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To investigate the flow of primary slag bearing TiO_2 in the cohesive zone of blast furnaces,experiments were carried out based on the laboratory-scale packed bed systems. It is concluded that the initial temperature of slag dripping increases with decreasing Fe O content and increasing TiO_2 content. The slag holdup decreases when the Fe O content is in the range of 5wt%–10wt%,whereas it increases when the Fe O content exceeds 10wt%. Meanwhile,the slag holdup decreases when the TiO_2 content increases from 5wt% to 10wt% but increases when the TiO_2 content exceeds 10wt%. Moreover,slag/coke interface analysis shows that the reaction between Fe O and TiO_2 occurs between the slag and the coke. The slag/coke interface is divided into three layers: slag layer,iron-rich layer,and coke layer. TiO_2 in the slag is reduced by carbon,and the generated Ti diffuses into iron.
To investigate the flow of primary slag bearing TiO_2 in the cohesive zone of blast furnaces, experiments were carried out based on the laboratory-scale packed bed systems. It is concluded that the initial temperature of slag dripping increases with decreasing Fe O content and increasing TiO_2 content. The slag holdup decreases when the Fe content is within the range of 5 wt% -10 wt%, while it increases when the Fe content exceeds exceeds 10 wt%. Meanwhile, the slag holdup decreases when the TiO 2 content increases from 5 wt% to 10 wt The slag / coke interface analysis shows that the reaction between Fe O and TiO 2 occurs between the slag and the coke. The slag / coke interface is divided into three layers: slag layer, iron -rich layer, and coke layer. TiO_2 in the slag is reduced by carbon, and the generated Ti diffuses into iron.