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| 萃取-反萃法综合回收磷矿浮选尾矿中磷和镁 | |
| 引用本文： | 黄芳,王华,李军旗,陈义,杨书怀.萃取-反萃法综合回收磷矿浮选尾矿中磷和镁[J].环境科学与技术,2010,33(4). |
| 作者姓名： | 黄芳 王华 李军旗 陈义 杨书怀 |
| 作者单位： | 1. 昆明理工大学材料与冶金工程学院,云南,昆明,650093;贵州大学材料与冶金学院,贵州,贵阳,550003 2. 昆明理工大学材料与冶金工程学院,云南,昆明,650093 3. 贵州大学材料与冶金学院,贵州,贵阳,550003 |
| 摘 要： | 针对某磷矿浮选尾矿的资源特点,将其作为高镁低品位磷矿进行处理,用萃取-反萃法分离酸浸液中的镁和磷。选择正丁醇作为萃取剂,在磷酸浓度为30%、萃取相比为1:1,温度为常温,萃取时间为5min的均衡搅拌条件下,五氧化二磷萃取率可达68%以上;用水作为反萃剂,在其加入量为反萃前有机相体积的30%,反萃时间为3min,常温条件下进行反萃,反萃率可达90%以上。该研究为综合回收磷矿浮选尾矿提供了基础性资料, |
| 关 键 词： | 磷矿浮选尾矿 综合回收 萃取相比 萃取率 反萃率 |
Recovering P and Mg from Phosphate Floatation Tailings Using Extraction-Stripping Process |
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| Abstract: | To reclaim resources from phosphate floatation tailings dumped by a big phosphate mine, a lab-scale experiment was conducted with n-butanol as an extraction agent, focusing on the recovery of magnesium and phosphorus. Result shows that more than 68% of P_2O_5. extraction yield can be obtained under the optimum condition, and stripping efficiency reaches up to 90% when using water as stripping agent. As a result, the experiment assists in realizing the integrated recovery of phosphate floatation tailings. |
| Keywords: | phosphate floatation tailings integrated recovery O/A extraction extraction yield stripping efficiency |
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