Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (4): 534-538.DOI: 10.12068/j.issn.1005-3026.2014.04.018

• Materials & Metallurgy • Previous Articles     Next Articles

Static Model for Converter Steelmaking with Limestone

TANG Biao1, WANG Xiaoming1, ZOU Zongshu1, YU Aibing1,2   

  1. 1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China; 2. School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia.
  • Received:2013-07-13 Revised:2013-07-13 Online:2014-04-15 Published:2013-11-22
  • Contact: ZOU Zongshu
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Abstract: Converter steelmaking with limestone instead of lime was studied. The theoretical feasibility of using limestone instead of lime was analyzed for converter steelmaking. A partition model for carbon dioxide reaction with[C],[Si],[Mn]and[Fe]was established on the basis of thermodynamic analysis. According to the mass and heat balance calculations, the materials consumptions under different limestone substitution proportions were obtained, and the maximum limestone substituting proportion was determined. The changes of converter gas composition and production and the cost of steelmaking were studied. The results showed that limestone can be used in converter steelmaking and the maximum substitution proportion is about 71%under the involved conditions. With the increase of limestone substitution, the scrap consumption, volume fraction of CO2 in furnace gas and the steelmaking cost decrease, while the hot metal consumption, volume fraction of CO in furnace gas and the quality of furnace gas increase.

Key words: converter steelmaking, limestone substitution proportion, mass and heat balances, carbon dioxide partition, static model

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