exploitation chalcopyrite

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Chemical, crystallographic, and electromagnetic variability in
2022.11.1 Natural samples of chalcopyrite in reflected-light petrography, showing a sample of the variety of textures and commonly associated minerals. A: Chalcopyrite
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Synthesis and stability of single-phase chalcopyrite – a
Chalcopyrite forms a stable phase below a certain temperature, which still needs to be determined, but is probably below 550 °C. Hence, we choose 450 °C for solid-state
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Behavior and Kinetics of Copper During Oxygen Pressure
2023.2.15 The results show that in the process of oxygen pressure leaching of complex chalcopyrite the oxidation dissolution of FeS 2 occurs first, and then the sulfuric
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A Review on Novel Techniques for Chalcopyrite
2012.1.1 A detailed review of chalcopyrite deposits, production and consumption, mining, ore processing, steps involved in the pyrometallurgical and hydrometallurgical processing of copper as well as the dissolution
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Systems biology of acidophile biofilms for efficient
2020.7.7 One of the major challenges for further exploitation of industrial biomining is for copper recovery from the refractory mineral
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Research progress on enhancing leaching efficiency of ...
2022.1.5 The traditional method of extracting copper from qualified chalcopyrite mainly adopts pyrometallurgical process. With the continuous exploitation and utilization
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Improving the flotation separation of chalcopyrite from
2022.1.1 With the continuous exploitation of ores, the grade of chalcopyrite and galena has been falling (Liu et al., 2020). Moreover, chalcopyrite often coexists with
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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
2022.9.21 The recovery of chalcopyrite and pyrite was high with low doses of the collector (10 mg/L) at pH = 8. However, this was modified with the addition of TA, where
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A Review on the Research of Hydrometallurgical Leaching of
2022.7.12 The scientific theories and research achievements about the hydrometallurgical leaching process of chalcopyrite are analyzed in this paper, such as
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Flotation performance of chalcopyrite in the presence of an
2022.2.1 In this case, the oxidation of chalcopyrite is enhanced, leading to the production of hydrophilic species such as copper hydroxide (Cu(OH) 2), ferrous
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Improving the flotation separation of chalcopyrite from
2022.1.1 With the continuous exploitation of ores, the grade of chalcopyrite and galena has been falling (Liu et al., 2020). Moreover, chalcopyrite often coexists with galena in natural deposits. Froth flotation is commonly used to enrich and separate chalcopyrite and galena before smelting to improve the comprehensive utilization of copper and lead ...
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Rare and Critical Metals in Pyrite, Chalcopyrite, Magnetite,
2021.6.14 Chalcopyrite hosts bornite, sphalerite, galena, and Bi-sulfosalt inclusions and is enriched with Ag, In, and Ti. Inclusions of wittichenite, tetradymite, and cuprobismutite reflect enrichments of ...
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Trace and minor elements in sphalerite from metamorphosed
2014.8.12 Sphalerite is a common sulphide and is the dominant ore mineral in Zn-Pb sulphide deposits. Precise determination of minor and trace element concentrations in sulphides, including sphalerite, by Laser-Ablation Inductively-Coupled-Plasma Mass-Spectrometry (LA-ICP-MS) is a potentially valuable petrogenetic tool. In this study, LA
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Rare and Critical Metals in Pyrite, Chalcopyrite, Magnetite,
2021.6.14 The Vathi porphyry Cu-Au±Mo deposit is located in the Kilkis ore district, northern Greece. Hydrothermally altered and mineralized samples of latite and quartz monzonite are enriched with numerous rare and critical metals. The present study focuses on the bulk geochemistry and the mineral chemistry of pyrite, chalcopyrite, magnetite,
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Study of the Electrochemical Passive-Active Transition of
2016.7.12 Chalcopyrite (CuFeS 2) as one of the most common copper sulfide minerals provides approximately 70% of the world's copper reserves [1]. However, the low leaching rate of chalcopyrite remains problematic because it prevents the full exploitation of chalcopyrite for its low dissolution rate [2].
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Enhancement mechanism of polyoxyethylene nonyl phenyl
2021.11.1 The exploitation and utilization of high-grade copper-bearing minerals have greatly contributed to the production of copper and the development of industry (You et al., 2020). ... 2020, Yang et al., 2020a). Chalcopyrite is the most abundant naturally occurring copper-bearing mineral. However, a large amount of low-grade chalcopyrite cannot be ...
