Selective Attachment of Luminophore-Bearing Emulsion at Diamonds—Mechanism Analysis and Mode Selection
| Autor: | V. V. Morozov, G. P. Dvoichenkova, O. E. Koval’chuk, V. N. Yakovlev, Yu. A. Podkamennyi, V. A. Chanturia |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mineral 0211 other engineering and technologies Diamond Geology 02 engineering and technology engineering.material Geotechnical Engineering and Engineering Geology Phosphate Sodium hexametaphosphate chemistry.chemical_compound chemistry Chemical engineering Phase (matter) Emulsion engineering Luminophore Kimberlite 021102 mining & metallurgy 021101 geological & geomatics engineering |
| Zdroj: | Journal of Mining Science. 56:96-103 |
| ISSN: | 1573-8736 1062-7391 |
| DOI: | 10.1134/s1062739120016527 |
| Popis: | The authors present an efficient modification method of X-ray fluorescence separation with mineral and organic luminophores used to adjust spectral and kinetic characteristics of anomalously luminescent diamonds. The mechanism of attachment of luminophores at diamonds and hydrophobic minerals is proved, including interaction between the organic component of emulsions and the hydrophobic surface of a treated object and the concentration of insoluble luminophore grains at the organic and water interface. Selective attachment of the luminophore-bearing organic phase of emulsion at the diamond surface is achieved owing to phosphatic dispersing agents. Tri-sodium phosphate and sodium hexametaphosphate added to emulsion reduce attachment of the luminophore-bearing organic phase at the surface of kimberlite minerals. It is shown that phosphate concentration of 1.0–1.5 g/l modifies and stabilizes spectral and kinematic parameters of kimberlite mineral on the level of initial values. This mode maintains the spectral and kinematic characteristics of anomalously luminescent diamonds at the wanted level to ensure extraction of diamonds to concentrate. |
| Databáze: | OpenAIRE |
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