摘要
采用水模型实验模拟了钢包钢水中微小相去除夹杂物的现象,利用高速摄像仪和图像处理技术分析了小气泡和夹杂物模拟物的运动行为,并且进行了净化剂和3种制球方式去除夹杂模拟物的实验,分析了气泡发生方式去除夹杂物的效果和原因,以提高钢水洁净度。结果表明:加入净化剂后,促进了夹杂物的去除,发现了气泡捕获多个夹杂模拟物的现象。在不同时刻,夹杂模拟物的去除率比没有产生小气泡时的去除率要高,平均提高13.66%。在3种气泡发生方式中,由于气泡生成时对内核材料的冲击作用,促进了净化剂的裂解,使得以外层净化剂加内核模拟物方式形成的复合球体最容易产生小气泡,夹杂物去除率100%,效果最好。
The phenomenon of inclusion removal by fine and uniform heterophases in the molten steel in the ladle was simulated in the water model. The movement behavior of small bubbles and inclusions was analyzed by using of highspeed video camera and image processing technology. Furthermore, the experiment in inclusion simulant removal by purifying agent in three ball-making modes was also carried out in the water model. The effects and causes of inclusion removal under different bubble generation method were analyzed to improve the cleanliness of molten steel. The results show that the purifying agent promotes the removal of inclusions. There is the phenomenon of the bubble capturing multiple inclusion simulants. The rate of inclusion removal by the heterophases at different time is higher than the rate of inclusion removal without small bubbles and the average number raises 13.66%. The composite sphere produced outer layer of purifying agent and the kernel of simulants is most likely to produce fine bubbles and to remove inclusions 100% in three ball-making modes. Because the bubbles are generated, the bubbles impact on the core material to promote cracking of the purifying agent, so more bubbles are generated.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2015年第8期24-28,共5页
Journal of Iron and Steel Research
基金
国家自然科学基金资助项目(51374081)
关键词
净化剂
气泡
钢包
水模型
夹杂物
purifying agent
bubble
ladle
water model
inclusion
