铁矿石直接还原现状及提高质量的对策  

The Status and the Improving Quality Countermeasures of Fe Ore Direct Reduction Technology

作　　者：权芳民[1] 王明华[1] QUAN Fang-min;WANG Ming-hua(Steel Research Institute of Jiuquan Iron&Steel(Group)Co.Ltd.,Jiayuguan 735100,China)

机构地区：[1]酒泉钢铁(集团)有限责任公司钢研院,甘肃嘉峪关735100

出　　处：《甘肃冶金》2021年第1期30-34,共5页Gansu Metallurgy

摘　　要：通过对国内外煤基直接还原铁生产现状研究及存在问题的分析,依据传统经典铁矿石还原理论,在铁矿石碳气化直接还原技术的基础上,提出了铁矿石碳循环增氧还原技术,并通过隧道窑和回转窑两种还原设备进行试验验证。铁矿石煤基还原试验结果表明,该技术不仅可缩短铁矿石的还原时间,而且可提高还原产品的金属化率、降低生产能耗和碳的排放,对促进我国直接还原铁技术的发展具有重要意义。Based on the analysis of the present situation and existing problems of coal-based direct reduction iron production at home and abroad,and the traditional classical iron ore reduction theory,and the iron ore direct reduction technology of carbon gasification,the paper puts forward the technology of carbon cycling oxygen-increasing reduction of iron ore.The test verification is carried out by two kinds of reduction equipment,tunnel kiln and rotary kiln.The test results of coal-based reduction show that the technology can not only shorten the reduction time of iron ore,but also improve the metallization rate of reduction products,reduce production energy consumption and carbon emissions.It is of great significance to promote the development of direct reduction iron technology in China.

关 键 词：钢铁 直接还原 技术现状 提高质量 

分 类 号：TF55[冶金工程—钢铁冶金]