100 t复吹转炉底吹透气砖分布的数值模拟

利用ANSYS Fluent软件研究了某钢铁企业100 t复吹转炉底吹透气砖分布对钢水的流场和混匀时间的影响。结果表明，当底吹透气砖位置不同时，转炉内钢水的流场分布也不同。在总吹气量（100 m3/h）相同的情况下，当采用双透气砖底吹气（每个透气砖的吹气量为50 m3/h）时，钢水的混匀效果优于单透气砖底吹气时的混匀效果，2块底吹透气砖对角布置时钢水混匀时间最短，为204 s，其次为4块底吹透气砖平面对称布置，钢水混匀时间为255 s。

Numerical simulation of purging plug distribution of 100 t top- bottom combined blown converter

The effects of purging plug distribution of 100 t combined blown converter on the steel flow field and mixing time were investigated by using the ANSYS Fluent software. The results showed that the flow field distribution of the molten steel was different with different bottom- blown configuration. With 100 m3/h total bottom gas flow rate, the mixed effective with double bottom- blown（the flow of each bottom- blown was 50 m3/h）was better than that with single bottom- blown, and the shortest mixing time of 204 s was attained with 2 bottom blown elements located asymmetrically on the cross, and the shorter mixing time of 255 s was attained with 4 bottom blown elements with plane symmetric distribution.