In situ recovery of copper sulfide ores: Alternative process schemes
However, copper sulfide ores are normally located at greater depths and within a more consolidated rock, then its recovery by ISR will very likely require some type of pre-treatment of the rock for permeability improvement. Main options suggested for permeability stimulation technologies include hydraulic fracturing (up to 100 MPa), …
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Copper processing
The flotation concentrate is then dewatered and filtered to produce a filter cake that is sent to a copper smelter. Copper processing - Ores, Refining, Smelting: Principal forms in which copper ores are found …
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Copper Ore Types: Sulfides versus Oxides | Nasdaq
There are two main copper ore types of interest, copper oxide ores and copper sulfide ores. Both ore types can be economically mined, however, the most …
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Copper Sulfide Ore
The common route for turning copper sulfide ores into metal is high temperature oxidation of sulfides to produce an impure liquid copper. This is cast into slab-like anodes. …
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Re-inoculated Bacteria Driving Microbial Community
Copper is widely used in industries including construction, electricity, and communication due to its good ductility, and electric and thermal conductivity [].Low-grade copper sulfide ores, one of the main copper-bearing ores, accounts for great proportion of copper reserves [].With the increasing copper demand and continuous exhaustion of …
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Handbook of Flotation Reagents | ScienceDirect
In the treatment of massive sulfide copper–zinc ores, the reagent scheme and flowsheet varies by region, where in various plants around the world different techniques are developed. For example, in Russian operations, a bulk flotation method is practiced. In the past decades, significant progress has been made in the improvement of ...
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Treatment of Mixed Sulfide Oxide Ores of Copper
Many of our largest copper deposits contain both sulfide and oxidized copper minerals. The large porphyry mines, with a total copper content of from 1.3 to 2.0 per cent., send to their mills ore with an oxide content of from 0.2 to 0.4 per cent. While the recoveries of the sulfide minerals are considered satisfactory, using modern flotation ...
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Bioleaching of low-grade copper sulfide ores by
The grown conditions of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans were investigated, and then experiments were conducted to research the bioleaching behaviors of crude ore of copper sulfide and hand-picked concentrates of chalcopyrite by Acidithiobacillus ferrooxidans and Acidithiobacillus …
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(PDF) Banded Sulfide–Magnetite Ores of Mauk Copper Massive Sulfide
The results of investigation of metamorphosed sulfide–magnetite ores from the Mauk deposit located within the Main Ural Fault at the junction of Tagil and Magnitogorsk massive sulfide zones are ...
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Copper recovery from low-grade copper sulfides using …
Low grade copper sulfide ores are obtained from a copper mine, Fujian Province, China, which contain 0.04% free copper oxide, 0.06% primary copper sulfide, 0.64% secondary copper sulfide and 0.01% combined copper oxide. The Cu grade is 0.75%, and most copper are found in chalcopyrite, enargite and chalcocite according to …
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EXTRACTING METALS FROM SULFIDE ORES
Many important metals are present in nature combined with sulfur as metal sulfides; these include cadmium, cobalt, copper, lead, molybdenum, nickel, silver, and zinc. In addition, gold and platinum group metals are …
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A fresh approach to sulfide ores
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 …
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Copper Production: How Is Copper Made?
Manufacturing Process of Copper. Copper processing is a complex process that involves many steps as the manufacturer processes the ore from its raw, mined state into a purified form for use in many industries. Copper is typically extracted from oxide and sulfide ores that contain between 0.5 and 2.0% copper.
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The Challenges and Prospects of Recovering Fine Copper …
The copper concentrates from sulfide ores are usually produced by flotation and then processed by pyrometallurgical or hydrometallurgical methods to extract the copper [3,9,10]. Froth flotation is widely used to separate sulfide minerals from gangue minerals such as quartz (SiO 2 ), based on the surface properties of minerals.
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Copper Statistics and Information | U.S. Geological Survey
Copper is usually found in nature in association with sulfur. Pure copper metal is generally produced from a multistage process, beginning with the mining and concentrating of low-grade ores containing copper sulfide minerals, and followed by smelting and electrolytic refining to produce a pure copper cathode.
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Application of Sulfide Copper Ores Oxidizing Roasting
Sulfide ores and concentrates are treated predominantly by autogenic melting methods to matte [1,2,3,4].The achievements of this technology are: implementation of the energy potential of mineral raw material; a combination of oxidation firing and melting processes; an increase in valuable metal content in matte; a reduction in the scale of …
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Leaching of a low-grade, copper–nickel sulfide ore. 1. Key …
This study was prompted by the disparate recoveries of nickel (>. 70%) and copper (< 20%) from a test heap of copper–nickel sulfide ore after about 200 days of leaching. Variables tested in bioleaching columns charged with a pyrrhotite-rich, chalcopyrite and pentlandite ore were acid pre-conditioning, inoculation and aeration.
