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,
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 P2O5 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.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2010年第4期104-107,140,共5页
Environmental Science & Technology
基金
贵州省科学技术基金(黔科合J字[2007]182号)
关键词
磷矿浮选尾矿
综合回收
萃取相比
萃取率
反萃率
phosphate floatation tailings
integrated recovery
O/A extraction
extraction yield
stripping efficiency
