Authors:
Vladimir S. Morkun
1
;
Natalia Morkun
1
;
Vitalii Tron
2
;
Oleksandra Serdiuk
2
;
Iryna Haponenko
3
and
Alona Haponenko
3
Affiliations:
1
Faculty of Engineering Sciences, Bayreuth University, Universitätsstraße, 30, Bayreuth, 95447, Germany
;
2
Department of Automation, Computer Science and Technology, Kryvyi Rih National University, 11 Vitalii Matusevych Str., Kryvyi Rih, 50027, Ukraine
;
3
Research Department, Kryvyi Rih National University, 11 Vitalii Matusevych Str., Kryvyi Rih, 50027, Ukraine
Keyword(s):
Ultrasonic Cleaning, Ore Particles, Disintegration, Flocculation, Ore Processing.
Abstract:
The research is aimed at increasing efficiency of magnetite concentrate flotation by cleaning the surface of useful component particles through disintegrating ore flocculated formations. The generalized model of bubble motion dynamics with time-dependent pressure and bubble size is presented. Computer modelling of bubbles behaviour under the action of ultrasonic radiation is performed. The high-energy ultrasound power is calculated to maintain cavitation modes in the iron ore slurry. The research into flocculation and deflocculation considers the dependence of magnetic susceptibility on duration of magnetization. The modelling results enable the conclusion that in order to improve quality of cleaning ore particles before flotation, it is advisable to apply a spatial effect to the iron ore slurry by means of high-energy ultrasound of 20 kHz in the cavitation mode modulated by high-frequency pulses of 1 MHz to 5 MHz.