盐酸浸出白云鄂博选铁尾矿中经钙化焙烧的稀土

发布时间：2018-04-01 03:13

  本文选题：白云鄂博尾矿　切入点：盐酸浸出　出处：《金属矿山》2017年05期

【摘要】：白云鄂博选矿厂现弱磁选—强磁选—浮选工艺的弱磁选尾矿再经钙化焙烧—弱磁选选铁后的尾矿REO含量为12.27%,主要成分为稀土氧化物和萤石,氟磷灰石、石英等少量。对盐酸浸出其中稀土氧化物的工艺条件进行了研究。结果显示,在盐酸浓度为1.5 mol/L,浸出温度为45℃,液固比为10∶1 m L/g,浸出时间为60 min,搅拌速度为300 r/min情况下,稀土浸出率可达93.15%,氟浸出率仅为0.23%,表明在控制氟浸出的前提下稀土得到了高效浸出。
[Abstract]:The REO content of weak magnetic separation tailings after calcification calcination and weak magnetic separation iron separation in Bayan Obo concentrator is 12.27, mainly composed of rare earth oxides and fluorite, fluoroapatite, quartz and so on.The technological conditions for leaching rare earth oxides from hydrochloric acid were studied.The results show that the leaching temperature is 45 鈩，

本文编号：1693698