Selective chalcopyrite flotation from pyrite with glycerine-xanthate as depressant

Wang, Zhen; Qian, Yunlou; Xu, Longhua; Dai, Bo; Xiao, Junhui; Fu, Kai‐Yuan

doi:10.1016/j.mineng.2015.01.008

Cited by 42 publications

(6 citation statements)

References 19 publications

(19 reference statements)

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“…These data indicate that KG is adsorbed on the surface of talc mainly via chemical adsorption [16]. Considering that the characteristic peaks of talc reacted with PBX are focused on the wavenumbers below 1400 cm −1 and no characteristic peaks of PBX are found in the section, it is reasonable to infer that no PBX is adsorbed on the talc surface [23,25]. The FTIR spectra analysis results are consistent with the flotation and adsorption results.…”

Section: Ftir Spectra Analysissupporting

confidence: 79%

Flotation and Adsorption of a New Polysaccharide Depressant on Pyrite and Talc in the Presence of a Pre-Adsorbed Xanthate Collector

Deng

Tian

et al. 2017

Minerals

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Abstract:The flotation and adsorption of a new polysaccharide konjac gum (KG) on pyrite and talc in the presence of pre-adsorbed potassium butyl xanthate (PBX) is investigated. The micro-flotation results show that KG is a quality depressant for talc and that conditioning the minerals initially with PBX before KG will increase the recovery difference between pyrite and talc. The results of artificially mixing the minerals show that compared with adding KG before PBX, when minerals are pre-adsorbed with PBX, the grade and the recovery of sulfur (S) increases by 1.96% and 5.44%, respectively. The contact angle results show that the addition of PBX before KG will increase the contact angles of pyrite, but the addition order of KG/PBX has little influence on the contact angles of talc. The adsorption tests show that KG can adsorb on pyrite and talc surfaces, while PBX can only adsorb on the pyrite surface. The addition order of KG/PBX affects the adsorption of KG and PBX on the pyrite surface but not on the talc surface. Fourier transform infrared (FTIR) spectra analysis further demonstrates the chemical adsorption of KG on pyrite and talc surfaces, while PBX chemisorbs on the pyrite surface. Based on these analyses, a schematic illustration of the reagent adsorption forms on pyrite and talc surfaces is drawn to explain the competitive adsorption of KG and PBX on mineral surfaces.

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Section: Ftir Spectra Analysissupporting

confidence: 79%

Flotation and Adsorption of a New Polysaccharide Depressant on Pyrite and Talc in the Presence of a Pre-Adsorbed Xanthate Collector

Deng

Tian

et al. 2017

Minerals

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show abstract

“…4. The peaks near 2957.76 cm -1 are the asymmetric elongation vibration of -CH3 and -CH2 (Wang et al, 2015;Zhou et al, 2020). The peaks at 1159.62 and 1100.53 cm -1 are the asymmetric stretching vibration and symmetric stretching vibration of C-0-C, respectively (Zhang et al, 2013).…”

Section: Ftir Analysismentioning

confidence: 98%

Selective flotation separation of chalcopyrite and sphalerite by thermal pretreatment under air atmosphere

Zhou¹,

Geng²,

Zhang³

et al. 2020

Physicochem. Probl. Miner. Process.

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“…With SH as the depressant, the optimal Cu grade of the concentrate is 7.3%, with a Cu recovery of 82.7%, while with the ZnSO 4 as the depressant, the Cu grade is 8.5%, with a Cu recovery of 84.1%. The As grade, and particularly As recovery (58% to 39%), in the concentrate distinctly decreased after replacing SH with ZS, indicating that more arsenopyrite was depressed in the tailings [30]. From both the results of the micro flotation of pure minerals and the bench scale flotation of real ore, ZnSO 4 showed a high-efficiency depression on arsenopyrite flotation and indeed could promote the separation of chalcopyrite from arsenopyrite in SIBX solution at a suitable pulp pH adjusted by Na 2 CO 3 .…”

Section: Bench Scale Flotationmentioning

confidence: 99%

Colloidal ZnCO3 as a Powerful Depressant of Arsenopyrite in Weakly Alkaline Pulp and the Interaction Mechanism

Guan¹,

Ming²,

Xie³

et al. 2020

Minerals

Self Cite

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The effects of ZnSO4 on arsenopyrite depression were studied with sodium carbonate and sodium isobutyl xanthate (SIBX) as the pH regulator and collector, respectively. In both micro and real ore flotation tests, ZnSO4 showed better depression on arsenopyrite (pH 7.5–9.0 adjusted by Na2CO3) compared with sodium humate. The depression mechanism of ZnSO4 on arsenopyrite flotation was studied by electrokinetic potential, adsorbed amount measurements, scanning electron microscope (SEM) observation and energy dispersive spectra (EDS) detection. The electrokinetic potential measurement results show a potential increase forpleas the arsenopyrite treated with ZnSO4 in the pH range 7.5–9.0, which could be attributed to the formation of the precipitated zinc carbonate (ZnCO3(S)). For arsenopyrite treated with both ZnSO4 and SIBX, the electric surface potentials also display an increase, to approximate the values with solely ZnSO4 treated, at pH 7.5–9.0, indicating the inhibition of ZnCO3(S) upon the SIBX adsorption onto arsenopyrite. Adsorption results demonstrated that SIBX adsorption onto arsenopyrite indeed was inhibited at the pH 7.5-9.0 through the sharp decrease in SIBX adsorbed amount with ZnSO4 as the depressant at this pH range. SEM observation and EDS detection results verify the formation of colloidal ZnCO3 on the arsenopyrite, with ZnSO4 as the depressant in combination with Na2CO3.

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Selective chalcopyrite flotation from pyrite with glycerine-xanthate as depressant

Cited by 42 publications

References 19 publications

Flotation and Adsorption of a New Polysaccharide Depressant on Pyrite and Talc in the Presence of a Pre-Adsorbed Xanthate Collector

Flotation and Adsorption of a New Polysaccharide Depressant on Pyrite and Talc in the Presence of a Pre-Adsorbed Xanthate Collector

Selective flotation separation of chalcopyrite and sphalerite by thermal pretreatment under air atmosphere

Colloidal ZnCO3 as a Powerful Depressant of Arsenopyrite in Weakly Alkaline Pulp and the Interaction Mechanism

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