extraction of copper from non sulfide ores

  • US5316567A Hydrometallurgical copper extraction process

    A process for the extraction of copper from a sulphide copper ore or concentrate comprises the steps of subjecting the ore or concentrate to agitation leaching at an Oxide ores on the other hand, do not concentrate easily and therefore it is difficult to provide a feed material that is sufficiently high grade for smelting.

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  • Copper Mining and Extraction Sulfide Ores

    The main ores of copper are sulfides and oxides. From their chemical formulas you can calculate the percentage of copper in each mineral. However this is not the same as the percentage of copper in the ore as that also contains unwanted silies and other minerals, called gangue, that will have to be separated.

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  • Treatment of Mixed Sulfide Oxide Ores of Copper 911 Metallurgist

    Mar 18, 2017 Beside the ores containing copper mainly as sulfide, with a small amount of oxidized copper, many of the large porphyry mines have oxide orebodies, in which the proportion of nonsulfide minerals is so high that present methods of treatment are inefficient. In some of the wellknown orebodies in the 

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  • IN SITU RECOVERY OF COPPER FROM SULFIDE ORE BODIES

    70 to 80 percent of the copper was extracted in 7 days from ore crushed to Dilute sulfuric acid solution alone is not an effective solvent for copper sulfide minerals the oxide minerals. The slowness with which sulfide minerals dissolve must be seriously considered in assessing the feasibility of underground fracturing.

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  • Minerals Free FullText Review of Biohydrometallurgical Metals

    Dec 24, 2014 Not surprisingly, the main focus of these studies was on microbial iron(II) oxidation and reduced inorganic sulfur compound (RISC) oxidation, the two key microbial capabilities for metals extraction. At the same time, the possible exploitation of heterotrophic microorganisms in the leaching of oxidised silie 

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  • copper extraction and purifiion Chemguide

    COPPER. This page looks at the extraction of copper from its ores, its purifiion by electrolysis, and some of its uses. Before you get too bogged down in the extraction of copper, make sure that you need it for Copper can be extracted from nonsulphide ores by a different process involving three separate stages:.

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  • Copper production & environmental impact GreenSpec

    "We are at a time where putting two or three megamines into production does not even keep up with demand of almost 1Mt per year growth "(Gianni Kovacevic Smelting and Extraction. Sulfide Ore. The dried copper concentrates are sent to the smelting operation where it is reduced and melted in several operations.

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  • Copper Ore Types: Sulfides vs. Oxides Investing News Network

    Apr 10, 2018 As mentioned, copper oxide ores are not as attractive an exploration target as copper sulfide ores due to their lower grade. However, in The copper sulfate solution (called the pregnant leach solution) is then stripped of copper via a solvent extraction and electrowinning (SXEW) process. Alternatively, the 

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  • Bacterial consortium for copper extraction from sulphide ore

    Oct 30, 2013 However, even if bacterial activity is not facilitated, microbial assisted air oxidation of iron (II) and sulphur will contribute to copper extraction if sulphide minerals are present in a heap (Watling, 2006). Thus, is important to know whether, for a given process and mineral, if there is one ideal combination of 

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  • Copper Mining and Extraction Sulfide Ores

    The main ores of copper are sulfides and oxides. From their chemical formulas you can calculate the percentage of copper in each mineral. However this is not the same as the percentage of copper in the ore as that also contains unwanted silies and other minerals, called gangue, that will have to be separated.

    >>READ
  • Copper Extraction Handheld XRF appliions review Bruker

    Although these are popular in many different markets and have their own uses, pure copper is still a vital part of multiple industries including but not limited to markets that require electrical wiring. Since there are two types of copper ore: sulfide ores and oxide ores, different techniques are used for copper extraction.

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  • sulfide ores an overview ScienceDirect Topics

    Extraction of Nickel and Cobalt from Sulphide Ores . Unlike mineral sulfide ores, iron ore does not provide an energy source (e.g., ferrous and sulfur compounds) for the oxidative growth of bioleaching microorganisms however, ironreducing bacteria, which gain energy by the dissimilatory reduction of ferric iron to ferrous 

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  • WO2013163712A1 Sulfide ore leaching process Google Patents

    2005 XPS characterisation of chalcopyrite chemically and bioleached at high and low redox potential. Watling 2008 The bioleaching of nickelcopper sulfides. Gupta 2017 Hydrometallurgy in Extraction Processes, Volume II. Lu et al. 2000 The effect of chloride ions on the dissolution 

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  • Copper Mining and Processing: Processing of Copper Ores

    When it is economically feasible, a mine may extract both types of copper minerals when it is not possible, mines will only process either the copper oxides or the copper sulfides. The first steps of copper processing are the same for both ores: mining and transporting. Copper mining is usually performed using openpit 

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  • Gold and Copper Processing Methods for Wikinvest

    Gold is extracted from naturallyoxidized ores by either heap leaching or milling, depending on the amount of gold contained in the ore, the amenability of the ore Gold contained in ores that are not naturally oxidized can be directly milled if the gold is amenable to cyanidation, generally known as free milling sulfide ores.

