THREE-DIMENSIONAL MODELLING OF THE HEAT TRANSFER IN THE WALL OF A BLAST FURNACE MIDDLE ZONE

摘要

This paper describes a mathematical model to simulate the three-dimensional heat transfer in a wall consisting of criss-cross refractories and water-cooling components, with special reference to the condition in the blast furnace middle zone from the lower shaft down to the blast tuyere. A simple, effective solution technique is developed based on the FEM (Finite Element Method) principles. The proposed approach is validated by good agreement between computed and measured radial temperature distributions, and has been used to study the heat transfer process in the blast furnace wall. The results indicate that the heat transfer and hence the erosion in the furnace wall can be controlled by properly adjusting blast furnace operation condition and in particular, the cooling water supply.