EXPERIMENTAL AND THEORETICAL INVESTIGATION OF THE BEHAVIOR OF PARTICLES IN WATER FLOW

The experimental data on the behavior of flattened mineral particles in water flow along inclined and curved surface are described. The tests with sliding of particles on the bottom of an inclined tube show that particles having achieved a certain immersion rate turn and move further with their longer axis oriented in perpendicular to the tube wall. In upward water flow on a curved surface, it is found that there exists a certain angle of the surface incline such that flattened particles are instantaneously taken from the flow surface depthward and off the tube. The phenomenon of the flattened particle turn in gravity water flow on an inclined surface and, then, entrainment in upward water flow was studied experimentally in laboratory bench testing of fine plates of copper, aluminum, steel and gold. All in all, more than 2000 tests have been carried out to determine the turn angle and further departure. Developed based on the obtained results, the mathematical model describes the behavior of a thin rectangular plate in the vertical water flow inside the curved tube.

Keywords

Мineral particle, incline angle, curved surface, tube, mathematical model.

Issue number: 11
Year: 2018
ISBN:
UDK: 622.7
DOI: 10.25018/0236-1493-2018-11-0-171-177
Authors: Matveev I. A., Matveev A. I., Eremeeva N. G., Grigorev Yu. M.

About authors: Matveev I.A. (1), Junior Researcher, e-mail: igor.andr.matveev@gmail.com, Matveev A.I. (1), Doctor of Technical Sciences, Head of Laboratory, e-mail: andrei.mati@yandex.ru, Eremeeva N.G. (1), Researcher, e-mail: danng1@mail.ru, Grigorev Yu.M., Doctor of Physical and Mathematical Sciences, Assistant Professor, Head of Chair, e-mail: grigyum@yandex.ru, Physical and Technical Institute, North-Eastern Federal University named after M.K. Ammosov, 677000, Yakutsk, Republic of Sakha (Yakutia), Russia, 1) Chersky Mining Institute of the North, Siberian Branch, Russian Academy of Sciences, 677018, Yakutsk, Republic of Sakha (Yakutia), Russia.

REFERENCES:

1. Kizeval'ter B. V., Gershenkop A. SH., Khokhulya M. C. Opredelenie skorosti padeniya mineral'nykh chastits plastinchatoy formy v zhidkoy srede [Determination of fall velocity of flattened mineral particles in liquid environment], Obogashchenie rud. 1982, no 3, pp. 11—14. [In Russ].

2. Vasil'ev A. M. Analiz formul skorosti svobodnogo padeniya chastits sharoobraznoy formy [Analysis of formulas for free fall velocity of ball-shape particles], Obogashchenie rud. 2011, no 2, pp. 22—26. [In Russ].

3. Karmazin V. V., Radzhabov M. M., Izmalkov V. A. Issledovanie protsessa rasslaivaniya mineral'nykh chastits razlichnoy plotnosti v gravitatsionno-segregatsionnom kontsentratore [Study of lamination of different density mineral particles in gravity segregation concentrator], Gornyy informatsionno-analiticheskiy byulleten’. 2013, no 7, pp. 73—78. [In Russ].

4. Blott S., Pye K. Particle shape: a review and new methods of characterization and classification. Sedimentology. 2008. Vol. 55. pp. 31—63.

5. Rodriguez J. M., Edeskär T., Knutsson S. Particle Shape Quantities and Measurement Techniques — A Review. Electronic journal geotechnical engineering. 2013. Vol. 18. pp. 169—198.

6. Filippov V. E., Lebedev I. F., Eremeeva N. G., Gavril'ev D. M. Eksperimental'nye issledovaniya kharaktera povedeniya mineral'nykh chastits v gidroakusticheskoy srede [Experimental research of behavior of mineral particles in hydro-acoustic medium], Novosibirsk, izd-vo «GEO», 2013. 86 p.

7. Grigor'ev YU. M., Sivtsev V. I., YAkovlev B. V., Savitskiy V. B. K voprosu otsenki riskov zamerzaniya droblenoy rudy pri avariynykh ostanovkakh oborudovaniya [Assessment of risk of crushed ore freezing during emergency shutdown of equipment], Gornyy zhurnal. 2012, no 12, pp. 20—21. [In Russ].

8. Grigor'ev Yu. M., Sivtsev V. I., Yakovlev B. V. Termodinamicheskie raschety rastepleniya rudy razlichnoy krupnosti [Thermodynamic calculation of thawing of different size ore particles], Fizika i fizicheskoe obrazovanie. Materialy IV Respublikanskoy nauchno-prakticheskoy konferentsii, posvyashchennoy 100-letiyu dotsenta M.A. Alekseeva, Yakutsk, 18—19 October 2012, Yakutsk, Izd. dom SVFU, 2012, pp. 237—245. [In Russ].

9. Grigor'ev Yu. M., Sivtsev V. I., Yakovlev B. V. Raschet dinamiki izmeneniya temperatury rudy s polozhitel'noy temperaturoy pri droblenii v srede s otritsatel'noy temperaturoy [Calculation of march of temperature in positive temperature ore under crushing in negative temperature medium], Fizika i fizicheskoe obrazovanie. Materialy IV Respublikanskoy nauchno-prakticheskoy konferentsii, posvyashchennoy 100-letiyu dotsenta M.A. Alekseeva, Yakutsk, 18—19 October 2012, Yakutsk, Izd. dom SVFU, pp. 245—251. [In Russ].

10. Korpachev V. P. Teoreticheskie osnovy vodnogo transporta lesa [Theoretical framework of wood water transport], Moscow, Akademiya Estestvoznaniya, 2009. 237 p.

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