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).

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

Finely grained samples of copper(I) sulphide were leached by H 2 SO 4 solution with added NaNO 3.The occurrence probability of chemical reactions was analysed based on literature data and products which were formed during the process and the overall leaching reaction was defined.

US4051220A - Sodium sulfide leach process - Google Patents

A process is disclosed for treating mixed metal sulfides containing trivalent antimony sulfide wherein the sulfide concentrates are leached with an excess of sodium sulfide in order to isolate copper sulfide and other insolubles in solid form while solubilizing the remaining metal sulfides and producing sodium thioantimonite, separating the insoluble sulfides from the solution; oxidizing the ...

A fresh approach to sulfide ores - Canadian Institute of ...

Jun 26, 2017· A smelting workaround. The traditional route for extracting copper from sulfide ores is smelting. Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those ore bodies containing problematic elements like arsenic, which make smelting less economical.

Recovery of Copper from Copper Sulfide Concentrate by ...

fides and copper sulfide for med copper sulfate, whereas iron sulfide converted mostly to hematite at 500˚C [9]. In the present work, a sulfation roasting-acid leaching process that associated pyrometallurgical and hydro-metallurgical methods has been used for the recovery of copper from a copper sulfide concentrate. The reactions

Recovery of Elemental Sulfur During the Ammoniacal ...

Sep 15, 2012· Recovery of Elemental Sulfur During the Ammoniacal Leaching of Copper Sulfide ... The results of this work also confirm that in any proposed reaction mechanism for the oxidative ammoniacal leaching of copper sulfides, a primary oxidation product of the sulfide ion is elemental sulfur. ... and L. G. B. Wadley: The Production of Copper from ...

HEAP LEACHING TECHNIQUE in MINING - Euromines

evaluation of the heap leaching process and available techniques within th e context of ... (<1% copper, <1g/ton gold, ... consideration of ore types, a generalized diagram showing the applicable ore beneficiation technologies for oxide and sulphide ores versus ore grade is given in Figure 2.

Copper Mining and Processing: Processing of Copper Ores ...

Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different ...

Application of SART to Heap Leaching of Gold-Copper

published SART process applied to gold-copper cyanide solutions was selected as it allows rapid precipitation of 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.

What is the best method for sulfide copper leaching?

What is the best method for sulfide copper leaching? ... Spain. A two-stage countercurrent leach process, consisting of an atmospheric leach and a pressure leach, was developed to effectively ...

Cobalt extraction - Wikipedia

By boiling away the ammonia; copper is precipitated as a sulfide and sent to a smelter. Hydrogen sulfide is added to the autoclave to remove nickel sulfide and copper sulfide which is fed back to the leaching process. Air is then passed through the solution in the autoclave for oxyhydrolysis.

Agitated Copper Leaching & Cementation Process

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.

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

copper processing | Definition, History, & Facts ...

The smelting and converting of copper sulfide concentrates result in a "blister" copper that contains 97 to 99 percent of the silver present… In its pure form or as an alloy, copper (Cu) is one of the most important metals in society. The pure metal has a face-centred cubic crystal structure ...

Copper leaching from primary sulfides: Options for ...

The initial plant capacity is set for 60,000 tpa of copper. The autoclave oxidation of pyrite/sulfur will provide virtually all acid and ferric sulfate (and heat) required for the copper leaching process. The process can be considered a "hybrid" of a copper leach and pyrite oxidation process. 1.5.

Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous ...

Copper is considered the third most important metal for industry after iron and aluminum, with a yearly production of 10 Mt [1]. In the north of Chile there are many mining industries that produce copper in cathodes from oxidized minerals with the traditional process of leaching, followed by solvent extraction (SX), and electrowinning (LIX-SX-EW).

BIOX® Process - Outotec

The process was developed for the pre-treatment of refractory concentrates ahead of conventional cyanide leaching for gold recovery. As the gold is encapsulated in sulfide minerals such as pyrite and arsenopyrite, the gold is prevented from being leached by cyanide.

Copper Mining and Extraction: Oxide Ores

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 (11–14), but is introduced here because an important by-product of this process is used for the extraction of oxide ores. Pyroprocessing Sulfide Ores Provides Acid for Leaching

Roasting and Leaching Bulk Copper-Zinc Sulfide ...

Roasting and Leaching Bulk Copper-Zinc Sulfide Concentrates With the Subsequent Recovery of the Metals by Electrolysis. Introduction The standard practice for the treatment of copper-zinc sulfide ores involves the separation of their sulfides by selective flotation, follow-

Copper Projects - ALTA Metallurgical Services

Nifty Copper Operation - WA - Summit Resources - Evaluation of current operation for copper heap leach/SX/EW for oxide and sulphide ores (1998) Dikulushi Project - DR Congo - Anvil Mining - Supervision of metallurgical testwork and prefeasibility study input for copper sulphide flotation operation (1997-98)

Copper Chloride Leaching Process - Outotec

Our copper chloride leaching process utilizes our highly effective atmospheric chloride leaching technology, including gold and silver recovery. We have coupled this with world-renowned VSF solvent extraction and electrowinning technology to make a process that is especially effective with low-grade and impure copper feed materials.

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-

copper extraction and purification

Extracting copper from other ores. Copper can be extracted from non-sulphide ores by a different process involving three separate stages: Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulphuric acid to produce a very dilute copper(II) sulphate solution.

Sulphuric acid leaching of zinc and copper from Nigerian ...

The leaching of zinc and copper from Nigerian bulk sulphide ore with sulphuric acid in the presence of hydrogen peroxide was studied. The aim of the study was to investigate the effectiveness of hydrogen peroxide as an oxidant for the sulphuric acid leaching of zinc and copper from a complex sulphide …

Heap Leach: Mining's breakthrough technology – MINING.COM

Aug 20, 2015· Copper Heap Leaching (Solvent Extraction-Electrowinning – SX-EW) ... use HL to process primary sulfide ores. This would result in a dramatic expansion of …

copper sulfide leaching - tambinh.nl

copper oxide ore leaching and sx plant . In this process copper ore is mined, crushed, ground, concentrated, smelted To be applicable to this process, the ores must contain copper minerals in sulfide . the pregnant liquor is pumped five miles from the leach site to the SX/EW plant. Get Price; Copper Mining and Extraction: Oxide Ores

EP1325164B1 - Pressure leaching process for zinc recovery ...

The process according to claim 1, wherein the zinc sulphide ore or concentrate also contains copper, resulting in the zinc solution from the zinc pressure leaching also containing copper and further comprising the step of subjecting the zinc solution to copper solvent extraction (52) prior to said zinc solvent extraction (54).

Copper Ore Hydrometallurgy and Pressure Leaching-Copper-

Copper hydrometallurgy is a branch of metallurgy method to extract copper directly from those difficult-to-concentrate copper oxide ore. Traditional copper hydrometallurgy process typically consists of atmospheric leaching, solvent extraction (SX) and electro-winning (EW). It can produce either copper cathode or copper sulphate crystal.