Get a Quote

copper sulphide leaching process

Copper Mining and Processing Processing Copper Ores

Copper Mining and Processing Processing Copper Ores

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 benchscale and pilot plant testwork completed by Kinross The Cuprex metal extraction process produces cathodegrade 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 chloridebased processes including mild leaching conditions using ferric chloride as leachant and solvent extraction of copper usinga Escondida sulphide leach project196 GENERAL DESCRIPTION The Escondida Sulphide Leach Project SLP has been designed to initially produce 180000 tonnesperannum tpa of high quality copper cathode through a process of bacterially assisted leaching of lowgrade ROM sulphide

detail
PDF LEACHING OF A ROASTED COPPER SULFIDE ORE

PDF LEACHING OF A ROASTED COPPER SULFIDE ORE

Copper processing is a complicated process that begins with mining of the ore less than 1 copper and ends with sheets of 9999 pure copper called cathodes which will ultimately be made into products for everyday useThe most common types of ore copper oxide and copper sulfide undergo two different processes hydrometallurgy and pyrometallurgy respectively due to the different hours The rapid leach kinetics and high copper recoveries place the process economics on par with stirredtank leaching of secondary copper sulphide concentrates The key to process performance is the use of very lowenergy interstage andor intrastage attritiongrinding to enhance the selective dissolution of copperbearing minerals by a 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

detail
PDF A model for the bacterial leaching of copper sulfide

PDF A model for the bacterial leaching of copper sulfide

A model for the bacterial leaching of copper sulfide ores in pilotscale columns Jorge Castillo Related Papers A comprehensive model for copper sulphide heap leaching By Mark Cross Process engineering aspects of the bioleaching of copper ores 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 Most of the copper ores mined today are oxide or sulfide ores Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction Sulfide Ores 1114 but is introduced here because an important byproduct of this process is used for the extraction of oxide ores Pyroprocessing Sulfide Ores Provides Acid for Leaching

detail
The Intec Copper Process

The Intec Copper Process

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 sulphate either insitu during the leach or exsitu in a separate reactor Initial results have been presented for copper and zinc sulphide minerals 1920 Copper pressure leaching process consists of the following main steps Concentrate repulping Pressure oxidation of sulfides Hot curing Solidliquid separation Neutralization Copper solvent extraction Copper electrowinning Water balance management and bleed treatment Jul 01 2003 Sullivan 1933 studied the leaching processes of copper sulphides by acidified ferric sulphate solutions He showed that chalcocite Cu 2 S dissolves in a twostage 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

detail
A review of chloride assisted copper sulfide leaching by

A review of chloride assisted copper sulfide leaching by

In this work the bioleaching process for the extraction of copper from lowgrade 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 lowgrade sulfide ores such as temperature pH and bacterial population 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 Our copper chloride leaching process utilizes our highly effective atmospheric chloride leaching technology including gold and silver recovery We have coupled this with worldrenowned VSF solvent extraction and electrowinning technology to make a process that is especially effective with lowgrade and impure copper feed materials

detail
Copper Pressure Leaching Process Metso Outotec

Copper Pressure Leaching Process Metso Outotec

This process treats copper concentrates either in the form of a primary sulfide such as chalcopyrite or a secondary sulfide such as chalcocite and covellite to obtain high purity copper metal having not less than 9999 purity In the case of a primary sulfide the copper concentrate is subjected to leaching and is transformed into cement or a precipitated sulfide ores via leaching tests in shaking asks to later carry out a conventional leaching process obtaining a copper extraction of 605 for sulphide copper ores without pretreatment Aug 07 2021 It is a process used in metallurgy to work oxidized minerals The leaching of copper sulphide ores is carried out by means of bacterial leaching Bioleaching Microorganisms assisted leaching occurs which function as catalysts Bioleaching is a technique used to recover metals such as copper silver and gold

detail
Pretreatment of Copper Sulphide Ores Prior to Heap

Pretreatment of Copper Sulphide Ores Prior to Heap

Three copper sulphide leaching and refining processes are d iscussed total pressure oxidation ferric sulphate leaching and copper chloride leaching Ferric sulphate leaching and Jul 01 2003 The process of copperI 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 Nov 09 2018 The rapid leach kinetics and high copper recoveries place FLSmidth ROLs process economics on par with stirredtank leaching of secondary copper sulphide concentrates The key to the high performance of the process is the use of very low energy interstage or intrastage attrition along with the activation of the mineral to enhance the

detail
US6455019B2 Process for the extraction of copper from a

US6455019B2 Process for the extraction of copper from a

May 01 2021 Base metal refineries in the platinum group metal business commonly also produce copper sulphide rich leach residue and refine it further to recover copper and noble metals These refineries typically use mediumtemperature sulphatebased pressure leaching to leach copper and to leave noble metals in the residue Plasket and Romanchuk 1978 Brugman and Kerfoot 1986 of copper can be converted into a soluble form by leaching where the chemistry of the process is simple Copper carbonates and oxides are present mainly in the oxidation zone oxide hats above the sulphide deposits Sulphide copper minerals chalcocite covellite and chalcopyrite which are mostly Beginning in the mid 1980s a new technology commonly known as the leachsolvent extractionelectrowinning process or SXEW Process was widely adopted This new copper technology utilizes smelter acid to produce copper from oxidized ores and mine wastes Today worldwide approximately 20 of all copper produced is produced by this is process

detail