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基于相似原理,利用物理模拟方法研究了145吨吹氩钢包内的渣-金界面卷混行为及夹杂物的去除行为。选择煤油和真空泵油的混合物来模拟钢包渣,考察了吹气量对渣-金卷混的影响;选择乳状液滴作为模拟夹杂物,考察了时间、吹气量对夹杂物去除行为的影响规律。结果表明:存在一个发生钢包渣卷入钢液中的临界气量,吹气量一旦超过该气量,钢包发生卷渣的频率随气量增加而增大;大多数夹杂物通过吹氩处理8 min可去除;夹杂物的去除率随气量增加先增大后减小,且0.379 NL·min-1的气量为最优的去夹杂气量。
Based on the principle of similarity, the behavior of inclusions and inclusions in the slag-gold interface in a 145-ton argon-blown ladle was investigated by means of physical simulation. The mixture of kerosene and vacuum pump oil was chosen to simulate ladle slag. The influence of air volume on the slag-gold coiling was investigated. The effect of time and air volume on the removal of inclusions was investigated by selecting the emulsion droplets as the simulated inclusion. The results show that there is a critical gas volume in which the ladle slag is entrained into the molten steel. Once the blowing volume exceeds the gas volume, the frequency of ladle slag increases with the increase of gas volume. Most inclusions can be removed by argon blowing for 8 min. The removal rate of inclusions first increases and then decreases with the increase of gas flow rate, and the gas volume of 0.379 NL · min-1 is the optimal amount of entrapped gas.