Stibnite froth flotation: A critical review

Segura-Salazar, Juliana; Brito-Parada, Pablo R.

doi:10.1016/j.mineng.2020.106713

Cited by 31 publications

(8 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Since the kinetics of hole transfer to electrolyte under OER condition is sluggish, the photon-induced holes are accumulated at the electrode/electrolyte interface. This hole accumulation induces severe oxidation reaction of Sb 2 S 3 at the high anodic potential according to Pourbaix diagram, 50 resulting in partially oxidized surface states. These surface states likely play as a recombination center interfering the OER, thus the transient current spike behaviour is observed.…”

Section: Energy and Environmental Science Papermentioning

confidence: 99%

High-performance Sb₂S₃ photoanode enabling iodide oxidation reaction for unbiased photoelectrochemical solar fuel production

Park

Tan

et al. 2022

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

Section: Energy and Environmental Science Papermentioning

confidence: 99%

High-performance Sb₂S₃ photoanode enabling iodide oxidation reaction for unbiased photoelectrochemical solar fuel production

Park

Tan

et al. 2022

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…Stibnite is the primary natural source of antimony, which can be effectively floated by xanthates in an acidic medium at pH < 5 [1,2]. Stibnite does not respond well to xanthates owing to the presence of alkaline gangues in most deposits.…”

Section: Introductionmentioning

confidence: 99%

“…Further, it is uneconomical to float stibnite in an acidic slurry at pH > 5 [3]. During production, xanthate flotation is typically used to separate stibnite from other gangues after activation at pH 6.5 [1,4].…”

Section: Introductionmentioning

confidence: 99%

Activation mechanisms of Cu 2+ and Pb 2+ in stibnite flotation

Xiao

Cui

Tong

et al. 2023

Preprint

View full text Add to dashboard Cite

Different activation mechanisms of Cu2+ and Pb2+ in stibnite flotation were studied via microflotation and adsorption capacity tests and density functional theory (DFT). Microflotation experiments indicated that the recovery rate of stibnite flotation with butyl xanthate (BX) was activated 7.82% higher by Pb2+ than Cu2+. The presence of Pb2+ increased the amount of adsorbed BX on the stibnite surface. The results of DFT also suggested stronger activation by Pb2+. Cu2+ activation induced the formation of Cu-S bonds between the double-bonded S1 atom of BX with Cu, resulting in electron gain. Pb2+ activation was followed by the formation of a stable chelating structure between single-bond S1 and double-bond S2 atoms of BX, resulting in electron loss. This system also facilitated dixanthate formation on the mineral surface via interaction between BX and oxygen, thus improving the floatability of stibnite. This study lays a theoretical foundation for the efficient recovery of stibnite.

show abstract

“…Согласно приведенным в обзоре [10] данным максимальная флотоактивность стибнита наблюдается в кислой среде (рН = 2÷4) с использованием дитиофосфатов, а в нейтральной (рН = 6,5÷7)ксантогенатов с числом углеводородных групп от 4 до 5. В щелочной среде (рН  10) флотация стибнита возможна с применением активаторов солей свинца, меди и цинка.…”

Section: Introductionunclassified

Floatability and calculated reactivity of sulfide minerals and gold

Игнаткина

Kayumov

Yergesheva

2022

Izv.VUZ. Tsvet. Met.

View full text Add to dashboard Cite

The paper provides the results of theoretical reactivity calculations for gold, molybdenum, stibnite, galena, chalcopyrite, arsenopyrite and pyrite in comparison with such experimental data as the floatability of monomineral fractions with butyl xanthate, wetting angle values, changes in the kinetics of the mineral electrode potential. The following calculation series in terms of reactivity and oxidizing ability were established by calculation: Au < Sb2S3 < MoS2 < PbS < CuFeS2 < FeAsS < FeS2. During the Hallimond tube flotation, natural gold grains demonstrated the highest recovery (70 %) in the рН = 5÷7 range compared to all the studied sulfides. Molybdenite and stibnite are floated at the level of 50 % under the same conditions. As pH increases towards the alkaline region, a decrease in the floatability of all sulfides except for chalcopyrite is observed. It was established that the highest recovery is achieved when the required time of conditioning with the collector is the inverse of their reactivity. The measured wetting angle of a drop of water on an untreated surface has the highest value (78°) for a gold plate, and the lowest one (67°) for pyrite, but the latter features the greatest increase in the wetting angle (by 15°) after treatment with butyl xanthate at a concentration of 10–4 mol/l and pH = 6. For molybdenite, treatment with butyl xanthate has practically no effect on the measured wetting angle. The Sb2S3 < PbS < CuFeS2 < FeAsS < FeS2 series is determined according to the electrode potential in the рН = 2.0÷5.6 range. Theoretical calculations and experimental data obtained when studying monofractions of sulfides and gold showed that experimental conditions (pH, conditioning time, collector concentration) significantly affect the floatability. The calculated reactivity of chemical sulfide compounds and gold in comparison with experimental results proved the importance of maintaining certain flotation conditions to create contrast in the floatability of minerals.

show abstract

Stibnite froth flotation: A critical review

Cited by 31 publications

References 80 publications

High-performance Sb₂S₃ photoanode enabling iodide oxidation reaction for unbiased photoelectrochemical solar fuel production

High-performance Sb₂S₃ photoanode enabling iodide oxidation reaction for unbiased photoelectrochemical solar fuel production

Activation mechanisms of Cu 2+ and Pb 2+ in stibnite flotation

Floatability and calculated reactivity of sulfide minerals and gold

Contact Info

Product

Resources

About

Stibnite froth flotation: A critical review

Cited by 31 publications

References 80 publications

High-performance Sb2S3 photoanode enabling iodide oxidation reaction for unbiased photoelectrochemical solar fuel production

High-performance Sb2S3 photoanode enabling iodide oxidation reaction for unbiased photoelectrochemical solar fuel production

Activation mechanisms of Cu 2+ and Pb 2+ in stibnite flotation

Floatability and calculated reactivity of sulfide minerals and gold

Contact Info

Product

Resources

About

High-performance Sb₂S₃ photoanode enabling iodide oxidation reaction for unbiased photoelectrochemical solar fuel production

High-performance Sb₂S₃ photoanode enabling iodide oxidation reaction for unbiased photoelectrochemical solar fuel production