生物质用于氢气还原磁铁矿的效果研究  

Study on the effect of biomass used for hydrogen reduction of magnetite

作　　者：张帅 艾立群 洪陆阔 佟帅 陈建松 周美洁 Zhang Shuai;Ai Liqun;Hong Lukuo;Tong Shuai;Chen Jiansong;Zhou Meijie(North China University of Science and Technology)

机构地区：[1]华北理工大学冶金与能源学院

出　　处：《冶金能源》2024年第6期14-19,共6页Energy For Metallurgical Industry

基　　金：中央引导地方科技发展资金项目(236Z1006G);河北省研究生创新资助项目(CXZZBS2024134);河北省高等学校科学技术研究项目(ZD2022125);唐山市人才资助项目(A20220212)。

摘　　要：针对高温下氢气还原磁铁矿粉矿还原产物易烧结、球团矿制备直接还原铁效率低的现象,提出在磁铁矿中配加适量生物质。在粉矿及压矿中分别配加生物质,并与无生物质添加的磁铁矿开展氢气还原对比实验。研究结果表明:随着碳铁摩尔比增加,粉矿还原产物金属化率先急剧提高,后缓慢提高再下降,当碳铁摩尔比为0.08时,还原产物金属化率比无生物质添加时提高接近11个百分点,且生物质的添加有利于改变反应过程的限制性环节,减轻在高温条件下烧结过程的加速现象;随着碳铁摩尔比增加,压矿还原产物金属化率先快速提高后缓慢提高。In view of the phenomenon that the reduction products of magnetite powder reduced by hydrogen at high temperature are easy to sinter and the efficiency of producing direct reduced iron from pellets is low,an appropriate amount of biomass is proposed to be added to magnetite.Biomass was added to the powder ore and pressed ore respectively,and the hydrogen reduction test was carried out with magnetite without biomass addition.The results show that with the increase of the carbon to iron molar ratio,the metallization of the reduction products of fine ore first increases sharply,and then slowly increases and then decreases.When the carbon to iron molar ratio is 0.08,the metallization rate of the reduction products is nearly 11 percentage points higher than that without biomass addition,and the addition of biomass is conducive to changing the limiting link of the reaction process and slowing down the acceleration of the sintering process at high temperature.With the increase of carbon to iron molar ratio,the metallization of ore reduction products increases rapidly first and then slowly.

关 键 词：生物质 氢气还原 气体通道 金属化率 限制性环节 

分 类 号：TF55[冶金工程—钢铁冶金] TK6[动力工程及工程热物理—生物能]