论文部分内容阅读
在顶/底复吹转炉水模中,作了顶底、吹参数对熔池搅拌混匀时间和钢、渣混合状况影响的试验,并在工业性转炉中,作了顶、底吹参数对纯供氧时间、去磷偏离平衡系数、钢铁料消耗和终渣氧化铁含量影响的试验。结果表明:(1)对于底吹中等或中等以上气量[qb≥0.08～0.1标米~3/(分·吨)]的顶/底复吹转炉,顶枪可用高枪定位操作;对于底吹小气量[qb<0.08标米~3/(分·吨)]的复吹转炉,必须重视发挥顶枪调节熔池搅拌混匀时间和钢、渣混合的作用;(2)底吹小气量[gb=0.03～0.06标米~3/(分·吨)]复吹转炉的优越性,需要在吹炼前中期实行高氧压、高强度、高枪位操作,控制冲击熔池深度比 hT/H=0.3和终期采用压枪操作(其 LT=18～20dT,T=1.5～2.0τT.s,hT/H=0.6)才能充分发挥;底气的作用则在于保持吹炼平稳,使上述顶枪操作得以实现。
In the top / bottom blown converter water mold, made the top and bottom, blowing parameters of the mixing pool mixing time and the impact of steel and slag test, and in the industrial converter, made the top and bottom blowing parameters Pure oxygenation time, deviations from balance of phosphorus removal, consumption of steel material and final iron oxide content. The results show that: (1) For the top / bottom blown converter with medium or above bottom blowing volume [qb≥0.08 ~ 0.1 ~ 3 / (t · t)], Small blow [qb <0.08 standard meters ~ 3 / (points · tons)] of the blown converter, we must attach great importance to play a top gun to adjust the pool mixing time and steel mixing slag role; (2) gb = 0.03 ~ 0.06 standard meters ~ 3 / (points · ton)] the advantages of complex blowing converter, the need to implement the mid-blowing before blowing high oxygen pressure, high intensity, high gun position operation, control the depth of the impact puddle than hT / H = 0.3 and the final use of pressure gun operation (LT = 18 ~ 20dT, T = 1.5 ~ 2.0τT.s, hT / H = 0.6) can fully play; the role of the bottom gas is to maintain smooth blowing, Gun operation to be achieved.