摘要
寻找替代能源是减少钢铁工业CO_(2)排放的重要方式,而生物质能是CO_(2)零排放的可替代能源。本文在阐述生物质燃料在炼铁工艺中应用的基础上,重点叙述了其在铁矿球团方面上的应用,并就其还原原理以及目前的研究现状进行了概述。结论表明:天然生物质、生物炭、木质素对铁矿都具有较好的还原性,其中木质素的还原性最强,其还原能力高于煤粉与CO;生物质中提取的纤维素可通过改性制备成球团黏结剂或者黏结相,可用于提高生物质铁矿球团的自身强度。最后,文中指出天然生物质铁矿球团、生物炭铁矿球团、生物质中间体铁矿球团是生物质铁矿球团未来发展的3个方向,开发高强度高反应性生物质铁矿球团是未来发展的重要趋势。
Whereas,the search for alternative energy sources is an important way to reduce CO_(2) emissions in the iron and steel industry,and biomass energy is an alternative energy source with CO_(2) zero-emissions.On the basis of expounding the application of biomass fuel in iron-making process,its application in terms of iron ore pellets is highlighted and its reduction principles and current research are outlined.The conclusion shows that:natural biomass,biochar,and lignin all have a good reducibility to iron ore,among them,lignin has the strongest reducibility,and its reducing capacity is higher than that of pulverized coal and CO;the cellulose extracted from biomass can be modified into a pellet binder or a binder phase,which can be used to improve the strength of biomass iron ore pellets.At last,natural biomass iron ore pellets,biochar iron ore pellets and biomass intermediate iron ore pellets are pointed out to be the three directions of the future development direction of biomass iron ore pellets,and the development of high-strength and high-reactivity biomass iron ore pellets is taken as an important trend of future development.
作者
魏汝飞
朱玉龙
龙红明
徐春保
WEI Rufei;ZHU Yulong;LONG Hongming;XU Chunbao(School of Metallurgical Engineering,Anhui University of Technology,Ma'anshan 243002,Anhui,China;Key Laboratory of Metallurgical Emission Reduction&Resources Recycling,Ministry of Education,Ma'anshan 243002,Anhui,China;Institute for Chemicals and Fuels from Alternative Resources(ICFAR),The University of Western Ontario,London N6A3K7,Ontario,Canada)
出处
《烧结球团》
北大核心
2022年第1期29-37,共9页
Sintering and Pelletizing
基金
国家自然科学基金资助项目(52174290)。
关键词
生物质
球团
低碳炼铁
还原
生物炭
生物质中间体
biomass
pellet
low carbon iron-making
reduction
biochar
biomass intermediate
