Molten steel yield optimization of a converter based on constructal theory  

作　　者：CHEN LinGen LIU Xiong FENG HuiJun GE YanLin XIE ZhiHui 

机构地区：[1]Institute of Thermal Science and Power Engineering, Naval University of Engineering [2]Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering [3]College of Power Engineering, Naval University of Engineering

出　　处：《Science China(Technological Sciences)》2018年第4期496-505,共10页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51506220&51579244);the National Key Basic Research and Development Program of China(Grant No.2012CB720405)

摘　　要：Constructal theory is introduced into the molten steel yield maximization of a converter in this paper. For the specific total cost of materials, generalized constructal optimization of a converter steel-making process is performed. The optimal cost distribution of materials is obtained, and is also called as "generalized optimal construct". The effects of the hot metal composition contents, hot metal temperature, slag basicity and ratio of the waste steel price to the sinter ore price on the optimization results are analyzed.The results show that the molten steel yield after optimization is increased by 5.48% compared with that before optimization when sinter ore and waste steel are taken as the coolants, and the molten steel yield is increased by 6.84% when only the sinter ore is taken as the coolant. It means that taking sinter ore as coolant can improve the economic performance of the converter steelmaking process. Decreasing the contents of the silicon, phosphorus and manganese in the hot metal can increase the molten steel yield. The change of slag basicity affects the molten steel yield a little.

关 键 词：converter molten steel yield charge composition constructal theory generalized thermodynamic optimization 

分 类 号：TF713[冶金工程—钢铁冶金]