Laboratory studies of the technical system "rotary mixer-conveyor" of horizontal directional action

V. Zaselskiy D. Popolov I. Zaselskiy M. Shepelenko
Received 28.11.2020, Revised 27.02.2021, Accepted 27.04.2021
Abstract

Purpose. Modern metallurgical production uses in the main technological schemes the preparation of charge materials for sinter-ing and firing. The main process of such schemes is mixing, for which a rotary mixer of continuous horizontal direction can be used. The purpose of laboratory research was to obtain a linear mathematical model of the mixing process in a rotary mixer of continuous action, as well as to determine its rational design parameters that affect the quality of mixing the material. Research methods. The research methodology in this scientific work includes an analytical study which was performed on the basis of the representation of the dynamics of motion of a material point and solids moving in a vibrating horizontal plane during their direct interaction. The method of planning a complete factorial experiment was also applied, the adequacy of the model was checked according to Student's criterion and mathematical methods of data processing were used. Scientific novelty. For the first time, for the laboratory sample of the technical system "rotary mixer-conveyor" linear de-pendences are obtained, which connect the kinematic, design parameters of the rotary mixer and the vibrational acceleration of the conveyor belt. A preliminary experiment was also conducted, in which rational design parameters were determined. The study found that for the experimental system conveyor-rotor mixer, with constant design and kinematic parameters of the conveyor belt, the quality of mixing is directly proportional to the height of the material layer. Practical significance. The article presents the scheme and principle of operation of the laboratory stand of the system of a rotary mixer of continuous horizontal directional action and a belt conveyor, also describes the course of preliminary and complete factorial experiments. The connection between the kinematic and structural elements of the working body of the mixer, the height of the layer of conveying material and the vibrational acceleration of the conveyor belt. Rational parameters of the system "rotary mixer-conveyor" are determined. Results. The main factors that directly affect the quality of mixing are identified; the course of the experiment is given

Keywords:
mixer; material; blade; experiment; working body; rotor; factor; mixer; technical system; conveyor

Retrieved from Vol. 19, No. 1, 2021

Pages 29–35

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Zaselskiy, V., Popolov, D., Zaselskiy, I., & Shepelenko, M. (2021). Laboratory studies of the technical system "rotary mixer-conveyor" of horizontal directional action. Journal of Kryvyi Rih National University, 19(1), 29-35. https://doi.org/10.31721/2306-5451-2021-1-52-29-35
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