Series No．464February一2015一一一一一一一一一一一一一一一金一一属一一矿一一山METAL MINE 一一一一一一一一一一一一一一一总第464期2015年第2期
收稿日期一2014-11-25
基金项目一国家自然科学基金委员会项目(编号:51134002), 十二五 国家科技支撑计划项目(编号:2012BAB14B02),中央高校基本科研业务费
专项基金项目(编号:N120601004)三
作者简介一韩跃新(1961 ),男,教授,博士研究生导师三
四专题综述四
我国铁矿选矿技术最新进展
韩跃新一孙永升一李艳军一高一鹏
(东北大学资源与土木工程学院,辽宁沈阳110819)
摘一要一介绍了我国铁矿资源的分布及特点,总结了近5a 我国铁矿选矿技术领域的研究进展,着重评述了微细
粒铁矿分选二破碎磨矿二磁化焙烧二深度还原二铁尾矿再选二常温捕收剂研发等方面形成的铁矿选矿新技术及新成果三磁重浮联合分选工艺可以实现微细粒铁矿和铁尾矿的高效分选;与常规碎磨技术相比,高压辊磨二自磨/半自磨和搅拌磨技术可以降低矿石碎磨过程中的能耗;磁化焙烧新技术(闪速焙烧二流化床焙烧和悬浮焙烧)与深度还原技术为难以利用的铁矿资源开辟了新途径;新型常温铁矿捕收剂的应用可以降低浮选作业温度,显著降低能耗三指出了未来我国铁矿选矿技术的主要发展方向为微细粒铁矿强化分离基础性课题的研究,高效碎磨设备及新型矿石预处理设备的研制与应用,绿色环保选矿工艺及药剂的研发三
关键词一微细粒铁矿石选矿一碎磨技术一磁化焙烧一深度还原一铁尾矿再选一常温浮选
一一中图分类号一TD951一一一文献标志码一A一一一文章编号一1001-1250(2015)-02-001-11New Development on Mineral Processing Technology of Iron Ore Resources in China
Han Yuexin一Sun Yongsheng一Li Yanjun一Gao Peng
(College of Resources and Civil Engineering ,Northeastern University ,Shenyang 110819,China )Abstract 一The distribution and characteristics of iron ore resources in China was described and research progress in iron ore beneficiation was summarized.The new technology and achievements,which formed in the aspect of microgranular iron ore separation,comminution,magnetizing roasting,coal-based reduction,iron tailing separation and room temperature collector,were reviewed in detail.The microgranular iron ore and iron tailing can be separated through the process containing magnetic separa-tion,gravity separation and flotation.The energy consumption in the ore crushing and grinding was significantly reduced using high-pressure grinding roller,AG /SAG mill and stirred mill.Magnetizing roast(i.e.,flash magnetizing roasting,fluidized bed magnetizing roasting and suspension roasting)and coal-based reduction provide a new way for utilization of refractory iron ore.The flotation temperature was effectively decreased by room temperature collector.The development tendencies in mineral pro-cessing of iron ore are investigation of scientific problems in microgranular iron ore separation,development and application of efficient comminution equipment and new pretreatment equipment,research on environment protecting beneficiation process and reagent.Keywords 一Iron ore,Microgranular iron ore,Comminution technology,Magnetizing roasting,Deep reduction,Reconcen-tration on iron tailings,Room temperature flotation 一一钢铁作为一种重要的金属材料,广泛应用于建
筑二机械二汽车二铁路二造船二轻工和家电等行业三钢铁工业是国民经济的基础产业,其发展水平是一个国家
综合实力的重要标志[1]三近年来,国民经济的持续快速发展促进了我国钢铁行业的迅猛发展,并由此使我国对铁矿石的需求量大幅增加[2]三我国铁矿资源总量丰富,但由于优质铁矿资源匮乏二复杂难选铁矿
石利用率低以及国内铁矿石生产企业产能不足,致使国内铁矿石产量远远无法满足钢铁企业的需求[3-4],多数大型钢铁企业不得不大量进口铁矿石三近5a 我国铁矿石产量和进口量如表1所示三由表1可知,我国铁矿石进口量逐年递增,2013
年增加至8.19亿t,铁矿石对外依存度连续5a 超过55%三据预测,未来几年我国铁矿石进口量仍将维持四1四