| 宣龙式铁矿焙烧还原-磁选工艺及其影响因素 |
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| 引用本文： | 李克庆, 王立宁, 倪文, 朱明, 刘保顺. 宣龙式铁矿焙烧还原-磁选工艺及其影响因素[J]. 工程科学学报, 2011, 33(2): 153-156. DOI: 10.13374/j.issn1001-053x.2011.02.003 |
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| 作者姓名： | 李克庆 王立宁 倪文 朱明 刘保顺 |
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| 作者单位： | 1.北京科技大学金属矿山高效开采与安全教育部重点实验室, 北京 100083 |
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| 摘 要： | 基于煤基焙烧还原-磁选工艺,进行了宣龙式难选鲕状赤铁矿石提铁过程及其影响因素的实验研究.以铁精矿品位和铁回收率为评价指标,确定了适合于该类矿石的最佳工艺条件:焙烧还原温度为1 200℃,还原剂用量为30%,焙烧还原时间为60min,焙烧产物磁选前的磨矿细度为-45μm占96.19%,磁选的磁场强度为111kA·m-1.在该工艺条件下,可以使铁精矿品位达到92.53%,铁回收率达到90.78%.
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| 关 键 词： | 铁矿石 选矿 赤铁矿 焙烧 还原 磁选 |
| 收稿时间： | 2010-04-11 |
Roasting reduction-magnetic separation technology of Xuaniong-type iron ore and its relevant influencing factors |
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| LI Ke-qing, WANG Li-ning, NI Wen, ZHU Ming, LIU Bao-shun. Roasting reduction-magnetic separation technology of Xuaniong-type iron ore and its relevant influencing factors[J]. Chinese Journal of Engineering, 2011, 33(2): 153-156. DOI: 10.13374/j.issn1001-053x.2011.02.003 |
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| Authors: | LI Ke-qing WANG Li-ning NI Wen ZHU Ming LIU Bao-shun |
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| Affiliation: | 1.State Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Coal-based roasting reduction-magnetic separation technology for iron extraction from Xuanlong-type iron ores and its relevant influencing factors were investigated. An optimal technological condition for iron extraction from the iron ores was determined with iron concentrate grade and iron recovery rate as evaluation indices. The results show that the iron concentrate grade of 92.53% and the iron recovery rate of 90. 78% can be obtained when the reductant dosage is 30%, the roasting temperature is 1 200℃, the reduction time is 60 min, the percentage of roasting products with a grinding fineness of -45 μm is 96. 19%, and the magnetic field intensity is 111 kA·m-1. |
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| Keywords: | iron ores beneficiation hematite ore roasting ore reduction magnetic separation |
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