期刊论文

Recovering Beryllium from Leaching Solution of Beryllium Concentrates

中文

稀有金属

0258-7076

2016

40

1

71-76

10.13373/j.cnki.cjrm.2016.01.012

湖南省科技厅重点项目（2013GK2023）资助；

本校为第一机构

铍是一种稀缺的战略资源, 其主要表现在储量少, 需求量大。 铍矿石浸出液中过多的杂质会给铍的回收带来麻烦, 氟是铍浸出液中的有害杂质, 氟含量的多少会直接影响铍浸出液中铍的回收率。 针对BeO浓度为16.86 g·L~(-1)的铍精矿浸出液进行了回收工艺试验, 用NH_3·H_2O代替NaOH沉淀浸出液中的铍, 使得浸出液中的F~-能与NH_3·H_2O生成NH_4F。 重点分析了氨水对铍的沉淀效率、 氢氧化钠用量对氢氧化铍的溶解以及水用量对氢氧化铍水解的影响。 结果表明, 浸出液中铍回收的最佳工艺条件为: 沉淀pH为8.5, 碱溶时滤饼中氢氧化钠用量为氧化铍质量的13倍, 水解时自来水用量为滤液体积的5倍。 铍的总回收...

Beryllium is one kind of rare strategic resource. The geological reserve is very low, while the demand is vast. Excessive impurities in leachate of beryllium ore could cause some difficulties for beryllium recovery. Fluoride, as a harmful impurity, directly influences the beryllium recovery in leaching solution. Beryllium recovering experiments were performed by beryllium ore leaching solution with concentration of 16.86 g·L-1BeO. The precipitation of beryllium was conducted by NH3·H2O instead of NaOH solution, which made F-in the leaching solution react with NH3·H2O to ge...