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sphalerite flotation test

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  • Improving Flotation of Sphalerite Effect of pH and

    For flotation test, the sphalerite sample was dr y ground in an agate mortar and pestle and sieved to 100150 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 inertA preliminary test was made to float sphalerite from a copper rougher tailing by activating it with copper sulfate (CuSO4 5H2 O) 36 TABLE II Results of collectorless flotation tests conducted on Texasgulf TypeA ore at pH 88 and 66 using 084 kg/ton of Na2S Test TA1, pH 88 Products Weight Assays (%) Distribution (%) (%) Cu Zn Cu Zn Cu concCollectorless flotation of chalcopyrite and sphalerite

  • MECHANISM OF SPHALERITE DEPRESSION IN AN OPEN

    Plant and laboratory test work was performed in order to optimize a copper/zinc flotation separation circuit at Matagami concentrator, Canada The testing identified a significant difference between the laboratory testing and the plant flotation, particularly for the sphalerite recovery in the rougher copper concentrateGrinding For each flotation test 50 g of sphalerite and 450 g of quartz were ground together for 18 minutes at a solidliquid ratio of 2 : 1 (67% solids by weight) in a cast iron ball mill using 25 mm mild steel balls After grinding, the mixture typically had a pH of about 7The activation of sphalerite by lead — a flotation

  • Galena Sphalerite Flotation & Separation Method

    The problem of treating oxidized leadzinc ores for the production of highgrade 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 minerals The ore for treatment is a leadzinc carbonate ore in a mixed siliceouslime carbonate gangue The association of the mineralsearly in 1914, as follows: The original laboratory test work on a sphalerite ore gave favorable flotation results, but after a mill had been built the flotation concentration of the ore was very unsatisfactory In diagnosing the probable reasons, oneCopper Sulfate as Flotation Activator for Sphalerite

  • Selective flotation separation of galena from sphalerite

    1 Introduction Galena (PbS) and sphalerite (ZnS) are the main sources of lead and zinc and usually associated in sulfide deposits Because of the similar surface properties of these two minerals, their flotation separation is a persistent topic of interest in mineral processing Xanthate is the most commonly used collector for sulfide mineral flotation, but its poor22 Flotation test The flotation test was carried out in a flotation cell with an effective volume of approximately 40 mL and spindle speed of 1650 r/min 20 g sample was cleaned by ultrasonic treatment (JCX50W) prior to the flotation testThen the sample was mixed with 40 mL distilled waterConditioning was performed depending on the aim of single test and goes asInteractions of tert dodecyl mercaptan with sphalerite and

  • Effect of Copper Sulfate on Zinc Sphalerite Flotation

    As 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 interestThese represent rougher tests on a sample of heavy pyritic ore The particular sample in question contained about 56% zinc as marmatite; and was treated in a circuit made alkaline with lime, using pine oil assphalerite surface as a mechanism of sphalerite recovery during lead flotation was not significant at the Century Mine concentrator, (b) the recovery of sphalerite during the carbon preflotation was predominantly due to a bulk flotation action and entrainment in the froth, (c) composite particle recovery was a significantThe Depression of Sphalerite during Carbon Preflotation

  • Surface chemistry in relation to flotation selectivity

    Ttest statistical analyses for data from sphalerite grain surfaces from concentrate/tail flotation tests All data in the tests were normalized by the total ion intensity and area The surface components in bright green are considered to be statistically different between the concentrate and tail samplesA natural hydrophobicity test was carried out on the three sphalerite samples, and the results are shown in Figure 2 The trend of flotation recovery for the three samples was basically the same,Effect of a Small Amount of Iron Impurity in Sphalerite

  • The Depression of Sphalerite during Carbon Preflotation

    sphalerite surface as a mechanism of sphalerite recovery during lead flotation was not significant at the Century Mine concentrator, (b) the recovery of sphalerite during the carbon preflotation was predominantly due to a bulk flotation action and entrainment in the froth, (c) composite particle recovery was a significantThrough industrial testing at the Huize leadzinc 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 230 wt%, 320 wt% and 466 wt%, were used to study the influence of small amounts of iron impurity in the sphalerite on xanthate adsorption and flotation behaviorEffect of a Small Amount of Iron Impurity in Sphalerite on

