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This paper describes a study aiming at producing a magnetite pellet feed as a by-product from a dam chalcopyrite flotation tailings and generating free magnetite non-magnetic rougher tailings. ... Table 3 shows the results of scalping ... Guibal E (2019) Integrated treatment of tailing material for the selective recovery of uranium, rare earth ...
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chalcopyrite was examined in chloride and sulphate solution by JONES [20]. The leaching of chalcopyrite with Fe2(SO4)3 is under mixed control; the leaching of chalcopyrite with CuCl2 or FeCl3 is under anodic control. Since the 2000s, HIROYOSHI et al [21–24] found that coexisting Cu2+ and Fe2+ accelerated chalcopyrite leaching at
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In this paper, the effect of the cupric and chloride ions concentrations on copper dissolution from chalcopyrite concentrate was studied in acidified media. Variables included three different concentrations of Cu2+ (0.5, 1.5, and 2.5 g L−1), four different concentrations of Cl− (0, 5, 7, and 10 g L−1), two different pH values of 1 and 2, and a …
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1.2. Chalcopyrite Ore Production The sulfide ore minerals including chalcopyrite (CuFeS 2), sphalerite (ZnS), galena (PbS) provide the major sources of the world's base metals (Cu, Zn, Pb, respectively), whereas pyrite is virtually ubiquitous as a metalliferous mineral in sulfide ore deposits (Crang and Vanghan, 1994).The first step in …
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Figure 1. Variations of (A) cell density and (B) pH during chalcopyrite bioleaching at 6°C. MHJ, bioleaching by the mixed culture. H 2 SO 4 (9.2 M) was added to the leaching solution to maintain the pH at ∼2.5 from day 4 to 16 for the bioleaching systems, and from day 4 to 20 for the abiotic control. For each bioleaching system, a …
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The cleaner concentrate transfers to the recleaner and its tailing transfers to the scavenger. The recleaner tailing returns to the cleaner and its concentrate is actually the final product of a circuit. ... (average value from Table 6) from a low-grade chalcopyrite ore. The economic viability however, should be assessed by looking into the ...
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Table 1 Chemical compositions of chalcopyrite, serpentine and talc (mass fraction, %) by XRF analysis. Full size table. Table 2 Contents of main elements by chemical analysis for Copper-Nickel ...
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Copper is one of the most important base metals and is widely used in industry. In the Earth's crust, copper is most often present in the form of copper–iron-sulfide and copper sulfide, such as the minerals …
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• Magnetite pellet feed recovery from chalcopyrite dam copper otation tailings. • Process route comprises scalping screen, low eld rougher, and cleaner magnetic separations and silicates reverse cationic ... Table 1. Table 1 Analytical procedures for chemical assays Element Analytical methodology Al, Fe, Mn, P, and Si Calcination at 1000 ...
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DOI: 10.1016/J.CJCHE.2018.02.014 Corpus ID: 104262748; Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate @article{L2018SeparationOC, title={Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate}, author={Cui-cui L{"u} and Yongliang Wang and Peng Qian and Ya Liu and Guoyan Fu …
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Table 2 shows the recovery and grade results of chalcopyrite in the concentrate and tailing. According to Table 2, the chalcopyrite recovery of the concentrate exceeded 92.17%, but the grade of concentrate was only 16.08% without the addition of a depressant. When 20 mg/L of pullulan was used, the copper grade of the flotation froth …
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In this paper, a copper tailing was studied through the chemical analysis method, X-ray diffraction and scanning electron microscope-energy dispersive spectrum. …
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Partial seawater desalination treatment for improving chalcopyrite floatability and tailing flocculation with clay content. Author links open overlay ... and systems with clay content. This situation can also be appreciated in the kinetic parameters (see Table 3), where the chalcopyrite flotation in a clay-free system using seawater at pH 11 ...
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The chalcopyrite concentrate sample was crushed, ground below 200 mesh (74 µm), and then a chemical analysis of the sample was carried out. The tri-chloro-ethylene (C 2 HCl 3) (TCE) used as a surfactant was obtained from Merk, Germany.Double distilled water was used throughout the experimental work.
