Hydraulics and Mathematics Simulation on the Weir and Gas Curtain in Tundish of Ultrathick Slab Continuous Casting
Hydraulics and Mathematics Simulation on the Weir and Gas Curtain in Tundish of Ultrathick Slab Continuous Casting
复制标题
超厚板坯连铸中间包堰及气幕水力学及数学模拟
DOI：
10.1007/s11663-013-9941-6
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发表时间：
2014-04-01
影响因子：
3
通讯作者：
Liao, Qi
中科院分区：
文献类型：
--
作者：
Chen, Dengfu;Xie, Xin;Liao, Qi
如果合理使用流量控制装置，可以改善连铸中间包内的钢水流动形态。堰和气幕的合理应用，减少了中间包注入区的扰动。改变钢水流路，消除短路流。因此，停留时间延长。带有漂浮气泡的气幕可以促进表面流动并改善夹杂物的去除。通过水力学和数学模拟研究了堰和气幕在超厚板坯连铸中间包中的应用。通过流量控制装置不同位置的正交实验研究了停留时间和死体积分数。分析了三个因素的效率，得出堰和风幕的最佳位置。此外，离散相模型适合模拟气泡与钢水的相互作用，数学结果表明，最佳模型可以获得较大的夹杂物浮选率。 (C) 矿物、金属和材料协会和 ASM International 2013
The molten steel flow pattern in continuous casting tundish could be improved if the flow control devices were properly used. With reasonable application of weir and air curtain, the disturbance at injection zone of the tundish was reduced. The flow path of the molten steel was changed, and the short-circuit flow was eliminated. Therefore, the residence time was lengthened. An air curtain with bubbles floating could promote the surface flow and improve inclusions removal. The application of weir and air curtain in an ultrathick slab continuous casting tundish was investigated with hydraulics and mathematics simulation. The residence time and dead volume fraction were studied through orthogonal experiments with different positions of the flow control devices. The efficiency of three factors was analyzed, and the optimum positions of the weir and air curtain were obtained. Besides, the discrete phase model was suitable for simulation of the interaction between gas bubbles and molten steel, and the mathematics results shown the optimum one got larger inclusion flotation rate. (C) The Minerals, Metals & Materials Society and ASM International 2013