·68· 北京科技大学学报 2007年增刊1 Application and practice of TPC technology in the production of 50 t EAF WANG Guanglian2,LIU Jianhui,SHEN Jjingxia.SUN Yongxi) 1)Metallurgical and Ecological Engineering School,University of Science and Technology Beijing,Beijing 100083,China 2)The Special Steel Plant of Laiwu Iron and Steel Co.Ltd.,Laiwu 271105,China ABSTRACT The application condition of TPC(Terminal Process Control)technology in the operation of 50 t EAF were introduced.Through adoption of TPC problems such as steel sticking with water cooled furnace cover were solved,and the hit ratio of predicting both of terminal composition and temperature of the steel increased from 67%to 91%.Additionally,several indicators were greatly improved,for example,the time of electricity supply was shortened by 6 min/furnace,electric consumption was reduced by 58 kW-ht,and electrode con- sumption was reduced by 0.30 kW-ht1. KEY WORDS EAF steelmaking:terminal process control:process• 68 • 北 京 科 技 大 学 学 报 2007 年 增刊 1 Application and practice of TPC technology in the production of 50 t EAF WANG Guanglian1,2） , LIU Jianhui1） , SHEN Jjingxia1,2） , SUN Yongxi2) 1） Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China 2） The Special Steel Plant of Laiwu Iron and Steel Co. Ltd.，Laiwu 271105, China ABSTRACT The application condition of TPC (Terminal Process Control) technology in the operation of 50 t EAF were introduced. Through adoption of TPC problems such as steel sticking with water cooled furnace cover were solved, and the hit ratio of predicting both of terminal composition and temperature of the steel increased from 67% to 91%. Additionally, several indicators were greatly improved, for example, the time of electricity supply was shortened by 6 min/furnace, electric consumption was reduced by 58 kW·h·t−1 , and electrode con￾sumption was reduced by 0.30 kW·h·t−1 . KEY WORDS EAF steelmaking；terminal process control；process