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copper leaching concentrates

  • Leaching Chalcopyrite Concentrate with Oxygen and Sulfuric ...

    Abstract: This article presents a copper leaching process from chalcopyrite concentrates using a lowpressure reactor. The experiments were carried out in a 30 L batch reactor at an oxygen pressure of 1 kg/cm2 and solid concentration of 100 g/L.


  • Nitric Sulfuric Leach of Copper Concentrate

    Nitric Acid Processes The use of nitric acid and mixed nitric-sulfuric acids as a hydrometallurgical process leach medium has been known since the early 1900's. Recent work, based on the nitric-sulfuric leach systems has been described by Prater et al and Bjorling et al for copper concentrates and by Ouellet et al for nickel concentrate.


  • Copper recovery using leach/solvent extraction ...

    Copper recovery using leach/solvent extraction/electrowinning technology 65 (Figure 2) and a catalytic amount of LIX 63, was introduced in 19657 and in March 1968 the first commercial copper L/SX/EW operation, the Bluebird plan of Ranchers


  • Copper extraction - Wikipedia

    Hydrometallurgical considerations in processing arsenic-rich copper concentrates *Henry Salomon-de-Friedberg1 and Keith Mayhew1, Adalbert Lossin2 and Vanya Omaynikova2 1Teck Resources Limited 12380 Horseshoe Way Richmond, BC Canada V7A 4Z1


  • How and why do we produce gold and copper concentrates ...

    for its minerals. It is important to note that our gold/copper/silver concentrates are already a highly processed and beneficiated product. Whilst the smelters do charge to process our concentrate, on average for the contract terms that we have agreed with the overseas smelters, we receive 97% of the total value of gold, silver and copper.


  • Pressure Leaching of Copper Concentrates

    2 October 25th, 2004 Presentation Outline Safety share Introduction Global copper reserves/resources Phelps Dodge production & reserves profile Commercial drivers for copper concentrate leaching The copper concentrate market and TC/RCs Phelps Dodge copper pressure leaching developments High temperature Medium temperature Critical success factors for commercialization


  • Leaching and recovery of platinum group metals from UG …

    Leaching and recovery of platinum group metals from UG-2 concentrates yields were not good (less than 40 per cent). Platinum leaching was particularly poor with cyanide (ambient temperature). A HCl/chlorine leach on untreated material had the same effect as a cyanide leach with a nitric acid pre-leach,


  • Pressure Leaching of Copper Concentrates - MetSoc of CIM

    2 October 25th, 2004 Presentation Outline Safety share Introduction yGlobal copper reserves/resources yPhelps Dodge production & reserves profile Commercial drivers for copper concentrate leaching The copper concentrate market and TC/RCs Phelps Dodge copper pressure leaching developments yHigh temperature yMedium temperature Critical success factors for commercialization


  • US8795612B2 - Leaching process for copper concentrates ...

    A method of recovering copper from chalcopyrite concentrate by chemical leaching, using pyrite and silver. The catalytic properties of pyrite in the chalcopyrite leaching process are significantly enhanced by pretreating the pyrite with silver ions. Particulate pyrite is exposed to a solution containing silver ions to form silver-treated pyrite.


  • Producing Copper Nature's Way: Bioleaching

    Nutrients are added. Copper concentrate is added to the reactor in an amount so as to provide a pregnant liquor containing 30-40 grams per liter (which is reduced to 20-25 grams per liter after washing the leach residue), for feed to the SXEW plant. Leaching of chalcopyrite concentrates is complete within 10 days retention time.


  • COPPER LEACHING AND CONCENTRATION - YouTube

    Oct 17, 2015· Water is sprayed on old copper mine workings to dissolve copper from rock that could not be mined at a profit. The resulting copper-sulphate …


  • (PDF) Acid leaching of a nickel sulfide concentrate

    [Show full abstract] copper-zinc concentrates without any mechanical pretreatment provided that ferric ions are present in the system and leaching is carried out at 90-100 degree C. Copper from ...


  • Influence of Ferric and Ferrous Iron on Chemical and ...

    of copper and iron from flotation concentrates including both primary and secondary copper sulfides has not been well studied as yet. Hence, this research was done to in-vestigate the effect of these cations on chemical and bac-terial leaching of Sarcheshmeh copper concentrate in the presence and absence of mixed cultures of moderately


  • InLine Leach Reactor Benefits For Cu-Au Concentrates

    Case Study 2 – Copper Flotation Concentrate Four hundred kilograms of this concentrate, grading 70 g/t gold and 30% copper, was leached in the ILR100. Figure 6 shows the gold and copper leach kinetics and in this case, gold leaching (94%) was a lot faster than copper leaching (45%) due to the presence of some slow leaching copper minerals (eg.


