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有色金属(冶炼部分):2018,(9):27-31
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磁化焙烧对高铁铝土矿中铁元素的分离回收影响
夏飞龙,李军旗,陈朝轶,魏国令,兰苑培
(贵州大学 材料与冶金学院;贵州省冶金工程与过程节能重点实验室,贵州大学 材料与冶金学院,贵州大学 材料与冶金学院,贵州大学 材料与冶金学院,贵州大学 材料与冶金学院)
Effect of Magnetization-Roasting on Iron Recovery from High Iron Bauxite
XIA fei-long,LI jun-qi,CHENG chao-yi,WEI guo-ling and LAN yuan-pei
(College of Materials and Metallurgy,Guizhou University,,,,)
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投稿时间:2018-03-27     修订日期:2018-03-27     录用日期:2018-04-02     网络发布日期:2018-08-20
中文摘要: 对铝土矿进行磁化焙烧—磁选处理,考察氢气通入量,焙烧温度及焙烧时间对铁回收率和品位的影响,并研究不同焙烧条件下矿石中铁元素的分离规律。结果表明,当氢气流量为40 mL/min、400 ℃焙烧75 min后,铝土矿中铁的回收率及回收品位最优,分别为69.58%和44.59%,能较好实现铁质元素的分离和回收。该条件下焙烧磁选后的铝精矿氧化铝的实际溶出率为86.2%,比未经过焙烧磁选的铝土矿提高了6.6个百分点。
中文关键词: 铝土矿  磁化焙烧  磁选  铁回收  溶出性能
Abstract:Bauxite was treated by magnetization-roasting and magnetic separation. Effects of hydrogen flow rate, roasting temperature and time on separation ratio and grade of iron concentrate were investigated. Separation of iron element under different roasting condition was studied. The results show that iron grade in iron concentrate is 44.59% with iron recovery of 69.58% under the optimum conditions including H2 flow rate of 40 mL/min and roasting at 400 ℃ for 75 min. Dissolution ratio of aluminum concentrate obtained from optimum magnetization-roasting and magnetic separation conditions is 86.2% with 6.6% higher than that of bauxite without magnetization roasting and magnetic separation.
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基金项目:国家自然科学基金资助项目(51774102,51574095,51664005);贵州冶金资源综合利用工程研究中心项目(黔教合KY字[2015]334号,黔科合LH字[2014]7609)
引用文本:
夏飞龙,李军旗,陈朝轶,魏国令,兰苑培.磁化焙烧对高铁铝土矿中铁元素的分离回收影响[J].有色金属(冶炼部分),2018(9):27-31.
XIA fei-long,LI jun-qi,CHENG chao-yi,WEI guo-ling,LAN yuan-pei.Effect of Magnetization-Roasting on Iron Recovery from High Iron Bauxite[J].Nonferrous Metals (Extractive Metallurgy),2018(9):27-31.

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