Experimental Justification of Luminophore Composition for Indication of Diamonds in X-Ray Luminescence Separation of Kimberlite Ore

Chanturia, V. A.; Dvoichenkova, G. P.; Морозов, В. В.; Koval’chuk, O. E.; Podkamenny, Yu. A.; Yakovlev, V. N.

doi:10.1134/s1062739118033858

Cited by 6 publications

(14 citation statements)

References 2 publications

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“…The experimental procedure included the steps of preparation of luminophore-containing water-organic emulsion, the mineral mix emulsion treatment, the emulsion removal and sample washing, the visiometric analysis of luminophore fixing efficiency on diamonds, the measurement of spectral-kinetic characteristics of minerals during their activation by X-ray radiation and Xray luminescence separation [3,5].…”

Section: Experimental Methods and Materialsmentioning

confidence: 99%

“…The most pronounced slow component is characteristic of luminophore FL-530 (Figure 2), and this fact does not allow using this luminophore without the addition of luminophores with a more pronounced fast component [3,5]. The analysis of spectral-kinetic characteristics of luminophores at the "Polus-M" separator (Figure 2, Table 2) allowed carrying out a preliminary selection and choosing the most satisfactory luminophores EL-570, FK-110, P-530, FS-4, FK-1, FK-2, and E-515-115, which can be used without the addition of other luminophores.…”

Section: Selection Of Luminophores For Modifying Reagentsmentioning

confidence: 99%

“…Increasing the extraction of weakly and anomalously luminescent diamonds is an important task, the solution of which will provide a significant increase in the performance of diamond mining enterprises [1,2]. A promising area for solving this problem is the use of stateof-the art techniques for modifying spectral characteristics of diamonds, including the use of luminophore-containing compositions [3]. The technique of treatment of diamond-containing material is based on the use of specially selected compositions of luminophores and an organic liquid, which is selectively fixed on the surface of diamonds, and bring the spectral and kinetic characteristics of non-extractable crystals closer to those required for their extraction at the standard settings of X-ray luminescence separators [4].…”

Section: Introductionmentioning

confidence: 99%

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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: Experimental Methods and Materialsmentioning

confidence: 99%

Section: Selection Of Luminophores For Modifying Reagentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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 following inorganic photoluminophores were used-Green: ZnS:Cu, Blue: ZnS:Ag, and Orange: ZnS:CdS:Cu ("RPF "Luminofor" Corp.", Stavropol, Russian Federation) [38].…”

Section: Inorganic Luminophoresmentioning

confidence: 99%

“…For example, the ZnS:Cu emits in the blue, green, and red regions of the spectrum, depending on the concentration of copper and the conditions for preparation. The emission spectra can depend on the intensity and wavelength of the exciting light as well as on temperature [38].…”

Section: Optical Scheme Of Protein Detection In Biosensor Channelsmentioning

confidence: 99%

Toward Development of a Label-Free Detection Technique for Microfluidic Fluorometric Peptide-Based Biosensor Systems

et al. 2021

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The problems of chronic or noncommunicable diseases (NCD) that now kill around 40 million people each year require multiparametric combinatorial diagnostics for the selection of effective treatment tactics. This could be implemented using the biosensor principle based on peptide aptamers for spatial recognition of corresponding protein markers of diseases in biological fluids. In this paper, a low-cost label-free principle of biomarker detection using a biosensor system based on fluorometric registration of the target proteins bound to peptide aptamers was investigated. The main detection principle considered includes the re-emission of the natural fluorescence of selectively bound protein markers into a longer-wavelength radiation easily detectable by common charge-coupled devices (CCD) using a specific luminophore. Implementation of this type of detection system demands the reduction of all types of stray light and background fluorescence of construction materials and aptamers. The latter was achieved by careful selection of materials and design of peptide aptamers with substituted aromatic amino acid residues and considering troponin T, troponin I, and bovine serum albumin as an example. The peptide aptamers for troponin T were designed in silico using the «Protein 3D» (SPB ETU, St. Petersburg, Russia) software. The luminophore was selected from the line of ZnS-based solid-state compounds. The test microfluidic system was arranged as a flow through a massive of four working chambers for immobilization of peptide aptamers, coupled with the optical detection system, based on thick film technology. The planar optical setup of the biosensor registration system was arranged as an excitation-emission cascade including 280 nm ultraviolet (UV) light-emitting diode (LED), polypropylene (PP) UV transparent film, proteins layer, glass filter, luminophore layer, and CCD sensor. A laboratory sample has been created.

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Justifying the actuator type selection for the flow-line conveyor system with vibration-assisted transportation of bulk material

Kharitonov

Vasilyev

Bebikhov

et al. 2022

Transportation Research Procedia

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Experimental Justification of Luminophore Composition for Indication of Diamonds in X-Ray Luminescence Separation of Kimberlite Ore

Cited by 6 publications

References 2 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

Toward Development of a Label-Free Detection Technique for Microfluidic Fluorometric Peptide-Based Biosensor Systems

Justifying the actuator type selection for the flow-line conveyor system with vibration-assisted transportation of bulk material

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