Physical Modeling Evaluation on Refining Effects of Ladle with Different Purging Plug Designs
Physical Modeling Evaluation on Refining Effects of Ladle with Different Purging Plug Designs
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DOI：
10.1002/srin.201900606
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发表时间：
2020-06-01
影响因子：
2.2
通讯作者：
Li, Baokuan
中科院分区：
文献类型：
--
作者：
Tan, Fangguan;He, Zhu;Li, Baokuan
在排气塞上引入圆形缝隙，以缓解应力集中，延长其使用寿命。采用水模型方法研究了不同几何形状的狭缝对混合时间、夹杂物去除率和渣眼面积的影响。实验结果表明，当气体流量小于6.02NL min（-1）时，夹杂物去除率随狭缝角度的增大而减小。当气体流量小于5.26 NL min（-1）时，随着狭缝直径的增大，混合时间和夹杂物去除率均减小。渣眼面积随切缝直径的增大而增大，切缝角度对渣眼的形成有积极影响。最后，以减少搅拌能耗和卷渣量为目标，对搅拌时间和夹杂物去除率进行优化，结果表明，渣眼面积越小，精炼效果越好。
Circular slits are introduced in purging plugs for alleviating the stress concentration to prolong their service life. Herein, the effects of slits with different geometries on the mixing time, inclusion removal rate, and slag eye area are studied by water model method. Experimental results show that the inclusion removal rate decreases with increasing slit angle for the gas flow rate of less than 6.02 NL min(-1). Moreover, with slit diameter increases, the mixing time and inclusion removal rate decrease when a gas flow rate is less than 5.26 NL min(-1). The slag eye area increases with increasing slit diameter, and the slit angle has a positive influence on the formation of the slag eye. Finally, the optimization of the mixing time and inclusion removal rate for less consumption of stirring energy and less slag entrapment indicates that the smaller the slag eye area is, the better the refining effect is.