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Chalcopyrite Flotation without Collector - Surface Chemistry

2018-10-4  Chalcopyrite Flotation without Collector – Surface Chemistry. It has been reported that chalcopyrite can be floated selectively from an ore containing pyrite,

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Collectorless flotation of chalcopyrite and sphalerite ...

1981-3-1  Flotation of chalcopyrite Two preliminary flotation tests were conducted in parallel on Texasgulf Type-A ore. In both tests, the ore (-10 mesh) was ground for 20 min in the presence of 0.84 kg/ton of Na2 S and floated with 0.04 kg/ton of Dowfroth

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Characterization and Flotation of Sulfur from

2013-12-24  flotation tailings and can be readily recovered by flotation with different flotation reagents. When amyl xanthate is used, 85% of chalcopyrite can be recovered with a copper grade of 14.5% in a single-stage froth flotation. The chalcopyrite flotation concentrate can be

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Enhancing flotation separation of chalcopyrite and ...

2021-3-18  Figure 3 showed the effect of PAAS dosage on the flotation behavior of chalcopyrite, serpentine and talc. The experiment was carried out at pH 7.

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Adsorption characteristics of CN− species on the ...

Chalcopyrite is the main copper bearing mineral in the cyanide tailing. Flotation is a commonly used method in industry in order to recover copper from cyanide tailings. However, the change of surface properties of chalcopyrite caused by cyanide leaching hinders the effective flotation of chalcopyrite.

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Effect of dextrin on flotation separation and surface ...

2020-11-27  The flotation recovery of chalcopyrite and arsenopyrite in concentrate and tailings after flotation of mixed minerals are shown in Table 2. It can be seen from Table 2 that the flotation recovery of chalcopyrite in concentrate products is about 71%, while the flotation recovery of arsenopyrite is less than 29%. Compared with the results of ...

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Effect of copper ions on the flotation separation of ...

2018-1-1  The flotation response of chalcopyrite and molybdenite in the presence of copper ions was investigated through single mineral flotation tests and flotation separation tests. The influence mechanism was studied by adsorption experiments, zeta-potential measurements, and X-ray photoelectron spectroscopy (XPS) analysis.

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The effect of saline water on copper activation of pyrite ...

2019-1-5  1. Introduction. Chalcopyrite, the major mineral for copper production, is often found finely interlocked with iron sulfide minerals, particularly pyrite (Owusu et al., 2014).Pyrite is usually perceived as a gangue mineral and removed by flotation to minimize its contamination in copper concentrates (Wang and Forssberg, 1991).In froth flotation, hydrophobic particles are supposed to attach to ...

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Structural Modification of Xanthate Collectors To

2021-1-15  Structural Modification of Xanthate Collectors To Enhance the Flotation Selectivity of Chalcopyrite Xin Ma,† Liuyin Xia,‡ Shuai Wang,*,† Hong Zhong,*,† and Hui Jia† †College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People’s Republic of China ‡Surface Science, University of Western Ontario, London, Ontario N6G0J3, Canada

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Electrochemical and spectroscopic study of interfacial ...

2016-1-31  Comparative voltammetry and differential double-layer capacitance studies were performed to evaluate interfacial interactions between chalcopyrite (CuFeS 2) and n-isopropyl xanthate (X) in the presence of ammonium bisulfite/39wt% SO 2 and caustic starch at different pH values. Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, contact angle measurements, and

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Enhancing flotation separation of chalcopyrite and ...

2021-3-18  Figure 3 showed the effect of PAAS dosage on the flotation behavior of chalcopyrite, serpentine and talc. The experiment was carried out at pH 7.

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Recover Ultrafine Chalcopyrite by Flotation

2018-4-3  Flotation of ultrafine chalcopyrite can be improved by processing the ore with (1) split-circuit design and (2) intense agitation conditioning before flotation. At equivalent or even lower collector consumption, a split circuit flotation design, treating the plus 38

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Characterization and Flotation of Sulfur from

2013-12-24  flotation tailings and can be readily recovered by flotation with different flotation reagents. When amyl xanthate is used, 85% of chalcopyrite can be recovered with a copper grade of 14.5% in a single-stage froth flotation. The chalcopyrite flotation concentrate can be

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(PDF) A Study of Temperature Effect on the Xanthate’s ...

2020-5-10  adsorption on chalcopyrite surface and, the refore, chalcopyrite flotation. The te sted temperatures are specifically selected from 25 °C to 65 °C becaus e of the potential h igh temperature ...

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Hetero-difunctional Reagent with Superior Flotation ...

In froth flotation, HAOODE exhibited superior recovery for chalcopyrite over pH 3-12 and excellent selectivity for chalcopyrite against pyrite (FeS 2) above pH 10.5, as compared to the conventional reagent sodium isobutyl xanthate. This work provides a useful approach to develop effective reagents that could selectively adsorb on desired ...

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Effects of Sodium Alginate on the Flotation Separation of ...

In this paper, the effect of sodium alginate (SA) on the flotation separation of molybdenite (MoS 2) from chalcopyrite using kerosene as collector was systematically investigated.The results of single-mineral micro-flotation tests indicated that SA exhibited strong depression on chalcopyrite flotation while it imposed no impact on the floatability of molybdenite.

