Beneficiation of magnetite quartzite processing pro- ducts using new magnetic hydrocyclone

For the enhanced efficiency of magnetic separation of magnetic quartzite processing products, a new variant of a magnetic hydrocyclone is proposed. The goal of the research is the analysis of usability of the new machine in production of higher quality magnetite concentrate from rough iron ore concentrates in one separation stage, and in additional recovery of a magnetic product from processing tailings. The feature of the machine is the design of the magnetic system representing an electromagnet with a bowl-shaped magnetic circuit with the minimal magnetic leakage. The magnetic system concentrates the magnetic field in the zone of connection of the cylindrical and conical parts of the body. The magnetic fraction is let out with the treated water flow through the discharge. The article describes the test results obtained on the model of the magnetic hydrocyclone with the diameter of 30 mm and cone angle of 20 deg, and with the apex diameter of 5 mm. The maximal magnetic induction in the active zone of the magnetic hydrocyclone is 0.2 T. The product quality grows by more than 2%, with the iron recovery of 85–88% at its content of 65% in the initial product. Additional recovery of magnetite from tailings of an iron ore concentration factory is also tested. The multistage recleaning allowed products with the iron content up to 55%. The advantages of the magnetic hydrocyclone are the high specific productivity, simple structure and low energy consumption. The machine is recommended for the use in the processing circuits of ferruginous quartzite and other ore types which possess pronounced magnetic properties and small size of a valuable component, and for solving problems unsolvable using drum separators. 

Lavrinenko A. A., Sysa P. A. Beneficiation of magnetite quartzite processing products using new magnetic hydrocyclone. MIAB. Mining Inf. Anal. Bull. 2025;(12-2):125-136. [In Russ]. DOI: 10.25018/0236_1493_2025_122_0_125.

A.A. Lavrinenko¹, Dr. Sci. (Eng.), Chief Researcher, Head of Laboratory, e-mail: lavrin_a@mail.ru, ORCID ID: 0000-0002-7955-5273,
P.A. Sysa¹, Cand. Sci. (Eng.), Senior Researcher, e-mail: pavel_syssa@mail.ru, ORCID ID: 0009-0007-9883-8360,
¹ Institute of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences, 111020, Moscow, Russia.

A.A. Lavrinenko, e-mail: lavrin_a@mail.ru.

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