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Oct 01, 2015 The separation of copper-bearing from zinc sulphides is effected by two-stage selective flotation, the zinc minerals being depressed and the copper minerals brought up in the first stage with reagents similar to those required in the lead flotation section of a lead-zinc plant; the zinc sulphides are floated in the second stage in the ordinary ...
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Apr 27, 2016 Lead Zinc Sulfide Separation by Sequential Flotation. ... sphalerite (ZnS) is associated with galena and often sulfides of iron and copper. It is therefore essential to arrange the flowsheet not only for recovery of the valuable minerals, but also to selectively separate them into products acceptable to the smelters for ultimate conversion into ...
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Typical lead-copper-zinc sulphide minerals were found hard to be separated selectively by froth flotation in the plant practice operation due to part of sphalerite was progressively entrapped into lead-copper bulk flotation. A series of de-zincing on lead-copper flotation tests has been conducted in the laboratory to reduce unwanted zinc content.
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28/08/1990 The depressant of the present invention improves the selective flotation separation of copper-zinc sulphide ores, copper-lead-zinc sulphidic ores, lead-zinc and copper-nickel sulphides. The LS depressants, as discussed above, are reaction products of quebracho, guar gum or dextrin with lignin sulphonate further reacted with selected ...
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Some of the metals that can do the job are copper and lead. At a pH between 8-9 lead can activate sphalerite to cause it flotation. So the reason is during the flotation of the two there may be lead re dissolution from galena which may activate sphalerite to cause it flotation. It may best if you are doing bulk flotation of the two.
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In general, the most difficulty of the polymetallic sulfide ores separation is the separation among several kinds of ores, especially those low-graded ores with complex embedded features. Therefore, it’s a significant step for separating lead-zinc, copper-zinc, copper-lead to choose right flotation reagents.
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This paper reports the results of flotation tests conducted with a copper-lead-zinc sulphide ore. The major sulphide minerals in the ore are chalcopyrite, galena, sphalerite, marmatite and pyrite ...
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Jul 17, 2018 Sodium sulfide is one of the most widely used alkali metal sulfides in the flotation of copper, lead, and zinc minerals in their oxidized form. The sulfidization process, developed in the U.S.A. in 1915-20 for oxide copper minerals flotation, is especially suitable for oxidized lead ores in which the gangue is usually basic.
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The copper and zinc-bearing sulphide orebody of ... hasentered demand afairly complete separation ofthe metal sulphides. The specifications generally require a ... afraction ofthecopper remaining inthecopper flotatIOn tails isfloated into the zinc concentrate. Asshown in Fig(2),with theaverage feedgrade tothemillof1,74
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Nov 01, 2014 The copper flotation section produces a copper concentrate through two stages of flotation as shown in Fig. 1. Flotation reagents are added through the conditioning tank, TKF2. Cytec’s Aerofloat, a dithiophosphate, is used as a collector and Interfroth 63 is added as a frother. Sodium meta-bi-sulphite (SMBS) is added to control lead and zinc ...
Read MoreTypical lead-copper-zinc sulphide minerals were found hard to be separated selectively by froth flotation in the plant practice operation due to part of sphalerite was progressively entrapped into lead-copper bulk flotation. A series of de-zincing on lead-copper flotation tests has been conducted in the laboratory to reduce unwanted zinc content.
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The flotation concentrate contained 7.79% Cu, 22.00% Pb, 4.81% Zn, 8.24% S, and 12.15% CaO; copper sulfide accounted for 76.97% of the copper, lead sulfide for 25.55% of the lead, and zinc sulfide ...
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The polymetallic separation flowsheet of copper/lead bulk flotation – copper/lead separation - priority flotation zinc and pyrite from the bulk flotation tailings was used. The concentrate indexes of the grade of copper, lead, and zinc were 20.87%, 49.91%, and 60.10%, respectively, and the recoveries were 75.59%, 91.62%, and 74.07%.
Read MoreIn general, the most difficulty of the polymetallic sulfide ores separation is the separation among several kinds of ores, especially those low-graded ores with complex embedded features. Therefore, it’s a significant step for separating lead-zinc, copper-zinc, copper-lead to choose right flotation reagents.
Read MoreThe copper and zinc-bearing sulphide orebody of ... hasentered demand afairly complete separation ofthe metal sulphides. The specifications generally require a ... afraction ofthecopper remaining inthecopper flotatIOn tails isfloated into the zinc concentrate. Asshown in Fig(2),with theaverage feedgrade tothemillof1,74
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The depressant of the present invention improves the selective flotation separation of copper-zinc sulphide ores, copper-lead-zinc sulphidic ores, lead-zinc and copper-nickel sulphides. The LS depressants, as discussed above, are reaction products of quebracho, guar gum or dextrin with lignin sulphonate further reacted with selected inorganic ...
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Lead sulphide is a very insoluble compond so that additions of sodium sulphide (Na 2 S) result ... Lecture 5 Flotation 9 Solubility products of zinc xanthates Zinc xanthate Solubility product Ethyl (C2) ... Forming copper sulphide on the surface. The stability of CuS is greater than ZnS and Zn(OH) 2.
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from rest of the sulphides. Flotation Studies As mentioned in the previous section the basic flotation scheme consisted of differential flotation separation by depression of zinc bearing minerals using a combination of sodium cyanide and zinc sulphate as depressant and flotation of lead minerals using potassium ethyl xanthate (KEX)
Read MoreNov 01, 2014 The copper flotation section produces a copper concentrate through two stages of flotation as shown in Fig. 1. Flotation reagents are added through the conditioning tank, TKF2. Cytec’s Aerofloat, a dithiophosphate, is used as a collector and Interfroth 63 is added as a frother. Sodium meta-bi-sulphite (SMBS) is added to control lead and zinc ...
