DOI: 10.18503/1995-2732-2026-24-1-5-14
Abstract
Problem Statement (Relevance). The need to reduce the cost and improve the technical and economic performance of the enrichment of iron-containing ores sets the task of improving the enrichment technology and, in particular, the ore preparation scheme, as the cost of ore preparation reaches 40% of the total cost. Therefore, many mining and processing plants use dry magnetic separation to separate the tailings. The particle size of the ore entering dry separation is 60(50) – 15(10) mm. Ore with a particle size of 15(10)-0 mm is not enriched by dry magnetic separation due to the low efficiency of separation on the drum separators used, and is sent for grinding and wet magnetic separation, which leads to increased costs for grinding, enrichment, and hydrotransport. Therefore, the use of suspended separators to improve the efficiency of separation of iron-containing raw materials is a highly relevant task. Objectives. The research is aimed at establishing the optimal parameters for dry magnetic separation in a suspended state of finely crushed iron-containing ores, taking into account their composition and properties. Methods Applied. The studies have been conducted on samples of magnetite ore from the Naslednitsky deposit, titanium magnetite ore from the Medvedevsky, Kopansky, and Chernorechensky deposits, and siderite ore from the Bakalsky deposit using a unit for dry magnetic separation in a suspended state. Originality. Dry magnetic separation in a suspended state is characterized by high selectivity due to the original design of the separator, which has a decreasing magnetic field strength as the material moves and an increased active separation zone. This ensures high quality and quantity indicators in the case of enriching finely crushed ores with a particle size of less than 10 mm and various compositions. Result. Dry magnetic separation can be effectively used for the enrichment of iron ores of various compositions. Practical Relevance. It is possible to use dry magnetic separation in a suspended state for the enrichment of finely crushed iron ores. This separation method will improve the technical and economic performance of the enrichment process and significantly reduce the costs of grinding.
Keywords
magnetic separation, magnetite ore, titanium magnetite ore, siderite ore, ore preparation, shot, separation in a suspended state, enrichment efficiency
For citation
Sedinkina N.A., Shavakuleva O.P., Gorlova O.E., Panfilova O.R., Shvydkiy O.A. Assessment of the Possibility of Dry Magnetic Separation in a Suspended State During the Enrichment of Iron-Containing Ores. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2026, vol. 24, no. 1, pp. 5-14. https://doi.org/10.18503/1995-2732-2026-24-1-5-14
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