pyrite flotation optimum

  • Froth Flotation911metallurgist

    Froth Flotation Froth flotation is one of the most versatile and flexible of all mineral separation processes. Grinding an ore has an important influence on flotation. For optimum results valuable minerals should and depresses pyrite. Frothers such as pine oil and Dowfroth 250 are used to create a froth capable of carrying or holding

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  • Study of Flotation Parameters for Copper Recovery from

    grained pyrite performs interstitial microns by size 16 . Intergrowth of pyrite sphalerite tennantite and other copper sulphides difference in their activity and size create the considerable problems in implementation of selective flotation obtaining conditional copper and zinc concentrates.

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  • pyrite flotation parameters

    found that a great effect on copper leaching has the pyrite/flotation tailings ratio. The best results were achieved by sulphating of 5.00 g slag with 2.00 g of pyrite or 3.00 g of tailings. Keywords smelter slag roasting pyrite leaching University in Belgrade Technical Faculty in Bor VJ 12 19210 Bor Serbia

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  • Xanthatean overview ScienceDirect Topics

    Typical groups of flotation collectors are shown in Fig. 4.For industrial sulfide mineral flotation the xanthates and dithiophosphates represent the major classes of compounds used where M is either Na or K and R is a relatively short hydrocarbon chain typically C 2 to C 5 in length. The solubility pH application range physical state (solid or liquid) and adsorption characteristics

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  • Kyanite FlotationMetallurgist Mineral Processing Engineer

    Preliminary batch flotation tests were made of the two ores to determine the optimum conditions for separating the kyanite from the gangue minerals. The use of varying quantities and types of collectors and depressants conditioning at different time and pulp solids and varying the pH of the pulp were investigated. and pine oil for pyrite

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  • Organic Flotation Depressant

    These depressants are organic mixtures reacted with inorganic salts. They have found application for depression of oxidized pyrite marcasite and pyrrhotite during the flotation of Cu Cu-Zn Cu-Pb-Zn and Pb-Zn ores. Some of these depressants have been adapted for depression of zinc during sequential copper zinc flotation. Depressants from the DS series have been successfully applied at

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  • THE SEPARATION OF PYRITE AND ARSENOPYRITE BY FLOTATION

    The experimental data obtained during the previous stages of the project will be assessed to define the optimum conditions for selective arsenopyrite pyrite separation and potentially develop a flotation process flow sheet for the treatment of the Olympias and Stratoni concentrates.

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  • Alternatives for Sodium Cyanide for Flotation Control

    ----- EPA Report No. EPA—600/2—81—157 January 1981 ALTERNATIVES FOR SODIUM CYANIDE FOR FLOTATION CONTROL by E. J. Mezey D. W. Neuendorf C. Ray Smithson Jr. and James F. Shea Battelle Columbus Laboratories Columbus Ohio 43201 Contract No. 68— Project Officer Roger Wilmoth Energy Pollution Control Division Industrial Environmental Research Laboratory

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  • Selective separation of galena and sphalerite from pyrite

    In this research the selective flotation of galena and sphalerite minerals was evaluated from a pyrite-rich lead-zinc sample. An optimum mixture of selective collectors against pyrite and also organic/inorganic pyrite depressants was obtained in the flotation of galena and sphalerite by an experimental mixture design. The effect of different collectors and pH values were investigated in the

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  • Effect of microwave pretreatment on grinding and flotation

    Request PDF Effect of microwave pretreatment on grinding and flotation kinetics of copper complex ore The present work initially studies the kinetics of microwave-assisted grinding and

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  • Mitigation of environmental hazards of sulfide mineral

    finding the optimum conditions for the bulk flotation of galena (PbS) and chalcopyrite (CuFeS 2) through Response Surface Methodology (RSM). In the second project an attempt was made to replace toxic sodium cyanide (NaCN) with the biodegradable chitosan polymer as pyrite depressant. To achieve an optimum flotation performance and

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  • Mineral FlotationMINING

    Nov 01 2011 · "Flotation reagent selection is paramount and test work is necessary to ensure the optimum reagent suite is utilised. If the ore contains a low

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  • Determination of Optimum Parameters for Flotation of

    Jan 31 2019 · 2.1. Effect of Collector Concentration on Flotation Recovery. Xanthates are the salts of xanthic acid (alkyl/aryl dithiocarbonic acid) and are formed through the replacement of two oxygen atoms in carbonic acid by sulfur and replacement of one hydrogen atom by an alkyl/aryl group. 22 They are commonly used as a standard collector for sulfide minerals and their collecting power varies with C

