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| Study on Optimization of Mold Powder for Medium Carbon Steel Slab Casting and Plant Trial With Optimized Flux for Increasing Casting Speed |
| ZHAO Zifeng1,WANG Xinhua1,ZHANG Jiongming1,MEI Feng2,KANG Jianguo2 |
| 1.School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083， China；2.Technical Center， Baoshan Iron and Steel Co.， Ltd.， Shanghai 201900， China |
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Abstract By increasing basicity and contents of CaF2 and Li2O, the mold flux for medium carbon steel slab casting was optimized.The optimized flux was adopted in plant trial of increasing castingspeed.The results showed that optimized flux has higher crystallization temperature，lower viscosity and melting point.In plant trial，liquid optimized flux thickness increased by 2 mm approximately，slag consumption increased by 0.03 kg/m2.At a casting speed of 13 m/min，heattransfer intensity，stability and slab quality cast with traditional flux were almost the same as cast with optimized flux at a casting speed of 15 m/min.
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Received: 01 January 1900
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2009, Vol. 44 
