2016 Volume 30 Issue 2 Pages 140-149
In the blast furnace, there is a packed bed consists of coke and iron ore, and there is a counter flow of the condensed and gas phases. Controlling the liquid and solid flow and preventing accumulation of the liquid and the powder are important issues for the productivity and the stability of the blast furnace process. The flow of the packed bed of burden, and liquid and gas flows in the cohesive zone had been investigated. Here, studies on the permeability of the cohesive and dripping zone of the blast furnace are introduced, and how to control the physical properties of the liquid and powder are discussed for increasing the gas permeability in the packed bed. In addition, progress of numerical simulation with installing influence of the physical properties of liquid, gas and powder is introduced.