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Minerals Free Full-Text Accessing Metals from Low-Grade
2022.4.20 This will increase the exploitation of previously underutilized low-grade ores [4,5]. Surprisingly, in the nineteenth and early twentieth centuries, ... Adaptation was achieved in this study by serially increasing chalcopyrite pulp densities from 1% to 5%, and bioleaching experiments were carried out under 5% chalcopyrite conditions. ...
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Exsolution of chalcopyrite from bornite-digenite solid
2018.7.11 Chalcopyrite from Wallaroo Mines, South Australia (South Australian Museum sample G22621), was used as starting material. This chalcopyrite was also used by Zhao et al. and shown to be phase pure and to have an average composition Cu 1.07 Fe 1.05 S 2.2.Following the method of Zhao et al. (), the chalcopyrite was crushed, washed,
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Hypogene enrichment in Miduk porphyry copper ore
2022.11.9 To the depth chalcopyrite is the most common sulphide, and the core of sulphide replacement (parent phase) changed from pyrite to chalcopyrite towards central deeper levels of deposit, resulting ...
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Insights into heap bioleaching of low grade chalcopyrite ores
2012.8.1 The success of heap leaching technique on oxides and secondary sulfides has opened up doors for many field trials for processing of sulfidic ores such as chalcopyrite for future commercial exploitation. Chalcopyrite is an important primary copper mineral (Hu et al., 2002, Wang, 2005) which accounts to 70% of the total copper reserves today ...
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A novel pH-responsive flocculant for efficient ... - ScienceDirect
2023.4.1 Fig. 2 expresses the flocculation results of molybdenite, chalcopyrite and quartz. In the absence of PADD, the molybdenite, chalcopyrite and quartz suspensions had good dispersibility, as shown in tubes 1, 3 and 5 in Fig. 2 (a) and 2(b, d and f) are their fluorescence microscope images, respectively. The three minerals uniformly dispersed
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Assessment of the applicability of a “toolbox” designed
2013.10.3 Exploitation of the Montevecchio–Ingurtosu mineralization was a prime source of Pb and Zn for more than a century. Ore body is a vein system extending in a NNE-SSW direction for at least 12 km. ... veins). At the Ingurtosu Pb–Zn mine, as in other mines of the district, galena and sphalerite were the targets of exploitation. Chalcopyrite and ...
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Prospects of Chalcopyrite-Type Nanocrystals for Energy
2019.5.26 Colloidal chalcopyrite-type nanocrystals M+M3+E2 (M+ = Cu, Ag; M3+ = In, Fe; E = S, Se) are an emerging class of materials used in energy conversion systems, owing to their high absorption coefficients, nontoxicity, and appropriate band gaps. Their properties can be tuned by varying their size and composition, and they are
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Selective Process Route to Recover Magnetite from
2022.12.1 Magnetite pellet feed recovery from chalcopyrite dam copper flotation tailings. Process route comprises scalping screen, low field rougher, and cleaner magnetic separations and silicates reverse cationic flotation as recleaner step. High-quality magnetite pellet feed reaching 68.00 wt% of Fe, 2.13 wt% of SiO2, and 95.1 wt% of magnetite.
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Copper Leaching from Chalcopyrite Concentrates
2017.8.29 increased exploitation of mixed- and lower-grade ores and relatively small isolated deposits, there has been a world-wide upsurge of interest in hydrometal-lurgical processes for the production of copper. Hydrometallurgical processing of chalcopyrite concentrates has received considerable attention over the last three decades.
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exploitation - 搜索词典
n. 1. 剥削；榨取 a situation in which sb treats sb else in an unfair way, especially in order to make money from their work. 2. 利用；开发；开采 the use of land, oil, minerals, etc. 3. （出于私利的）利用 the fact of using a situation in order to get an advantage for yourself.
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Copper and critical metals production from porphyry
2021.7.1 This high copper demand will cause various economic and socio-environmental challenges in the supply chain. First, many major operating copper mines will likely close down even before 2050 due to ore depletion (Table 1).Second, the development of newly discovered deposits takes longer than before due to stricter economic and socio
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Leaching of chalcopyrite and sphalerite using bacteria
2005.11.1 In addition, the exploitation of such microbes would eliminate the need to use standard laboratory cultures, particularly for large-scale studies. The recovery of suitable native microbes from environmental samples, such as sulphide heaps or sulphur-rich coal deposits, presents significant challenges. ... Chalcopyrite leaching rates are ...
