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Optimization of magnetic separation process for iron recovery from steel slag 被引量:2
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作者 Yuan-pei Lan Qing-cai Liu +2 位作者 Fei Meng De-liang Niu Heng Zhao 《Journal of Iron and Steel Research(International)》 SCIE EI CAS CSCD 2017年第2期165-170,共6页
To improve the efficiency of iron recovery from steel slag and reduce the wear-and-tear on facilities, a new method was proposed by adding a secondary screen sizer to the magnetic separation process according to grain... To improve the efficiency of iron recovery from steel slag and reduce the wear-and-tear on facilities, a new method was proposed by adding a secondary screen sizer to the magnetic separation process according to grain size distribution of magnetic iron (M-Fe) in the slag. The final recycling efficiency was evaluated by calculating the percentage of recycled M-Fe to the maximum amount of M-Fe that could be recovered. Three types of slags, namely basic oxygen furnace slag, desul- furization slag, and iron ladle slag, were studied, and the results showed that the optimized re- covery efficieneies were 93.20%, 92. 48%, and 85.82% respectively, and the recycling efficien eies were improved by 9.58%, 7.11%, and 6.24% respectively. Furthermore, the abrasion between the mill equipment and the remaining slags was significantly reduced owing to the efficient recovery of larger M-Fe particles. In addition, the using amount of grinding balls was reduced by 0. 46 kg when every 1 t steel slag was processed. 展开更多
关键词 steel slag magnetic separation iron recovery recovery efficiency abrasion
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转炉钢渣磁选回收试验研究 被引量:3
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作者 王亮 卜显忠 +1 位作者 陈伟 康建雄 《矿业研究与开发》 CAS 北大核心 2022年第11期48-53,共6页
中国钢渣排放量巨大,且尚未得到有效回收利用。某转炉钢渣中铁含量较高,有用矿物主要为金属铁和氧化铁相,以块状或长条状嵌布在钢渣中,可磨性差。基于对原矿性质和细粒级有用矿物嵌布状态的研究,采用磨矿分级-弱磁选的工艺流程,可分级出... 中国钢渣排放量巨大,且尚未得到有效回收利用。某转炉钢渣中铁含量较高,有用矿物主要为金属铁和氧化铁相,以块状或长条状嵌布在钢渣中,可磨性差。基于对原矿性质和细粒级有用矿物嵌布状态的研究,采用磨矿分级-弱磁选的工艺流程,可分级出+0.5mm粒级磨矿产品,得到品位92.80%、回收率56.90%的铁精矿1。再将-0.5mm粒级试样在磁场强度120kA/m条件下湿式磁选,得到品位54.73%、回收率11.31%的铁精矿2。相比于传统的磨矿-磁选工艺,利用矿物硬度的差异,将合格产品及时选出,大大节约了能源,降低了选矿成本,具有一定的工业推广价值。 展开更多
关键词 钢渣 分级磁选 综合回收 铁精矿
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