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The tailings from ore processing units contain a large quantity of solid particles in suspension heavy metal ions flotation reagents organic matter etc Chen et al 2021 The tailings from the industrial flotation circuit in plant 2 of a gold mining company are discharged into the tailings dam at
know morefloat higher degree of substituted zinc by iron in sphalerite resulting in reduction of tailing losses to % However clean zinc concentrates of higher grade and recovery could not be achieved due to the complex nature of the sample EPMA examination of rougher tailings revealed that the
know moreDIRECT FLOTATION In which the mineral is attached to the froth and the gangue remains in the tailing 2 REVERSE FLOTATION in which the gangue is attached to the froth and minerals remain in Copper Sulphide film on the mineral surface now allows a stable and easy flotation of the Sphalerite ore by the Xanthate collector as
know moreIn Pb Zn ore flotation unintentional activation of sphalerite often leads to difficult separation of Pb and Zn minerals during which grinding plays a key role in unintentional activation Therefore the aim of this study was to evaluate the surface component changes of two different mineral particles and to propose the interaction between galena and sphalerite during mixed grinding using
know moresphalerite As well the immediate reactivation of zinc after it has been depressed at the onset of Cu/Zn separation flotation added additional metallurgical complexity to the process Subsequent to the Cu/Zn separation circuit an unconventional yet proven effective simultaneous cyanide detoxification zinc
know moreAt the given reagent and operating conditions floc flotation increases the floatability of the galena and sphalerite fines over 30% ad 50% in the range of pH 5 to 8 respectively in comparison to the corresponding conventional flotation Clearly floc flotation is an effective means of recovering galena and sphalerite fines
know moreincluding tailings and wastes The concept is to produce bulk concentrates or middling concentrates that will beexample copper sulphate acts as an activator for the flotation of sphalerite using xanthate as a collector at relatively low concentration Copper ion exchanges for zinc ion of the mineral surface and the sphalerite particle
know moreIn this work the flotation recovery of sphalerite and pyrite from an old high zinc grade tailing was studied In particular the effect of different flotation reagents such as collector auxiliary collector depressant activators and frother on the flotation performance were investigated
know morefmding application in treating tailing ponds Mechanisms associated with the use for microbiallyWhile pretreatment with sul£uric acid solution at pH 2 without any bacteria itsel£ improved sphalerite flotation significantly with and without flotation reagents conditioning at the same pH with
know moreAs an example of the beneficial effect of copper sulfate in the activation of zinc sphalerite toward flotation the series of results shown in Fig 1 is of represent rougher tests on a sample of heavy pyritic ore The particular sample in question contained about % zinc as marmatite; and was treated in a circuit made alkaline with lime using pine oil as a frother and
know moreThe sphalerite was then separated from the galena flotation tailings activating it with 350 g/t of copper sulphate and using 20 g/t of potassium butyl xanthate as a collector The Zn concentrate resulting after three re cleaning stages had a content of % Zn and a recovery of %
know moreFROTH FLOTATION RECENT TRENDS IIME JAMSHEDPUR 1998; pp 18 41 Flotation of Sulphide Ores HZL Experience 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
know moreN Hydrocinnamoyl N phenylhydroxylamine HCNPHA was determined to float sphalerite without copper sulfate activation However the concomitant flotation of sulfidic pyrite and nonsulfidic gangue silica minerals significantly reduced the grade of the float concentrate The addition of only 200 g/t copper sulfate which is ∼20% of that which is being used currently in the xanthate reagent
know moreFroth flotation was invented in the early 1900s in Australia by Potter and around the same time by Deprat The process was adapted and applied to a wide variety of materials to be separated In the 1960s the flotation technique was adapted for deinking recycled paper
know moreBuffering of Cells Aids the Flotation of Sphalerite suspended in water was tested for its capacity to float sphalerite or galena as a function of pH of the bacterial cell suspension The lack of significant floatability of either sphalerite or galena throughout the pH range tested prompted the exploration of the circumstances under which the bacteria could float the
know moreconsecutive flotation cell in a bank of four cells in order to maximize kinetics of sphalerite flotation On October 3rd 2021 the primary collectors PAX and SIPX were switched such that PAX was dosed to the lead circuit and SIPX dosed to the Zinc circuit This
know moreFigure 7 Grade recovery curve of the Gonçalo lepidolite froth flotation Similarly to what occurred with spodumene it was not possible to obtain concentrates with Li 2 O grades close to the Gonçalo lepidolite Li 2 O content % Li 2 O [31] even after the cleaning stage having been % Li 2 O the maximum value achieved The shape of the grade recovery curve indicates that the
