Abstract
The work is devoted to developing a cost-efficient method for the processing of metallurgical wastes such as oiled mill scale formed upon the mechanical cleaning of a hot-rolled steel strip in scalebreakers. The most significant parameters of a chemical-metallurgical process for producing expensive and highly marketed products, such as α-Fe2O3 and γ-Fe2O3 nanopowders, are experimentally determined. The properties of initial materials and nanodispersed products have been studied by X-ray diffractometry, energy dispersive spectroscopy, scanning and transmission electron microscopy, and Mössbauer spectrometry. The temperature and field dependences for the powder magnetization have been plotted according to the measurements performed with the use of a vibration magnetometer. The mill scale under investigation consists of three main phases: wustite, magnetite and hematite at a weight ratio of 6 : 8 : 7, respectively. The initial scale was activated in a magnetic mill in a hydrogen flow and dissolved in a mixture of hydrochloric and nitric acids. The resulting solutions have been used to obtain α-Fe2O3 nanocrystalline hematite by a chemical-metallurgical method, the main stages of which consist in hydroxide precipitation with the use of alkali at constant pH, washing, drying, and dehydration. Maghemite γ-Fe2O3 has been obtained from hematite in two stages. At the first stage, hydrogen reduction has been performed, whereas at the second stage, the obtained magnetite has been oxidized in air. The particles of synthesized nanodispersed oxide powders are in the aggregated condition. The particles of α-Fe2O3 are spherical, whereas the particles of γ-Fe2O3 are rod-shaped. According to Mössbauer spectroscopy, the lattices of both oxides contain magnesium, aluminum, silicon, chromium, and manganese that originate from the initial scale. These elements determine magnetic properties of α-Fe2O3 and γ-Fe2O3 nanopowders. The set of properties inherent in nanodispersed hematite and maghemite powders obtained from metallurgical wastes (mill scale) is recommended for the application in catalytic processes, in the systems of industrial wastewater purification from heavy metal ions, as well as in the manufacturing of blood analysis markers.
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REFERENCES
Jiang, L., Wang, J., Wu, X., and Zhang, G., A stable Fe2O3/expanded perlite composite catalyst for degradation of rhodamine B in heterogeneous photo-fenton system, Water, Air, Soil Pollut., 2017, vol. 228, no. 12, p. 463.
Mondal, A.K., Rabeya, T., and Asad, M.A., Removal of methylene blue from wastewater using Fe2O3 as an adsorbent, Indian J. Adv. Chem. Sci., 2018, vol. 6, no. 4, pp. 200–204.
Mohapatra, M. and Anand, S., Synthesis and applications of nano-structured iron oxides/hydroxides—a review, Int. J. Eng., Sci. Technol., 2010, vol. 2, no. 8, pp. 127–146.
Kour, S., Sharma, R.K., Jasrotia, R., and Singh, V.P., A brief review on the synthesis of maghemite (γ-Fe2O3) for medical diagnostic and solar energy applications, AIP Conf. Proc., 2019, vol. 2142, no. 1.
Barmashov, A.E., Grishechkina, E.V., Dosovitskii, A.E., and Baryshnikova, M.A., Superparamagnetic particles and their application in oncology, Nanotechnol. Russ., 2016, vol. 11, nos. 11–12, pp. 716–726.
Sivula, K., Le Formal, F., and Grätzel, M., Solar water splitting: progress using hematite (α-Fe2O3) photoelectrodes, ChemSusChem, 2011, vol. 4, pp. 432–449.
Fedotov, M.A., Kovalenko, L.V., Folmanis, G.E., Samus, M.A., Krasitskaya, S.G., and Tananaev, I.G., Functional materials for radioactive waste management, Nanotechnol. Russ., 2018, vol. 13, nos. 11–12, pp. 578–584.
Fedotov, M.A., Gorbunova, O.A., Fedorova, O.V., Folmanis, G.E., and Kovalenko, L.V., Magnetic iron oxides in the cementation technology of the boron-containing radioactive waste, IOP Conf. Ser.: Mater. Sci. Eng., 2015, vol. 81, art. ID 012063.
