Collectors In The Flotation Of Copper
- صفحه اصلی
- Collectors In The Flotation Of Copper
Key words: copper oxide; combined collector; flotation; adsorption; infrared spectroscopy 1 Introduction Copper is an indispensable industrial material and a vital strategic resource for the development of national economy, national lives, and defense-related science [1]. Although most of the copper metal is extracted from copper sulfide ...
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Hydrophobicity of copper can be enhanced by the addition of generic collectors for sulphide minerals such as xanthate and dithiophosphates or specific collector for oxide copper minerals such as hydroxamate etc. Thiol collectors were used in the froth flotation of copper sulphide from the slag.
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The effect of sodium butyl xanthate (NaBX) and dodecylamine (DDA) as combined collector on the sulphidizing flotation of copper oxide was investigated by flotation test, fluorescent pyrene probe ...
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The most important sulfide mineral collectors have been the sulfhydryl collectors, and this study will focus on five common collectors of this type (xanthate, dixan- thogen, dithiophosphate, thionocarbamate, and xanthogen ethyl formate) for the flotation of the common copper sulfide minerals ( chalcopyrite, chalcocite, bornite and …
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Flotation is the traditional process used for concentrating sulfide ores, based on the differences in hydrophobicity exhibited by the minerals which are enhanced by collectors. Xanthates are the collectors widely used in the flotation of minerals such as common sulfides (Cu, Mo, Pb, Zn, Co, Ni) and native metals. However, xanthates have …
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Simply said; a Flotation Collectors is a chemical used to make the surface of minerals, which is metallic, hydrophobic or in layman's term 'afraid of water' or 'water hating' as others like to say. ... especially with copper carbonates, which are generally unaffected by the lower xanthates. In the selective flotation of a clean ...
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The best overall copper sulfide collector was an imidazoline (1-Hy doxy ethyl - 2-Heptadecenyl), but it also proved to be an excellent collector for pyrite. Its potency as …
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The collecting activity of ethyl xanthate, diethyl dithiophosphate, and diethyl dithiocarbamate was estimated on the example of copper flotation in . It is argued that, contrary to expectations, dithiocarbamate turned out to be the weakest collector. A similar sequence of increasing the force of flotation collectors was also found in .
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Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are ...
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Xanthates are the most commonly employed collector for copper sulfide minerals flotation [11]. Nevertheless, their selectivity is low if no additional depressant is added because they have strong interaction with other sulfide minerals such as sphalerite, galena and pyrite [12]. Therefore, it is difficult to realize the selective separation of ...
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The results of collector dosage on flotation behavior of copper slags. 3.2.2. Open-circuit contrast tests. ... To verify the phenomenon, the flotation of copper slags was optimized through the process flow of primary roughing and tertiary scavenging. The flow chart is shown in Fig. S2.
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Commonly used collectors for direct flotation of copper oxide mineral include fatty acids [11], phosphate esters [12], [13], fatty amines, petroleum sulfonates, and hydroxamic acids [14]. Among these, only the fatty acid flotation method has been widely applied in industrial settings. Therefore, further research needed to surmount the ...
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The flotation of four copper sulfide minerals (chalcopyrite, chalcocite, bornite, covellite) and pyrite with xanthates shows that a minimum in the collector concentration necessary for flotation usually occurs at about C-5 (amyl) to C-8 (octyl) for the straight chain xanthates.
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Especially adapted to flotation of copper and gold ores in lime circuit. Non-frothing promoter. Minerec 27: Similar to Minerec A & B: Undiluted liquid .05 to .25: Powerful and selective collector for flotation of copper ores. Nacconol NR: White flaky solid. Sodium alkylated aryl sulfonate. 1-5% solution. – to .5
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Furthermore, overdosing of frothers (mainly frother-collector type) may interrupt the selective action of the main collector, causing a decrease in flotation recovery due to the recovery of gangue particles (Kosior et al., 2013, ... Cyclic alcohols are used in copper ore flotation as secondary (supporting) collectors.
