RESEARCH OF PHYSICOCHEMICAL PROPERTIES OF FERROUS SANDS FROM ALUMINA PRODUCTION
Zhunusova А. Zhunusov А. Bykov P. Bakirov A. Zayakin O. Kenzhebekova A.
31 December 2024Technical University of Kosice
Acta Metallurgica Slovaca
2024#30Issue 4161 - 166 pp.
This research is devoted to sintering ferruginous sand – waste from alumina production. The research allowed us to determine the optimal process parameters for obtaining iron ore and fluxed agglomerate. When studying the effect of flux additives in the composition of the agglomeration batch, we considered them from the position of multicomponent oxide systems based on the phase diagrams of the FeO-CaO-Fe2O3-Al2O3, FeO-MgO-Fe2O3-Al2O3 and FeO-MgO-CaO-Fe2O3 systems. The thermal transformations in the ferruginous sands and the agglomerate obtained from them were studied. The obtained derivatograms indicate the complexity of the mineral composition of the iron ore materials under study. According to the X-ray phase analysis, wustite FeO and magnetite Fe3O4 are recorded during agglomeration. Also, X-ray phase analysis reveals the appearance of hercynite FeAl2O4. It provides recommendations for avoiding undesirable factors of the formation of low-melting phases from the position of the oxide system FeO-MgO-CaO-Fe2O3. The presented X-ray phase and petrographic studies confirm the studys results.
Agglomeration , ferrous sand , fluxes , iron ore agglomerate , sintering
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Toraighyrov University, Lomov st. 64, Pavlodar city, Kazakhstan
Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Amundsen st. 101, Yekaterinburg city, Russian Federation
Toraighyrov University
Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences
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