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投稿时间：2018-12-24 修订日期：2019-01-10 录用日期：2019-01-14 网络发布日期：2019-03-19
投稿时间：2018-12-24 修订日期：2019-01-10 录用日期：2019-01-14 网络发布日期：2019-03-19
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。
Abstract: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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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 | sheshou_1234@sina.com |
| 陈朝轶* | 贵州大学 材料与冶金学院 | 546892428@qq.com |
| 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 |
| Author Name | Affiliation | |
| zhangshiheng | college of Material and Metallurgy, Guizhou University | sheshou_1234@sina.com |
| chenchaoyi | 546892428@qq.com | |
| lijunqi | ||
| lanyuanpei |
引用文本：
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.
zhangshiheng,chenchaoyi,lijunqi,lanyuanpei.Magnetic Separation Characteristics of High Titanium Bauxite and Dissolution Properties of Aluminum-Bearing Tailings[J].Nonferrous Metals (Extractive Metallurgy),2019(4):11-14.
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.
zhangshiheng,chenchaoyi,lijunqi,lanyuanpei.Magnetic Separation Characteristics of High Titanium Bauxite and Dissolution Properties of Aluminum-Bearing Tailings[J].Nonferrous Metals (Extractive Metallurgy),2019(4):11-14.
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