  • Effect of a Small Amount of Iron Impurity in Sphalerite on

    The flotation results showed that collector with more nitrogen atoms (DPTZ) offered better selectivity for the flotation separation of galena from a galena/sphalerite mixed mineral systemachieving an optimum flotation test condition, the effect of auxiliary collector types and pH were evaluated on the flotation of galena, pyrite and sphalerite 2 Materials and Methods 21 Characteristics of pyriterich leadzinc sample A representative pyriterich leadzinc sample was obtained from theSelective separation of galena and sphalerite from pyrite

  • MASTER'S THESIS

    mineralogy and zinc and iron content of sphalerite A series of batch flotation test were used to evaluate the behavior of main ore minerals: sphalerite and galena Obtained data was used to create floatability component models that were further applied in simulation by HSC Chemistry 71 to give forecast of grades and recoveries in full scaledisseminated chalcopyrite, sphalerite, galena and tetrahedrite The flotation plant design was based on extensive benchscale test work (including locked cycle tests) on drill core and many months of operation of a 30 t h2 1 pilot plant using the modified Cleveland Tin Mine processing plantFlotation data for the design of process plants Part 2

  • Depression of Leadactivated Sphalerite by Sodium

    In this study, flotation behavior of sphalerite upon lead activation was studied Sodium hydrogen phosphate was applied as a main depressant to test its effect on improving PbZn selectivity Surface characterizations, such as Fourier transform infraredto the zinc and sulfur bulk flotation from lead tailings Collector butyl xanthate dosage of 200 (g / t) and foaming agent pine oil of 15 (g / t) are determined in the test The results are shown in Fig 4 ClosedCircuit Test On the basis of the condition test and opencircuit test, the whole process of closedcircuit test is carried outPreferential Flotation of a Refractory CuPbZn

  • Flotation properties of a particular type of sphalerite

    Flotation tests were carried out with purified sphalerite by microflotation technique Sphalerite can be floated with xanthates in the absence of activators and zinc sulfate is the most effective depressant for this selected sphalerite Collectorless flotation is also possible especially in acidic pH valuesTtest statistical analyses for data from sphalerite grain surfaces from concentrate/tail flotation tests All data in the tests were normalized by the total ion intensity and area The surface components in bright green are considered to be statistically different between the concentrate and tail samplesSurface chemistry in relation to flotation selectivity

  • STATISTICAL SIGNIFICANCE TESTING OF THE PARTICLE

    Flotation is the most widely used separation process for the recovery of sphalerite from low grade complex PbCuZn ores Column flotation which is a patented process since 1962have accomplished substantial industrial application over mechanical flotation since 1981 (Wheeler, 1988) Ameliorated concentrate grades and recoveriesThe collected flotation sphalerite and the Fedoped sphalerite left at the bottom of the flotation tank were filtered and dried and the flotation recovery of the Fedoped 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 thoseMechanism Study of Xanthate Adsorption on Sphalerite

  • Selective separation of galena and sphalerite from pyrite

    achieving an optimum flotation test condition, the effect of auxiliary collector types and pH were evaluated on the flotation of galena, pyrite and sphalerite 2 Materials and Methods 21 Characteristics of pyriterich leadzinc sample A representative pyriterich leadzinc sample was obtained from themineralogy and zinc and iron content of sphalerite A series of batch flotation test were used to evaluate the behavior of main ore minerals: sphalerite and galena Obtained data was used to create floatability component models that were further applied in simulation by HSC Chemistry 71 to give forecast of grades and recoveries in full scaleMASTER'S THESIS

  • University of Nevada Application of Flotation Kinetics to

    The flotation rates of quartz, sphalerite, galena, and the samples of copper ores which were examined, follow a first order rate equation of the type separation efficiency of a flotation test for which we know the flotation rate constants and maximum recoveriesIn this study, flotation behavior of sphalerite upon lead activation was studied Sodium hydrogen phosphate was applied as a main depressant to test its effect on improving PbZn selectivity Surface characterizations, such as Fourier transform infraredDepression of Leadactivated Sphalerite by Sodium

  • Flotation Behavior of Complex Sulfide Ores in the

    flotation was demonstrated during single and artificially mixedmineralsflotationtests[5]Chitosanhasbeenreported this study was aimed to test the selective depressing ability of chitosan in real sulfide ores ,sphalerite(ZnS),pyrite(FeS 2),dolomite (CaMg(CO 3) 2FLOTATION TEST Flotation of copper leadzincores presents one of the most complicated problems in base metal metallurgy, due to the similar floatability of copper and zinc minerals This is especially true when oxidation has caused dissolution of some of the copper, which activates the zincFlotation experiment research on a polymetallic sulfide

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