ガス流れ,伝熱,反応を考慮した高炉半径方向モデル
1980 年 66 巻 13 号 p. 1898-1907
詳細
1980 年 66 巻 13 号 p. 1898-1907
In consideration of the radial distribution of materials in the blast furnace, a new mathematical model of the blast furnace has been developed. This model consists of heat and mass balance equations at the existence of three phases (gas-solid-liquid) and the equation of motion for gas. Assuming streamline of solid and liquid, the characteristic method has been employed to solve these equations.
By the mathematical model, the following results have been obtained.
1. Calculated isothermal line (1 400°C) is similar to that of quenched blast furnace.
2. The distributions of temperature, composition and mass velocity in the upper part of the shaft is strongly affected by the O/C distribution.
3. In the lower part of the blast furnace, the dead zone plays as a heat reserved zone and has the influence of the formation of the inverted V-shaped cohesive zone.
