Modelling the Tapping Process in Submerged Arc Furnaces Used in High Silicon Alloys Production

被引:27
|
作者
Kadkhodabeigi, Mehdi [1 ]
Tveit, Halvard [1 ]
Johansen, Stein Tore [2 ]
机构
[1] Norwegian Univ Sci & Technol NTNU, Dept Mat Sci & Engn, Trondheim, Norway
[2] SINTEF Mat & Chem, Flow Technol Grp, Trondheim, Norway
关键词
submerged arc furnace; tapping process; furnace crater pressure; bed permeability; computational fluid dynamics (CFD);
D O I
10.2355/isijinternational.51.193
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The tapping process is an important step in the silicon and ferrosilicon production process. Tapping is simply how to transfer the melt from the furnace into the ladle. The tapping process has always been a challenging industrial operation where the metal flow rate is influenced by many different phenomena. In this present work we present a model for the tapping of the submerged arc furnaces. Using the model the effects of furnace crater pressure, metal height and permeability of the different internal zones have been studied. The model is based on computational fluid dynamics (CFD) where the geometry is taken from industrial furnace geometry. The internal zones with individual permeabilities are defined based on information from furnace excavations. From the model we extract new information about the process and explain phenomena which control the tapping flow rate. It was found a very good agreement between the model predictions and industrial measurements.
引用
收藏
页码:193 / 202
页数:10
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