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| Optimization of Slag System in Decarburization Converter of Duplex Process With Low Silicon Semi-Steel Smelting |
| LIN Teng-chang1,ZHU Rong1,LU Zhi-fang1,FANG Yu-rong2,WANG Cheng-jie1 |
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. Steelmaking Plant, Minguang Co.， Ltd., Fujian Sansteel, Sanming 365000, Fujian, China |
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Abstract In order to decrease stick lance and reduce the end phosphorus content, the slag system of 120t duplex process decarburization converter was studied by using chemical analysis, melting experiment and Factsage thermodynamic numerical simulation. The effect of slag system on smooth smelting was expounded, and a basic principle and final slag composition of new slag system was established. After the industrial application of new slag system, the phenomenon of stick lance remits to a certain extent. The slag ratio can reduce to 34.7kg/t of decarburization converter, and the end phosphorus content is about 0.006%-0.012%.
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Received: 20 September 2012
Published: 28 May 2013
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2013, Vol. 48 
