触媒表面担持高反応性コークスの特性(製銑)

概要

論文の詳細を見る
The development of production and utilization technology of highly reactive coke is significant in order to improve blast furnace reaction efficiency. In this report, the characteristics of catalyst-coated highly reactive coke produced by 'post-addition of catalyst to coke' method were investigated. First, the catalytic effect of Fe and Ca on graphite and deashed coke during the C-CO_2 reaction was investigated. Fe and Ca addition increased the reaction rate and decreased the reaction beginnning temperature. Secondly, it was shown that the reaction rate of Fe or Ca coated coke was kept high until the weight loss reached 10 percent. This means that the catalytic effect is maintained high in the thermal reserve zone of the blast furnace. Furthermore, it was proved that 70% of the catalyst coated on the coke surface still remains after drop impacts and it is considered that the loss of catalyst during coke handling and transportation is small. Catalyst-coated highly reactive coke seems to be promising to improve blast furnace reaction efficiency.
社団法人日本鉄鋼協会の論文
2006-08-01