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  • Recovery of pyrite from copper tailings by flotation

    The recovery of pyrite at 5 min of flotation is 97.8 and at 7 min of flotation the maximum estimated recovery of 99.1 is reached. In order to produce a concentrate with a pyrite grade closest to 90 and a recovery above 90 3.5 min were selected for the recleaner flotation stage as the optimum flotation time. 3.3 Determination of the split

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  • Bulk flotation of auriferous pyrite and arsenopyrite by

    Bulk flotation of auriferous pyrite and arsenopyrite by using tertiary dodecyl mercaptan as collector in weak alkaline pulp et al. Bulk flotation of auriferous pyrite and The optimum

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  • Electrolytic flotation of pyrite Journal of Chemical

    Electrolytic flotation a rather unconventional flotation technique used in effluent treatment was investigated on pyrite the process was enhanced by xanthate and also a cationic collector. This was then compared with classical floatability experiments. Zeta‐potential measurements under similar pulp conditions were carried out to explain the process mechanism. The mineral flotation

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  • Flotation of PyriteMetallurgist Mineral Processing

    Effect of Size of Mineral Grain on the Flotation of Pyrite. Sample mixture No. 4 used in these tests was prepared in a manner similar to sample mixtures Nos. 1 2 and 3 except that it was crushed to pass a 48-mesh Tyler standard screen. A partial analysis of the mixed and crushed sample showed 10.70 per cent iron and 0.18 per cent copper.

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  • Correlations between optimum aeration and pyrite content

    In this work the effect of aeration (oxygen purged into the pulp) on the flotation of a chalcopyrite/pyrite mixed mineral system containing different amounts of pyrite (from 0 to 80 wt ) is reported. An optimum level of aeration was found for maximum chalcopyrite/pyrite selectivity.

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  • Organic Flotation Depressant

    These depressants are organic mixtures reacted with inorganic salts. They have found application for depression of oxidized pyrite marcasite and pyrrhotite during the flotation of Cu Cu-Zn Cu-Pb-Zn and Pb-Zn ores. Some of these depressants have been adapted for depression of zinc during sequential copper zinc flotation. Depressants from the DS series have been successfully applied at

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  • Kyanite FlotationMetallurgist Mineral Processing Engineer

    Preliminary batch flotation tests were made of the two ores to determine the optimum conditions for separating the kyanite from the gangue minerals. The use of varying quantities and types of collectors and depressants conditioning at different time and pulp solids and varying the pH of the pulp were investigated. and pine oil for pyrite

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  • A study on the effect of active pyrite on flotation of

    respectively. Under the optimum conditions the grade of final concentrate increased from 0.94 to 21.3 with three cleaner stages. Keywords Active pyrite Chalcopyrite Collector Flotation Optimization 1. Introduction Chalcopyrite is often associated with pyrite which is the most undesirable mineral with the same

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  • Lead-Zinc oresDanafloat

    The flotation collectors used in sphalerite flotation tend to be less powerful because sphalerite at this stage typically readily floats and using a more aggressive collector can float more non-sphalerite minerals. Optimum lead concentrate metallurgy and recoveries are usually achieved using a combination of a xanthate and dithiophosphates.

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  • ARSENOPYRITE ENRICHMENT BY COLUMN FLOTATION

    amines may be beneficial to the process by altering the optimum pH for pyrite flotation achieving possibly some selectivity. TABLE 1 Amines used or studied in relation to flotation 8 . I Amine Ore pH Ref. Armeen 12" chaleopyrite 11 Arquad 12" chalcopyrite I 1 -naphthylamine sulphides 12

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  • (PDF) The Effect of Sulfurization Process on Flotation of

    Flotation was done according to previously obtained optimum flotation conditions. The flotation yield of Cu and Co in concentrate phase was found to be low by collective flotation.

