Physical study of the impact of injector design on mixing, convection and turbulence in ladle metallurgy
Physical study of the impact of injector design on mixing, convection and turbulence in ladle metallurgy
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DOI：
10.1016/j.jestch.2018.11.010
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发表时间：
2019-04-01
影响因子：
5.7
通讯作者：
Pfeifer, Herbert
中科院分区：
文献类型：
--
作者：
Gajjar, Prince;Haas, Tim;Pfeifer, Herbert
混炼时间是衡量钢包冶炼均质化效率的常用指标。本研究以185t工业气体搅拌钢包为研究对象，采用1：3的水模型，在压力为2bar、充填高度为1.076 m的恒定流量下研究了不同喷嘴设计对混合的影响，并用连续进样法测量了混合时间，并用粒子图像测速仪将测量结果与总体对流和湍动能进行了关联。结果表明，所有受试喷嘴的混合时间相似，相对偏差为6.4%。因此，喷嘴的设计在钢包冶金优化中起着次要的作用。(C)2018年卡拉布克大学。Elsevier B.V.出版服务。
Mixing time is a common measure to evaluate the efficiency of homogenization in ladle metallurgy. In this study, a 1:3 scale water model of a 185 t industrial gas-stirred ladle with an eccentric porous plug at the bottom is used to study the impact of different injector designs on mixing at a constant flow rate of 16.7 slm (standard liter per minute) at the pressure of 2 bar and filling height of 1.076 m. For that, the mixing time is measured with a continuous food color injection, accompanied by Particle Image Velocimetry (PIV) to correlate the results with the bulk convection and the turbulent kinetic energy. The results show that all tested injectors yield similar mixing times with a relative deviation of 6.4%. It is therefore concluded that the injector design plays a minor role in the optimization of ladle metallurgy. (C) 2018 Karabuk University. Publishing services by Elsevier B.V.