Effective Use of Hydrogen in Gaseous Reduction of Iron Ore Agglomerates With H2-CO

摘要：

Effective use of hydrogen in ironmaking is one of the important measures to reduce CO2 emission in steal works. The following four fundamental works carried out by the present authors are introduced here to discuss the CO2 reduction in the ironmaking fields: (1) Effect of water-gas shift reaction on reduction of iron oxide powder packed bed with H2-CO mixtures; (2) Fundamental experiments on the H2 gas injection into the lower part of a blast furnace shaft; (3) Pre-reduction of iron oxide by coal carbonization gas for total iron bath smelting reduction process; (4) Effect of residual volatile matter, especially H2, in char on reduction of iron oxide in carbon composite pellets. In addition, (5) Effect of hydrogen injection into the blast furnace on its operation conditions is also evaluated and discussed by the mass and heat balance model, which shows hydrogen injection causes both decrements of carbon consumption and heat supply.

关键词： ironmaking blast furnace iron ore agglomerates carbon composite pellets hydrogen reduction smelting reduction pre-reduction coal carbonization gas

作者: Usui Tateo Nishimura Tsunehisa Ono (-Nakazato) Hideki Konishi Hirokazu Kawabata Hirotoshi

作者单位: Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan

会议类型: 国际会议

会议名称: The 5th International Congress on the Science and Technology of Ironmaking(第五届国际炼铁科技大会 ICSTI09)

会议地点: 上海

会议语种:英文

页码: 1183-1188

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）