| 摘要 |
PURPOSE:To freely control the distribution of a gas stream at the lower part of a blast furnace for accelerating reducing reaction and stabilizing the operation of the blast furnace, by mixing coke or coal at a predetermined ratio in an ore layer to be alternately charged with a coke layer in the blast furnace. CONSTITUTION:In alternately charging ore and coke layers in the blase furnace to refine pig iron by reducing with a high-temp. reducing gas stream, coke or coal is mixed in said ore layer at a ratio <=20%. By this method, the distribution of the gas stream along a radial direction at the lower part of the furnace is freely controlled, so as to accelerate reducing reaction and to stabilize the operation of the blast furnace. |