Fedotov, M.A., Zinoveev, D.V., Grudinsky, P.I., Kovalenko, L.V., and Dyubanov, V.G., Utilization of red mud and boron-containing liquid radioactive wastes of nuclear power plants, IOP Conf. Ser.: Mater. Sci. Eng., 2019, vol. 525, art. ID 012095.
Baek, S.-H., Hong, S.-H., Cho, S.-S., Jang, D.-Yu, and Joo, W.-S., Optimization of process parameters for recycling of mill scale using Taguchi experimental design, J. Mech. Sci. Technol., 2010, vol. 24, no. 10, pp. 2127–2134.
Sanin, V.N., Ikornikov, D.M., Andreev, D.E., Sachkova, N.V., and Yukhvid, V.I., Mill scale recycling by SHS metallurgy for production of cast ferrosilicon and ferrosilicoaluminium, IOP Conf. Ser.: Mater. Sci. Eng., 2019, vol. 558, art. ID 012041.
Nanopowders, US research nanomaterials. http://www.us-nano.com/nanopowders. Accessed December 18, 2019.
Fouad, D.E., Zhang, C., El-Didamony, H., Yingnan, L., Mekuria, T.D., and Shah, A.H., Improved size, morphology and crystallinity of hematite (α-Fe2O3) nanoparticles synthesized via the precipitation route using ferric sulfate precursor, Results Phys., 2019, vol. 12, pp. 1253–1261.
Fouada, D.E., Zhanga, C., Mekuria, T.D., Bi, C., Zaidi, A.A., and Shah, A.H., Effects of sono-assisted modified precipitation on the crystallinity, size, morphology, and catalytic applications of hematite (α‑Fe2O3) nanoparticles: a comparative study, Ultrasonics Sonochem., 2019, vol. 59, art. ID 104713.
Godymchuk, A., Papina, L., Karepina, E., Kuznetsov, D., Lapin, I., and Svetlichnyi, V., Agglomeration of iron oxide nanoparticles: pH effect is stronger than amino acid acidity, J. Nanopart. Res., 2019, vol. 21, no. 10, art. ID 208.
Alymov, M.I., Rubtsov, N.M., Seplyarskii, B.S., Zelensky, V.A., and Ankudinov, A.B., Temporal characteristics of ignition and combustion of iron nanopowders in air, Mendeleev Commun., 2016, vol. 26, no. 5, pp. 452–454.
Alymov, M.I., Rubtsov, N.M., Seplyarskii, B.S., Zelensky, V.A., and Ankudinov, A.B., Synthesis and characterization of passivated iron nanoparticles, Mendeleev Commun., 2016, vol. 26, no. 6, pp. 549–551.
Konyukhov, Yu.V., Nguyen, V.M., and Ryzhonkov, D.I., Kinetics of reduction of α-Fe2O3 nanopowder with hydrogen under power mechanical treatment in an electromagnetic field, Inorg. Mater.: Appl. Res., 2019, vol. 10, no. 3, pp. 705–711.
Konyukhov, Yu.V., Ryzhonkov, D.I., Levina, V.V., and Dzidzuguri, E.L., Producing iron nanopowders from iron ore, Steel Transl., 2005, vol. 35, no. 3, pp. 17–21.
De Los Santos Valladares, L., Bustamante Domínguez, A., León Félix, L., Kargin, J.B., Mukhambetov, D.G., Kozlovskiy, A.L., Moreno N.O., Flores Santibañez, J.F., Castellanos Cabrera, R., and Barnes, C.H.W., Characterization and magnetic properties of hollow α-Fe2O3 microspheres obtained by sol gel and spray roasting methods, J. Sci.: Adv. Mater. Devices, 2019, vol. 4, no. 3, pp. 483–491.
Funding
The work was financially supported by scientific grant AP05134799, funded by the Committee of Science of the Ministry of Education and Science of the Republic of Kazakhstan according to agreement no. 132 of March 12, 2018.
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Translated by O. Polyakov
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Kargin, D.B., Konyukhov, Y.V., Biseken, A.B. et al. Structure, Morphology and Magnetic Properties of Hematite and Maghemite Nanopowders Produced from Rolling Mill Scale. Steel Transl. 50, 151–158 (2020). https://doi.org/10.3103/S0967091220030055
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DOI: https://doi.org/10.3103/S0967091220030055