Semenenko Ye..V., Kirichko S.N., Demchenko T.D., Skosyrev V.G. Calculation of critical parameters of centrifugal pumps designed for highly-concentrated hydromixture

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Parent Category: Geo-Technical Mechanics, 2017

Category: Geo-Technical Mechanics, 2017, Issue 137

 

Geoteh. meh. 2017, 137, 135-144

CALCULATION OF CRITICAL PARAMETERS OF CENTRIFUGAL PUMPS DESIGNED FOR HIGHLY-CONCENTRATED HYDROMIXTURE

¹Semenenko Ye..V., ¹Kirichko S.N., ¹Demchenko T.D.

¹N.S. Polyakov IGTM NAS of Ukraine

¹Skosyrev V.G.

¹PSTU МЕS of Ukraine

UDC [621.671:621.65.035:622.012.2].001.24

Abstract. Purpose of the research is to study influence of initial shear stress of highlyconcentrated slurry on the parameters of discharge-head characteristics of centrifugal pumps in hydrotransport complexes of ore-dressing and processing enterprises depending on other rheological properties and concentration of the suspension, as well as characteristics of particles of the solid phase. It is for the first time when existence of critical rate of impeller rotation speed in the centrifugal pump is determined, below which the pump, while rotating, will be unable to pump highly-concentrated slurries, which refer to the Bingham-Shvedov fluids. Dependence is determined between this critical rotation frequency and impeller diameter, rheological properties and concentration of the slurry, as well as density of the particles of the slurry solid phase. It is shown that, at certain ratio between rheological characteristics of slurry and Archimedes parameter of solid fraction particles, dependence of this rotation frequency on the concentration of the slurry is an extreme factor. It is proved that within intervals of variation of centrifugal pump parameters in hydrotransport complexes, which are characteristic for domestic ore-dressing and processing enterprises, the extremum under consideration is a minimum.

Keywords: hydrotransport, centrifugal pump, slurry, high concentration.

 

REFERENSES

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About the authors

Semenenko Evgeniy Vlsdimirovich, Doctor of Technical Sciences (D. Sc.), Head of the Department of Mine Energy Complexes, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepr, Ukraine, evs_post@mеta.ua

Skosyrev Viktor Georgievich, Candidate of Technical Sciences (Ph.D.), Associate Professor in the Department of Electrification of Industrial Enterprises, Priazovsky State Technical University (PSTU) under the Ministry of Education and Science of Ukraine, Mariupol, Ukraine, e-mail. This email address is being protected from spambots. You need JavaScript enabled to view it.

Kirichko Sergey Nikolaevich, Candidate of Technical Sciences (Ph.D), Junior Researcher in the Department of Geodynamic systems and Vibration Technologies, M.S. Polyakov Institute of GeotechnicalMechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, evs_post@mеta.ua

Demchenko Tatiana Dmitrievna, Master of Science, Engineer in the Department of Mine Energy Complexes, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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