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| Influence of Nozzle Clogging on the Behavior of Molten Steel in Slab Mold |
| WU Haofang1,CHEN Zhiping1,WEN Guanghua2,XU Hailun2 |
| 1. Technique Center of Shanghai Meishan Iron & Steel Co., Ltd., Nanjing 210039, Jiangsu, China; 2. College of Materials Science and Engineering of Chongqing University, Chongqing 400044, China |
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Abstract According to the results of onsite survey, effect of SEN with single port clogging on flow field, liquid slag and bubbles in mold was studied systematically by combining physical simulation and numerical simulation. Meanwhile, the trajectory of clogs with different volume in mold was investigated. The results show that nozzle with single port clogging would lead to asymmetric flow filed in both sides of mold. Comparing with the side of port clogging, the flow rate from the other side enhanced, which would reinforce the impact and enlarge the probability of slag entrapment. The amount of bubbles in the nonclogging side increased and the penetration of bubbles increased. In addition, after the clogs with different volume entering into the mold, the one with larger volume would easily float up to the free surface.
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Received: 01 January 1900
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2009, Vol. 44 