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accumulated tailing reserves into production along with natural ores in order to support the current and long-term increased non-ferrous metal production rates, preserving the nature balance. Most tailing dumps which reserves are close to those of natural mineral ore deposits are classified as man-
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In this work, the interactions between one sample of silver-bearing tailing (223 g/t silver) and chalcopyrite during bioleaching by mixed moderately thermophilic culture were investigated.Bioleaching results showed that copper can be almost totally extracted from chalcopyrite as the result of addition of the silver-bearing tailing, and …
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It turned out that chalcopyrite (Cu) and pyrite (S) was the main recoverable minerals in the tailing. In order to separate chalcopyrite from pyrite in low pulp pH, ammonuim humate (AH) was singled ...
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In this study, the selective galena depression mechanism of tea polyphenol (TP) was investigated in chalcopyrite flotation. The feasibility of using TP as a galena depressant was studied through flotation experiments, and the depressant mechanism of TP on galena was analyzed using contact angle measurements, zeta potential …
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Tailing, in context to mining, is defined as the waste or non-economic by-product generated during mining activities, processing of minerals, and other materials that contain small amounts of residual valuable minerals, chemicals, water, and heavy metals (Adiansyah et al. 2015).Studies indicated that the process of mineral exploitation and …
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Pyrite and chalcopyrite common, but chalcopyrite proportion higher than normal possibly because of pyrite dissolution; no pyrrhotite or sphalerite: 7: ... In the rainy season, arsenic was mobilized when the water table rose to the tailing waste (Rodríguez et al., 2004). The distribution of arsenic during mobilization exhibited spatial and ...
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The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to …
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During the chalcopyrite leaching by sodium nitrate and sulfuric acid solution, leaching rate decreases with increasing the time and a part of chalcopyrite mineral grains remains in the leach residue.
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To date, chalcopyrite is the commonest examined copper ore due to its inertness and global abundance indexes. Out of between 150 and 180 global copper ores, chalcopyrite is the most stabilized copper ore, due to its structural configuration [1, 2].It is mostly found in association with pyrite (FeS 2), bornite (Cu 5 FeS 4), sphalerite (ZnS), chalcocite (Cu 2 …
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On the other hand, the floatability of pyrite tends to improve in the presence of other sulphides (Trahar, 1983).During the galvanic interaction between chalcopyrite and pyrite, the oxidation of chalcopyrite releases cupric (Cu 2+) ions.These Cu 2+ ions can be reduced to cuprous (Cu +) ions at reducing Eh with the oxidation of sulphur species of …
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In general, the PIC wastes contain below 0.3% pyrite and 0.6% chalcopyrite (Table A3 of Supplementary material), which supports the findings of the sequential extraction. ... However, the mineral processing of the carbonatites to concentrate Cu sulphide minerals, including chalcopyrite, has produced a tailing (East tailing) rich in …
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Refering to Table 3 and Fig. 3 a, ... Minor carrollite, chalcopyrite, chalcocite and bornite are present in unweathered fragments. ... dumping and tailing, has called on the society to find ways ...
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The chalcopyrite in the cyanide tailings investigated herein was fine with a porous surface. ... cyanide tailing; interface behavior; chalcopyrite; ... Figure 15 shows the failure mode of the ...
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A preliminary test was made to float sphalerite from a copper rougher tailing by activating it with copper sulfate (CuSO4 5H2 O). 36 TABLE II Results of collectorless flotation tests conducted on Texasgulf Type-A ore at pH 8.8 and 6.6 using 0.84 kg/ton of Na2S Test TA-1, pH 8.8 Products Weight Assays (%) Distribution (%) (%) Cu Zn Cu Zn …
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From Table 4, the highest recovery of 81% of copper with 2% grade is obtained at wash water flow rate 6.5 lpm with 3.9° deck angle, along with 61.41% separation efficiency (Table 5) which is the highest among all the 16 tests. But the grade and recovery of silica in this concentrate are quite high and hence not considered as …
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Two mine soil samples show similar metal and As content to the upper tailing samples. The other two were agricultural soil samples, showing significantly lower metal and As content, but higher Hg and Pb contents than the local background sample (blank in Table 4), collected from an agricultural soil 4.5 km to the south-east. However, …
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