Article name Development of a System for Monitoring the Parameters of ore Pulp in the Process of Ultrasonic Treatment
Authors Iodis V.A. candidate of engineering sciences, leading researcher,
Bibliographic description Iodis V. A. Development of a System for Monitoring the Parameters of ore Pulp in the Process of Ultrasonic Treatment // Transbaikal State University Journal. 2023. Vol. 29, no. 3. P. 45–55. DOI: 10.2109/2227- 9245-2023-29-3-45-55.
Category Subsoil Use, Mining Sciences
DOI 621.9.048.6+622.7
DOI 10.2109/2227-9245-2023-29-3-45-55
Article type Original article
Annotation The work is devoted to the development of a system for monitoring the parameters of the ore pulp in the process of ultrasonic treatment. The aim of the work is to analyze the changes in the physical, physic-chemical properties of ore pulps, their liquid phases in the process of ultrasonic treatment and to develop a system for monitoring their parameters for a laboratory ultrasonic reactor. A review of literary sources has shown that under the action of ultrasonic radiation in liquid media of ore pulps, a whole complex of physical, physico-chemical and chemical processes occurs that change their properties. An analysis of changes in the physical, physico-chemical properties of ore pulps, their liquid phases, during ultrasonic treatment has shown an increase in temperature, which reduces the intensity of cavitation by 20–30 times, an increase in the pH value by 4–5 % for water, by 7.9 % coal pulp and by 3.37–4.5 % for suspensions (frequency 20 kHz), an increase in the value of the redox potential in the first 6‒8 minutes by 24 %, an increase in the value of electrical conductivity during the first 5–6 minutes by 8–8.5 % and electrode potential by 13.6–16.6 %. However, the values of dynamic viscosity decreased, especially intensively (by a factor of 4) during the first 300 s of the treatment. With an increase in the radiation frequency to 1 MHz, the values of the hydrogen index fell. On the basis of these studies, a scheme of the pulp parameters control system has been developed. To control the parameters, devices were used ‒ a pH meter brand pH-150 MI, with a measurement error in determining the pH value of ± 0.05, in determining the values of the redox potential ± 3 mV, a conductometer RS 100 with an error of ± 2 full scale. An SV-10 vibroviscometer with a measurement accuracy of ±3 % (from 1 to 1000 mPa s) and an IRT-4/16 temperature meter with an indication resolution of 0.1°C, with a reduced measurement error of ±0.25 % were also used. The study of ultrasonic treatment of ore pulps is of great interest and requires further experimental studies.
Key words ultrasonic radiation, ore pulp, water, physical properties, physical and chemical properties, installation, laboratory reactor, parameter control system, parameter control system, bacterialchemical oxidation
Article information
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