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以相似模型实验理论为基础,针对工程设计的210t双联复吹转炉,通过冷态模型实验,研究了底吹元件数目、底吹元件布置方式、底吹供气强度、氧枪枪位对熔池混匀时间的影响.在实验条件下,采用八支底吹供气原件,相对集中布置在0.33D,0.62D的两个同心圆上时,可有效缩短混匀时间.对于脱磷转炉,当枪位在350mm(对应原型2800mm)、底吹供气强度为0.24Nm3/min时,混匀时间最短,比较合理的底吹供气强度在0.21~0.27Nm3/(min·t)范围内.对于脱碳转炉,当顶枪枪位在225mm(对应原型1800mm),底吹供气强度为0.18Nm3/min时混匀时间最短,比较合理的底吹供气强度在0.15~0.21Nm3/min范围内.
Based on the theory of similar model experiment, aiming at the design of 210t double combined blower converter, the number of bottom blowing components, arrangement of bottom blowing components, gas supply intensity of bottom blowing, Pool mixing time under the experimental conditions, the use of eight bottoms gas supply original, relatively concentrated in the 0.33D, 0.62D concentric circles on the two can effectively shorten the mixing time for the dephosphorization converter, When the gun position at 350mm (corresponding to the prototype 2800mm), bottom blowing air supply intensity of 0.24Nm3 / min, the mixing time is the shortest, more reasonable bottom blowing air supply strength in the range of 0.21 ~ 0.27Nm3 / (min · t). For the decarburization converter, when the gun position is 225mm (corresponding to the prototype 1800mm), the mixing time is the shortest at the bottom blowing gas supply strength of 0.18Nm3 / min, and the reasonable bottom blow gas supply strength is in the range of 0.15-0.21Nm3 / min Inside.