modifiers for chalcocite flotation

International Journal of Sciences Basic and Applied

International Journal of Sciences Basic and Applied Research (IJSBAR) (2017) Volume 34 No 2 pp 145 165 146 This has allowed companies to sustain their mining operations and the livelihood

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Centenary

Richardson and Walker showed that the flotation of chalcocite bornite chalcopyrite and pyrite with potassium ethyl xanthate is controlled by the conditioning potential similar to earlier findings by Heyes and Trahar The active surface entities for chalcocite and bornite

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selective flotation galena

Dextrins as selective flotation depressants for sulfide minerals 275 RESULTS AND DISCUSSION The results of flotation of chalcocite and separately galena both with xanthate and dextrins are presented in Figs 1 2 respectively They show that the depression of flotation of the investigated sulfides appears at a rather high about 20 kg/ton

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Froth flotation Hyperleap

The concentration of copper in ores averages only 06% and most commercial ores are sulfides especially chalcopyrite (CuFeS 2 ) bornite (Cu 5 FeS 4 ) and to a lesser extent covellite (CuS) and chalcocite (Cu 2 S) These minerals are concentrated from crushed ores to the level of 1015% copper by froth flotation or bioleaching

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Influence of Frothers on the Flotation of Black Mountain Ore

Abstract Froth flotation is the most widely used industrial process for the separation of finely divided minerals from gangue However its effectiveness depends on the type of frothers used The aim of this study was to evaluate the effectiveness of 2 Senfroth frothers XP200 and XP 516 on the flotation of black mountain ore to

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DEXTRINS AS SELECTIVE FLOTATION DEPRESSANTS FOR SULFIDE

Dextrins as selective flotation depressants for sulfide minerals 275 RESULTS AND DISCUSSION The results of flotation of chalcocite and separately galena both with xanthate and dextrins are presented in Figs 1 2 respectively They show that the depression of flotation of the investigated sulfides appears at a rather high about 20 kg/ton

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Surface Characteristics and Flotation Behaviour of Low

Evaluation possibility of low grade manganese mineral from Hunan by froth flotation technique was investigated Manganese mineral sample was characterized with mineralogical analysis XRD and SEM studies for its mineral content and surface characteristics XRD analysis showed that the gangue contents of manganese minerals are constituted mainly by dolomite as a carbonate mineral quartz and

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MINERALS MATERIALS AND INDUSTRY

the same by flotation Malachite is the predominant copper mineral in the oxidized capping whereas chalcopyrite and pyrite are the principal minerals in the primary ore zone 1 In the secon dary enrichment zone where the present mining activities are going on copper occurs not only as chalcopyrite but also as covellite and chalcocite Apart

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Investigation of Flotation Parameters for Copper Recovery

Investigation of Flotation Parameters for Copper Recovery from Enargite and Chalcopyrite Mixed Ore Kazutoshi Haga+ William Tongamp and Atsushi Shibayama Faculty of Engineering and Resource Science Akita University Akita 010 8502 Japan

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what ph is commonly used in copper ore flotation

the average grade of copper ore mined in the The flotation process is also widely used in pH modifiers include lime (CaO) Soda ash (Na Read More Homepage what ph is commonly used in copper ore flotation pper ores

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Optimisation of Spodumene Ore Flotation using Zeta Potentials

and iron) sparked noticeable peaks of froth flotation usages in large scales in 1960 and 1980 There are six types of reagents used in froth flotation; these are activators depressants collectors flocculants frothers and modifiers Collectors are used to bond with minerals at

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Depression of pyrite in porphyry copper flotation

Depression of pyrite in porphyry copper flotation Ian Wark Research Institute Australian Research Council Special Research Centre For Particle and Material Interfaces M Zanin and S Farrokhpay Case Study High pyrite recovery in Cu/Mo operation 4800 tph d80 = 150 µm Polishing Mills FINAL TAIL SCAVENGER FINAL CON CLEANER COLUMNS FEED ROUGHER 20 % Cp Ball Mills 16 % Py

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The depression of pyrite in selective flotation by

Fuerstenau et al (2007) studied the flotation of pyrite at different pH conditions with various xanthate concentrations and the results are shown in Fig 1At low xanthate concentrations pyrite flotation presents two maximums at around pH 4 and 8 with depression around pH 7

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Lime use and functionality in sulphide mineral flotation

Lime in flotation as a pH modifier can also regulate not only collector adsorption but also the effect of other commonly used depressants such as sodium sulphide or sodium cyanide (Yoon 1981 Ghiani et al 1984 Wang and Forssberg 1996) Cyanide acts by dissolving copper from the surface of the activated sulphides thus preventing

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US5110455A Method for achieving enhanced copper

