转炉渣钢间传质的冷态模拟试验

在转炉冶炼过程中,底吹参数对渣钢间传质起着非常重要的作用。为了研究底吹参数如底吹枪支数、底吹强度对传质效果的影响,以100t转炉为原型,根据相似原理,通过冷态模拟试验研究了苯甲酸在油水间的传质规律。试验表明,传质系数随着底吹强度增加呈现先增加后减小的现象;最优底吹流量随底吹枪支数增加而增加,底吹枪由4支逐渐增加到10支时,最优底吹流量由0.08增加至0.25m3/(t·min);最优单支枪供气强度为0.02~0.025m3/(t·min),且随底吹枪支数增加略有增加。

Cold simulation experiment of converter slag-metal mass transfer

Bottom blowing parameters are of great importance to the slag-metal mass transfer during combined blowing converter steelmaking. In order to reveal the influence of bottom blowing parameters such as nozzle amount and intensity on the mass transfer coefficient，taking 100 t converter as the prototype，the mass transfer regularities between machine oil and water were studied by the cold simulation experiment based on similarity principle. The experiment results showed that mass transfer coefficient firstly increased and then decreased when the bottom blowing intensity increased，and the optimum bottom blowing flow rate increased when the bottom blowing nozzle amount increased. When the bottom blowing nozzle amount increased from four to ten，the optimum bottom blowing flow rate increased from 0.08 to 0.25 m3/(t·min). The optimum individual intensity was 0.02-0.025 m3/(t·min) and increased gradually when the bottom blowing nozzle amount increased.