Effect of Interaction Area on the Thermodynamics and Kinetic Modelling of BOF Converter
The simulation of basic oxygen furnace process(BOF)deals with several complex physical and chemical phenomena.An exact model allows the optimization of the tap to tap time which reduces the operation costs and increases the productivity of the steel plant.Based on several assumptions a new model for BOF converter has been developed with the program MatLab?.A thermodynamic and kinetic background makes it possible to simulate the behavior of elements in metal and slag.The converter steelmaking process is described by using one reaction zone as a heterogeneous thermodynamic system.Nearly all components can be conveyed between slag and metal phase as a result of simultaneous oxidation-reduction reactions on the interaction surface.Carbon is an exception due to carbon monoxide which is the oxidation product and is transferred to the gas phase.This paper deals mainly with the effect of the interfacial surface on the rate of chemical reactions between metal and formed slag.The first assumption of the contact area is based on the converter geometry.Further considerations include the viscosity of the formed slag and the change of the reaction area caused by the formation of droplets in the emulsions phase of the blowing process.The rate limiting step of the reactions in the converter are based on material transport due to the high temperatures meanwhile the blowing.A comparison of both assumptions presents the importance of an optimal description of the interaction area.
interaction area BOF converter modelling thermodynamics kinetic
Philip BUNDSCHUH Johannes SCHENK Martin HIEBLER Axel SORMANN Harald PANHOFER
Chair of Ferrous Metallurgy,Montanuniversitaet Leoben,Franz-Josef Strasse 18,8700 Leoben,Austria Primetals Technologies GmbH,Turmstrasse 44,4031 Linz,Austria voestalpine Stahl Donawitz GmbH,Kerpelystrasse 199,8700 Leoben,Austria voestalpine Stahl GmbH,voestalpine Straβe 3,4020 Linz,Austria
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
151-154
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）