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Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of these base metal sulphide minerals is predominantl y through the froth flotation ...
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Abstract. Problems arising during flotation of complex Cu-Pb-Zn sulphide ores are in general of geological origin. The features of these ores are reviewed, stressing that mineralogical studies extending to process mineralogy are prerequisite for a consistent flotation process.
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Jul 01, 2020 The combination of T-16 + zinc sulfate inhibitor can inhibit zinc, activate copper and lead, and eliminate the effect of slurry foam viscosity, which can effectively realize the flotation separation of copper-lead and zinc. Activators It can enhance the action of minerals and collectors, so that the refractory minerals are activated and floated.
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FROTH FLOTATION : RECENT TRENDS @IIME, JAMSHEDPUR, 1998; pp. 18-41 Flotation of Sulphide Ores - HZL Experience V.P. KOHAD Hindustan Zinc Ltd., Zawar Mines, Udaipur - 313 901 ABSTRACT Flotation process, patented in the year 1906, was originally developed for mineral industry to recover values from high grade tailings of gravity separation plants.
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Feb 20, 2020 The lead-zinc sulfide is often associated with a variety of valuable components, such as lead, zinc, copper, sulfur and other useful minerals, whose floatability is obviously different, which determines the different froth flotation process of lead and zinc sulfide ores. The common froth flotation process of sulfide ore mainly includes priority ...
Read MoreTypical lead-copper-zinc sulphide minerals were found hard to be separated selectively by froth flotation in the plant practice operation due to part of sphalerite was progressively entrapped into lead-copper bulk flotation. A series of de-zincing on lead-copper flotation tests has been conducted in the laboratory to reduce unwanted zinc content.
Read MoreAbstract. Problems arising during flotation of complex Cu-Pb-Zn sulphide ores are in general of geological origin. The features of these ores are reviewed, stressing that mineralogical studies extending to process mineralogy are prerequisite for a consistent flotation process.
Read MoreThe depressant of the present invention improves the selective flotation separation of copper-zinc sulphide ores, copper-lead-zinc sulphidic ores, lead-zinc and copper-nickel sulphides. The LS depressants, as discussed above, are reaction products of quebracho, guar gum or dextrin with lignin sulphonate further reacted with selected inorganic ...
Read MoreFeb 20, 2020 The lead-zinc sulfide is often associated with a variety of valuable components, such as lead, zinc, copper, sulfur and other useful minerals, whose floatability is obviously different, which determines the different froth flotation process of lead and zinc sulfide ores. The common froth flotation process of sulfide ore mainly includes priority ...
Read MoreLead sulphide is a very insoluble compond so that additions of sodium sulphide (Na 2 S) result ... Lecture 5 Flotation 9 Solubility products of zinc xanthates Zinc xanthate Solubility product Ethyl (C2) ... Forming copper sulphide on the surface. The stability of CuS is greater than ZnS and Zn(OH) 2.
Read MoreA new depressant composition is provided for the enhanced separation into separate value metal concentrates of copper, nickel, zinc, lead present in polymetallic and massive sulphide ores. The depressant is added in an aqueous solution prepared by dissolving first a mixture of quebracho and dextrin, or quebracho and guar gum. To the solution of modified quebracho a water soluble salt of
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As for copper–zinc ores, some of the lead–zinc ores are treated using bulk flotation followed by lead–zinc separation. Discover the world's research 20+ million members
Read MoreJul 01, 2020 The combination of T-16 + zinc sulfate inhibitor can inhibit zinc, activate copper and lead, and eliminate the effect of slurry foam viscosity, which can effectively realize the flotation separation of copper-lead and zinc. Activators It can enhance the action of minerals and collectors, so that the refractory minerals are activated and floated.
Read MoreNov 01, 2019 A first flotation stage is carried out at low pH (pH 6), in which the copper sulphide is floated while both galena and sphalerite are depressed. As shown in Fig. 13, at low pH both lead and zinc float poorly, while copper can still be recovered at high values. In a second flotation stage, galena is re-activated (usually by increasing the pH to ...
Read Moreconcentration of lead and zinc flotation in the Kooshk plant. Therefore, pre-flotation, which is a flotation stage prior to the galena flotation, is employed to remove part of the organic carbon. Following the pre-flotation stage, lead and zinc sulfides are floated in separate circuits and
Read MoreFlotation experiment research on a polymetallic sulfide ore of. flotation – copper/lead separation - priority flotation zinc and pyrite from the bulk flotation tailings was used. The concentrate indexes of the grade of copper, lead, and zinc were 20.87%, 49.91%, and 60.10%, respectively, and the recoveries were 75.59%, 91.62 ...
Read MoreThe flotation separation and recovery approach is quite similar to the Pb-Zn sulphide separation process. Sphalerite is depressed with zinc sulphate addition to the grind with sodium sulphide as an option for enhancing pyrite depression. Copper is floated in the first differential flotation stage at a
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and commissioned in November 2008. During the initial stages of sulphide operation, high copper (Cu)-low zinc (Zn) ore was fed to the plant. Marketable copper concentrate at 91-95% recovery was produced utilizing a high-pH bulk sulphide rougher flotation and 2 cleaning stages. Because of increased levels of Zn
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Sep 01, 2020 Polymetallic sulphides (copper, nickel, lead, zinc) Iron sulphides (pyrite, pyrrhotite, marcasite) Cross-linked causticized corn starch combined with polyacrylate and lignin sulphonate.Cross-linking agents selected: carbon disulphide, amionacetonitrile and diethylenetriamine.Minerals separation improved highlighting enhanced depressive ...
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