Low RAR Operation Technology of Blast Furnace Aiming at Reducing CO<,2> Emission in Ironmaking Process
Global warming is a common subject in steel industry in every country. In the integrated steel works, there are various means to decrease reducing agent at blast furnace, however, preferable way to reduce CO <,2> emissions must be chosen considering energy balance in whole steel works. Regarding the above conditions, reduction of heat loss from the lower part of the blast furnace and metallic charging are of the most effective way in the integrated steel works. This paper describes the recent technologies for the reduction of RAR developed at JFE Steel; i. e. the precise gas flow control technologies to lower the heat loss from the shaft, and the production technologies of raw materials containing metallic iron using sintering machine, rotary hearth furnace and shaft furnace.
CO<,2> emission blast furnace reducing agent rate burden distribution pre-reduced sintered ore carbon iron composite new ironmaking process
Michitaka Sato Takeshi Sato Takashi Anyashiki Kanji Takeda Tatsuro Ariyama
Ironmaking & Environmental Process Research Dept., Steel Research Laboratory, JFE Steel Corporation, Formerly JFE Steel Corp.; now at Institute of Multidisciplinary Research for Advanced Material; Toho
国际会议
第十一届中日钢铁技术研讨会(11th China-Japan Symposium on Oron and Steel Technology)
武汉
英文
18-22
2007-10-29（万方平台首次上网日期，不代表论文的发表时间）