气泡微细化实验中均混时间的研究  

The study of uniform mixing time for bubble refinement

作　　者：刘燕[1] 张延安[1] 王强[1] 叶乐乐[1] 佐野正道[1] 赫冀成[1] 

机构地区：[1]东北大学,辽宁沈阳110004

出　　处：《冶金标准化与质量》2007年第6期6-9,共4页Metallurgical Standardization & Quality

摘　　要：在水模型实验的指导下,依照佐野先生提出的高效的镁精炼铁水计划进行实验。本文采用电导率法测定溶池的均混时间,考察喷镁脱硫钢包内钢液的一些主要工艺和结构参数对均混时间的影响,通过比较均混时间来衡量气泡的微细化程度;通过水模型实验,讨论钢包喷吹镁粉脱硫精炼过程中,不同的搅拌桨结构、搅拌模式、搅拌速度、气体流量、搅拌桨的潜入深度和喷嘴结构等一系列因素对均混时间的影响,分别做了单机械搅拌,单吹气搅拌和机械搅拌加上吹气搅拌的铁水包水模型实验。对实验结果进行对比分析,把上述不同参数条件下的均混时间列出表格,绘出曲线,进行了以铁水包脱硫效率为最终考察目标的铁水包单吹镁脱硫的工艺优化研究,得到最佳的优化参数,并把这些参数运用到实验中,来研究讨论气泡微细化的程度,指导本水模型实验。通过水模型实验,最终确定130t钢包的最佳工艺优化参数。An deeply systematic research were carried out under the guidance of water model experiment and the plan put forward by Mr. Sano to improve the Mg desulfurization efficiency. Ultimately determine the best technical parameters and experimental program, In the water model described in this paper, KCL was added in to act as tracer. Uniform mixing time was determined by testing the conductivity change under the condition of different operative parameters in the process. The degree of micro-bubble is depended on the mixed time. By the water model experiment, we change the conditions as follow： the structure of stirring oar, the model of stirring, rotation speed, gas flow rate, insert depth and the structure of nozzle. Then we analysis and compare the results, draw the file and the curve. For the goal of desulfurated efficiency, we get the best processing parameter. Finally we find the best processing parameter of 130t ladle, based on the previous experimental result.

关 键 词：脱硫 水模型 均混时间 

分 类 号：TF769[冶金工程—钢铁冶金]