Flotation Mechanism of Sphalerite by Sulfuration–Amine …
Sphalerite is a common sulfide mineral, and xanthate is usually used as the collector of sphalerite flotation. In order to realize the simultaneous flotation of sphalerite- and zinc-containing ...
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Flotation separation of pyrite and carbonate minerals from a …
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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Mechanism Study of Xanthate Adsorption on Sphalerite/Marmatite …
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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Influence of surface oxidation rate on the flotation of sphalerite …
Differences in the flotation behavior of galena and sphalerite using potassium permanganate (KMnO 4) and gum arabic (GA) alone and using a mixture of KMnO 4 and GA were investigated. The single mineral flotation tests revealed that when KMnO 4 and GA were used individually, galena and sphalerite flotation were inhibited, but the reagent dosages …
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MECHANISM OF SPHALERITE DEPRESSION IN AN OPEN …
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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Improving Flotation of Sphalerite
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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Use of ZnSO4 and SDD mixture as sphalerite depressant in copper flotation
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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An In-Plant Test of Sphalerite Flotation without Copper …
"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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Effect of a Small Amount of Iron Impurity in Sphalerite …
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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Study on the influence of graphite and sphalerite flotation …
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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Ore mineral characteristics as rate-limiting factors in …
Sphalerite deportment study on the flotation of complex ore using QEMSCAN®. Sphalerite recovery increases with Fe and Mn up to a critical concentration. Fe-poor and Mn …
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The flotation of sphalerite mine tailings as a remediation …
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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Flotation separation of sphalerite from galena using eco …
In the present paper, the effect of PL on galena and sphalerite flotation behaviour was studied by flotation. The mechanism of PL adsorption was investigated by zeta potential measurement, contact angle measurement, reagent adsorption and XPS measurement. ... For each test, 30 mg of galena and sphalerite (-2 μm) were placed into a beaker and ...
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Hotspots and trends of sphalerite flotation: Bibliometric …
By analyzing the visualization atlas of research hotspots in the third chapter provides a comprehensive overview of future research on sphalerite flotation from five aspects: …
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Selective flotation separation of chalcopyrite and …
immediately to flotation test. 2.3. Flotation tests Microflotation experiments were conducted in XFG Ⅱ5 flotation machine (40 mL, Jilin Exploration Machinery Factory) with a Plexiglass cell at room temperature (Ca. 25°C). For each test, 2 g of single-mineral samples (or 1 g of chalcopyrite and sphalerite samples in artificial mixed-mineral ...
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Effect of seawater on flotation separation of galena from sphalerite
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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Activation of Sphalerite by Ammoniacal Copper …
Small-Scale Flotation Test. e otation tests were conducted in a modi ed Hallimond tube, as described in 0 20 40 60 80 100 Cumulative recovery (%) 2 468 10 Flotation time (min) ... In a typical test, . g of sphalerite with the particles size of mto m was rstly mixed with distilled water in a hydrochloric acid or sodium hydroxide. A er that, a ...
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Depression mechanism of sulfite ions on sphalerite and Pb
The depression mechanism of sulfite ions on sphalerite and Pb2+ activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth insight. Therefore, the depression mechanism of sulfite ions on sphalerite and Pb2+ activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with …
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Critical contact angle for coarse sphalerite flotation in a fluidised
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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Depression mechanism of sulfite ions on sphalerite and …
The effect of sodium bisulphite on the xanthate-induced flotation of copper-activated sphalerite has been studied using batch flotation testing, surface analysis techniques (XPS and ToF-SIMS), and ...
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Flotation Mechanism of Sphalerite by Sulfuration–Amine …
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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Effect of a Small Amount of Iron Impurity in Sphalerite on
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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Effect of seawater on flotation separation of galena from sphalerite
In contrast, the floatability of sphalerite depends on its impurities, especially the content of iron. Generally, sphalerite is a sulfide mineral that usually does not exhibit flotation. The high floatability of sphalerite is attributed to the natural activation of heavy metal ions, especially copper ions, or mineral oxidation [11], [12], [13 ...
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The flotation separation of sphalerite from pyrite through …
And the bulk samples were crushed, hand-picked, ground and sieved, the fraction with a particle size of 38–75 μm was used in the micro-flotation test, and that less than 38 μm was further ground to pass 5 μm and applied in FTIR and XPS measurements. All the as-prepared mineral samples were sealed in glass bottles and stored in a fridge.
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Interactions of tert dodecyl mercaptan with sphalerite and effects …
In the flotation of sphalerite, the concomitant flotation of sulfidic (pyrite) and nonsulfidic gangue (silica) minerals significantly reduces the grade of the float concentrate. Laboratory scale experiments have been conducted to investigate the effect of tert dodecyl mercaptan (TDM) as a collector on the flotation of sphalerite.
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MLA-based sphalerite flotation optimization: Two-stage …
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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Characterization by FTIR of Sphalerite Obtained in the …
Sphalerite flotation tests were carried in a Denver-type flotation cell using 1 L of deionized water and mineral particles retained in the 200 mesh for each test.
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MLA-based sphalerite flotation optimization: Two-stage roughing
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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Research on the flotation of sphalerite and germanium …
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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An In-Plant Test of Sphalerite Flotation without Copper …
"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 Kidd Creek Mine LTD. using a portable minicell flotation circuit. The results confirm that raising the pH causes sphalerite flotation.The testwork with the minicell circuit is described. The circuit, …
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