张仕恒,陈朝轶,李军旗,兰苑培.高钛铝土矿磁选分离特性及含铝尾矿溶出性能研究[J].有色金属(冶炼部分),2019(4):11-14.
高钛铝土矿磁选分离特性及含铝尾矿溶出性能研究
Magnetic Separation Characteristics of High Titanium Bauxite and Dissolution Properties of Aluminum-Bearing Tailings
投稿时间:2018-12-24  修订日期:2019-01-10
DOI:doi:10.3969/j.issn.1007-7545.2019.04.003
中文关键词:  高钛铝土矿  磁选  溶出
英文关键词:high titanium bauxite  magnetic separation  dissolution
基金项目:国家自然科学基金资助项目(51664005,51774102,51574095,51474079);贵州省科技计划项目(黔科合人才[2017]5626,黔科合平台人才[2017]5788-9)
           
作者单位
张仕恒 贵州大学 材料与冶金学院
陈朝轶 贵州大学 材料与冶金学院
李军旗 贵州大学 材料与冶金学院
兰苑培 贵州大学 材料与冶金学院
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中文摘要:
      研究某高钛铝土矿在不同磁场强度、磁选液固比及磁选时间条件下钛(铁)和铝的分离特性,并研究了磁选后含铝尾矿在不同溶出条件下的溶出特性。结果表明,在磁场强度19.5 kA/m、磁选液固比5︰1、磁选时间4 min时,铝回收率为75.19%,钛、铁脱除率分别为57.45%和73.95%。含铝尾矿在溶出时间45 min、石灰添加量2%、碱浓度180 g/L时,氧化铝实际溶出率为80.95%。磁选工艺能较好地实现高钛铝土矿中钛(铁)和铝的分离,且分离后含铝尾矿具有较好溶出特性。
英文摘要:
      Separation characteristics of titanium (iron) and aluminum of high titanium bauxite under different magnetic field intensity, ratio of liquid to solid (L/S) of magnetic separation, and magnetic separation time were studied. Dissolution properties of aluminum-bearing tailings were investigated. The results show that aluminum recovery rate is 75.19%, removal rate of titanium and iron is 57.45% and 73.95% respectively under the conditions including magnetic field intensity of 19.5 kA/m, L/S of magnetic separation of 5︰1, and magnetic separation time of 4 min. Actual alumina dissolution rate of aluminum-bearing tailings is 80.95% under the conditions including dissolution time of 45 min, lime dosage of 2%, and alkali concentration of 180 g/L. Separation of titanium (iron) and aluminum in high titanium bauxite is achieved by magnetic separation process, and aluminum-bearing tailings after separation have better dissolution characteristics.
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