Effect of Charging Methods, Furnace Design and Liquid Surface on Gas Flow in Blast Furnace

Abstract

Gas flow model in packed column with distributions of particle diameter, void ratio and temperature has been studied. This paper shows a newly developed model which can simulate the gas flow in blast furnace more precisely. In this model the gas source by chemical reaction, blast furnace profile, charging sequence, stock line profile and liquid surface were taken into consideration.
Concerning the upper part of the blast furnace, several charging methods were evaluated using two indices; channeling factor and index of ore by gas. Besides. the effect of stock line profile was theoretically solved. Concerning the lower part of the blast furnace, the inclination of the liquid surface was calculated under the influence of gas permeability, liquid level and blast volume. With respect to the whole part of the blast furnace the optimum blast furnace profile was discussed from the view point of pressure drop.