Evraz’s Abagur Branch (Russia):

Ganzhenko I. M., Chief Specialist on Mineral Processing; Nadezhda.Pashkova2@evraz.com

L. V. Kirensky Institute of Physics, Siberian Branch of RAS (Russia):

Yakubaylik E. K., Ph. D. in Physics and Mathematics; Senior Researcher

Presently, owing to the wet magnetic concentration technology and equipment improvement, losses of magnetite iron in tailings were reduced close to 1 % at all iron ore processing facilities. This raises the question of magnetite losses limit value that may be reached on the basis of the available engineering and technical provision. The results of the investigations, performed with a view to estimate achievable level of magnetite losses at the Abagurskaya concentrating plant, are presented. As a result of the composition and magnetic properties investigations, carried out on samples of concentrate and classifiers overflow products, as well as final tailings in all processing operations, it was established, that losses of magnetite iron in tailings could be reduced to 0.5 %. With that, decrease by 0.15 % may be achieved by means of replacement of all barium-ferrite systems with the ones made of neodymium-iron-boron alloy, and by 0.30 % — through application of separators of the type PBR-P-90/250A in magnetite heavy-medium regeneration, as well as application of neodymium-iron-boron alloy magnets.

1. GOST 16589—86. Rudy zheleznyye tipa zhelezistykh kvartsitov. Metod opredeleniya zheleza magnetitovogo (State standard 16589—86. Iron ore type of ferriginous quartzite. Method for iron magnetite determination).
2. Spravochnik po obogashcheniyu rud (Reference book on mineral processing). Vol. 3. Moscow, Nedra, 1974, pp. 164–232.
3. Spravochnik po obogashcheniyu rud. Osnovnyye protsessy (Reference book on mineral processing. Basic Processes). Moscow, Nedra, 1983, pp. 167–181.
4. Spravochnik po obogashcheniyu rud. Obogatitelnyye fabriki (Reference book on mineral processing. Concentrators). Moscow, Nedra, 1984, pp. 153–217.
5. UGMK–Rudgormash. Products catalog. Voronezh, 2012.
6. Balayev A. D., Boyarshinov Yu. V., Karpenko M. M., Khrustalev B. P. Automated magnetometer with a superconducting solenoid. Pribory i Tekhnika Eksperimenta = Instruments and Experimental Techniques, 1985, No. 3, pp. 167–168.
7. Derkach V. G. Spetsialnyye metody obogashcheniya poleznykh iskopayemykh (Special methods of mineral processing). Moscow, Nedra, 1966, pp. 25–27.