1987 Volume 73 Issue 15 Pages 2044-2051
Model experiment and mathematical modeling were carried out to elucidate the liquid flow and liquid holdup in the lower part of blast furnace.
Slag viscosity was measured in some ranges of temperature and slag composition in the dripping zone, and computer program for the estimation of slag viscosity was developed. According to the results of model experiment, it was verified that DARCY-type equation can be practically used for the analysis of liquid flow resistance in irrigated packed bed. Molten slag can not flow through the 'deadmann' zone under the condition that coke diameter in the 'deadmann' decreases less than 35 percent of initial coke diameter or void fraction in the 'deadmann' decreases less than 65 percent of initial void fraction of coke bed, or slag viscosity raises more than 6-10 poise, i.e. 'deadmann' temperature falls to lower than 1 400°C.
