Analysis on the Oversize Blast Furnace Desulfurization and a Sulfide Capacity Prediction Model Based on Congregated Electron Phase

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• 作者：Wang Zhenyang ; Zhang Jianliang ; An Gang…
• 刊名：Metallurgical and Materials Transactions B
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：47
• 期：1
• 页码：127-134
• 全文大小：1,491 KB
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• 作者单位：Wang Zhenyang (1)
  Zhang Jianliang (1)
  An Gang (2)
  Liu Zhengjian (1)
  Cheng Zhengming (2)
  Huang Junjie (2)
  Zhang Jingwei (1)
  
  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Metallurgy Building, 517 Room, 30 Xueyuan Road, Haidian District, Beijing, 100083, China
  2. Ironmaking Plant, Shougang Jingtang United Iron & Steel Co. Ltd., Caofeidian, 063200, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Manufacturing, Machines and Tools
  Metallic Materials
  Operating Procedures and Materials Treatment
  Characterization and Evaluation Materials
  Numerical and Computational Methods in Engineering
  
• 出版者：Springer Boston
• ISSN：1543-1916

文摘

Through analyzed and regressed the actual productive desulfurization data from the oversize blast furnace (5500 m3) in north China, the relationship between the sulfur distribution parameters and the slag composition in actual production situation was investigated. As the slag and hot metal phases have their own balance sulfur content or sulfur partial pressure in gas phase, respectively, the non-equilibrium of sulfur among gas, slag, and metal phases leads to the transmission and distribution of sulfur. Combined with sulfur transmission reactions between gas, slag and metal phases, C/CO pairs equilibrium, and Wagner model, the measured sulfide capacity can be acquired using sulfur distribution ratio, sulfur activity coefficient, and oxygen activity in hot metal. Based on the theory of congregated electron phase, a new sulfide capacity prediction model (CEPM) has been developed, which has a good liner relationship with the measured sulfide capacity. Thus, using the burden structure for BF, the ironmaking slag composition can be obtained simply and can be used to reliably predict the ironmaking slag desulfurization ability a few hours later after charging under a certain temperature by CEPM. Manuscript submitted June 14, 2015.