Multiscale tests confirm its contributions on improving sphalerite flotation performance. In this paper, an optimized flotation approach, two-stage roughing process, was …
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Because of the similarity between marmatite and sphalerite, we assumed that ACS might also be appropriate for the selective flotation of sphalerite. In this study, we determined …
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The strong contamination of the interface is the main problem that results in low flotation efficiency of sphalerite in cyanide tailings. However, the consumption of cyanide and dissolved oxygen, as well as the concentration of ions including Zn2+ and SCN− in the leaching solution, decreased with the use of ceramic ball medium. The conclusions obtained from …
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The flotation results demonstrate that Zn 2+ and SO 3 2− provide a synergistic depression effect on sphalerite and the aerofloat collectors exhibit more selectivity towards galena.
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The results of the micro-flotation study reveal that the flotation separation of graphite and sphalerite mixed ore was best under the flotation reagent concentration system of 10 mg/L PBX, 10 mg/L CMC and 8 × 10 −5 mol/L CuSO 4, and the flotation recoveries were 8.22 % and 79.24 %, respectively.
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The problem of treating oxidized lead-zinc ores for the production of high-grade lead zinc flotation concentrates is a complex problem due to the nature of the ores and to the soft sliming characteristics of the lead and zinc …
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For flotation test, the sphalerite sample was dr y ground in an agate mortar and pestle and sieved to 100-150 um size range. The particles were dislimed, cleaned with alcohol for three times, rinsed with distilled water, and then dried in a decicator for overnight under inert
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The microflotation was carried out in a XFG flotation cell with an effective volume of approximately 40 mL in an open air condition. First, the sphalerite and chalcopyrite were mixed with a proportion of 1:1, and then 2.0 g of mixed sample was cleaned by ultrasonic treatment prior to the flotation test.
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Pyrite is a common sulfide ore, usually associated with sphalerite, chalcopyrite, galena, stibnite, gold, coal and other valuable minerals 1,2,3,4,5,6.Research on the floatability of pyrite is ...
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This work investigates the critical contact angle for the flotation of coarse (850–1180 μm, 425–850 μm and 250–425 μm) sphalerite particles in an aerated fluidised-bed separator (HydroFloat) in comparison to a mechanically agitated flotation cell (Denver flotation cell).In this study, the surface chemistry (contact angles) of the sphalerite particles was controlled by …
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Infrared spectroscopy analysis of the sphalerite solids floated in the first 30 s and 1 min, for tests with 75 mgL−1 of ferric ion Fe+3, is shown in Fig. 5. This figure also contains the infrared spectra of sphalerite fresh. The absorption band at around Fig. 5 Infrared spectra of sphalerite, obtained during the flotation with 75 mgL−1 ...
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Metallurgical testing on a poly metallic Cu/Pb/Zn ore indicated either copper or lead activation of sphalerite in a Cu/Pb flotation test. To establish and rank the factors controlling sphalerite flotation.
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An In-plant Test of Sphalerite Flotation without Copper Activation. 24 th Annual CMP Conference, Paper No. 14, Ottawa (1992) Google Scholar. Zhang et al., 1997. Q Zhang, Z Xu, V Bozkurt, J.A Finch. Pyrite Flotation in the Presence of Metal Ions and Sphalerite.
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Effect of the copper sulphate concentration on the flotation recovery (a) and rate of attachment (b) of the bubbles with sphalerite particles using PIPX at water salinity of 2 g/L.
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Tests indicate that sphalerite recovery of the flotation concentrate in the laboratory testing was significantly higher than in the plant. The ToF-SIMS surface analysis identifies surface species …
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In fact, the flotation yields for sphalerite and galena were 3–4 times larger than that of pyrite. Download: Download high-res image (172KB) Download: Download full-size image; ... Scanning electron microscopy image of a sphalerite grain in micro-flotation tails (45 °C test): (a) sphalerite grain image and EDS point analysis of precipitate ...
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Li et al. [22] used Na 2 CO 3, ZnSO 4 and Na 2 S as combination inhibitors in the lead–zinc flotation test, and the Pb grade in lead concentrate was 63.66 % and the galena recovery was 92.71 %. Zhou ... Accordingly, the negative influence of seawater on sphalerite flotation was more significant than that of galena.
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Temperature variations could potentially impact flotation performance, leading to operational and economic issues. Several historical and currently operating plants across Canada have reported seasonal metal losses as one of their major challenges. Improvements in flotation efficiency at cold temperatures are important for the sustainable development of the industry, …
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In this paper, the effect of germanium content in sphalerite on the floatability of sphalerite was studied using micro flotation test. The difference mechanism between copper ion activated sphalerite and germanium-bearing sphalerite was studied using surface adsorption amount measurements, Zeta potential measurements, local electrochemical ...
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Through industrial testing at the Huize lead-zinc mine, it was found that the floatability of sphalerite varied greatly with the iron impurity content. Three kinds of Huize sphalerites with iron contents of 2.30 wt.%, 3.20 wt.% and 4.66 wt.%, were used to study the influence of small amounts of iron impurity in the sphalerite on xanthate adsorption and …
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The flotation of copper-activated sphalerite is little or not affected by a change in pH (Shen et al., 1998), with an efficient flotation in the pH range from 5.5 to 12 (Soltani et al., 2014). On the other hand, the flotation of pyrite is very sensitive to pH changes, with flotation recoveries and rate constant decreasing with increasing pH ...
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"Sphalerite flotation in the absence of copper activation at moderately alkaline pH has been observed in laboratory studies. An in-plant test of this observation was conducted at …
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Request for analysis: Metallurgical testing on a poly metallic Cu/Pb/Zn ore indicated either copper or lead activation of sphalerite in a Cu/Pb flotation test. Objective: To establish and rank the factors controlling sphalerite flotation. …
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All tests were performed in a 5 liter cell. These were rougher only from which 3 froth flotation concentrates were collected over a 10 minute time span. Here are the test conditions. The laboratory results indicate a longer conditioning time accelerates zinc sphalerite flotation kinetics particularly in the first rougher concentrate. At the end ...
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The single-mineral flotation tests, contact angle measurements and adsorption capacity tests show that dodecylamine had a good collecting effect on sphalerite in the pH range of 2.0–12.0, and the flotation recovery of sphalerite increased with the increase in pH.
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The collected flotation sphalerite and the Fe-doped sphalerite left at the bottom of the flotation tank were filtered and dried and the flotation recovery of the Fe-doped sphalerite was calculated. For the flotation test after Cu activation, CuSO 4 solution (1 × 10 −5 mol/L) was first added to the pulp; the other steps were the same as those ...
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Based on the flotation rate test findings, the sphalerite roughing operation can be divided into several stages. Given that an all-around modification of the original flowsheet in the plant is impossible, a two-stage roughing process (Fig. 3) is proposed. The new process divides the conventional single-stage rougher into two stages: the first ...
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In this study, selective adsorption mechanism of zinc ions on the surfaces of galena and sphalerite in the flotation separation of Pb-Zn was comprehensively explored by …
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3.1. The Effect of Iron Impurity Content on the Flotation of Sphalerite A natural hydrophobicity test was carried out on the three sphalerite samples, and the results are shown in Figure 2. The ...
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In this paper, the effect of pyrite on the activation of sphalerite was investigated by micro-flotation, copper adsorption experiments, X-ray photoelectron spectroscopy (XPS), and electrochemical measurement. The micro-flotation test results showed that the recovery and flotation rate of sphalerite with copper sulphate as activator and butyl xanthate as collector were significantly …
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