Khrunina N.P. Modeling of Hydrodynamic Effects in Microdisintegration of High-Clay Mineral Components in Slurries

DOI: 10.18503/1995-2732-2022-20-3-26-34

Abstract

Now, the growth of Russia’s resource potential depends on the development of deep-seated deposits, mostly represented by clay gold-bearing placers with a higher content of thin and fine fractions of valuable components. This circumstance depends on development of improved methods and facilities, breaking structural bonds of clay minerals. A particular importance is given to theoretical studies and numerical methods applied to design a new type of facilities, excluding the use of additional power consumption, when breaking structural bonds of mineral components in slurries and operating by modeling hydrodynamic effects and cavitation. The analytical calculations provided data on changes in mass hydrodynamic power and thermodynamic potential of the system, when destructing mineral components of slurries in the unit suggested by the author and modeling hydrodynamic effects subject to the volume flow of slurries. The calculations showed that a decisive role in microdisintegration of mineral particle at the first stage of turbulization was played by changes in thermodynamic potential of the system, depending on changes in mass hydrodynamic power of the system and exposure time. When consumption and flow rate increase by 5 times, pressure, mass hydrodynamic power and thermodynamic potential of the system increase by 25 times on average. When a nozzle exit diameter decreases, according to the calculated data, mass hydrodynamic power and thermodynamic potential of the system increase by 2.8 times on average. Development of numerical methods and design of a new type of gravitation facilities contribute to adapting them to the use at mining sites. When activating microdisintegration, it is expected that utility consumption will decrease and environmental safety will improve due to hydrodynamic effect of transforming environment directly, including in beneficiation processes, ensuring lower consumption of surfactants and chemical agents.

Keywords

high clay sands, microdisintegration, thermodynamic potential, mass hydrodynamic power, hydrodynamic generator

For citation

Khrunina N.P. Modeling of Hydrodynamic Effects in Microdisintegration of High-Clay Mineral Components in Slurries. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2022, vol. 20, no. 3, pp. 26-34. https://doi.org/10.18503/1995-2732-2022-20-3-26-34

Khrunina N.P. Khabarovsk Federal Research Center, Institute of Mining, Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk, Russia

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