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机构地区:[1]东北大学材料与冶金学院,辽宁沈阳110004
出 处:《钢铁研究学报》2008年第6期18-22,共5页Journal of Iron and Steel Research
基 金:国家自然科学基金;上海宝钢集团公司联合资助项目(50274022;50674020)
摘 要:选择乳状液滴作为模拟夹杂物,利用物理模型研究了偏心底吹氩钢包内夹杂物的物理行为,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,较小气量在8 min内可将绝大部分的模拟夹杂物去除,而较大气量则需要16 min才能去除绝大部分的模拟夹杂物,所有气量在28 min内可将能够去除的模拟夹杂物几乎全部去除。在相对较短的吹气处理时间内,较小气量的去夹杂效果要优于较大气量。总体上看,存在一个获得去夹杂较佳效果的气量范围。The effects of time and gas flowrate on inclusion removal in a ladle with eccentric bottom gas blowing were investigated by choosing emulsion drops simulated as inclusions in a physical model. The results show that most of the inclusions can be removed in eight minutes with smaller flowrates, while they will be removed in six- teen minutes with larger flowrates. All the inclusions which have the possibility to be removed almost disappeared from the system in twenty-eight minutes. Smaller gas flowrates seemed to be more efficient for inclusions removal within a shorter time, and there was a reasonable range of gas flowrate for the best inclusion removal.
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