Measuring and Modeling of Viscosity and Surface Properties in High Temperature Systems

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概要

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• In order to be able to understand and model the kinetics of heterogeneous reactions and transport phenomena it is necessary to have experimental data of physical properties like viscosity, surface energy and interfacial energy. In this study viscosity of high-melting slags containing chromium oxides were measured. Central results and observed relationships and modelling are described. The results showed that addition of chromium oxide into the slag decreases the viscosity but the influence becomes weaker at high CrOx contents. The viscosity–composition relation was evaluated by a modified Iidas model and a good agreement between the experimental and calculated results was observed.Interfacial phenomena between liquid metal and slag with gas bubbles entering through the metal–slag interface were investigated by X-ray transmission technique. Bubble behaviour at metal–slag interface and dispersion of metal droplets into the slag were measured as a function of interfacial tension, gas bubble size and slag viscosity. The effect of different parameters on metal entrainment is discussed.

• 2006-03-15

著者

• HOLAPPA Lauri

  Helsinki University of Technology, Laboratory of Metallurgy

• FORSBACKA Lasse

  Outokumpu Stainless Oy

• HAN Zhijun

  State Key Laboratory of Advanced Iron & Steel Processes and Materials, Central Iron & Steel Research

• Holappa Lauri

  Helsinki University Of Technology

• Holappa Lauri

  Helsinki University Of Technology Laboratory Of Metallurgy

• Han Zhijun

  State Key Laboratory Of Advanced Iron & Steel Processes And Materials Central Iron & Steel R

関連論文

• Measuring and Modeling of Viscosity and Surface Properties in High Temperature Systems
• Estimation of Surface Tension of Molten Silicates Using Neural Network Computation
• Evaluation of the Surface Tension of Ternary Silicate Melts Containing Al_2O_3, CaO, FeO, MgO or MnO
• A Model for Estimating Viscosities of Aluminosilicate Melts Containing Alkali Oxides
• Surface Tension Evaluation of Molten Silicates Containing Surface-active Components (B_2O_3, CaF_3 or Na_2O)
• The 5th Japan-Nordic Countries Joint Symposium on Science and Technology of Process Metallurgy
• Mechanisms of Iron Entrainment into Slag due to Rising Gas Bubbles
• Simulation of Microstructure of As-cast Steels in Continuous Casting

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