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Minerals Free Full-Text Simultaneous Leaching of Seafloor Massive ...
2019.8.10 Simultaneous leaching of seafloor massive sulfides (SMS) from Loki’s Castle on the Arctic Mid-Ocean Ridge (AMOR) and polymetallic nodules (PN) from Clarion Clipperton Zone (CCZ) of the Central Pacific Ocean was studied. Leaching tests were conducted using sulfuric acid and sodium chloride, at a temperature of 80 °C for 48 h
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Analysis of Copper Deposits in Maragwa Location in Tharaka
2022.12.1 The common copper mineral was chalcopyrite minerals with a mean mineral abundant of 5.12. The mean copper composition ranged between 1.76±0.19 and 8.42±1.35, with an average mean of 4.46±0.45 percent. ... The economies of some developed and developing countries are usually supported by the exploitation of these
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Electrochemical Assessment Accounting for the
2015.11.9 other viable alternatives for exploitation, such as polymetallic deposits rich in chalcopyrite (CuFeS 2). On this circumstances chalcopyrite is becoming one of the most commonly mined ores for copper extraction in numerous countries. In the case of Mexico, the chalcopyrite appears predominantly as
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Mineralogical Features of Chalcopyrite and Sphalerite in
2019.7.2 The purposeful formation of man-made deposits is connected with the creation of such conditions under which a waste material acquires preset process properties while stored. This will enable future environmental clean processing of waste. Aiming to determine general mechanisms of formation of process properties in copper-pyrite ore
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A novel synthetic polymer depressant for the flotation
2021.12.15 It is obvious that a great influence on the adsorption capacity of IPETC on chalcopyrite surface at pH 8.0–9.0, was emanant, where the adsorption capacity of IPETC on chalcopyrite surface was still around 0.3 mg/m 2. This showed a slight decrease for chalcopyrite, while for galena, a dramatic drop from about 0.4 mg/m 2 to 0.05 mg/m 2
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Minerals Free Full-Text Glycine/Glutamate:
2022.12.23 Currently, the use of called “green solvents” is a challenge that must be assumed by the industry, since they contribute to a friendly process and where its use has been extended, causing research needs, and recognition of application and analysis of potential new uses. The main objective of this study was to analyze the global scientific
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The recovery of oxide copper minerals from a complex
2017.3.1 The liberation of chalcopyrite and chrysocolla were determined using QEMSCAN. About 29.8% of the chrysocolla and 51.5% of the chalcopyrite were fully liberated. Association data indicated that the chalcopyrite was mostly associated with chrysocolla, viz. 42.9% of the chalcopyrite was associated with chrysocolla and 3.9%
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Selective Adsorption Mechanism of Ferric Ions on the
2023.9.11 When copper ores containing pyrite are crushed and ground, many unavoidable Fe3+ ions will be produced and enter the flotation process. At present, the adsorption mechanism of Fe3+ on chalcopyrite and pyrite surfaces is not clear. Here, the adsorption behaviors of Fe3+ on the surfaces of chalcopyrite and pyrite were
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Metals Free Full-Text Gangues and Clays Minerals as Rate
2021.9.27 According to Toro et al. [], copper mining is an industry that is in constant growth, and approximately 25 million tons are produced annually worldwide [].Among the copper minerals on the planet, the vast majority correspond to sulfide ores [].Within these copper minerals, chalcopyrite stands out as the most abundant, representing 70% of all
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Electrochemical mechanism and flotation of chalcopyrite and
2020.4.1 Chalcopyrite and galena are usually associated in natural ore deposits. With the rapid decrease of high grade and large disseminated copperâˆ’lead ores owing to growing exploitation and usage, utilizing low-grade and complicatedly disseminated copperâˆ’lead ores is a promising option but poses a difficult task in mineral processing ...
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Systems biology of acidophile biofilms for efficient metal
2020.7.7 One of the major challenges for further exploitation of industrial biomining is for copper recovery from the refractory mineral chalcopyrite (CuFeS 2), the largest reserve of copper containing ...
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Minerals Free Full-Text Sulfide Breccias from the Semenov-3 ... - MDPI
2018.7.27 The aim of this paper is the investigation of the role of diagenesis in the transformation of clastic sulfide sediments such as sulfide breccias from the Semenov-3 hydrothermal field (Mid-Atlantic Ridge). The breccias are composed of marcasite–pyrite clasts enclosed in a barite–sulfide–quartz matrix. Primary hydrothermal sulfides occur as
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