摘要
通过相当于太钢75t椭圆形钢包容量1/9的水模型，采用N2模拟底吹氩和顶吹氧试验，研究了VOD底吹位置和吹气量对钢液混匀时间的影响。试验结果表明，模型合理吹气量为1．1～1．3m^3／h，相当于75t钢水VOD处理的吹气量350～460L／min；单底吹砖位置越靠近钢包中心，混匀时间越短；用双底吹砖或三底吹砖吹气时，混匀时间明显缩短，但存在最佳底砖分布位置。顶底复吹时，为取得较好的效果，亦存在顶吹．底吹气量的最佳配合及相应的有利位置。
The effcct of VOD bottom blowing location and blowing rate on mixing time of molten steel was studied by a water model corresponding to 1/9 volume of the 75 t ladle with oval cross section at Taiyuan Steel. The test results showed that the avails,hie blowing rate for model was 1.1 ～ 1.3 m^3/h corresponding to flowing rate 350～ 460 L/rain in VOD refining of 75 t molten steel; the location of single blowing brick at bottom was nearer to ladle center the mixing time was shorter; and the mixing time was obviously shorter as bottom blowing with 2 or 3 blowing bricks but there were optimum distribution locations of bottom bricks. There were optimum matching of top blowing rate and bottom blowing rate and corresponding location during top-bottom blowing to get better effect.
出处
《特殊钢》
北大核心
2006年第2期40-42,共3页
Special Steel