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  • Electrochemistry of Molten Sulfides: Copper Extraction from BaSCu2S

    Dec 31, 2015 The conventional chemical principle underlying metal extraction from such ore (smelting) is the selective oxidation of sulfide ions (S2−) by oxygen. At 1106°C, more than 20°C above copper melting point, reaction 2 is not spontaneous (ΔrG° = 90.5 kJ.mol−1) and would require a minimum amount of 

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  • extraction of metals from sulphide ores by wet methods

    method of extracting copper metal from ore. By midcentury the rapidly expanding concepts of dissolution of the sulphides of such metals as nickel, copper, cobalt, lead, zinc, antimony, or molybdenum, the . of sulphide sulphur to So,or to some other mechanism, has not yet been established. About all that can be said is 

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  • copper processing Definition, History, & Facts Britannica

    In cases where the next step is leaching (most frequently in the case of oxide ores), complete liberation of the copper minerals is not always necessary the ore needs to be crushed and ground only to the extent required to expose the surface of the minerals to the leaching agent. For sulfide ores, on the other hand, selective 

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  • The cuprex metal extraction process: Recovering copper from

    The Cuprex™ metal extraction process produces hodegrade copper using a hydrometallurgical process based on chloride leaching of sulfide ore concentrates. The process incorporates several novel These keywords were added by machine and not by the authors. This process is experimental and the keywords 

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  • Treatment of Mixed Sulfide Oxide Ores of Copper 911 Metallurgist

    Mar 18, 2017 Beside the ores containing copper mainly as sulfide, with a small amount of oxidized copper, many of the large porphyry mines have oxide orebodies, in which the proportion of nonsulfide minerals is so high that present methods of treatment are inefficient. In some of the wellknown orebodies in the 

    >>READ
  • Copper sulfide ore value chain Outotec

    Extract maximum value with minimum environmental impact when processing sulfide copper ores. We understand the intrie challenges and have the expertise and experience to design and optimize solutions to suit your specific ore type and – from complete concentrator plants to specific equipment. Using our partial 

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  • Copper extraction Wikipedia

    These ores are a mixture of copper carbonate, sulfate, phosphate, and oxide minerals and secondary sulfide minerals, dominantly chalcocite but in native copper minerals are refractory to treatment with sulfuric acid leaching on all practicable time scales, and the dense metal particles do not 

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  • Recovery of Cu and Zn from Complex Sulphide Ore IOPscience

    IOP Conference Series: Materials Science and Engineering. OPEN ACCESS. Recovery of Cu and Zn from Complex Sulphide. Ore. To cite this article: Trinath (PbS), these ores do not allow the recovery of metal by direct chemical leaching due to their low The driving force for the reactions involved in metal extraction.

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  • Methods of Processing of the GoldContaining Refractory Sulfide

    Alternative methods of processing the refractory goldsulfide ores and concentrates to lack of efficient technologies they are not being processed and hydrometallurgical processing of the copperzinc concentrate enriched by precious metals also con tains 1416g/t gold and 1820g/t silver. For extraction of these metals 

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  • The Extraction of Copper Chemistry LibreTexts

    Copper can be extracted from nonsulfide 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 sulfuric acid to produce a very dilute copper(II) sulfate solution.

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  • Innovations: Introduction to Copper: Mining & Extraction

    Sulfide ores are not efficiently attacked by sulfuric acid, but they can be leached if first oxidized by long exposure to the atmosphere and by contact with naturally occurring Thiobacillus Thiooxidans and Thiobacillus Ferrooxidans bacteria. A simple infographic about the mining and extraction of copper was published in the 

    >>READ
  • Copper Ore Types: Sulfides vs. Oxides Investing News Network

    Apr 10, 2018 As mentioned, copper oxide ores are not as attractive an exploration target as copper sulfide ores due to their lower grade. However, in The copper sulfate solution (called the pregnant leach solution) is then stripped of copper via a solvent extraction and electrowinning (SXEW) process. Alternatively, the 

    >>READ
  • sulfide ores an overview ScienceDirect Topics

    Extraction of Nickel and Cobalt from Sulphide Ores . Unlike mineral sulfide ores, iron ore does not provide an energy source (e.g., ferrous and sulfur compounds) for the oxidative growth of bioleaching microorganisms however, ironreducing bacteria, which gain energy by the dissimilatory reduction of ferric iron to ferrous 

    >>READ
  • Copper extraction Wikipedia

    These ores are a mixture of copper carbonate, sulfate, phosphate, and oxide minerals and secondary sulfide minerals, dominantly chalcocite but in native copper minerals are refractory to treatment with sulfuric acid leaching on all practicable time scales, and the dense metal particles do not 

    >>READ
  • Innovations: Introduction to Copper: Mining & Extraction

    Sulfide ores are not efficiently attacked by sulfuric acid, but they can be leached if first oxidized by long exposure to the atmosphere and by contact with naturally occurring Thiobacillus Thiooxidans and Thiobacillus Ferrooxidans bacteria. A simple infographic about the mining and extraction of copper was published in the 

    >>READ
  • copper extraction and purifiion Chemguide

    COPPER. This page looks at the extraction of copper from its ores, its purifiion by electrolysis, and some of its uses. Before you get too bogged down in the extraction of copper, make sure that you need it for Copper can be extracted from nonsulphide ores by a different process involving three separate stages:.

    >>READ
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