Magnetizing roast and magnetic separation of iron in rare-earth tailings
Magnetizing roast and magnetic separation of iron in rare-earth tailings
复制标题
稀土尾矿中铁的磁化焙烧与磁选
DOI：
10.1007/s11771-016-3245-3
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发表时间：
2016-10
影响因子：
4.4
通讯作者：
Li Ying-nan
中科院分区：
文献类型：
--
作者：
Tang Rong;Xue Xiang-xin;Li Yong;Li Ying-nan
以煤为还原剂，采用磁化焙烧工艺实现了稀土尾矿中铁的磁选。研究了温度、碳氧比和冷却方式对稀土尾矿磁化率和组成的影响。结果表明，焙烧温度为650 °C、碳氧比为3.85、保温时间为2.5 h时，焙烧后稀土尾矿随炉沿着冷却有利于Fe 2 O3还原为Fe 3 O 4。在此焙烧条件下，稀土尾矿的磁化率为2.36，与理论值（2.33）非常接近。然而，稀土尾矿中的铁在随炉沿着冷却的磁选效果并不理想。通过比较不同冷却方式对稀土尾矿中铁的磁选效果，发现水冷比炉冷和空冷更有利于焙烧稀土尾矿中铁的磁选。稀土尾矿经水冷后，精矿铁品位为45.00%~ 49.00%，回收率为65.00%~ 77.50%。
Magnetic separation of iron in rare-earth tailings was achieved by magnetizing roast process with coal as reductant. Effects of the temperature, carbon to oxygen ratio, and cooling type on magnetic susceptibility and composition of rare-earth tailings were investigated. The results show that roast conditions with the temperature of 650 °C, carbon to oxygen ratio of 3.85, and holding time of 2.5 h are in favor of reduction of Fe2O3to Fe3O4when the roasted rare-earth tailings is cooled along with furnace. Under these roast conditions, magnetic susceptibility of rare-earth tailings is 2.36 that is very close to theoretical value (2.33). However, magnetic separation results of iron in rare-earth tailings cooled along with furnace are not satisfactory. Through comparing magnetic separation results of iron in rare-earth tailings cooled by different ways, it is found that water cooling is more favored of magnetic separation of iron in the roasted rare-earth tailings than furnace cooling and air cooling. Grade and recovery of iron in concentrate from rare-earth tailings cooled by water are 45.00%-49.00% and 65.00%-77.50%, respectively.
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DOI：
--
发表时间：
2008
期刊：
Multipurpose Utilization of Mineral Resources
影响因子：
--
作者：
Liu Bao-wei
通讯作者：
Liu Bao-wei
影响因子：
--
作者：
Zhang Li;C. Shu;Xiong Xiang-jun;Yu Xian-wang;Wang Yuan-jie
通讯作者：
Zhang Li;C. Shu;Xiong Xiang-jun;Yu Xian-wang;Wang Yuan-jie
影响因子：
--
作者：
Ren Jun-huang
通讯作者：
Ren Jun-huang
DOI：
10.1007/s12613-013-0744-1
发表时间：
2013-05
期刊：
International Journal of Minerals, Metallurgy, and Materials
影响因子：
--
作者：
Yong-sheng Sun;Yue-xin Han;Peng Gao;Ze-hong Wang;Duo-zhen Ren
通讯作者：
Yong-sheng Sun;Yue-xin Han;Peng Gao;Ze-hong Wang;Duo-zhen Ren
影响因子：
13.6
作者：
Zhang, Yali;Li, Huaimei;Yu, Xianjin
通讯作者：
Yu, Xianjin