Plenary Lecture

Thermal Destruction Modeling for Refractory Materials

Dr. Andrew Zabolotsky
"Magnezit group" ltd.
St. Petersburg
E-mail: zabolotsky@bk.ru

Brief biography of the speaker: Andrew V. Zabolotsky was born in St. Petersburg, Russia in 1975. He had graduated from St. Petersburg State Institute of Technology (Technical University), department of High-Temperature Materials in 1998. He had defended a thesis about technology of silicon nitride ceramics and received PhD degree in technical sciences in 2002. After graduating he worked at JSK “Sigma-T” (2000-2002) – a producer of high temperature testing equipment for ceramics and refractory materials as a head of heat insulation department. Between 2002 and 2004 he was a technologist at laboratory of “Refractory materials ltd.”, a company which produced refractory concrete for iron and steel industry. At the present time he is an engineer-technologist of “Magnezit Group ltd.” – one of the main producers of periclasse-carbon refractory materials in Russia and Europe. He had prepared about 30 papers for different journals in Russia and other countries (mostly between 2009 and 2013). He was a participant of several international conferences (for example IAS Conference in 2009 at Buenos Aires, Argentina, WSEAS Conference in Puerto de la Cruze, Spain in 2010). He is WSEAS (since 2010) and AIST (Association of Iron and Steel Technology) member since 2011. At the present time he is working with problems of heat exchange in refractory linings of metallurgical installations and using of mathematics methods for emergency forecasting in metallurgy. Also he is interested in thermal cracks growth modeling for brittle materials such as refractory ceramics and iron.

Abstract: Thermal destruction is one of the main reasons of metallurgical installations refractory linings fail, sometimes at the very beginning of their usage. The cause of destruction is mechanical strain, produced by thermal growth or compressing of material. Modern mathematics methods, such as FEM, allow calculating of so-called Dynamic Temperature Field (DTF), which is an initial data for further mechanical calculations. Numerous publications were devoted to the description of FEM usage for different industrial processes, metallurgy in particular. The calculation process has several difficulties, needed to be taken into consideration, commonly while working with 2D or 3D models. Mostly these difficulties could be annihilated while data preparation. For mechanical calculations a method of Moving Cellular Automata (MCA) is most convenient. This method could be used for complete DTF analysis or as a parallel calculation while DTF providing with FEM. Most publications describes so-called homogeneous method usage (it means, that each automata contain only one chemical phase). An author used a heterogeneous type of the method, where every automata had it’s own inner structure and was a container of several chemical phases and a combination of several small solid bodies. So, a rule of such automata destruction was prepared and used as a base of an original software project. This software was used for destruction modeling of iron casting mold and refractory lining of RH-degasser. The results were not against experimental data received.

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