A STUDY OF PHYSICOCHEMICAL PROCESSES WHEN PELLETIZING SINTERING MIXTURE
DOI:
https://doi.org/10.15421/081923Keywords:
surfactants, adhesion, wetting, dustiness, fractional compositionAbstract
Data on the physico-chemical processes occurring during the pelletization of sintering mixture were obtained by bench and laboratory studies. Both the sintering parameters of the mixture and the intensity of dust and harmful gases entry into the atmospheric air together with sintering gases depend on the degree and quality of pelletization. The adsorption of surfactants was studied; the adhesion of surfactant solutions was calculated on the basis of contact angle measurements; an original method was applied for measuring the rupture force used for breaking the wetted sintering mixture, and data on the change in the fractional composition of the sintering mixture after the wetting were obtained. The optimal parameters of the pelletizing process were established. The optimal concentration of surfactant (TEAS) in the pelletizing solution was 0.00015 – 0.00020 mol/l at a flow rate of 70 – 80 g per ton of the sintering mixture; the best wetting and the smallest dust content (the percentage of sintering mixture fractions <3 mm) is provided by using seawater as a solvent. It is noted that not only a decrease, but also an increase in the TEAS concentration relative to the optimal value leads to a noticeable deterioration in the sintering mixture quality. Presumably, this behavior of the system under study is associated with both the size effects and the increased polarization of the sulfo group in the surfactant.
References
Fan, T., Zhou, G., & Wang, J. (2018). Preparation and characterization of a wetting-agglomeration-based hybrid coal dust suppressant. Process Saf. Environ. Prot., 113, 282–291. doi:10.1016/j.psep.2017.10.023
Pattanaik, A., & Venugopal, R. (2018). Investigation of Adsorption Mechanism of Reagents (Surfactants) System and its Applicability in Iron Ore Flotation – An Overview. Colloid Interface Sci. Commun., 25, 41–65. doi:10.1016/j.colcom.2018.06.003
Chen, P., Hu, Y., Gao, Z., Zhai, J., Fang, D., Yue, T., Sun, W. (2017). Discovery of a Novel Cationic Surfactant: Tributyltetradecyl-Phosphonium Chloride for Iron Ore Flotation: From Prediction to Experimental Verification. Minerals, 7(12), 240.
doi:10.3390/min7120240
Joseph-Soly, S., Quast, K., & Connor, J. N. (2015). Effects of eh and pH on the oleate flotation of iron oxides. Miner. Eng., 83, 97–104 (in Russian). doi:10.1016/j.mineng.2015.08.014
Tusupbaev, N. K. (2016). [Composite aerofloats for gold ore flotation intensification]. In International scientific and practical conference "Effective technologies of non-ferrous, rare and precious metal production" (in Russian). doi:10.31643/2018-7.03
Malyshev, V. P., Makasheva, A. M., Kaikenov, D. A., Krasikova, Yu. S. (2018). [Development of the probabilistic theory of ore self-grinding]. Complex use of mineral raw materials, (4), 87–97 (in Russian). doi:10.31643/2018/6445.34
Khomenko, O. E., & Lyashenko, V. I. (n.d.). Resource-saving technologies of ore mining at great depths. News of the Higher Institutions. Mining journal, (8), 23–33 (in Russian). doi:10.21440/0536-1028-2018-8-23-33
Kolesnikov, V. A., Ilyiin, V. I., Brodskiy, V. A., Kolesnikov, A. V. (2017). [Electroflotation in the processes of water purification and extraction of valuable components from liquid technogenic waste. Review]. Theoretical foundations of chemical technology, 5(4), 361–375 (in Russian). doi:10.7868/S0040357117040054
Inyang, H. I., Bae, S., Pando, M. A. (2016). Contaminant dust suppression materials: A cost-effectiveness estimation methodology. Measurement, 93, 563–571. doi:10.1016/j.measurement.2016.07.024
Li, J., Zhou, F., & Liu, H. (2015). The selection and application of a compound wetting agent to the coal seam water infusion for dust control. Int. J. Coal Prep. Util., 36(4), 192–206.
doi:10.1080/19392699.2015.1088529
Ren, W., Wang, D., Guo, Q., & Zuo, B. (n.d.). Application of foamtechnology for dust control in underground coal mine. Int. J.Min. Sci. Technol, (24), 13–16.
Kouzov, P. A. (1974). Foundations of the analysis of industrial dusts and crushed materials disperse composition. Leningrad, USSR: Khimiya (in Russian).
Agapova, V. T., Pitsyk, Yu. V., & Shishatsky, A. G. (2010). [Reduction of sinter gases dustiness by improving sinter pelletizing]. Scientific Bulletin of the National Mining University, 7-8, 90-92 (in Russian).
Aliev, G. M. (Ed.). (1986). Dust collection and purification of industrial gases techniques. Moscow, USSR: Metalurgiya (in Russian).
Pitsyk, Y. V., Shishatsky, A. G., & Agapova, V. T. (2012). [The ways to improve environmental safety in the zone of agglomeration production influence]. Metallurgical and Mining Industry, (5), 97–99 (in Russian).
Shishatsky, A. G., & Pitsyk, Yu. V. (2010). [The influence of surfactants on the wettability of the granular materials]. Bulletin of Kremenchug Mikhail Ostrogradsky National University, 2(61), 117–119 (in Russian).
Andrianov, E. I. (1981). Methods for determining powdered materials rheological characteristics strength. Moscow, USSR: Khimiya (in Russian).
Zimon, A. D. (1974). Adhesion of liquid and wetting. Moscow, USSR: Khimiya (in Russian).
Fomin, S. P, Agapova, V. T., & Shishatsky, A. G. (2006). Ukraine Patent No. 15185 А. Kyiv, Ukraine. Ukrainian Institute of Industrial Property (in Russian).
Fomin, S. P., Agapova, V. T., Shishatsky, A. G., Petlyak, O. G., Pitsyk, Yu. V. (2008). [Reduction of dust emissions in agglomerate production]. In Ecological Problems of Mining and Metallurgical Complex of Ukraine in the Conditions of Balanced Development Principles Formation. Materials of Scientific and Practical Conference (pp. 215–220). Kyiv, Ukraine: Environmental education and information centre (in Russian).
Abramzon, A. A., Bocharov, V. V., & Gayevoy, G. M. (1979). [Surfactants: a handboo]k. Leningrad, USSR: Khimiya (in Russian).
Savitsky, D. P., Makarova, K. V., & Makarov, A. S. (2012). [The surface-active properties of sodium lignosulfonate aqueous solutions]. Chemistry of vegetable raw materials, 2, 41-45 (in Russian).
Shchukin, E. D., Pertsov, A. V., Amelina, E. A. (1982). Colloid chemistry. Moscow, USSR: Publishing house of Moscow University (in Russian).
Evstigneyev, E. I., Yuzikhin, O. S., Gurinov, A. A., Ivanov, A. Y., Artamonova, T. O., Khodorkovskii, M. A., … Vasil’ev, A. V. (2015). Chemical structure and physicochemical properties of oxidized hydrolysis lignin. Russ. J. Appl. Chem., 88(8), 1295-1303. doi:10.1134/s107042721508011
Golovin, Y. I., Viktorov, S. D., Tyurin, A. I., Kochanov, A. N., Shuklinov, A. V., Pirozhkova, T. S., Shuvarin, I. A. (2016). [The dimensional effects of elastic and strength properties of polycrystalline materials individual phases and interphase boundaries]. Bull. Russ. Acad. Sci.: Phys., 80(5), 573–577 (in Russian).
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