Evaluation of Low-Reducible Sinter in Blast Furnace Technology by Mathematical Model Developed at Centre ENET, VSB – Technical University of Ostrava

Authors: S. Jursová, P. Pustějovská, S. Brožová, J. Bilík

Abstract:

The paper deals with possibilities of interpretation of iron ore reducibility tests. It presents a mathematical model developed at Centre ENET, VŠB – Technical University of Ostrava, Czech Republic for an evaluation of metallurgical material of blast furnace feedstock such as iron ore, sinter or pellets. According to the data from the test, the model predicts its usage in blast furnace technology and its effects on production parameters of shaft aggregate. At the beginning, the paper sums up the general concept and experience in mathematical modelling of iron ore reduction. It presents basic equation for the calculation and the main parts of the developed model. In the experimental part, there is an example of usage of the mathematical model. The paper describes the usage of data for some predictive calculation. There are presented material, method of carried test of iron ore reducibility. Then there are graphically interpreted effects of used material on carbon consumption, rate of direct reduction and the whole reduction process.

Keywords: Blast furnace technology, iron ore reduction, mathematical model, prediction of iron ore reduction.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1100557

References:

[1] Mandal, G. K., Sau, D. C., Das, S. K., et al. A Steady State Thermal and Material Balance Model for an Iron Making Blast Furnace and Its Validation with Operational Data. Transactions of the Indian Institute of Metals. April 2014, Volume: 67, Issue: 2, pp. 209-221,
[2] Jha, Rajesh, Sen, Prodip Kumar, Chakraborti, Nirupam. Multi-Objective Genetic Algorithms and Genetic Programming Models for Minimizing Input Carbon Rates in a Blast Furnace Compared with a Conventional Analytic Approach. Steel Research International. February 2014, Volume: 85, Issue: 2, pp. 219-232.
[3] Zhang, Jian-liang et al. Comprehensive Mathematical Model and Optimum Process Parameters of Nitrogen Free Blast Furnace Journal of Iron and Steel Research International. FEB 2014, Volume: 21, Issue: 2, Pages: 151-158.
[4] Harvey, Jean-Philippe, Gheribi, Aimen E. Process Simulation and Control Optimization of a Blast Furnace Using Classical Thermodynamics Combined to a Direct Search Algorithm. Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science. FEB 2014, Volume: 45, Issue: 1, pp. 307- 327.
[5] Froehlichova, M.; Findorak, R.; Legemza, J. Structural Analysis of Sinter with Titanium Addition. Archives of Metallurgy and Materials. Volume: 58 Issue: 1 Pages: 179-185 Published: 2013
[6] P. Pustejovska, S, Jursova, S. Brozova. Determination of Kinetic Constants from Tests of Reducibility and their Application for Modelling in Metallurgy, Journal of the Chemical Society of Pakistan, 2013, 35 (3), pp. 565-569.
[7] J. Tuma, Evaluation of Iron-Bearing Materials Reducibility by a Mathematic Model. Metallurgical Papers, no. 4 (1988).
[8] Pustějovská, P. Tůma, J. Staněk, V. Křišťál, J. Jursová, S. Bilík, J. Using a mathematical model of counter-current flow in a blast furnace to evaluate reducibility of iron-ore-bearing raw materials. Steel Research International (article in press)
[9] P. Pustějovská, S. Jursová, Process Engineering in Iron Production. Chemical and Process Engineering 2013, 34 (1), pp. 63-76.
[10] J. Bilik, P. Pustejovska, S. Brozova, S. Jursova, Efficiency of hydrogen utilization in reduction processes in ferrous metalurgy, Scientia Iranica, 20 (2013), pp. 337-342.
[11] J. Bilík. Analytical models of blast furnace operation in current metallurgical industry, Hutnické listy, 1999, Vol. 54 (13-16).(in Czech)
[12] P. Pustějovská, S. Brožová, S. Jursová. Environmental Benefits of Coke Consumption Decrease. In 19th International Conference on Metallurgy and Materials: In Metal 2010, Rožnov pod Radhoštěm, 18. – 20. 5. 2010, Tanger, spol. s r. o., Ostrava , s. 79-83,
[13] E. Kardas, A Technical and Economic Analysis of Pig Iron Production. In Thermec 2009: 6th International Conference on Processing and Manufacturing of Advanced Materials: 25.-29.8.2009. Berlin, Germany. PTS 1-4 Book Series: Materials Science Forum, vol. 638-642 pp. 3291- 3296 (2009).
[14] A. Konstanciak, The effect of coke quality of blast furnace working. Thermec 2011, PTS 1-4. Vol 706-709, pp. 2164-2169.
[15] S. Jursová. J., Bilík, Innovative Research in the Field of Reductive Processes,.13th SGEM GeoConference on Science and Technologies In Geology, ISSN 1314-2704, June 16-22, 2013, Vol. 2, pp. 589 - 594.
[16] P. Pustějovská, S. Jursová. Research on High Temperature Properties of Iron Ore Materials. Acta Metallurgica Slovaca, Vol. 20, 2014, No. 2, p. 135-139.
[17] Ingaldi, M. Jursová, S. Economy and Possibilities of Waste Utilization in Poland. In 22nd International Conference on Metallurgy and Materials, 15. - 17. 5. 2013, Brno, Czech Republic. ISBN 978-80- 87294-41-3.
[18] ISO 4695:2007