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.


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

Issue number: 11
Year: 2018
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.


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