中国科学院过程工程研究所，北京 100190
收稿日期:2018-09-04修回日期:2018-09-26出版日期:2018-12-22发布日期:2018-12-19通讯作者:朱庆山基金资助:国家自然科学基金资助项目;国家自然科学基金资助项目The technical state and development trend of the direct reduction of titanomagnetite by fluidized bed
Haoyan SUN, Qingshan ZHU*, Hongzhong LIInstitute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Received:2018-09-04Revised:2018-09-26Online:2018-12-22Published:2018-12-19Contact:ZHU Qing-shan 摘要/Abstract
摘要： 钒、钛是重要的生产生活资料，90%以上赋存于钒钛磁铁矿中. 我国钒钛磁铁矿资源储量丰富，但在当前高炉?转炉工业流程中，受高炉冶炼条件限制，钒钛磁铁精矿中的钛元素未能得到回收利用. 面对钒钛磁铁精矿铁钒钛资源全面提取利用难题和资源环保集约综合利用的迫切需求，直接还原?电炉熔分两步法流程受到广泛关注，其中流化床法因直接采用粉矿入炉、工序流程短、低温综合反应效率高，在直接还原工序中优势突出. 本工作阐述并对比了钒钛磁铁精矿流化床直接还原工艺，分析了钒钛磁铁精矿难还原的原因，重点介绍了流态化预氧化强化还原方法，同时归纳流化床直接还原过程中影响粘结失流的主要因素，总结了5种抑制铁矿粉粘结失流的直接方法，并提出了添加MgO惰性添加剂、碳包覆及改进床型结构的研究发展方向.
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孙昊延 朱庆山 李洪钟. 钒钛磁铁矿流态化直接还原技术现状与发展趋势[J]. 过程工程学报, 2018, 18(6): 1145-1159.
Haoyan SUN Qingshan ZHU Hongzhong LI. The technical state and development trend of the direct reduction of titanomagnetite by fluidized bed[J]. Chin. J. Process Eng., 2018, 18(6): 1145-1159.
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