  • US3949051A - Hydrometallurgical process for extracting ...

    A process for extracting copper from a copper-containing concentrate by comminuting the concentrate in the presence of a liquid dispersing agent which inhibits agglomeration and forms a pulp, and leaching the pulp in the presence of a silver catalyst.


  • Copper leaching from nanoparticles of chalcopyrite concentrate

    The leaching of ball-milled samples was completed in a relatively more dilute solution and in shorter leaching times than that of unmilled samples. Ball milling of the concentrate from 0 to 180 minutes led to an increase in the efficiency of copper leaching in a acidic ferric chloride solution from 43 to 86%.


  • 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 ...


  • copper leaching concentrates - retefamiglieaccoglienti.it

    Copper Leaching from Chalcopyrite Concentrates.pdf . The entry of copper giants Phelps Dodge, BHP Billiton, and Codelco indie that at long last real Copper Leaching from Chalcopyrite Concentrates Shijie Wang progress may be made.


  • TACKLING IMPURITIES IN COPPER CONCENTRATES

    during piloting. A novel process for leaching bismuth, without leaching any copper, is also discussed. Finally, selective zinc-only leaching test results from copper concentrate are presented. The deciding factor in the success of a particular approach is highly dependent upon the minerals that contain the impurity of interest.


  • Energy Efficiency & Copper Hydrometallurgy

    Copper Hydrometallurgy Heap/stockpile leaching Early 1900s Iron cementation Early 1900s Direct electrowinning Early 1900s Roasting, leaching, electrowinning 1960-70s SX/EW 1970-80s Enhanced sulfide heap/stockpile leaching 1990-2000s Concentrate pressure leaching 2000s


  • (PDF) A STUDY OF LEACHING OF COPPER OXIDE ORE BY SULPHURIC ...

    A Study of Leaching of Copper Oxide Ore by Sulphuric ... which are separated from the recycled metal in the subsequent leaching step. Finally, copper concentrates are separated from these ...


  • Copper Concentrates - Cargo Handbook - the world's largest ...

    Sulfide ores are moved to a concentrating stage, while oxide ores are routed to leaching tanks. The first commercial copper product, in an increasing chain of added value, is the copper concentrate, which main components are copper, iron and sulfide.


  • Big Guns in Copper Conc Leaching Race - altamet.com.au

    applying bio-technology for copper and molybdenum ores and concentrates. The first project is a US$60 million prototype bio-leaching facility near Chuquicamata, Chile to treat 77,200 t/a concentrate and produce 20,000 tonnes/annum of cathode copper, with a view to building a commercial facility for the nearby Mansa Mina Project.


  • The selective leaching of copper from a gold–copper ...

    The selective leaching of copper from a gold–copper concentrate in glycine solutions E.A. Oraby, J.J. Eksteen⁎ Western Australian School of Mines, Curtin …


  • The selective leaching of copper from a gold–copper ...

    Selective leaching of copper minerals over gold from copper–gold concentrate has been developed in glycine solution in the presence and absence of peroxide. The results obtained from this study can be concluded as follows: 1. Copper can be selectively leached over gold in glycine–peroxide solution.


  • Recover Cobalt & Copper from Sulfide Concentrates

    The supplied concentrate had a 10-fold higher copper concentration than that used in the Noranda research and was similar to that used in the Calera operation. Leaching of this concentrate at 155° C resulted in the formation of the troublesome sulfur balls.


  • Heap leaching - Wikipedia

    In 2011 leaching, both heap leaching and in-situ leaching, produced 3.4 million metric tons of copper, 22 percent of world production. The largest copper heap leach operations are in Chile, Peru, and the southwestern United States. Although heap leaching is a low cost-process, it …


  • Copper Concentrate - an overview | ScienceDirect Topics

    Stirred Tank Bioleaching for Copper Concentrates [19] The use of BIOX technology for the bioleaching of base metal sulfides was demonstrated with respect to copper concentrates. Initial laboratory tests showed that standard mesophilic (40°C) culture was very successful for leaching secondary sulfides but not effective for chalcopyrite, whose ...


  • How Hydrometallurgy and the SX/EW Process Made Copper the ...

    While copper bacterial leaching thus far has been confined to the leaching of ore, pilot plant tests are underway for the leaching of chalcopyrite concentrates that would normally be processed by smelting.


  • Recovery of Cobalt and Copper From Complex Sulfide ...

    copper from complex sulfide concentrates. Processes currently used de­ pend largely upon precipitation techniques to remove impurities and re­ cover cobalt from sulfate liquors prepared by oxidative pressure leaching of the sulfide concentrates. The Bureau conducted bench-scale research on a process for treating cobaltite concentrates. comprising