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overdosing xanthate in the flotation of copper sulphides

  • Flotation of Mixed Copper Oxide and Sulphide Minerals With

    Addition of PAX was used to floatthe sulphide copper and AM28 to float oxide copper at the sametime. The pH of the pulp for flotation was the natural pH of theground ore, at approximately pH 8.1. The conditioning and flota tion times to collect each concentrate

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  • Use of xanthogen formates as collectors in the flotation

    Good flotation of copper sulfides with concurrent rejection of pyrite is a highly desired goal in copper sulfide flotation. Table 3 was developed to compare the relative floatabilities of chalcopyrite or chalcocite with that of pyrite using the ratios of their flotation recoveries and rates as the criteria of merit.

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  • Flotation of a copper sulphide ore from Okiep using thiol

    Thiol collectors are used in the froth flotation of copper sulphide ores. The xanthates, dithio phosphates and dithiocarbamates are classes of thiol collectors that each form different surface products on different copper sulphide minerals.

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  • Evaluation of sodium isobutyl xanthate as a collector in

    Abstract. The dosage of a collector is an important factor that determines the efficiency of a froth flotation process. The representative sample of the carbonatitic Palabora copper ore ground 45 % passing 75 181;m was froth floated with sodium isobutyl xanthate (SIBX) collector at

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  • FROTH FLOTATION RECENT TRENDS Flotation of Sulphide

    Sulphide ores are major sources of base metals like Copper, Lead, Zinc, Nickel, Cobalt etc. Beneficiation of these base metal sulphide minerals is predominating through froth flotation technique.

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  • CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

    CHAPTER 7 FLOTATION OF SULPHIDE MINERALS Contents Xanthate adsorption. Oxidation reactions. Activation amp; depression. In the xanthate copper system cuprous xanthate is formed by the following reaction with respect to xanthate ion. Flotation of pyrite is possible below pH 11 with short chain xanthates, but is depressed above

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  • Flotation of Nickel Copper Sulphide Ore Optimisation of

    Keywords flotation, process optimization, Taguchi orthogonal array, ANOVA. 1. Introduction Froth flotation is widely used for separating base metal sulphide minerals in complex ores. One of the major challenges faced by the flotation of these ores is the ever varying grade and mineralogy as the ore is exploited (Kabuda et. al., 2011).

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  • THE EFFECT OF SULPHITE ON THE XANTHATE INDUCED

    The effect of sulphite on the xanthate induced flotation of copper activated pyrite 187 All chemicals were of analytical grade. Cupric nitrate (Cu(NO 3)2 183; 3H 2O) was used to introduce copper ions during the conditioning time.

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  • Introduction to Mineral Processing Chevron Phillips Chemical

    In ore beneficiation, flotation is a process in which valuable minerals are separated from worthless material or other valuable minerals by inducing them to gather in and on the surface of a froth layer. Sulfide and non sulfide minerals as well as native metals are recovered by froth flotation.

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  • copper ore flotation reagents sodium isopropyl xanthate

    For example, froth flotation is a technique commonly used in the mining chemicals are used in the froth flotation of metallic ore of uranium, copper, The flotation chemicals are mainly Isooctyl Acid Phosphate, Sodium Isopropyl Xanthate

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  • Xanthate series QINGDAO SUNRUN CHEMICAL INDUSTRY CO

    Sodium ethyl xanthate is a collector with better selectivity, widely applied in flotation of Cu/Zn/ Ne and pyrite, especially for the gold flotation in gold and copper mine.It could make good result in the copper and lead oxidized ore.

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  • Copper Sulfide Flotation Mineral Processing amp; Metallurgy

    Copper Sulfide Flotation Reagents Lime is added to the Ball Mill by a Cone Type Dry Reagent Feeder. Other reagents, such as cyanide, xanthate, and a frother are fed and controlled by No. 12A Wet Reagent Feeders to the classifier and to the conditioner ahead of flotation.

