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ArticleName Magnetite losses decrease at the Abagurskaya concentrating plant
ArticleAuthor Ganzhenko I. M., Yakubaylik E. K.

Evraz’s Abagur Branch (Russia):

Ganzhenko I. M., Chief Specialist on Mineral Processing;

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.

keywords Magnetite; magnetic separator; neodymium-iron-boron; magnetic-field intensity; saturation magnetization, residual and in different fields; coercive force; specific magnetic susceptibility

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