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Safe Handling of Orica Flotation Reagents 1 1.1 Collectors 3 1.2 Frothers 3 1.3 Suggested PPE 3 1.4 Safe Practice 4 2. First Choice Guide – Specialty Collectors and Frothers 5 3. ... It is good for copper, zinc, silver and nickel flotation, especially where activated minerals are present and selectivity is an issue. DSP 011
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The dominant challenge of current copper beneficiation plants is the low recoverability of oxide copper-bearing minerals associated with sulfide type ones. Furthermore, applying commonly used conventional methodologies does not allow the interactional effects of critical parameters in the flotation processes to be investigated, …
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YK1-11: Preferential copper selection collector. Ester-105: It has selectivity and ing property to reduce the cost of reagents and improve the mineral processing index. DMDC: It has a strong collection capacity for copper and a weak collection capacity for pyrite and unactivated sphalerite. It can be used for copper and sulfur …
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Ammonium sulfate [(NH 4) 2 SO 4] is an effective activator of malachite sulfidization flotation.In this work, we explored the effects of ammonium ion (NH 4 +) and copper ion (Cu 2+) on malachite sulfidization flotation and investigated the underlying mechanism.Flotation experiments demonstrated that NH 4 + can not only eliminate the …
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Collectors are basically organic chemical compounds, which differ in chemical composition and function. The basic purpose of the collector is to selectively form a hydrophobic …
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The flotation methods of copper oxide minerals and the interaction mechanism with reagents are reviewed in detail. Flotation methods include direct flotation (using chelating reagents or a fatty acid as collector), sulfidization flotation (using xanthate as collector), and activation flotation (using chelating reagents, ammonium/amine salts ...
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of 4.25·10-5 M and used as a main collector. Flotation reagent Oksal T-92 (mixture of polyhydric alcohols, aqueous solution) was used as a -forming agent (concentration 1·10-5 M). The ... 144 Adsorption and flotation of copper sulfide ore with diisopropyldithiophosphate collector International Journal of Biology and Chemistry 11, …
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SIERRA GORDA – ORE RESERVE DECLARATION AND MINERAL RESOURCE UPDATE. The grade control model provides input to the grade of the …
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immmolu J~Mt OF minERAL PROtENNIH6 ELSEVIER Int. J. Miner. Process. 50 (1997) 275-287 Flotation of oxidized minerals of copper using a new synthetic chelating reagent as collector M. Barbaro a,*, R. Herrera Urbina u C. Cozza a D. Fuerstenau c A. Marabini a a CNR - Istituto Trattamento Minerali, Via Bolognola, 7 …
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We emphasize that late sulfide saturation in copper-gold-rich intra-oceanic subduction-derived felsic magmas favors upward sulfide transfer via flotation.
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Listed below are the conclusions that can be drawn from this study of xanthogen formates as collectors in the flotation of copper sulfides and pyrite in the range pH 5.0–10.5. (1) The xanthogen formates are good to excellent collectors for most copper sulfides and have the advantage over several common thiol collectors (such as …
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Wills (2006) noted that copper sulfide (Cu 2 S) minerals have good flotation response to anionic collectors such as amyl, iso-propyl and butyl xanthates, and the concentrations of collectors added usually vary between 3 and 300 g per tonne. Rougher concentrates and middlings are usually reground and floated for maximum …
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The collector was regenerated from the solution by removal of methanol by distillation and its reusability was tested in five subsequent ion flotation cycles.The efficiency of the regenerated SDS for the recovery of copper from dilute copper–zinc ammoniacal solutions was similar (ca. 80%) to that of fresh SDS solution without make-up.
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Flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors ... Generally copper oxide minerals do not respond well to traditional sulphide copper collectors and require alternative flotation * Corresponding author. Tel.: +61 3 9794 6200; fax: +61 3 9794 9411. E-mail address: [email protected] (M.A ...
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Herein, 6-butylamino-1,3,5-triazine-2(1H)-thione-4-thiol sodium (BN) was pioneeringly designed as a high-selective collector for copper sulfide flotation. The micro-flotation findings indicated that BN realized an effective separation of chalcopyrite from pyrite under pH ∼ 8.0.
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1.Introduction. Copper (Cu) is a significant metal for the society development and scientific progress, and chalcopyrite is one of the main sources [28].Therefore, the efficient separation and enrichment of chalcopyrite appear to be particularly important, especially the flotation separation of chalcopyrite from sphalerite [47].The traditional …
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Since that time, there has been a significant increase in the availability of selective flotation collectors for gold (Nagaraj, 1997), and these are now widely in use on many large and new copper flotation plants around the world (Damjanovic and Goode, 2000, Winckers, 2002). 1.1. Mineralogy
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The application of new chelating reagents on the flotation of copper minerals has been paid much attention in recent years. These collectors have successfully extracted the copper minerals from ...
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Thionocarbamates are the group of collectors that are mostly used for flotation of sulphide copper minerals, alone or in combination with xanthates depending on a mineralogical composition of the ore.
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A three-factor, three-level, face centered cubic (FCC) experimental design was used to study the effect of important chemical variables—collector chain length, collector concentration and frother type—on the collector properties of the recently developed N-allyl-O-alkyl thionocarbamates (ATC) in copper flotation from a porphyry …
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