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  • Dual effects of sodium sulfide on the flotation behavior

    It was observed that the flotation of chalcopyrite is not depressed completely when the pulp potential is low, even at high concentrations of sodium sulfide, i.e., 10 1 10 2 mol/L. However, a partial and controlled oxidation of pulp does enhance the effectiveness of sodium sulfide

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  • 1 Froth Flotation Fundamental Principles

    After carrying out a froth flotation separation, the products are as shown in Table 1. Using this data, calculate (a) Ratio of concentration (b) % Metal Recovery (c) % Metal Loss (d) % Weight Recovery, or % Yield (e) Enrichment Ratio Table 1 Grade/recovery performance of a

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  • Froth flotation

    Froth flotation cells to concentrate copper and nickel sulfide minerals, Falconbridge, Ontario. Froth flotation is a process for separating minerals from gangue

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  • The solution electrochemistry of sulfide xanthate cyanide

    Ferrocyanide had virtually no depressing effect on the copper minerals in the samples tested. The copper sulphides depressed by thioglycollate were readily floated following an addition of xanthate.

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  • Hydrosulphide Depression of Copper sulphide Minerals

    To elucidate the mechanisms of sulfide mineral depression, the U.S. Bureau of Mines examined the depressant effect of hydrosulfide on flotation of copper sulfides, using electrochemical techniques and flotation tests. Hydrosulfide addition is commonly used to

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  • Role of surface chemistry of fine sulphides in their

    phosphate components. For sulphides an additional serious problem is the increased oxidation of fines. Oxidized portions of the sulphide ores are oft~n concentrated in the sub sieve fractions. Although some amount of oxidation is considered beneficial for the flotation of sulphides

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  • Sulphide Ores Corporate

    Optimize your recovery and reagent consumption for sulfide ores with customized technical solutions. Clariant Mining Solutions HOSTAFLOT174; collectors are formulated to achieve the best possible recovery and grade in your copper flotation operations, whether processing primary, secondary or oxide copper mineralization. Sulphide Ores.

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  • Flotation of Mixed Copper Oxide and Sulphide Minerals With

    Flotation of mixed copper oxide and sulphide minerals with xanthate . 98.16% Cu. Test D was repeated and the concentrate from the rougher scavenger test was cleaned using one stage.4%.2% and 89. 10 compares the graderecovery relationship between the three composite samples.

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  • RU2672895C1 Method of flotation of sulphide copper

    The closest analogue, taken as a prototype, is a method for flotation of sulphide copper nickel ore comprising grinding the ore and conditioning in the presence of sulfhydryl collector butyl potassium xanthate and introducing the blowing agent into the flotation pulp T 80.

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  • Flotation of Mixed Copper Oxide and Sulphide Minerals With

    Flotation of mixed copper oxide and sulphide minerals with xanthate . 98.16% Cu. Test D was repeated and the concentrate from the rougher scavenger test was cleaned using one stage.4%.2% and 89. 10 compares the graderecovery relationship between the three composite samples.

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  • CopperMolybdenum Sulphide Ore by Flotation mdpi

    potential depressant in the differential flotation separation of Cu Mo sulfides. Sodium alginate (SAG) is one of the special polymers mentioned above, and SAG mainly includes red algae, green algae, seaweed glue, brown algae, etc. [14].

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  • RECYCLING PROCESS WATER IN COMPLEX SULPHIDE ORE

    SULPHIDE ORE FLOTATION . F K Ikumapayi. 1, M Makitalo. 2, B Johansson. 3. and K HanumanthaRao. calcium and sulphate ions in process water on xanthate collector adsorption and flotation response Dosages of collectors in a three stage sequential copper lead flotation are .

