Kazakh national research technical university named after K. I. Satpaev (Almaty, Kazakhstan):

I. Yu. Motovilov, Doctoral student Ph.D. in metallurgy, Chair “Metallurgical furnaces, heat engineering and technology of special materials”, e-mail: motovilov88@inbox.ru
V. A. Luganov, Dr. Eng., Prof., Chair “Metallurgical furnaces, heat engineering and technology of special materials”
T. A. Chepushtanova, Cand. Eng., Associate Prof., Head of the Chair “Metallurgical furnaces, heat engineering and technology of special materials”

Worcester polytechnic university (Worcester, MA, USA):

B. Mishra, Dr. Eng., Prof., Director of the Institute for metal processing

This article presents the results of the high-temperature hydrolysis process of FeCl₂×4H₂O and the study of iron oxide powder properties produced. It is observed that the process has a topochemical character and proceeds in a diffusion zone. Conditions sufficient for practically complete decomposition of FeCl₂×4H₂O are a temperature in the range of 803–903 K and a duration of 40 minutes. The powder, obtained as a result of high-temperature hydrolysis of FeCl₂×4H₂O, is represented by an ultradisperse powder of iron oxides of 10–100 nm in size (average — 20 nm), having a basically round shape. The results of microprobe, X-ray phase analyzes, magnetic susceptibility analysis, and Mössbauer spectroscopy have revealed that the product of hightemperature hydrolysis consists of a mixture of iron oxides consisting of magnetite and hematite.

1. Zhiqing Tong, Pei Zheng, Bo Bai, Honglun Wang, Yourui Suo. Adsorption Performance of Methyl Violet via α-Fe₂O₃ Porous Hollow Carbonaceous Microspheres and Its Effective Regeneration through a Fenton-Like Reaction. Catalysts. 2016. No. 12. Vol. 6. pp. 58.
2. Zhang T., Guan L., Li C., Zhao J., Wang M., Peng L., Wang J., Lin Y. Cost-Effective and Facile Preparation of Fe₂O₃ Nanoparticles Decorated N-Doped Mesoporous Carbon Materials: Transforming Mulberry Leaf into a Highly Active Electrocatalyst for Oxygen Reduction Reactions. Catalysts. 2018. Vol. 8. No. 3. p. 101.
3. Kopkova E. K., Tyuremnov A. V., Gromov P. B., Neradovskiy Yu. N., Semushin V. V. Hydrochloric extraction processing of zinc clinker. Khimicheskaya tekhnologiya. 2015. No. 3 (16). pp. 168–175.
4. Semenova A. S. Synthesis of nanostructured iron oxide (III) via high-temperature hydrolysis. Collection of the theses of the VI scientific-technical conference of students, post-graduates and young scientists “Nedelya nauki 2016”. 2016. p. 311.
5. Xingzhong Guo, Qilong Zhang, Xingeng Ding, Qianhong Shen, Chunchun Wu, Lingjie Zhang, Hui Yang. Synthesis and application of several sol–gel-derived materials via sol–gel process combining with other technologies: a review. Journal of Sol-Gel Science and Technology. 2016. January 16. pp. 1–31. Available at: http://link.springer.com/article/10.1007/s10971-015-3935-6#page-1 (10.05.2016).
6. Alkan G., Chier C., Gronen L., Stopic S., Friedrich B. A mineralogical Assessment on Residues after Acidic Leaching of Bauxite Residue (Red Mud) for Titanium Recovery. Metals. 2017. No. 7 (11). p. 458; DOI: 10.3390/met7110458
7. Aksenov V. I., Tsarev N. S., Nichkova N. I. Processing of “acidic” Fe-containing waste waters during introduction of closed systems of water usage at the iron and steel enterprises. Chernaya metallurgiya. Byulleten nauchno-tekhnicheskoi informatsii. 2016. No. 10 (1402). pp. 71–75.
8. Motovilov I. Yu., Luganov V. A., Chepushtanova T. A. Thermodynamical analysis of iron powder fabrication via pyrometallurgy. Vestnki KazNTU. 2013. No. 5. pp. 220–225.
9. Motovilov I. Yu., Luganov V. A. High-temperature hydrolysis of iron (II) chloride. Gornyi zhurnal Kazakhstana. 2016. No. 1. pp. 41–46.
10. Batygin M. V., Dobrynkin N. M., Noskov A. S. Production of boehmite and hematite in combined hydrolysis of carbamide, aluminium chloride and iron (III) chloride in hydrothermal conditions. Zhurnal prikladnoy khimii. 2016. No. 11 (89). pp. 31–36
11. Luganov V. A., Motovilov I. U., Chepushtanova T. A., Guseynova G. D. Combined technology of oxidized nickel ore processing. Proceedings of IMPC 2016: XXVIII International Mineral Processing Congress Proceedings. 2016.
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