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chalcopyrite flotation chalcopyrite

chalcopyrite flotation chalcopyrite

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,

Flotation separation of chalcopyrite from galena using ...

2021-11-22 · In a typical single mineral flotation test, the chalcopyrite or galena sample (2.0 g) and DI (40 mL) were added to the flotation tank, the pH of the suspension was adjusted by H 2 SO 4 and NaOH, and the mixture was stirred for 2 min. Afterward, LBG was added and stirred for 3 min to ensure full interaction with the mineral sample. Next, SBX and ...

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

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.

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

Selective flotation of chalcopyrite and molybdenite using ...

2018-6-15 · Hydrogen peroxide (H 2 O 2) has been used as an oxidizing agent in the selective flotation of chalcopyrite and molybdenite.However, this method required relatively high concentration of H 2 O 2 to deliver flotation results (i.e., mineral grades and recoveries) comparable to those obtained by the conventional copper-molybdenum (Cu-Mo) ores flotation using sodium hydrosulfide (NaHS).

Selective flotation of chalcopyrite and molybdenite with ...

2017-1-1 · The selective flotation of chalcopyrite (CuFeS 2) and molybdenite (MoS 2) was studied using surface oxidation treatments (i.e., ozone (O 3) and hydrogen peroxide (H 2 O 2)).The results indicated that the oxidation treatments had different effects on the wettability of chalcopyrite and molybdenite.

Influence of galvanic interaction between chalcopyrite and ...

Chalcopyrite is often associated with galena in nature, which brings great difficulties to the flotation recovery of chalcopyrite. One of the main reasons for these difficulties is that galvanic interaction between chalcopyrite and galena has a significant effect on the oxidation and flotation behavior of chalcopyrite.

X-PEEM, XPS and ToF-SIMS characterisation of xanthate ...

2015-5-1 · X-PEEM, XPS and ToF-SIMS were used to explain the flotation behaviour of chalcopyrite. • XPS analysis showed the presence of only Cu I oxides at Eh − 100 mV SHE.. X-PEEM analysis showed the presence of Cu II oxides at Eh − 100 mV SHE.. Xanthate was desorbed from chalcopyrite surface at Eh − 100 mV SHE.. Extensive oxidation of Cp particles caused a decrease in recovery at Eh − 100

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

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.

Chalcopyrite (Cu) Sphalerite (Zn) Separation by Flotation

2016-4-14 · REGRIND AND SELECTIVE FLOTATION. The bulk copper-zinc concentrate after thickening is reground to all minus 325 mesh. Even at this grind microscopic examination shows inclusions of chalcopyrite in sphalerite grains. Zinc sulphate and

Dual effects of sodium sulfide on the flotation behavior ...

2014-5-7 · This study explores the flotation behavior of chalcopyrite in the presence of different concentrations of sodium sulfide (Na 2 S·9H 2 O) at pH 12 under controlled potential conditions. 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.

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.

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 ...

The selective effect of food-grade guar gum on ...

2018-10-2 · The flotation separation of chalcopyrite from monoclinic pyrrhotite using food-grade guar gum (FGG) as a depressant was studied through flotation tests, kinetic studies, dynamic potential measurements, adsorption experiments, and infrared spectral analyses. The microflotation results showed that the flotation separation of chalcopyrite from monoclinic pyrrhotite could not be realized by

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 ...

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 ...

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

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

Fundamental Flotation Behaviors of Chalcopyrite and

Copper and lead are two important and widely used metals in industry. Chalcopyrite (CuFeS2) is associated with galena (PbS) in ore, and it has been a research hotspot in separating galena from chalcopyrite by flotation. In this study, the flotation behaviors of chalcopyrite and galena were studied through flotation tests, adsorption measurements, solution chemistry calculation, Fourier ...

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.

Dual effects of sodium sulfide on the flotation behavior ...

2014-5-7 · This study explores the flotation behavior of chalcopyrite in the presence of different concentrations of sodium sulfide (Na 2 S·9H 2 O) at pH 12 under controlled potential conditions. 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.

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 ...

The role of oxidizer in the flotation separation of

2021-9-4 · The chalcopyrite and galena flotation separation can be realized by using large doses of sodium lignosulfonate. On the premise of using the oxidant H 2 O 2 , a small amount of sodium lignosulfonate can depress galena completely, but has a weak depression effect on chalcopyrite.

The selective effect of food-grade guar gum on ...

2018-10-2 · The flotation separation of chalcopyrite from monoclinic pyrrhotite using food-grade guar gum (FGG) as a depressant was studied through flotation tests, kinetic studies, dynamic potential measurements, adsorption experiments, and infrared spectral analyses. The microflotation results showed that the flotation separation of chalcopyrite from monoclinic pyrrhotite could not be realized by

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 ...

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

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

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