高炉の装入物分布に及ぼすガス流の影響(<特集>製銑)

概要

論文の詳細を見る
The surface angle of burden and the process of formation of burden distribution were studied under conditions of gas flow with the aid of experiments and theoretical calculations. The following results were obtained : (1) The gas flow affects the burden distribution in three ways, namely, the decrease in surface angle of burden, the collapse of surface coke and the transient fluidization of coke at furnace center, when ore is charged. (2) The surface angle depends on the value of ρu^2 of gas and is 2 to 7 degree lower with normal gas flow in blast furnace than without gas flow. (3) The collapse of surface coke in charging ore becomes considerable with increasing gas flow rate. (4) When ore moves from the periphery toward the center, gas flows avoiding ore bed because of its low permeability, collects at the center and fluidizes the coke there, blocking the ore motion. (5) Such a phenomenon to form coke pillar at the center is to be rather observed with pellets than sinter.
社団法人日本鉄鋼協会の論文
1980-11-01