| 煤基直接还原—磁选超微细贫赤铁矿新工艺 |
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| 引用本文： | 朱德庆,翟勇,潘建,崔瑜,唐艳云,徐栋梁.煤基直接还原—磁选超微细贫赤铁矿新工艺[J].中南大学学报(自然科学版),2008,39(6). |
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| 作者姓名： | 朱德庆 翟勇 潘建 崔瑜 唐艳云 徐栋梁 |
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| 作者单位： | 中南大学,资源加工与生物工程学院,湖南,长沙,410083 |
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| 基金项目： | 国家教育部高等学校优秀青年教师教学科研奖励基金资助项目
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| 摘 要： | 针对某种超微细粒贫赤铁矿难选的特点，开发了煤基直接还原一磁选新工艺，制备出高品位铁精矿。采用预热团块煤基直接还原工艺制取高金属化率的直接还原团块，经磨矿一磁选，得到高品位高金属化率的铁精矿，从而为开发利用微细粒嵌布复杂低品位铁矿提供了理论依据。通过对还原温度、还原时间及C与Fe质量比等条件的优化，得到金属化率93．72％的还原矿，经三段磨矿一三段磁选得到Fe似为69．54％，金属化率为98．01％，且有害杂质含量少的铁精矿。该工艺所得的高金属化率的铁精矿可直接作为转炉炼钢的原料。
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| 关 键 词： | 贫赤铁矿 煤基直接还原 磁选 |
Beneficiation of super microfine low-grade hematite ore by coal-based direct reduction-magnetic concentration process |
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| ZHU De-qing,ZHAI Yong,PAN Jian,CUI Yu,TANG Yang-yun,XU Dong-liang.Beneficiation of super microfine low-grade hematite ore by coal-based direct reduction-magnetic concentration process[J].Journal of Central South University:Science and Technology,2008,39(6). |
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| Authors: | ZHU De-qing ZHAI Yong PAN Jian CUI Yu TANG Yang-yun XU Dong-liang |
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| Institution: | ZHU De-qing,ZHAI Yong,PAN Jian,CUI Yu,TANG Yang-yun,XU Dong-liang(School of Resources Processing , Bioengineering,Central South University,Changsha 410083,China) |
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| Abstract: | Coal-based direct reduction-magnetic concentration,a new process on up-grading of super microfine refractory hematite was developed.With adoption of the coal-based direct reduction and milling-magnetic separation,the concentrate with high grade and metallization degree was produced.This work provides a theory basis for utilization of low grade iron ore.Under the optimize conditions of reduction temperatures,duration and C/Fe mass ratio,the reduced ore with 93.72%metallization degree is produced.After three ... |
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| Keywords: | low grade hematite ore coal-based direct reduction magnetic separation |
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