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Effect of dextrin on flotation separation and surface ...

2020-11-27  At present, the most commonly used technology to separate copper-bearing ore from other ores is froth flotation (Liu et al. 2017), and separation of different ores is a common problem in flotation process.However, in the flotation separation of chalcopyrite and arsenopyrite, it is difficult to separate chalcopyrite and arsenopyrite because of the similar floatability of chalcopyrite and ...

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(PDF) The Auxiliary Effect of Copper Ions on the ...

The flotation recovery of chalcopyrite under different sodium thioglycolate (STG) concentrations; c(BX) = 1 × 10 −3 mol/L, pH = 10.

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Flotation kinetics and thermodynamic behavior of ...

2018-6-27  facilitating the flotation separation of chalcopyrite and pyrite. The results can help with the theoretical research of flotation separation of other minerals, and provide guidance for developing low alkaline and lime-free pyrite depressants. Keywords: Chalcopyrite, pyrite, high alkaline, flotation kinetics, microcalorimetry, flotation ...

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Electrochemical and spectroscopic study of interfacial ...

2016-1-31  Comparative voltammetry and differential double-layer capacitance studies were performed to evaluate interfacial interactions between chalcopyrite (CuFeS 2) and n-isopropyl xanthate (X) in the presence of ammonium bisulfite/39wt% SO 2 and caustic starch at different pH values. Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, contact angle measurements, and

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Flotation Separation of Chalcopyrite and Molybdenite ...

2020-12-13  Porphyry Cu-Mo deposits, which are the most important sources of copper and molybdenum, are typically processed by flotation. In order to separate Cu and Mo minerals (mostly chalcopyrite and molybdenite), the strategy of depressing chalcopyrite while floating molybdenite has been widely adopted by using chalcopyrite depressants, such as NaHS, Na2S, and Nokes reagent.

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Evaluating the sulphidisation and flotation of oxidised ...

2021-11-12  The flotation of chalcopyrite and sphalerite from copper and copper-zinc ores has been achieved without using thiol-type collectors. Typically, a sulfide ore sample is first treated with sodium ...

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Effects of Xanthate on Flotation Kinetics of Chalcopyrite ...

This paper investigated the effects of using or not using potassium butyl xanthate (PBX) as a collector on the flotation kinetics of talc and chalcopyrite. By means of atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), a contact angle measuring instrument and particle size analyzer, the underlying causes behind the flotation rate changes of talc and chalcopyrite are ...

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A STUDY OF FLOTATION AND LEACHING BEHAVIOUR

2011-3-17  Collectorless flotation of chalcopyrite observed under oxidizing conditions using air is thought to be prevalent even in the presence of a collector obscuring the selectivity of the process. Leaching of the mixtures of bornite and chalcopyrite at mass ratios of 1:1, 1:3 and 3:1 are

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Effects of Sodium Alginate on the Flotation Separation of ...

In this paper, the effect of sodium alginate (SA) on the flotation separation of molybdenite (MoS 2) from chalcopyrite using kerosene as collector was systematically investigated.The results of single-mineral micro-flotation tests indicated that SA exhibited strong depression on chalcopyrite flotation while it imposed no impact on the floatability of molybdenite.

More

Flotation kinetics and thermodynamic behavior of ...

2018-6-27  facilitating the flotation separation of chalcopyrite and pyrite. The results can help with the theoretical research of flotation separation of other minerals, and provide guidance for developing low alkaline and lime-free pyrite depressants. Keywords: Chalcopyrite, pyrite, high alkaline, flotation kinetics, microcalorimetry, flotation ...

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(PDF) The Auxiliary Effect of Copper Ions on the ...

The flotation recovery of chalcopyrite under different sodium thioglycolate (STG) concentrations; c(BX) = 1 × 10 −3 mol/L, pH = 10.

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The depression behavior and mechanism of tragacanth

2021-8-1  The single mineral flotation and artificial mixed minerals flotation experiments were conducted to investigate the effect of TG on flotation separation behaviour of molybdenite and chalcopyrite. The TG’s adsorption mechanism on molybdenite and chalcopyrite was investigated by X-ray photoelectron spectroscopy (XPS) and Time-of-flight secondary ion mass spectrometry (ToF-SIMS).

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Electrochemical and spectroscopic study of interfacial ...

2016-1-31  Comparative voltammetry and differential double-layer capacitance studies were performed to evaluate interfacial interactions between chalcopyrite (CuFeS 2) and n-isopropyl xanthate (X) in the presence of ammonium bisulfite/39wt% SO 2 and caustic starch at different pH values. Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, contact angle measurements, and

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武汉理工大学资源与环境工程学院欢迎您

2019-5-17  Improved understanding of chalcopyrite flotation in seawater using sodium hexametaphosphate. Minerals Engineering, 2019, 134, 269-274. Q1 2.707. 2. Yubiao Li*, Hongduo Wang, Wanqing Li, Clement Lartey, Shaoxian Song. A fundamental study of

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