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Title: MODELING OF FINE MINERAL PARTICLE AGGREGATION TO REDUCE ENVIRONMENTAL RISK IN MINING INDUSTRY
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MODELING OF FINE MINERAL PARTICLE AGGREGATION TO REDUCE ENVIRONMENTAL RISK IN MINING INDUSTRY
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1314-2704
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English
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21
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7.2
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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The increased content of suspended fine mineral particles in technological and waste waters of mining enterprises and the need to reduce their content to prescriptive concentrations before recycling or discharging into natural water bodies make it necessary to develop new approaches to water conditioning. Despite a variety of existing technological solutions, it’s a problem to select a water conditioning method that simultaneously provides low cost and environmental acceptability. The solution to this task is the use of main production wastes of enterprises. It is of practical and scientific interest to identify the conditions of aggregation of suspended solids with fine particles of waste rock minerals, subjected to mechanical surface activation during ore grinding in order to reduce the content of suspended solids in waste water without adding chemical reagents.
Dispersion interactions are determined by the material composition of minerals and are an important component of the forces responsible for the particles aggregation. However, theoretical calculation of dispersion interactions in polydisperse systems does not allow taking into account many significant factors, such as asymmetric particle shapes or structural properties of the water layer between the particles in the resulting aggregates, which makes it difficult to assess the aggregative stability. In order to improve the reliability of parameterization of dispersion interactions, the authors have studied aggregation in a polydisperse system of micron-sized particles using the case study of ore deposits developed by the Kola mining and industrial complex. The authors have proposed a methodical approach to evaluation of dispersion interactions constants in mineral-water and mineral-water-mineral systems based on the matching of a set of experimental data on the aggregation of fine particles obtained by laser diffraction under equilibrium conditions. On the basis of the obtained data the authors have determined possibility of water conditioning by aggregation of fine mineral particles at their dispersion interaction. |
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conference
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21st International Multidisciplinary Scientific GeoConference SGEM 2021
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21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
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Proceedings Paper
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STEF92 Technology
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SGEM International Multidisciplinary Scientific GeoConference
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
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315-322
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16 - 22 August, 2021
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website
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cdrom
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8141
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ore processing waste; fine mineral particles; aggregation; Hamaker constant; water conditioning
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