Mechanism Study of Xanthate Adsorption on Sphalerite/Marmatite Surfaces by ToF-SIMS Analysis and Flotation

Lai, Hao; Deng, Jiushuai; Fan, Guixia; Xu, Hongxiang; Chen, Wenxiang; Li, Shimei; Huang, Lingyun

doi:10.3390/min9040205

Cited by 23 publications

(4 citation statements)

References 30 publications

(38 reference statements)

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“…For better fixation of xanthate on the surface of sulfide, it is advisable to change its composition due to the course of an exchange reaction [16]: After the activation, the fixation of xanthate ions proceeded on the surface of the mineral much more intensively. In this case, the concentration of butyl xanthate for the hydrophobization of luminophores decreased significantly [15,16].…”

Section: Increasing the Intensity Of Luminophore Fixation On The Surf...mentioning

confidence: 84%

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Selection of reagent compositions for modifying spectral characteristics of weakly and anomalously luminescent diamonds in the process of X-ray luminescence separation

Chanturiya,

Morozov,

Dvoichenkova

et al. 2023

J Min & Metal A Mining

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The feasibility of targeted modification of the spectral properties of weakly and anomalously luminescent diamonds by modifying reagents containing luminophores based on sulfides and zinc orthosilicate, characterized by medium and low deviation of the luminescence signal from that of natural diamond. It was found that the hydrophobic treatment of inorganic luminophores with potassium butyl xanthate could increase the recovery of anomalous luminescent diamonds in the process of X-ray luminescence separation up to 80%. Organic collectors (optically transparent oil products with high extractability for luminophores and adhesion to diamonds) based on technical-grade diesel fuel and catalytically cracked heavy gas oil are recommended for the luminophorecontaining compositions. The feasibility of reducing the fixation of luminophores on the surface of kimberlite grains using sodium hexametaphosphate, sulfonol, carboxymethylcellulose and liquid glass was demonstrated. The application of these reagents in low-salinity water provides decreasing coating of kimberlite grains with luminophores while maintaining the required concentration of luminophores on the surface of diamonds. Semi-industrial tests with an LS-D-4-03N separator proved the possibility of complete recovery of weakly and anomalously luminescent diamonds after treatment of XRS tailings with the modifying reagents.

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Section: Increasing the Intensity Of Luminophore Fixation On The Surf...mentioning

confidence: 84%

“…The interaction of zinc sulfide with butyl xanthate at the concentrations up to 10 -4 mol/L was limited to the chemisorption reaction [5]. At the concentrations higher than 10 -4 mol/L, a zinc butyl xanthate phase could form according to the following reaction [15]:…”

Section: Increasing the Intensity Of Luminophore Fixation On The Surf...mentioning

confidence: 99%

Selection of reagent compositions for modifying spectral characteristics of weakly and anomalously luminescent diamonds in the process of X-ray luminescence separation

Chanturiya,

Morozov,

Dvoichenkova

et al. 2023

J Min & Metal A Mining

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“…In view of the fact that the grinding process is the initial stage of intense mineral mixing, in this study, the migration of surface chemical components of the mixed sample (galena and sphalerite) after mixed grinding was investigated using the ToF-SIMS. Because of the sampling depth of 1–3 nm and the ion imaging of sub-micron-resolution, ToF-SIMS is particularly suitable for analyzing the chemical component. − …”

Section: Introductionmentioning

confidence: 99%

Study on the Interaction between Galena and Sphalerite During Grinding Based on the Migration of Surface Components

et al. 2019

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In Pb–Zn ore flotation, unintentional activation of sphalerite often leads to difficult separation of Pb and Zn minerals, during which grinding plays a key role in unintentional activation. Therefore, the aim of this study was to evaluate the surface component changes of two different mineral particles and to propose the interaction between galena and sphalerite during mixed grinding using time-of-flight secondary ion mass spectrometry (ToF-SIMS). The results show that after mixed grinding of the galena and sphalerite, the Pb content on the sphalerite surface increased with the decrease of Zn and Fe contents on the sphalerite surface. The lead ions from galena were obviously absorbed onto the sphalerite surface, while the zinc and iron ions from sphalerite were not obviously migrated to the galena surface. Principal component analysis (PCA) of a dataset composed of 206 positive ion peaks of galena and sphalerite indicates that the surface components of galena and sphalerite migrated from either side to different degrees. This study successfully identified an important factor for unintentional activation of lead and zinc minerals during flotation: homogenization of surface components of different minerals during grinding.

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“…Sphal erite and zinc oxide are the main minerals containing zinc [3]. They are generally found in association with other sulphide minerals and useful components such as galena, pyrite, chal copyrite and other valuable minerals [4,5].…”

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confidence: 99%

Composition and processing of sulphide lead-zinc ores from Chaabet El-Hamra mine (Setif, Algeria)

Bourourou¹,

Bouzenzana²,

Batouche³

et al. 2021

Nauk. visn. nat. hirn. univ.

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Purpose. In order to fully exploit the metal and facilitate its method of processing, we need an accurate knowledge of its composition, granular distribution, and association with unimportant and penalizing elements that we would like to get rid of, compared to the distribution of the element to extract by flotation method. Methodology. The present experimental work proposes an approach to the mineralogical, chemical and particle size characterization, several analyzes have been carried out by Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM/EDS), X-ray Diffraction (XRD), Optical Microscopy (OM), Particle Size-Fraction Analysis (PSFA), and X-ray Fluorescence (XRF). These analyzes were submitted on samples of lead-zinc of different sizes as well as well-prepared fine powder of this ore; the zinc content of the raw material is about 5% Zn. Findings. The results obtained by the mineralogical characterization and the particle size analysis reveal a very varied and irregular texture of the ore, consisting mainly of sulphides (sphalerite, galena, pyrite, marcasite), associated with carbonate gangue, mainly dolomite and calcite. The theoretical dimensions of the particles found in the fine grain size classes [-1 +0.053] mm. In addition, the conditions of the pulp using the following reagents: CuSO4 activator, PAX collector, CaO regulator and the pine oil foamed, along with a pH modifier between 10.5 and 12 (11.8 optimal), improve the content of sulphide minerals, and increased the concentrate of sphalerite (ZnS) by foam Flotation with a maximum recovery and economically appropriate content (54% Zn concentrate). Originality. Depending on the results of the analysis performed and the complete collection of data obtained in the laboratory, we aim to optimize the process of treating lead-zinc sulphide ore and give a more detailed reference source to specialists, researchers and metallurgists in field of mining in general and in the treatment of polymetallic lead-zinc ore in the area studied in particular. Practical value. Benefit the values of beneficial minerals (concentrate of zinc and others sulphide), from different types of raw materials. The latter focuses on flotation as the main successful technique in the extraction of this type of lead-zinc minerals, but it requires constant research and careful examination of its elements and values in order to excel in this field of polymetallic-sulphide ore processing.

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Mechanism Study of Xanthate Adsorption on Sphalerite/Marmatite Surfaces by ToF-SIMS Analysis and Flotation

Cited by 23 publications

References 30 publications

Selection of reagent compositions for modifying spectral characteristics of weakly and anomalously luminescent diamonds in the process of X-ray luminescence separation

Selection of reagent compositions for modifying spectral characteristics of weakly and anomalously luminescent diamonds in the process of X-ray luminescence separation

Study on the Interaction between Galena and Sphalerite During Grinding Based on the Migration of Surface Components

Composition and processing of sulphide lead-zinc ores from Chaabet El-Hamra mine (Setif, Algeria)

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