The Study of the Distribution and Deformation of Burden Layer in 250 Ton/Day Mini Blast Furnace Using Discrete Element Method

Sungging Pintowantoro, Mas Irfan P. Hidayat, Fakhreza Abdul, Mohammad Rizki Febrianto, Hamzah Syaifullah

Abstract


Based on the abundant nickel ore resources in Indonesia, it is necessary to develop nickel ore processing technology. One of the commercially proven nickel processing technology is Mini Blast Furnace (MBF). The feeding process in MBF using charging system. So, the burden material distribution in MBF can be controlled. The burden material controlling is important process in MBF. The distribution of burden material will affect the gas flow in MBF. This research focuses to study the effect of large bell diameter size to burden materials distribution in MBF using Discrete Element Method. After analysis, the differences of large bell diameter size will affect the burden materials distribution. If the diameter of large bell is greater, the impact point during charging process will be closer to the wall area. Then, the impact area on the surface of the layer will be on top of the layer. The distribution of burden materials in MBF is influenced by large bell size, kinetic energy at impact, particle mass, and particle size and layer stability. For particles distribution, the particles with small density (coal and dolomite) tend to be concentrated in the center zone. On the other hand, the particles with large density (ore) tend to be concentrated in the intermediate and peripheral zone. For the MBF start-up process, the best gas flow can be achieved by using large bell and MBF inner diameter ratio of 7: 10.

Keywords


mini blast furnace; bell-type charging system; discrete element method; burden materials distribution.

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References


Chen, G., J., Sun, T., Lu, Q., “Study of the mechanism of the direct reduction roasting of the limonite in Jiangxi”. Journal of Chemical and Pharmaceutical Research, vol. 6(3), pp. 671-678, 2014.

Pickles, C.A., Forster, J., Elliot, R., “Thermodynamics analysis of the carbothermic reduction roasting of nickeliferous limonitic laterite ore” Miner Eng. vol. 65, pp. 33-40, 2014.

M. Rao, G. Li, T. Jiang, J. Luo, Y. Zhang, X. Fan, “Novel process and mechanisms of preparing ferronickel materials from nickeliferous laterite ores”, Journal of The Minerals, Metals & Materials Society, vol. 65, no. 11, pp. 1573-1583, 2013.

Y. Matsui, K. Shibata, and Y. Yoshida, “The principle of blast furnace operational technology and centralized gas flow by center coke charging,” Kobelco Technol. Rev., vol. 26, pp. 12–20, 2005.

M. Naito, K. Takeda, Y. Matsui, “Ironmaking technology for the last 100 years: Deployment to advanced technologies from introduction of technological know-how, and evolution to next-generation process”, ISIJ Int., vol. 55, no. 1, pp. 7-35, 2015.

W. Xu, S. Cheng, Q. Niu, G. Zhao, “Effect of the main feeding belt position on burden distribution during charging process of bell-less top blast furnace with two parallel hoppers”, ISIJ Int., vol. 57, no. 7, pp. 1173-1180, 2017.

T. Mitra, H. Saxen, “Investigation of coke collapse in the blast furnace using mathematical modelingand small scale experiments”, ISIJ Int., vol. 56, no. 9, pp. 1570-1579, 2016.

T. Mitra and H. Saxen, “Simulation of burden distribution and charging in an ironmaking blast furnace,” IFAC-PapersOnLine, vol. 28, no. 17, pp. 183–188, 2015.

V. B. Teffo and N. Naudé, “Determination of the coefficients of restitution , static and rolling friction of Eskom-grade coal for discrete element modelling”, The Journal of The Southern African Institute of Mining and Metallurgy, vol. 113, no. 4, pp. 351–356, 2013.

T. Pöschel and T. Schwager, Computational Granular Dynamics: Models and Algorithms, 1st ed., Berlin, Germany: Springer-Verlag, 2005.

A. K. Biswas, Principle of Blast Furnace Ironmaking-Theory and Practice, 1st ed., Calcutta, India: SBA Publications, 1981.

M. Geerdes, R. Chaighneau, I. Kurunov, Modern Blast Furnace Ironmaking, 3rd ed., Amsterdam, Netherland: IOS Press, 2015.

M. Ichida, M. Takao, Y. Morizane, T. Nakayama, K. Anan, K. Kakiuchi, I. Yamada, “Inner Profile and Burden Descent Behavior in the Blast Furnace,” Nippon Steel Tech. Rep. 94, 80–86, 2006.

Ichikawa, K., Kashihara, Y., Oyama, N., Hirosawa, T., Ishii, J., Sato, M., Matsuno, H., “Evaluating effect of coke layer thickness on permeability by pressure drop estimation model”, ISIJ int., vol. 57, no. 2, pp. 254-261, 2017.

Natsui, S., Takai, H., Nashimoto, R., Kikuchi, T., Suzuki, O., R., “Model study of the effect of particles structure on the heat and mass transfer through the packed bed in ironmaking blast furnace”, International Journal of Heat and Mass Transfer, vol. 91, pp. 1176-1186, 2015




DOI: http://dx.doi.org/10.18517/ijaseit.9.4.4479

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