Author:
Zhang Limin,Zhu Liguang,Zhang Caijun,Wang Zhiqiang,Xiao Pengcheng,Liu Zenxun
Abstract
The selection of lining material for a steel ladle is important to heat preservation of molten steel. Aerogel insulation materials have very low thermal conductivity, however, they are rarely used in steel ladles. In this paper, the application of a new silica aerogel material on the steel ladle insulation layer is tested, and a new calculation method is designed to study its insulation effect. In other words, the ladle wall temperature is obtained by finite element model (FEM) and experiments, then the heat emission from the ladle wall is calculated by the Boltzmann mathematical model according to the ladle wall temperature, and the temperature loss of molten steel is calculated inversely according to the heat emission of ladle wall. Compared with the original steel ladle (comparison ladle), the application effect is analyzed. Due to the stable heat storage of the ladle wall after refining, the validity of the models are verified in ladle furnace (LF) process. The results show that the new calculation method is feasible, and the relevant parameter settings in the FEM and Boltzmann mathematical model are correct. Finally, after using the new aerogel insulation material, the temperature of molten steel is reduced by 16.67 °C, and the production cost is reduced by CNY 5.15/ton of steel.
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces
Reference41 articles.
1. Fluid Flow and Heat Transfer in the Ladle during Teeming
2. Physical simulation of symmetric alternating bottom blowing mixing behavior in double orifice ladle;Wang;China Metall.,2017
3. Thermal Modelling of the Ladle Preheating Process
4. Numerical simulation and field practice of flow field in 100 t bottom blown argon ladle;Wang;China Metall.,2018
5. Development and present situation concering heat transfer research of ladle;Liu;Iron Steel Res.,2007
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