Coordinated control of decarbonization efficiency and oxygen absorption rate in Ruhrstahl–Heraeus degasser based on mechanism model and BP neural network  

作　　者：Lu-heng Jiang Min Wang Jia-qi Zhao Cheng Yao Li-dong Xing Xin-gang Ai 

机构地区：[1]State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing,100083,China [2]Technical Support Centre for Prevention and Control of Disastrous Accidents in Metal Smelting,University of Science and Technology Beijing,Beijing,100083,China [3]Institute of Research of Iron&Steel,Zhangjiagang,215600,Jiangsu,China [4]School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan,114051,Liaoning,China

出　　处：《Journal of Iron and Steel Research International》2025年第3期606-618,共13页钢铁研究学报(英文版)

基　　金：supported by the Central Government Guides Local Science and Technology Development Foundation(No.2023JH6/100100046);the Project funded by China Postdoctoral Science Foundation(No.2023M730230).

摘　　要：A mathematical model of the decarburization reaction zone was established for the Ruhrstahl–Heraeus (RH) forced oxygen blowing decarburization process by Matlab R2022b software. For the problem of inaccurate prediction due to the large variation range of oxygen absorption rate under different process conditions, we statistically analyzed the main factors affecting the oxygen absorption rate. The backpropagation neural network was used to train and predict the oxygen absorption rate and was used to calculate the RH decarburization reaction zone model. We designed and developed a mathematical modeling software with process control of decarburization in RH degasser, which can realize the change of operating process parameters in the dynamic prediction process. The optimized mathematical model has more than 95% of the furnaces whose absolute error in calculation of carbon content is within ± 5 × 10^(−6), more than 90% of the heats whose relative error in calculation of oxygen content is within ± 15%, and the average absolute error of calculation of oxygen content is 26.4 × 10−6. Finally, we studied the influence of oxygen blowing timing, oxygen blowing volume and initial oxygen content on the forced decarburization process.

关 键 词：Ruhrstahl-Heraeus degasser Mathematical model Forced decarburization Oxygen absorption rate Process control 

分 类 号：TF769.2[冶金工程—钢铁冶金]