日本钢铁业研究的减排CO_2炼铁新技术

NEW IRONMAKING TECHNOLOGY OF REDUCING CO_2 OF JAPANESE STEEL INDUSTRY

日本钢铁业在减排CO2的炼铁技术开发中,近期主要以开发新型炉料为主,新型炉料包括高反应性焦炭、铁焦复合球团、预还原烧结矿等;长期主要以氢气还原铁矿石的高炉炼铁技术为主,还包括与氢还原相配套的新型焦炭技术等。本文介绍了高反应性焦炭、铁焦复合球团和预还原烧结矿对高炉降低还原剂比的作用及其在高炉中的用法,阐述了氢气还原铁矿石的高炉炼铁技术及与之相配套的新型焦炭技术的研究进展,指出我们应借鉴其高反应性焦炭概念、在矿焦混装时使用高反应性焦炭,以及应着手开发类似HPC的粘结剂技术。

New furnace burden technology development is being focused on for reducing CO2 emission in Japan Iron and Steel industry in the coming few years.New burden includes high reactivity coke,carbon iron composite and pre-reduced sinter,etc.In the long run,reduction of iron ore by Hydrogen supported with new coke technology development is being concentrated on.The application and role of reducing blast furnace RAR of high reactivity,carbon iron composite and new coke are introduced.Development of reduction of iron ore by Hydrogen and new coke technology are presented.High reactivity coke,carbon iron composite and HPC technology are compared and analyzed.It is pointed that the concept of high reactivity coke,applying high reactivity coke in coke mixing technology should be used for reference,and the technologies like HPC additives should be researched in our country.