ソリューションロス反応に起因する塊内強度分布を考慮した高炉内コークス粒径変化の推定(高炉内現象)(<特集>製銑技術の拡大と高度化)

概要

論文の詳細を見る
The deadman coke was sampled by the core probe from Kobe No.3BF at shutdown. On the basis of the sampling results, the decrease of coke size by solution loss reaction was evaluated from the coke degradation model considering the strength distribution. The main results obtained are as follows. 1) The coke size decreases by the degradation of reacted layer near the coke surface by solution loss reaction. 2) The accumulation of fine coke in the deadman is derived from the solution loss reaction zone rather than the raceway by evaluating temperature hystory. This affects the permeability in the blast furnace. 3) The decrease in coke size calculated from the coke degradation model, which takes into account the critical strength of 20×10^5 Pa, results in the average of 10×10^<-3>m and is similar to the sampling results in the blast furnace. Consequently, this model is possibly applied to the criterion of estimating coke degradation in the blast furnace.
社団法人日本鉄鋼協会の論文
1987-11-01