相似原理在冷态模拟粒化钢渣中的应用  

Application of Similarity Principle to Cold Simulation of Granulation of Steel Slag

作　　者：张玉柱[1] 龙跃[1,2] 王少宁[2] 邢宏伟[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]河北理工大学冶金与能源学院,河北唐山063009

出　　处：《东北大学学报（自然科学版）》2010年第2期207-209,共3页Journal of Northeastern University(Natural Science)

基　　金：国家重点基础研究发展规划项目(2008CB617602);国家科技支撑计划项目(2008BAE67B00)

摘　　要：在实验室用石蜡冷态模拟液态钢渣进行气淬粒化试验,讨论了气体压强、气流速度、气体流量及液态钢渣渣流落下距离对粒化效果的影响.结果表明,粒化后石蜡的粒度分布与气体的压强、流量和气流速度成反比.应用相似原理和量纲分析得到相应的准数,通过气淬石蜡的结果和计算得出,当气体的压强p=0.56MPa,气流速度v=93.33 m/s,液态钢渣流的落下距离l=18.7 cm,气体的流量Q=338 m3/h时被粒化的液态钢渣的粒度比较均匀,且都在3 mm以下.以上参数能够对现场粒化液态钢渣起到实际的指导作用.With the molten paraffin applied to simulating the cold air quenching for the granulation of liquid steel slag in lab, the effects of gas pressure, airflow velocity, gas flowrates and liquid steel slag flow and its vertical falling distance on the granulation were investigated. The results showed that after the granulation the distribution of paraffin grain size is in inverse proportion to the gas pressure/flowrates and airflow velocity. Based on the similarity principle and dimensional analysis, the criterion was given correspondingly. Then the air quenched paraffin and granulation was calculated and the results revealed that the grain size of granulated steel slag is relatively even and all grain sizes are less than 3mm if the gas pressure p = 0.56 MPa, airflow velocity v = 93.33 m/s, vertical falling distance 1 = 18.7 cm, and gas flowrate Q = 338 m^3/h. The parameters as above are available to the in-situ granulation of liquid steel slag for reference.

关 键 词：钢渣 粒化 相似定理 气淬 量纲分析 

分 类 号：TG142.45[一般工业技术—材料科学与工程]