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 ...
Recovery of Copper from Cyanidation Tailing by Flotation TINGSHENG QIU,1,2 XIONG HUANG,2 and XIULI YANG1,2,3 1.—Jiangxi Key Laboratory of Mining …
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 …
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 …
Pure crystals of pyrite and chalcopyrite samples used in this investigation were received from Yunfu, Guangdong Province, China. The X-ray fluorescence (XRF) and X-ray diffraction (XRD) analysis, shown in Table 1 and Fig. 1, respectively, were carried out to confirm the purity of the minerals.The mineral samples were carefully handpicked, …
It is expected that at least a 100 million tonnes of low-grade run of mine ore, mostly chalcopyrite with the average analysis presented in Table 1, is available (rough estimate) at the waste dump areas at Sarcheshmeh mine, Kerman, Iran. For this amount, and with the treatment of 3000,000 t/year, 33 years of operation, in minimum, seems …
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 …
High-molecular-weight polymers based on anionic polyacrylamides (PAMs) are used as tailing flocculants in mineral processing plants. The recirculation of water recovered from the tailing thickeners to the flotation process introduces residual PAMs, which can impact the flotation of important copper sulfides like chalcopyrite, bornite, …
We report the investigation of a chalcopyrite leaching process that implements millimeter-sized glass beads that are stirred in the leach reactor to combine particle grinding, mechanical activation, and surface removal …
The chalcopyrite tailing dumps were studied in the zonal series from the forest‐ steppe to southern steppe. These were the dumps of open-cut mines of the Uchalinskii Mining and Ore-Processing ...
Download Table | Chalcopyrite content remaining in depth solid samples of tailings from publication: Characterisation of the Sarcheshmeh copper mine tailings, Kerman province, southeast of Iran ...
The main reasons for the above results are as follows: (1) Cu and S on the chalcopyrite surface are the reaction sites that mainly react with CN –; (2) the ferricyanide complexes are not easily attached to the chalcopyrite surface. Table 4 shows the stability constants of copper and iron-containing cyanide complex. The results indicate that ...
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
Chalcopyrite, sphalerite and pyrite used in the tests were all from a copper mine in Yunnan Province. The minerals were sorted by hand, crushed, ground and separated. The obtained samples were dried at the temperature of 35-40℃ for flotation. The chemical and phase composition of minerals were shown in Fig. 1 and Table 1, …
The mineralogical phase analysis of the ore samples was carried out by a polarizing microscope and the results are shown in Fig. 1 and Table 2.The content of sulphide minerals in the ore is about 2.7%, gangue minerals are about 95%, mainly quartz, feldspar, biotite, chlorite, etc. Chalcopyrite (CuFeS 2) is the most important metal …
The grinding fineness (defined as mass fraction of particles percentage below 74 μm) was influential in the liberation degree of chalcopyrite from pyrite, which affected …
Most copper minerals are found as sulfides, with chalcopyrite being the most abundant. However; this ore is refractory to conventional hydrometallurgical methods, so it has been historically …
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 …
where ( x ) is the copper recovery, ( m_{1} ) is the froth product mass, ( x_{1} ) is the copper content in the mineralized froths product, ( m_{0} ) is the depressed chalcopyrite mass, and ( x_{0} ) is the copper content in the deep-depressing chalcopyrite.. Analysis. To examine phase of single mineral, the sample was analyzed …
The trace elements data are variable in the tailing soil than in the crustal background soil. According to ICP-EOS data, the surveyed sites show increased Cu content, pH values of 1.9–5.3 and EC values of 43–679 mS/m, indicating soil contamination. ... Tables, images, charts, graphs, and figures ... mainly pyrrhotite, pyrite, chalcopyrite ...
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 …
1. Introduction. As an important metal raw material, copper is widely used in the fields of daily necessities, industries, and national defenses (Schipper et al., 2018).Chalcopyrite (CuFeS 2) is the primary source of commercial copper metal and it is often associated with pyrite in ore deposits (Ignatkina et al., 2018).In order to obtain high …
Bioleaching of sulfidic tailings (chalcopyrite as chief Cu mineral) in an Iranian mine using moderate thermophiles reached 55% Cu and 59.5% Co extraction after 30 …
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 ...
To ensure the feasibility of the reagent scheme of calcium ions/pullulan, the flotation tests of artificial mixed chalcopyrite and talc (1:1 of the mass ratio) were carried …
Table 2 shows the flotation recovery of chalcopyrite and pyrite in concentrate and tailing after mixed flotation. As presented in Table 2, the flotation recovery of chalcopyrite in froth product was about 73%, whereas that of pyrite was less than 27%. Compared with the flotation results without adding starch, starch in the mixed mineral ...
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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, …
Ultimately, the concentrate and tailing were filtered and dried, and the grade of Cu and S were chemical analyzed. ... 94.50% existed in the free particles, and only 0.80% associated with chalcopyrite. Table 4 list the liberation degree of chalcopyrite and the corresponded polarized light microscopy measurement results are pictured in Fig. 4.
As shown in Table 3 and Fig. 17, the N peak area of chalcopyrite with PASP treatment is 573.3. And the N peak area of chalcopyrite with ADD treatment is 51.7. After ADD addition, the N peak area of chalcopyrite with PASP treatment decreases to 144.9, which indicates ADD may replace PASP adsorbed on the surface of chalcopyrite.
The XPS spectra of chalcopyrite surface with and without Tween-20 treatment are shown in Fig. 7. In the case of the control (without Tween-20), the Cu 2p 3/2 peak of 932.30 eV (without satellite ...
Chalcopyrite (CuFeS 2) is the most abundant copper-containing mineral, ... for 2 min. After that, the flotation reagents (MIBATC, terpineol) were added for 2 min. Finally, the concentrate and tailing in the flotation cell were dried, weighed and the recovery rate was calculated. ... Table 2 showed the elemental contents with and without ...
The pattern of the x-ray diffraction (XRD) analysis is shown in Fig. 1 and indicates that the sample contained pyrite (FeS 2) and magnetite (Fe 3 O 4) as major phases, talc, and antigorite as minor phases with a chemical composition of 0.16% Cu, 0.04% Co and 0.08% Ni, 56.8% Fe and 24.5% S (Table 1). Titration method with …
