Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered …
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Interaction mechanism of the adopted reagents in the flotation recovery of sphalerite and pyrite from a galena flotation tailing: First-principles calculations. Li-min Zhang Jiande Gao S. A. Khoso Yuling Liu Mengjie Tian
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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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This research focuses on studying the effects of the operating temperature and preconditioning time on the adsorption kinetics of sodium diisobutyl dithiophosphinate and sodium isopropyl xanthate collectors on the surface of galena, using contact angle measurements. The results indicate a strong correlation between higher operating water …
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The tailing in a large lead-zinc-iron-sulfur multi-metallic mine has rich reservation in variety of metallic minerals. It has been difficult to recover because of all kinds of reasons.
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This study is focused on the froth flotation reprocessing of a copper mineral from flotation tailings. The effects of flotation parameters including pulp density, collector dosage, frother dosage ...
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Sphalerite tailings are the most important type of waste in the mining district of Sardinia. This situation justifies the interest in the applicability of flotation as a …
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Cusack and Stump (1977) reported that galena losses in deleaded tailing only reached 10% above pH 11 in mill water, however this loss was noted at pH 9 using fresh water. ... Under these conditions the dependency of galena flotation on MBS (and temperature) was less marked. Prevention of the solution decomposition of ethyl …
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Cyanide tailing flotation occurred under the normal stirring rate ... galena particle flotation, and the residue oil promoted the aggregation of these galena particles on the chalcopyrite surface.
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Sphalerite (ZnS), galena (PbS) and pyrite (FeS2) are the important metallic sulphide minerals. These three sulphide minerals are often associated with each other, and large amounts of sphalerite and pyrite are lost in the galena flotation tailings. In this study, the flotation method was …
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Artificial mixed minerals flotation results further proved that FG could selectively depress galena flotation, and a concentrate with CuFeS2 grade of about 86% and recovery of around 96% was ...
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A copper‑lead‑zinc‑iron polymetallic sulfide ore was from Gacun Mine, Sichuan Province, China. Copper sulfide minerals in the ore were recovered by flotation using collector N-ethyl-N′-isopropoxycarbonyl thiourea, and the produced tailing was dried at 60 °C and used as the raw ore for recovering valuable galena.
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The tailing was then crushed to 20 or 40 mesh as indicated in the table of test results (Table 2). The crushed tailing was then conditioned with the same quantities of reagents as before and table floated. The concentrate from this retreatment of the original tailing was termed middling. The small quantity of tailing made difficult the accurate
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DOI: 10.1016/j.mineng.2024.108575 Corpus ID: 266927519; Thiourea compounds with diverse hydrophobic group used as selective flotation collectors for galena @article{Feng2024ThioureaCW, title={Thiourea compounds with diverse hydrophobic group used as selective flotation collectors for galena}, author={Zhitao Feng and Yuxin Zhao …
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Interaction mechanism of the adopted reagents in the flotation recovery of sphalerite and pyrite from a galena flotation tailing: First-principles calculations. Li-min Zhang Jiande Gao S. A. Khoso Yuling Liu Mengjie Tian
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1. Introduction. Galena (PbS) and sphalerite (ZnS) are abundant in the earth and usually exist together in the same deposit. 1−3 Most lead–zinc ores are processed by differential flotation, in which galena is recovered first followed by sphalerite. 4,5 The addition/presence of lead ions (Pb 2+) in ore pulp can directly promote the sphalerite …
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In this study, the flotation method was employed to recover sphalerite and pyrite from a galena flotation tailing waste. The reagent scheme, including Cu 2+ activator and butyl xanthate (BX ...
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Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are ...
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The recovery of zinc from a flotation tailing using 17-different leaching agents, including inorganic and organic acids, alkaline solutions and chelating agents, was investigated. ... 95% of the global mined lead and zinc productions were derived from sulfide type of ores, i.e. galena (PbS) and sphalerite (ZnS), whereas only 5% of lead …
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where ε represents the flotation recovery (%), m1 and m2 indicate the weights of the concentrate and tailing products (g), ... galena flotation was barely affected, and 87% galena could be obtained in the presence of 10 mg/L pectin. The recovery difference between galena and sphalerite under 10 mg/L pectin was approximately …
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Steel grinding media are routinely used in flotation circuit, and the formation of colloidal iron oxide/hydroxides originating from the grinding media can form slime coatings on galena surface through van der Waals and electrostatic interactions governed by DLVO theory, exerting a significant detrimental effect on the flotation performance of ...
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For artificial mixed minerals flotation tests, the Cu grades of the concentrate and tailing were assayed, and the chalcopyrite recovery was calculated based on the distributions of CuFeS 2 between the two products. ... Fig. 4 shows the effect of pulp pH on chalcopyrite and galena flotation in the absence and presence of FG.
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Each selective flotation experiment consists of two parts: part G, the flotation of galena in the presence of cyanide, and part S, the flotation of sphalerite from the tailing of part G using copper sulphate to activate the sphalerite.
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These tables produce a final tailing (which is pumped to waste by a SRL Sand Pump), a lead concentrate and also a middling product containing both lead and zinc. ... direct flotation is comparatively rare except for the treatment of tailing dumps. The flotation of galena Pb is comparatively simple. It is usually carried out in subaeration ...
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The low separation efficiency of traditional mechanical flotation cells for galena flotation primarily was caused by the low collision probability between bubbles and fine particles and high ...
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On the other hand, with the pH of flotation pulp exceeding 10, sphalerite and pyrite were depressed enormously, which was beneficial to the recovery of chalcopyrite and galena. With the Cu–Pb bulk flotation flowsheet, the cyanidation tailing was processed to obtain qualified Cu concentrate with grade of 13.17% and recovery of 70.00% compared ...
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Herein, a reagent scheme comprising aerofloat collectors and Zn 2+ and SO 3 2− depressants is developed for the flotation separation of galena from sphalerite-rich sulphide ore.
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The galena is then floated with the addition of cresylic acid or pine oil in conjunction with one or more of the xanthates or aerofloat, the zinc minerals passing in the tailing to the second stage of flotation.
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Over-conditioning with straight chain xanthates resulted in hydrophobic aggregation of galena particles which resulted in the detachment of galena particles …
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Conversely, Fig. 12 b demonstrates that in tailings (Tail 3), the Pb content reaches 0.41% (±0.03) at 6 min of flotation, indicating that galena is remaining in the tailings. This is most likely due to both the reduced entrainment caused by heavier particles of lead-bearing phases at similar sizes of other entrained material, as well as slower ...
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