Research to Develop a Promising Technology for the Joint Disposal of Man-made Wastes
The main components of RM are: Fe (35.7 %) in the form of hematite and complex hydroalumination, Ca (11.0 %) in the form of calcite and hydro-aluminosilicates, Al (6.8 %) and Si (4.7 %) in the composition of hydroalumination, Na (2.8 %) in the form of hydroalumination, carbonate and hydroxide, Ti (2.5 %) in the form of rutile. The main components of the OMS are: Fe (71 %) in the form of magnetite, wustite and hematite with a very small amount of fayalite. The contents of Si (in the form of quartz), Al and P (non-forming phases) are within 1–3 %. Granulometric composition of RM is characterized by high dispersion. With an average diameter of 1.6 μm, all particle sizes are in the range of 0.5–12 μm. Granulometric composition of OMS is characterized by complexity. With an average diameter of 8.6 μm, maxima of 0.9 μm and 15 μm and a minimum of about 1.2 μm are observed in the particle size distribution. The specific surface area of the materials is equal to RM 23.7 m2/g, and OMS – 1.9 m2/g. The change of waste properties after exposure to aqueous solutions of alkalis and acids neutralizing the effect of organic (OMS) and alkaline (RM) surface compounds was studied. Neutralization of aqueous suspension with HCl solution leads to removal of alkaline film from the surface. As a result of the impact of reagents, there is a decrease in the content of water-soluble components in the processing products. At the same time, the average particle sizes of RM and OMS increase to 2 and 14 μm, respectively, and the specific surface area to 25.7 and 2.3 m2/g. The distribution of particle size of RM is almost constant, and the OMS is approximately 5 and 10 % of the smoothed maximum and minimum in the area of at least 0.5 and 15 μm.
Keywords: red mud, oiled mill scale, chemical, phase, granulometric, composition, specific surface
 Korneev, V. I., Sousse, A. G. and Guild, A. I. (1991). Red Mud, Properties, Warehousing, Application. Moscow: Metallurgy.
 Sabirzyanov, N. A. and Yatsenko, S. P. (2006). Hydrochemical Methods of Complex Processing of Bauxite. Ekaterinburg: Uro RAS.
 Ivanov, A. I., et al. (2003). Complex Processing of Bauxite. Yekaterinburg: Uro RAS.
 Leontiev, L. I. (2005). Complex Processing Raw Materials. Resources. Technologics. Economy, issue 7, pp. 10–14.
 Leontiev, L. I., et al. (1997). Pyrometallurgical Processing of Complex Ores. Moscow: Metallurgy.
 Tanutrov, I. N., et al. (2013). A New Technology for Copro-cessing Man-Made Wastes. Metallurgy of Nonferrous Metals, vol. 54, issue 2, pp. 136–142.
 Tanutrov, I. N. and Sviridova, M. N. (2015). The Directions of Improvement of Methods of Processing of Technogenic Wastes of the Ural Region. Ecology and industry of Russia, vol. 19, issue 8, pp. 31–35.
 Nechvoglod, O. V. and Upolovnikova, A. G. (2019). The Study of Phase Composition of the Products of Electrochemical Oxidation of Sulfide Pellet Systems Cu1.96S–Ni3S2–Cu–Ni. Butlerov Communications, vol. 57, issue 3, pp. 149–154.
 Golovin, S. N., et al. (2018). Influence of the Nature of the Precipitating Agent and Chemical-Thermal Treatment on the Phase Composition of Cerium-Containing Layered Double Hydroxides. Butlerov Communications, vol. 56, issue 12, pp. 126–130.
 Popova, A. N., Barnakov, C. N. and Khokhlova, G. P. (2018). Investigation of Structural Characteristics of Carbon Materials by Powder X-Ray Diffraction. Butlerov Communications, vol. 56, issue 11, pp. 153–159.
 Gabdullin, A. N., et al. (2018). Chemical and Phase Composition of Oxidized Nickel Ores of Kulikov Deposit – Raw Materials for Production of Magnesium Compounds, Fe-Ni-Containing Concentrates, SiO2 . Butlerov Communications, vol. 55, issue 8, pp. 156–161.
 Bunting, A. E., Sirotkin, R. O. and Sirotkin, O. S. (2018). The Peculiarities of the Chemical Structure, Properties, and Technology of Inorganic Products on the Basis of Oxides. Butlerov Communications, vol. 53, issue 2, pp. 153–160.