重溶水解法制备高纯氧化铍试验研究  

Preparation of High Purity Beryllium Oxide by Resolubility Hydrolysis Method

作　　者：张佳宇 牛玉清[1] 叶开凯 曹笑豪 康毛毛 李荣亮 ZHANG Jiayu;NIU Yuqing;YE Kaikai;CAO Xiaohao;KANG Maomao;LI Rongliang(Beijing Research Institute of Chemical Industry and Metallurgy,CNNC,Beijing 101149,China)

机构地区：[1]核工业北京化工冶金研究院,北京101149

出　　处：《湿法冶金》2024年第3期309-313,共5页Hydrometallurgy of China

摘　　要：针对高氟铀铍矿提铀过程中,利用所得BeSO_(4)溶液制备氢氧化铍时存在杂质较高问题,研究了采用重溶水解法处理高Fe、Al杂质的粗氢氧化铍沉淀,考察了粗Be(OH)_(2)沉淀方式、NaOH用量、重溶温度对粗Be(OH)_(2)重溶效果的影响。结果表明:采用重溶水解法能使Be与SO_(4)^(2-)高效分离,大幅降低产品中Fe、Al含量;将所得纯度较高Be(OH)_(2)进行焙烧可制备符合工业标准的高纯BeO产品。In order to solve the problem of high impurity in the preparation of beryllium hydroxide by BeSO_(4)solution in the process of uranium extraction from high fluoride uranium-beryllium ore,the precipitation of crude beryllium hydroxide with high Fe and Al impurities was studied by resolubility hydrolysis method.The effects of precipitation method of crude Be(OH)_(2),the amount of NaOH and resolubility temperature on the resolubility of crude Be(OH)_(2)were investigated.The results show that Be and SO_(4)^(2-)can be separated efficiently by resolubility hydrolysis method,and the content of Fe and Al in the product can be greatly reduced.The high purity BeO products can be prepared by roasting the obtained high purity Be(OH)_(2)which meets the industrial standard.

关 键 词：氢氧化铍 高纯氧化铍 重溶水解法 氢氧化钠 氨水 制备 

分 类 号：TF824[冶金工程—有色金属冶金]