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  • Flotation of mixed copper oxide and sulphide minerals with

    Flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors K. Leea, D. Archibaldb, J. McLeanc, Copper sulphide ores Flotation collectors Mineral processing Alkyl hydroxamates to sulphide ore with xanthate collector, the oxide ore with

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  • The Solubility of Zinc Ethyl Xanthate in Water

    ethyl xanthate was chosen because of its relatively high solubility compared with other heavy metal xanthates. The method of preparing zinc ethyl xanthate is very simple in that it is formed by a double decomposition of two soluble salts. A stochiometric excess of potassium ethyl xanthate dissolved in water was added to solution of zinc nitrate.

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  • STUDIES OF ACTIVATION OF GALENA BY COPPER AND

    Although copper sulfate has been used as an activator many years before xanthate were adopted to flotation, it is believed that copper activation of galena was accidentally introduced to

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  • FLOTATION OF SULPHIDE ORES DAVID WESTON

    Aug 03, 19710183;32;Referring to the drawing, in this preferred procedure which is applied to the flotation of copper and nickel sulphides from its ore, the wet grinding and first conditioning step are carried out simultaneously, the ore being fed to a wet grinding system together with a wetting agent, at least one alkaline reagent, and an activator for the nickel sulphide minerals, namely copper sulphate.

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  • Kinetic Studies of Sulfide Mineral Oxidation and Xanthate

    Froth flotation is a commonly used separation technique, which requires the use of several reagents to float and depress different sulfide minerals. Xanthate, a thiol collector, has gained immense usage in sulfide minerals flotation. However, some sulfides are

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  • THE INFLUENCE OF XANTHATE AND THIONOCARBAMATE ON

    A few month ago, I have written a short article in which I showed the results of an industry survey of the flotation process of sulphide copper ore, using two types of collectors, xanthates and

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  • Flotation of mixed copper oxide and sulphide minerals with

    The copper sulphides present in the blend were bornite and chalcopyrite, while the oxides were malachite and minor azurite.From previous flotation investigations of mixed copper oxide and sulphide

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  • Flotation of an Oxidized Copper Sulfide Ore seipub

    sodium sulfide as a sulfidizing agent for flotation of oxidized copper ores (Cao et al., 2016, Qu et al., 2012; Chekushin et al., 2015). Copper mineralization occurrences in Sudan were recorded in many localities of the country.

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  • Sodium ethyl xanthate

    Sodium ethyl xanthate is predominantly used in the mining industry as flotation agent for recovery of metals, such as copper, nickel, silver or gold, as well as solid metal sulfides or oxides from ore slurries. This application was introduced by Cornelius H. Keller in 1925.

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  • Oxidation of ethyl xanthate on platinum, gold, copper, and

    Oxidation of ethyl xanthate on platinum, gold, copper, and galena electrodes. Relation to the mechanism of mineral flotation

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  • Froth flotation

    The development of froth flotation has improved the recovery of valuable minerals, such as copper and lead bearing minerals. Along with mechanized mining, it has allowed the economic recovery of valuable metals from much lower grade ore than previously.

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  • flotation of gold sulfide pax perkinspreschool

    Feb 09, 20180183;32;Flotation of mixed copper oxide and sulphide minerals Axis House Sherwood Copper's Minto Mine processes a high grade coppergold deposit and sulphide minerals using flotation by blending their primary sulphide ore with oxide ores. . xanthate (PAX) and potassium n octyl hydroxamate (AM281) were.

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  • Free Residual Xanthate Measurement in Flotation Circuit

    Free Residual Xanthate Measurement in Flotation Circuit (24 replies) The supergene ore may be unpredictable on terms of copper species or xanthate robbing gangue species. If you monitor the free xanthate you should be able to react faster to the changes and maintain a consistent recovery of the sulphide portion.

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  • Acid leaching of oxidesulfide copper ore prior the

    Acid leaching of oxidesulfide copper ore prior the flotation A way for oxidesulfide copper ore, used in the experimental part, was taken from the current mine works in the ethyl xanthate (PEX) as the collector, and the DOW 250 as the frothing agent. These chemicals were of a tech

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