The present invention involves a method for separating copper sulfide from rimmed iron sulfide by flotation Prior to flotation a slurry containing the sulfides is oxidized and conditioned to achieve a pH greater than pH 9 Thereafter the slurry is subjected to a froth floatation process by which a copper sulfide such as chalcopyrite concentrate is recovered

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Flotation Conditioners Modifiers Activators Depressants

This branch of chemicals will prepare the mineral surface so other reagents will be able to collect the metal For Conditioners and Modifiers it may be simply cleaning the surface of the particles as in the case of removing oxidization or it may be a chemical that these are the chemicals that bind the mineral to the air bubble to be lifted away from the waste

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Froth flotation of copper sulfide ores with lignin sulfonates

The surface modifier also may be added directly with the promoter It may be also used by direct addition to the flotation cell just prior to or during flotation It may be fed in these operations in dry form as a paste or in water solution the latter being preferred in most cases in view of the solubility of the lignin sulfonates and hence

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1 Froth Flotation Fundamental Principles

1 Froth Flotation Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry The particles with attached air

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AXIS HOUSE

REO FLOTATION With a pioneering approach to Rare Earth Oxides (ROE) Axis House has developed specific reagents for the separation of ROE into mixed concentrates BASE METAL SULPHIDE FLOTATION Axis House supply a range of selective sulphide collectors for the flotation of

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The effect of underground mine water on performance of the

on flotation performance The adverse effect of the underground water was successfully negated by adding lime into the primary ball mills and increasing the pH of the slurry from a natural pH of 8 to the flotation pH of 105 Traditionally the pH modifier quicklime had been added downstream of the milling Changing

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Flotation Collectors Mineral Processing Metallurgy

Simply said; a Flotation Collectors is a chemical used to make the surface of minerals which is metallic hydrophobic or in laymans term afraid of water or water hating as others like to say This chemical used will behaved in a way as a wax would when you applied it to your car After wax (or hydrophobic agent) is adhered to the surface that surface with see water pearl away

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FROTH FLOTATION RECENT TRENDS Flotation of Sulphide Ores

beneficiation plants all adopting froth flotation technology The phenomenal progress is a result of HZL's emphasis on research and development with an objective to improve the efficiency and to optimize performance and to seek innovative modern technology and control systems in their flotation plant and processes This has not only solved

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Mineral Flotation International Mining

For more than a century now flotation has been at the heart of the mineral processing industry In this months SPOTLIGHT FEATURE ARTICLE direct from the November issue of INTERNATIONAL MINING magazine John Chadwick examines new technologies and applications from some of the key players in mineral flotation a technique that is so important to the global industry

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Possibility of sodium cyanide elimination from a flotation

Possibility of sodium cyanide elimination from a flotation process Ahmad K CDarban 1 Abstract In base metals concentration using flotation technique pyrite decreases the quality of metal concentrates and increases the amount of sulfur compounds

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flotation parameters for copper sulphide ore

Copper Flotation Parameters Of Chalcocite Ore 2019 9 29 Copper flotation parameters of chalcocite ore parameters and maximum recovery oresthe effects of flotation reagent and the Characteristics of flotation machine and effects of various parameters such as the properties of porphyry copper ore and a complex sulphide ore Read More

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Optimization of reagent dosages for copper flotation using

important part of the flotation process In commercial plants the control of reagent additions is the most important aspect of the flotation strategy Reagent schemes used for the treatment of porphyry copper and copper molybdenum ores are relatively simple and usually involve lime as a modifier xanthate

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Adsorption of dextrin onto sulphide minerals and its

On the basis of this research it has been possible to provide a rational interpretation of all data pertaining to chalcocite heazlewoodite differential flotation and to improve the selectivity of such separation with the use of dextrin as Ni3S2 depressant in the alkaline pH range A significant link has been established between the results of

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MINERALS MATERIALS AND INDUSTRY

the same by flotation Malachite is the predominant copper mineral in the oxidized capping whereas chalcopyrite and pyrite are the principal minerals in the primary ore zone 1 In the secon dary enrichment zone where the present mining activities are going on copper occurs not only as chalcopyrite but also as covellite and chalcocite Apart

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Optimization of reagent dosages for copper flotation using

important part of the flotation process In commercial plants the control of reagent additions is the most important aspect of the flotation strategy Reagent schemes used for the treatment of porphyry copper and copper molybdenum ores are relatively simple and usually involve lime as a modifier xanthate

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04 Flotation Modifiers Acid Ph

04 Flotation Modifiers Free download as Powerpoint Presentation (ppt) PDF File (pdf) Text File (txt) or view presentation slides online Scribd is the world's largest social reading and publishing site

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