Behavior of Phosphorus During Selective Reduction of Iron from Oolitic Ore and Separation of Reduction Products
Suleimen B. Yerzhanov A. Kosdauletov N. Adilov G. Nurumgaliyev A. Pushanova A. Kelamanov B. Gamov P. Smirnov K. Zhuniskaliyev T. Kuatbay Y. Abdirashit A.
September 2025Multidisciplinary Digital Publishing Institute (MDPI)
Materials
2025#18Issue 17
This study investigates the behavior of phosphorus during high-temperature smelting of hydrogen-reduced high-phosphorus oolitic iron ore from the Lisakovsk deposit. The preliminary reduction was carried out at temperatures ranging from 600 to 900 °C using hydrogen, aiming to selectively reduce iron to the metallic phase while retaining phosphorus in the oxide form. The resulting reduced products were subjected to wet magnetic separation and liquid-phase separation. It was found that neither method provides effective separation of phosphorus from iron: phosphorus partially enters the magnetic fraction and, during smelting, transfers into the metallic phase. To confirm the mechanism of phosphate reduction by metallic iron, a control experiment was conducted, in which a mixture of reduced iron and raw ore was smelted at 1650 °C. Microstructural and elemental analyses confirmed the redistribution of phosphorus into the metallic phase. These findings indicate that effective separation of iron and phosphorus cannot be achieved by reduction roasting alone and highlight the need for further studies on slag formation conditions and phase separation kinetics.
hydrogen reduction , magnetic separation , metal and slag , metallic iron , oolitic iron ore , phase separation , phosphorus , smelting
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Department of Metallurgy and Materials Science, Karaganda Industrial University, Temirtau, 101400, Kazakhstan
Department of Pyrometallurgical and Foundry Technologies, South Ural State University, Lenin Prospekt 76, Chelyabinsk, 454080, Russian Federation
Department of Metallurgy and Mining, K. Zhubanov Aktobe Regional University, Aktobe, 030000, Kazakhstan
Department of Science, Eurasian Technological University, Almaty, 050000, Kazakhstan
Department of Metallurgy and Materials Science
Department of Pyrometallurgical and Foundry Technologies
Department of Metallurgy and Mining
Department of Science
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