145t RH真空精炼装置内钢液循环流动特性的水模型研究  

A Water Modeling Study on Circulation Flow Characteristics of Liquid in 145t RH Vacuum Refining Unit

作　　者：朴峰云[1] 郑淑国[1] 朱苗勇[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110819

出　　处：《特殊钢》2014年第1期1-3,共3页Special Steel

摘　　要：基于相似原理,建立几何相似比1:7水模型研究了145 t RH真空精炼装置内钢液循环流动行为,研究了提升气量(60~140 m^3/h)、浸渍管浸渍深度(400~600 mm)、真空室液面高度(426~526 mm)对钢水循环流量和混匀时间的影响。结果表明,循环流量随提升气量增加而增大且呈近似线性关系,混匀时间随提升气量增加而呈非线性减小;500 mm的浸渍管浸渍深度和526 mm的真空室液面高度下均出现较理想的循环流量;130 m^3/h提升气量、600 mm浸渍管浸渍深度和526 mm真空室液面高度可获得最佳循环流动特性。Based on similarity principle, a water model with geometrical-similar ratio 1 ： 7 is established to study cir- culation flow behavior of liquid in 145 t RH vacuum refining unit. The effect of lifting gas flow-rate （60 ~ 140 m3/h） , in- serting depth of snorkel （400 -600 mm） and liquid height in vacuum chamber （426 -526 mm） on circulation flow rate and mixing time of liquid is researched. Results show that with increasing lifting gas flow-rate the circulation flow rate in- creases in approximate linear relation while the mixing time of liquid decreases in non-linear relation ; the more ideal circu- lation flow rate of liquid is occurred with inserting depth of snorkel 500 mm and liquid height in vacuum chamber 526 mm; with 130 ma/h lifting gas flow-rate, 600 mm inserting depth of snorkel and 526 mm liquid height in vacuum chamber the optimum liquid circulation flow characteristics are obtained.

关 键 词：145 t RH真空精炼装置 循环流动 混匀特性 水模型 

分 类 号：TF769[冶金工程—钢铁冶金]