloride

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

Process for leaching copper from copper sulfide using

The invention is directed to a process for leaching copper by a bacteria leaching process using ores containing copper sulfide, wherein copper is leached with an acid leaching solution having a redox potential of from 550 to 750 mV, based on a silver/silver chloride electrode as a standard.

Effect of Pretreatment on Leaching Primary Copper Sulfide

The aim of this study was to improve the dissolution of copper sulfide ore composed mainly of chalcopyrite (1.21 wt %) and bornite (0.54 wt %) using a pretreatment before leaching. The effect of the pretreatment on copper sulfide dissolution was investigated using different types of leaching. Three sets of experimental tests were performed (flask, reactor and mini-column).

A fresh approach to sulfide ores CIM

Jun 26, 2017 The first step in the discovery process was a comprehensive review of decades of research on copper sulfide leaching. In doing so, the team detected a pattern that suggested that surface abrasion alone could have a significant impact on a mineral’s leaching behaviour.

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.

Acid leaching of oxide–sulfide copper ore prior the

per over 90%. Compared with the copper leaching effi-ciency of about 35% in the mill running technology the 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-

Optimization of parameters affecting recovery of copper

In this work, the bioleaching process for the extraction of copper from low-grade sulfide ores was evaluated in a sample taken from Sarcheshmeh Copper Mine. The aim of this work was to evaluate the parameters affecting the recovery of copper from low-grade sulfide ores such as temperature, pH, and bacterial population

PRESSURE LEACHING RPMGlobal

The science of sulfide pressure leaching was advanced dramatically when the Cominco (now Teck) Trail plant built a pressure leach facility for zinc concentrates (1971). This plant was a “medium” temperature process where sulfides were oxidized at 150o C and approximately 1,400 kPa using oxygen. Its’ success

Sulphide Gold Ore Treatment by Leaching and Flotation Process

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

Processes extraction, mining, smelting, refining

Leaching offers an alternative to copper mining. First, the ore is treated with dilute sulphuric acid. This trickles slowly down through the ore, over a period of months, dissolving copper to form a weak solution of copper sulphate. The copper is then recovered by electrolysis. This process is known as SX-EW (solvent extraction/electrowinning).

The cuprex metal extraction process: Recovering copper

The Cuprex™ metal extraction process produces cathode-grade copper using a hydrometallurgical process based on chloride leaching of sulfide ore concentrates. The process incorporates several novel steps to overcome the major problems associated with earlier chloride-based processes, including mild leaching conditions using ferric chloride as leachant and solvent extraction of copper usinga

HYDROMETALLURGY 11 Handling increasing impurities

copper sulphide concentrates: Processing of sulphides The NONOX Process utilises a combination of copper metathesis and hydrothermal leach mechanisms to remove or reduce impurities from copper sulphide concentrates while significantly upgrading the copper content. Primarily chalcopyrite and bornite minerals are reacted with copper sulphate which

STUDIES ON THE CURING AND LEACHING KINETICS OF

Figure 2.11 Typical permanent heap leach operation for low grade copper oxides and secondary sulfides with minor amounts of primary copper sulfides .. 23 Figure 3.1 Acid curing of mixed copper ores is a batch process.. 33 Figure 4.1 Column leach of mixed copper ores is a continuous aqueous phase process