氧气底吹造锍过程中气泡行为的水模实验  

Water Model Study of Bubble Behavior in Matte Smelting Process with Oxygen Bottom Blowing

作　　者：王东兴[1] 张廷安[1] 刘燕[1] 朱小峰[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2013年第12期1755-1758,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50974035;51074047);辽宁省科技创新团队项目(LT2010034);教育部高等学校博士学科点专项科研基金资助项目(20050145029);辽宁省青年人才基金资助项目(2005221012);辽宁省财政厅/省计划项目(200921007)

摘　　要：通过底吹炼铜转炉水模型实验,研究底吹造锍转炉中喷嘴数量、喷嘴角度、喷嘴直径、气流速度等因素对转炉熔池气泡大小、气含率及液面喷溅的影响规律.结果表明:喷嘴直径的增大不利于气泡微细化,且加剧了液面喷溅现象;喷嘴角度的增大有利于减小喷溅,但气含率下降;气流速度的增大有利于气泡微细化,显著提高气含率,但喷溅比较剧烈.与单喷嘴喷吹相比,在总喷气量相同的条件下,双喷嘴喷吹具有明显的优势,两种方法的气泡微细化程度差别不大,但是双喷嘴的喷溅情况明显减弱;双喷嘴夹角44°时能获得最大的气含率,约为9%.Water model study of oxygen bottom blowing converter for matte smelting was carried out, and the effects of main factors such as nozzle numbers, angles, diameters and the gas velocity on the mean bubble diameter, gas holdup and liquid splashing were investigated. The results show that large-diameter nozzle increases the mean bubble diameter, and leads to splashing with serious slag entrapment. The increase of inclination angle of nozzles weakens the splashing in the bath and decreases the gas holdup. Larger gas velocity has advantage for bubbles dispersion and disintegration, but the splashing gets more serious. Compared with single nozzle, the performance of double nozzle is better, and its splashing is weaker. When the angle between two nozzles is 44°, the gas holdup reaches its maximum of 9%.

关 键 词：水模型 底吹 造锍 射流 气含率 气泡微细化 

分 类 号：TF811[冶金工程—有色金属冶金]