Research into resource-saving molybdenum-containing alloying additive, obtained by the metallization of oxide concentrate
DOI:
https://doi.org/10.15587/1729-4061.2017.104078Keywords:
molybdenum concentrate, carbon-thermal restoration, metallization, sublimation, phase analysis, microstructure, resource savingAbstract
We established that the phase composition of oxide molybdenum concentrate is re presented mainly by MoO3, as well as МоО2, WO3, Mo2C and associated ore impurities of Al2O3, CaO, SiO2 and MgO. We found non-uniform microstructure in the form of plates, granules of round shape, and thread-like formations. It was determined that phase composition of metallized molybdenum concentrate, obtained by carbon-thermal technique, is mostly composed of metal Mo with the presence of MoC and Mo2C. Unrestored component is represented by the oxy-carbide compound (Mo, O, C) and the lower molybdenum oxide MoO2. We noted fragmented presence of Mo8O23. Spongy microstructure revealed areas where the molybdenum oxide restoration products dominate. The presence of residual oxygen confirms the existence, along with metal Mo, of unrestored oxide or oxy-carbide compounds. The residual oxygen could also be contained in the oxide compounds of Si, Al, Ca, Mg, K, Na as associated ore impurities. This is confirmed by discovery of the specified elements in the examined areas. The detected phases and compounds do not display significant susceptibility to sublimation. High restorative ability, due to the excess of carbon in the form of carbides, provides the post-restoration of oxide component in the liquid metal in the process of alloying, as well as protection against secondary oxidationReferences
- Puttkammer, K., P. Fornkal' (2017). Kompleksnoe planirovanie proizvodstva – uchet ehnergo- i resursoehffektivnosti. Chernye metally, 2, 56–60.
- Yuzov, O. V., Sedyh, A. M. (2017). Tendencii razvitiya mirovogo rynka stali. Stal', 2, 60–67.
- Orlov, V. M., Kolosov, V. N. (2016). Magnesiothermic reduction of tungsten and molybdenum oxide compounds. Doklady Chemistry, 468 (1), 162–166. doi: 10.1134/s0012500816050062
- Tarasov, A. V. (2011). Mineral'noe syr'e, novye tekhnologii i razvitie proizvodstva tugoplavkih redkih metallov v Rossii i stranah SNG. Cvetnye metally, 6, 57–66.
- Leont’ev, L. I., Grigorovich, K. V., Kostina, M. V. (2016). The development of new metallurgical materials and technologies. Part 1. Steel in Translation, 46 (1), 6–15. doi: 10.3103/s096709121601006x
- Dang, J., Zhang, G.-H., Chou, K.-C., Reddy, R. G., He, Y., Sun, Y. (2013). Kinetics and mechanism of hydrogen reduction of MoO3 to MoO2. International Journal of Refractory Metals and Hard Materials, 41, 216–223. doi: 10.1016/j.ijrmhm.2013.04.002
- Wang, L., Zhang, G.-H., Chou, K.-C. (2016). Synthesis of nanocrystalline molybdenum powder by hydrogen reduction of industrial grade MoO3. International Journal of Refractory Metals and Hard Materials, 59, 100–104. doi: 10.1016/j.ijrmhm.2016.06.001
- Badenikov, A. V., Badenikov, V. Ya., Bal'chugov, A. V. (2015). Kinetika plazmennogo vosstanovleniya trekhokisi molibdena. Vestnik Angarskogo gosudarstvennogo tekhnicheskogo universiteta, 9, 8–10.
- Grigor’ev, S. M., Petrishchev, A. S. (2015). Refining metallized molybdenum concentrate by means of a low-temperature plasma-forming mixture. Steel in Translation, 45 (12), 954–958. doi: 10.3103/s0967091215120049
- Zhu, H., Li, Z., Yang, H., Luo, L. (2013). Carbothermic Reduction of MoO3 for Direct Alloying Process. Journal of Iron and Steel Research, International, 20 (10), 51–56. doi: 10.1016/s1006-706x(13)60176-4
- Torabi, O., Golabgir, M. H., Tajizadegan, H., Torabi, H. (2014). A study on mechanochemical behavior of MoO3–Mg–C to synthesize molybdenum carbide. International Journal of Refractory Metals and Hard Materials, 47, 18–24. doi: 10.1016/j.ijrmhm.2014.06.001
- Novoselova, L. Y. (2014). Mo and MoO3 powders: Structure and resistance to CO. Journal of Alloys and Compounds, 615, 784–791. doi: 10.1016/j.jallcom.2014.07.006
- Long, T. V., Palacios, J., Sanches, M., Miki, T., Sasaki, Y., Hino, M. (2012). Recovery of Molybdenum from Copper Slags. ISIJ International, 52 (7), 1211–1216. doi: 10.2355/isijinternational.52.1211
- Long, T. V., Miki, T., Sasaki, Y., Hino, M. (2012). Recovery of Molybdenum from Spent Lubricant. ISIJ International, 52 (7), 1217–1224. doi: 10.2355/isijinternational.52.1217
- Ryabchikov, I. V., Belov, B. F., Mizin, V. G. (2014). Reactions of metal oxides with carbon. Steel in Translation, 44 (5), 368–373. doi: 10.3103/s0967091214050118
- Grigor'ev, S. M., Kolobov, G. A., Karpunina, M. S., Grigor'ev, D. S. (2005). Osobennosti legirovaniya stali 38HNM molibdenom metallizovannogo koncentrata. Metallurgiya, 11, 24–30.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2017 Artem Petryshchev, Stanislav Hryhoriev, Ganna Shyshkanova, Olena Skuibida, Tetyana Zaytseva, Oleksandr Frydman, Olena Mizerna
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.