know moreIn zinc flotation CuSO 4 demonstrates an apparent activating effect on the inhibited sphalerite with its appropriate dosage at 2 10 4 mol/L In actual separation and selection of ore when the grades of lead zinc and silver in cyanide tailings are respectively % % and 272g/t a fairly good index is obtained where the Pb concentrate
know moreBioleaching of a low grade sphalerite concentrate produced from tailings flotation Sphalerite Zn Fe S is a mineral that is the chief ore of zinc It consists largely of zinc sulfide in crystalline form but almost always contains variable iron When iron content is high it is an opaque black variety marmatite
know moreIn this work the flotation recovery of sphalerite and pyrite from an old high zinc grade tailing was studied In particular the effect of different flotation reagents such as collector auxiliary collector depressant activators and frother on the flotation performance were investigated The synergic effect of the collector blends as well as frother blends were also studied
know moreThe tailing of the lead flotation stage passes direct or as explained above through a thickener to the zinc conditioner where copper sulphate is added to activate the zinc minerals Lime is generally introduced at this point to depress pyrite and to maintain the alkalinity of the pulp at the required pH value usually between and
know moreFlotation tailings and single mineral samples such as pyrite sphalerite and chalcopyrite along with their different combinations were analysed to highlight the influence of ore mineralogy on the operating conditions The effects of different kinds of oxidants oxygen hydrogen peroxide ferricyanide and ozone and chemical additives
know moreThe overarching goal of this work was to test the possibility of replacing sodium cyanide by chitosan polymer as a selective pyrite depressant in the bulk flotation of complex sulfide ore sample containing galena PbS chalcopyrite CuFe[] sphalerite ZnS pyrite Fe[] dolomite CaMg[ C[] ] and marcasite a
know moreNormal sphalerite flotation practice is to raise flotation pH to 10 12 for enhancing the rejection of iron sulphide minerals to the sphalerite flotation tails Many operators prefer to use an alcohol type frother in sphalerite flotation to maximize sphalerite flotation flotation tailing is the zinc concentrate If the
know moreUntil now this method was only under investigation when considering indium bearing sphalerite minerals Eisen et al 2021 or material from the flotation tailings dams Martin et al 2021
know moreThe usual practice is to float galena first followed by the flotation of sphalerite after activation with copper II sulphate If ores contain pyrite it is depressed by maintaining an alkaline pH 9 10 and using NaCN as flotation tests with a Pb/Zn ore from Polaris selective flotation of galena could not be achieved
know moreAs ore grades constantly decline more copper tailings which still contain a considerable amount of unrecovered copper are expected to be produced as a byproduct of froth flotation This research reveals the occurrence mechanism of copper minerals in typical copper sulfide tailings using quantitative mineral liberation analysis MLA integrated with scanning electron microscopy energy
know moreSphalerite ZnS Galena PbS Microcline KAlSi 3O 8 Illite 2 ITM2 RG K Si Al 4O 10 OH 2 Table 3 Grinding time of sample from tailings of Ravanj flotation plant Grinding time Particle diameter minute d80 = μm 15 75 20 53 25 45 Figure 1 Mineralogical analysis with thin section
know moreThe first principles calculations were employed to study the interaction mechanism of the adopted reagents in the recoveries of sphalerite and pyrite from the galena flotation tailing
know moreFlotation tailings dump material of the former lead zinc mine near Freiberg Germany consists of fine grained quartz feldspar mica as well as the sulphide minerals pyrite galena and sphalerite not recovered by flotation Sphalerite contains aside from iron copper and cadmium significant amounts of indium up to % w/w leading to
know moregrade of arsenic in concentrate Overgrinding led to desliming and more loss of As in tailings It was established that allylalkylthionocarbamates and dialkyldithiophosphinates could be considered as prospective reagents for tennantite ore flotation Keywords Refractory Copper pyrite Ores Flotation Tennantite Arsenic Recovery
know moreFlotation is an incredibly robust and versatile process that works equally well on mixed sulphide oxide silicate• sphalerite • tetrahedrite Polymetallic ores such as copper lead zinc silver bismuth ores are some of thetailing pond and recycle water capabilities • pulp density and pH monitoring and
know moreThe flotation response of a typical zinc lead Zn/Pb ore with respect to coarse composite sulphide/non sulphide particles is reported The flotation tests were carried out on a selected feed particle size range 600 75 μm at P 80 of 390 μm and the recovery of Zn composite particles analysed on a size by size basis The best results were achieved with the use of 75 g/t sodium
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