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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 …
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-
• 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 ...
Owing to the commodity nature of bulk metals, conversion cost is the key determining factor for industrial feasibility. Using the Hall–Héroult process as a benchmark for the commodity production of metal by electrolysis, Allanore [19] provides metrics that a hypothetical electrolytic cell must achieve for industrial copper production.Current …
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 ...
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 …
1. Introduction1.1. Background to chalcopyrite leaching. The objective of this research was to evaluate a proposed conceptual flowsheet for the leaching of chalcopyrite using aqueous glycine in an alkaline environment with a suitable oxidant, and to identify potentially feasible routes for copper recovery from such a pregnant leach solution with …
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.
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 ...
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 ...
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 …
chalcopyrite mass, and x 0 is the copper content in the deep-depressing chalcopyrite. Fig. 1. XRD spectrum of the chalcopyrite. Table I. Chemical composition of the chalcopyrite (wt.%) Cu Fe S LOIa Purity 32.41 29.96 34.02 6.25 93.75 aLoss on ignition. Recovery of Copper from Cyanidation Tailing by Flotation 549
The new-type tailing dump of copper-pyrite ore concentrator contains basic minerals: up to 1% of pyrite and chalcopyrite; up to 2% of sphaleriite, minor amount of galena, …
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 …
S 2p XPS spectra from mineral surfaces on the tailing consisting of 96% pyrite and 4% chalcopyrite from the cleaner flotation of chalcopyrite mixed with pyrite. …
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, …
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 …
Table 4 shows that the resting potential of pyrite (0.22 V) is greater than the reversible potential of ... Robles P., Leiva W.H., Jeldres R.I., Cisternas L.A. Partial Seawater Desalination Treatment for Improving Chalcopyrite Floatability and Tailing Flocculation with Clay Content. Miner. Eng. 2020; 151:106307. doi: 10.1016/j.mineng ...
The Cu/S mass ratio is 1.70 being an indicator of existing bornite (Cu 5 FeS 4 with Cu/S = 2.48) and chalcocite (Cu 2 S with Cu/S = 3.96) minerals in the composition together with chalcopyrite (CuFeS 2), which Cu/S is 1.14. The true density of copper tailing was 3.462 g/cm 3. Size distribution. Table 3 presents size distribution of copper …
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 …
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.
It was shown in Table 2 that nearly 99% of the cyanidation tailing was less than 74 μm, indicating that the tailing was already very fine and there was no need to further grind it. Besides, Cu, Pb and Zn distributed relatively equally among different size fractions with similar grades. What is more, there were 78.66% of Cu, 80.95% of Pb, and …
Research on chalcopyrite leaching represents a great challenge, given its importance as one of the most abundant copper minerals and its significant role in global copper extraction. This study aimed to evaluate the effects of different parameters on chalcopyrite leaching by hydrogen peroxide as a strong oxidizing reagent in sulfuric …
A process for concentration of Cu from a Cu mine tailing by flotation has been investigated in this study. The flotation studies were carried out under varying conditions of pH (3.5~12), flotation ...
Copper extraction along with electricity generation from the low-grade chalcopyrite was achieved in the column bioleaching process assisted by MFCs. Results showed that after 197 days bioleaching of low-grade chalcopyrite, 423.9 mg copper was extracted from 200 g low-grade chalcopyrite and the average coulomb production …
In this paper, a copper tailing was studied through the chemical analysis method, X-ray diffraction and scanning electron microscope-energy dispersive spectrum. …
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
Chalcopyrite is the main mineral source of copper ore for extracting and producing copper. However, with the continuous mining of copper ore, the grade of …
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 ...
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 ...
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 …
Apart from the proposal of novel methods (discussed in the above section), much research has also been recently devoted to improve the rate of chalcopyrite dissolution using certain additives in bioleaching. Table 2 present a list of few additives that have been proposed for enhancing bioleaching kinetics using both meso-and/or thermo …
Table S2 (Supplementary Material) lists the atomic proportion of the main elements (C 1 s, N 1 s, S 2p and Cu 2p) of the chalcopyrite before and after adsorption with MDPE, and Fig. 9 displays the XPS survey spectra of chalcopyrite (a) and MDPE-chalcopyrite (b). The results showed an increase in the proportion of C and N elements …
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 …
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 …