Determination of pulp parameters in the working chamber of the magnetic separator based on the assessment of the process of Lamb wave propagation

N. Morkun V. Tron O. Serdyuk A. Gaponenko S. Hryshchenko Ye. Bobrov
Received 26.01.2022, Revised 26.03.2022, Accepted 26.04.2022
Abstract

Purpose. Develop a method of ultrasonic control of pulp flow parameters directly in the working chamber of the magnetic separator. Research methods. Mathematical analysis and modeling of the Lemba wave propagation process emanating from the surface on which they propagate into the iron ore pulp stream. Scientific novelty. The proposed method differs from the known ones in that the resulting Lamb waves are used to measure the parameters of the pulp flow in the working chamber of the magnetic separator. This allows you to simultaneously measure the characteristics of the flow and the parameters of the solid phase particles in it. Practical significance. The method allows in the presence of one compact measuring channel (source, receiver) to obtain separate information on the general characteristics of the pulp and particles of its solid phase to adjust the operating parameters of the magnetic separator. Results. The proposed method of ultrasonic measurement of the characteristics of iron ore pulp in the working chamber of the magnetic separator differs from the existing ones in that it uses both Lamb waves propagating in the tank wall (working chamber of the separator) and formed on their basis outgoing waves in the flow. iron ore pulp). This allows in the presence of one compact measuring channel (source, receiver) to obtain separate information on the general characteristics of the pulp and particles of its solid phase. Based on the determined numerical characteristics of the measuring channel, the modeling of the method of ultrasonic measurements of the solid phase parameters of the pulp directly in the bath of the magnetic separator is performed. Modeling and experimental testing of the method of ultrasonic control of pulp parameters in a magnetic separator indicate the possibility of obtaining information about the real-time flow rate with an error of 1-1.2%, and the solid phase concentration and content of the control class of crushed ore size with error, which does not exceed 1.5%

Keywords:
magnetic separator; pulp; ultrasound; outgoing Lemba waves; flow parameters

Retrieved from Vol. 56, No. 1, 2022

Pages 172–177

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Morkun, N., Tron, V., Serdyuk, O., Gaponenko, A., Hryshchenko, S., & Bobrov, Ye. (2022). Determination of pulp parameters in the working chamber of the magnetic separator based on the assessment of the process of Lamb wave propagation. Mining Journal of Kryvyi Rih National University, 56(1), 172-177. https://doi.org/10.31721/2306-5435-2022-1-110-172-177
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