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  • Determination of Optimum Parameters for Flotation of

    Jan 31 2019 · 2.1. Effect of Collector Concentration on Flotation Recovery. Xanthates are the salts of xanthic acid (alkyl/aryl dithiocarbonic acid) and are formed through the replacement of two oxygen atoms in carbonic acid by sulfur and replacement of one hydrogen atom by an alkyl/aryl group. 22 They are commonly used as a standard collector for sulfide minerals and their collecting power varies with C

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  • Effects of type and dosages of organic depressants on

    Effects of organic depressants on pyrite floatation were investigated. After selecting optimum collector and frother type and obtaining the ideal condition for pyrite flotation effects of five organic depressants in three concentrations in the same conditions were discussed. After obtaining optimal condition for pyrite flotation

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  • Pyrite Tailings Recovery by Flotation

    Pyrite has long been used as a source of sulphur and its recovery as a by-product from the flotation of certain base metal ores is a well established practice. Large tonnages of mill tailings which have accumulated as a result of various milling operations frequently contain significant amounts of pyrite. In many instances these tailings can be treated to yield pyrite concentrates that are a

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  • INTERPRETATION OF FLOTATION DATA FOR THE DESIGN

    INTERPRETATION OF FLOTATION DATA FOR THE DESIGN OF PROCESS PLANTS . Robert C Dunne . the development of the optimum flotation process is reliant on pyrite) or as is the case for polymetallic ores a complex three stage sequential separation (ie copper lead zinc).

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  • Flotation Behavior of Complex Sulfide Ores in the Presence

    In this study chitosan polymer was tested as a potential selective green depressant of pyrite in the bulk flotation of galena (PbS) and chalcopyrite (CuFeS 2 ) from sphalerite (ZnS) and pyrite (FeS 2 ) using sodium isopropyl xanthate as a collector and 4-methyl-2-pentanol (MIBC) as a frother. Flotation tests were carried out in a D12-Denver flotation laboratory cell in the presence and

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  • 1. Xanthate Application in Pyrite Froth Flotation

    Pyrite can use xanthate as the collector in acidic neutral and weak alkali slurries. The acid-treated pyrite has good floatability (the optimum pH for the use of xanthate is 4.5). For the flotation of pyrite the ability of xanthate to collect is better than that of dithiophosphate. 2. Xanthate Application in Sphalerite Froth Flotation

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  • THE SEPARATION OF PYRITE AND ARSENOPYRITE BY FLOTATION

    The experimental data obtained during the previous stages of the project will be assessed to define the optimum conditions for selective arsenopyrite pyrite separation and potentially develop a flotation process flow sheet for the treatment of the Olympias and Stratoni concentrates.

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  • Electrochemical reduction of pyrite in aqueous NaCl

    4. Conclusions. Pyrite removal from high-sulfur Nantong coal reaches 85.06 by electrochemical reduction. The optimum conditions are that electrolysis time voltage coal and electrolyte concentrations are 20 min 10 V 60 g L −1 and 1.0 mol L −1 respectively.XRD and chemical analyses shows that the main products from pyrite by electrochemical reduction are FeS and S 2−.

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  • Minerals Free Full-Text The Role of Gangue Mineralogy

    Fluorite CaF2 is considered a strategically important mineral as it is a raw material for many strategic industries. Froth flotation is reported to be the most efficient and economically viable process for the production of an acid-grade product with a CaF2 content of at least 97 . Selective flotation of fluorite from gangue minerals e.g. calcite and barite is challenging because these

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  • Quantum-mechanics of pyrite flotation Journal of Mining

    Mar 01 2014 · Fig. 2. Pyrite and butyl xanthate complex model (a) monodentate (b) bidentate. JOURNAL OF MINING SCIENCE Vol. 49 No. 5 2013 QUANTUM–MECHANICS OF PYRITE FLOTATION 823 Below is the monodentate (top) and bidentate (bottom) schemes of bonding of disulphide and ferrum ion of pyrite cluster.

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  • Flotation Process Galena

    Flotation Process Galena Galena Sphalerite Flotation Separation Method. Several processes have been developed for the separation of lead from zinc sulphides by two-stage selective flotation but the only method that is employed widely enough to warrant a description in these pages is the one whereby the zinc minerals are depressed by sodium cyanide and/or zinc sulphate allowing the galena

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  • Study of Flotation Parameters for Copper Recovery from

    grained pyrite performs interstitial microns by size 16 . Intergrowth of pyrite sphalerite tennantite and other copper sulphides difference in their activity and size create the considerable problems in implementation of selective flotation obtaining conditional copper and zinc concentrates.

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  • INTERPRETATION OF FLOTATION DATA FOR THE DESIGN

    INTERPRETATION OF FLOTATION DATA FOR THE DESIGN OF PROCESS PLANTS . Robert C Dunne . the development of the optimum flotation process is reliant on pyrite) or as is the case for polymetallic ores a complex three stage sequential separation (ie copper lead zinc).

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