THE INVESTIGATION OF THE INFLUENCE OF MAGNETIC FIELD ON THE PROPERTIES OF FLUIDIZATION OF FERROMAGNETIC SUSPENSION IN THE PROCESS OF MAGNETIC-GRAVITY SEPARATION

The article investigates the influence of an external magnetic field of low intensity on the ferromagnetic properties of the slurry formed by particles of different size magnetite. During the experimental work determined the content of solids in suspension by measuring the height of the fluidized bed at fixed speeds of upflow and by changing the value of the magnetic field from 0 to 4.8 kA / m. There were presented the cross-plots of the volume density of the magnetite particles in the fluidized slurry from the speed upflow at a magnetic field. A qualitative description of the behavior of fluidized bed consisting of particles of magnetite of Olenegorsk deposit of grade -100+71 μm, -125+100 μm and -160+125 μm was suggested. These were established the critical speeds of fluidization of ferromagnetic material and identified the ranges of existence fluidized of slurry in a stable condition for investigated grades of magnetite. The received data was suggested use to optimize process variables of magnetically gravity separation.

Keywords

Ferromagnetic suspension, fluidized bed, a magnetic field, upflow, magnetite particles, the volume density, magnetic-gravity separation.

Issue number: 7
Year: 2016
ISBN:
UDK: 622.778.2 : 622.341.1 : 532.545
DOI:
Authors: Kalyuzhnaya R. V.

About authors: Kalyuzhnaya R.V., Graduate Student, e-mail: krv@goi.kolasc.net.ru, Mining Institute of Kola Scientific Centre of Russian Academy of Sciences, 184209, Apatity, Russia.

REFERENCES: 1. Skorokhodov V. F., Khokhulya M. S., Opalev A. S., Sytnik M. V., Biryukov V. V. Patent RU 2012151974/03, 04.12.2012.
2. Gel’perin N. I., Aynshteyn V. G., Kvasha V. B. Osnovy tekhniki psevdoozhizheniya (Fundamentals of fluidization technique), Moscow, Khimiya, 1967, 664 p.
3. Filippov M. V. Prikladnaya magnitogidrodinamika. T. 12 (Applied magnetohydrodynamics, vol. 12), Riga, 1961, pp. 215–236.
4. Ursu A. V., Nistor I. D., Gros F., Arus V. A., Isopencu G. O., Mares A. M. Hydrodynamic aspects of fluidized bed stabilized in magnetic field. U.P.B. Sci. Bull., Series B, vol. 72, no 3, 2010, рp. 85–98.
5. Jovanovic Goran N., Sornchamni Thana, Atwater James E., Akse James R., Wheeler Jr. Richard R. Magnetically assisted liquid-solid fluidization in normal and microgravity conditions: experiment and theory. Powder Technology, 2004, vol. 148, pp. 80–91.
6. Al-Qodah Z., Al-Busoul M., Khraewish A. Hydrothermal Behavior of G-S Magnetically Stabilized Beds Consisting of Magnetic and Non-Magnetic Admixtures. ICCE 2007 4th International Conference on Chemical Engineering, Berlin, Germany, 24–26 August 2007.
7. Harel O., Zimmels Y., Resnick W. Particle separation in a magnetically stabilized fluidized bed. Powder Technology,1991, vol. 64, pp. 159–164.
8. Siegell J. H. Liquid-Fluidized Magnetically Stabilized Beds. Powder Technology, 1987, vol. 52, pp. 139–148.
9. Deen N. G., Van Sint Annaland M., Van der Hoef M. A., Kuipers J. A. M. Review of discrete particle modeling of fluidized beds. Chemical Engineering Science, 2007, vol. 62, no 1–2, рр. 28–44.
10. Shubin I. N., Sviridov M. M., Tarov V. P. Tekhnologicheskie mashiny i oborudovanie. Sypuchie materialy i ikh svoystva: Uchebnoe posobie (Technological machinery and equipment. Bulk materials and their properties. Educational aid), Tambov, Izd-vo ТGTU, 2005, 76 p.
11. Usachev P. A., Opalev A. S. Magnitno-gravitatsionnoe obogashchenie rud (Magnetic-gravity processing of ores), Apatity, KNTs RAN, 1993, 92 p.
12. Zelenova I. M. Gornyy informatsionno-analiticheskiy byulleten’. 2009, no 14, pp. 386–396.
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