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Metallic Sulfide Mining | Sierra Club
Metallic sulfide mining — also known as hard rock mining — involves extracting valuable metals, like copper or zinc, from sulfide ores, which are rocks and sediments that contain minerals bonded with sulfur ions. To reach these ores, miners deplete the area's groundwater by pumping it out and then excavate the site using drilling and ...
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Analysis of Oxidation of Sulfide Minerals in Copper–Nickel
Abstract. The oxidation-induced alteration of properties of sulfide minerals is analyzed. The air-and-gas content and thermodynamic parameters of mine air are experimentally investigated as a case-study of blind roadways in sulfide deposits at a depth of 300–1500 m. The microclimate conditions of sulfide ore oxidation are determined and …
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Copper Ore Types: Sulfides vs. Oxides
Copper sulfide ores are typically the most profitable copper ore type to mine. That is because they have high copper content, and the copper in them can more easily be separated from...
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Sulfide Ore
If sulfide ores containing iron and copper are to be smelted, an understanding of both the iron and the copper systems is needed. Again, as in Figure 2.1.3 for the Cu–S–O system, the calculations are limited to oxidation by industrial oxygen so that the pressure of SO 2 will be about 1 atm., except where oxygen pressure is appreciable near ...
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The bioleaching of sulphide minerals with emphasis on copper …
The most successful copper heap leaching operations have been those processing copper oxides and secondary copper sulphides (Table 1).Chalcocite (Cu 2 S) is the main copper sulphide mineral mined at bioleaching operations. Some of the chalcocite heap operations began as oxide (chemical) leach operations and were converted to …
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Dissolution kinetics and solubilities of copper
Therefore, differentiating between hypogene and supergene sulfide minerals in porphyry copper ores is crucial for resource estimation, downstream mineral processing and metallurgical extraction, as well as accurate assessment of potential environmental impacts. Our goal is to develop a cost-effective sulfide quantification alternative that ...
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12.3: Metals and Ores
Metal ores are generally oxides, sulfides, silicates (Table 12.3.1 12.3. 1) or "native" metals (such as native copper) that are not commonly concentrated in the Earth's crust, or "noble" metals (not usually forming compounds) such as gold (Figure 12.3.1 12.3. 1 ). The ores must be processed to extract the metals of interest from the waste rock ...
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Current Status of Copper-Ore Processing: A …
The amount of copper in copper sand-stones and slates varies from 1 to 6%, in sulfide cop-per-nickel ores from 1.1 to 4.9%, in copper-pyrite ores from 0.1 to 3%, and in copper …
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Copper Ore Types: Sulfides versus Oxides | Nasdaq
There are two main copper ore types of interest, copper oxide ores and copper sulfide ores. Both ore types can be economically mined, however, the most common source of copper ore is the sulfide ...
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Selective Extraction of Cobalt and Copper From Cobalt …
The ore could be considered as typical cobalt-rich copper sulfide ores. Subsequently, the feasibility of the process was verified by thermodynamic calculation and by conducting a series of experiments. Under optimal conditions, the extraction of cobalt and copper reached 86.2 and 95.9 pct, respectively.
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The Challenges and Prospects of Recovering Fine …
The major copper sulfide ores include chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4), covellite (CuS), and chalcocite (Cu 2 S). The copper concentrates from sulfide ores are usually produced by flotation …
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Mineralogy of Sulfides | Elements | GeoScienceWorld
Pyrite is the dominant sulfide in porphyry copper deposits, though it is chalcopyrite that is the most important ore mineral, along with bornite and various binary copper sulfides. ... sphalerite and galena are found in predominantly sedimentary sequences. Sulfide ores in volcano-sedimentary sequences, such as those associated …
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Current Status of Copper-Ore Processing: A Review
The ores of sulfide copper-nickel, copper-pyrite deposits, and ores of copper sandstones and slates are primarily pro-cessed abroad. The amount of copper in copper sand-stones and slates varies from 1 to 6%, in sulfide cop-per-nickel ores from 1.1 to 4.9%, in copper-pyrite ores from 0.1 to 3%, and in copper-porphyry ores from 0.4 to 1.2%.
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