高炉軟化融着帯の溶解に関する検討

概要

論文の詳細を見る
Melt-down mechanism of softening-melting layers in Hirohata No.1 BF (blast furnace) is examined. As the results with the upper part of "root" (the lower part of softening-melting zone, the end of which contacts with the furnace wall), heat of fusion is considered to depend on the reduction rate (R.R.) of softening-melting layer. The values are about 3×10^3kcal/t-softening-melting layer with R.R.∿50%, 8×10^3kcal/t with R.R.∿70% and 31×10^3kcal/t with R.R.>70%. From these values and calculated melt-down volume at "root" of Hirohata No.1 BF, heat transfer coefficient for melt-down of "root" is obtained. By applying the relation to the estimated softening-melting zone in Kimitsu No.3 BF, melt-down volume agrees approximately with the heat transfer quantity. Melt-down of inverse V-shaped softening-melting zone is concluded to occur by this mechanism.
社団法人日本鉄鋼協会の論文
1979-09-01