Effect of the Thermal Insulation of the Inner Wall on the Thermal Condition of the Air Tuyeres of Blast Furnaces

Procedures for calculating heat losses and temperature are adapted to air tuyeres of blast furnaces. The effect of the thickness and thermal conductivity of the insulation liner on the inner wall of an air tuyere and the air gap between them on the heat losses through the inner wall and the temperatures of the liner and inner wall is analyzed using an Excel linear code. It is shown that the air gap between the liner and the inner wall has a strong effect on the heat losses through the inner wall and its temperature.