均相重结晶法制备4N级高纯铼酸铵过程研究  

Research and Process of 4N Grade High Purity Ammonium Rhenate Prepared by Homogeneous Recrystallization

作　　者：范嘉园 张洪宇[1] 唐俊杰 裴逍遥 曹楠 刘宇 Fan Jiayuan;Zhang Hongyu;Tang Junjie;Pei Xiaoyao;Cao Nan;Liu Yu(Shi-changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences,Liaoning,110016;Liaoning Zhongke Boyan Technology Co.,Ltd.,Liaoning,113122;Foshan Huizhen Technology Co.,Ltd.,Guangdong,528251)

机构地区：[1]中国科学院金属研究所师昌绪先进材料创新中心,辽宁110016 [2]辽宁中科博研科技有限公司,辽宁113122 [3]佛山汇真科技有限公司,广东528251

出　　处：《当代化工研究》2023年第18期1-4,共4页Modern Chemical Research

基　　金：沈抚示范区揭榜挂帅科技攻关项目“稀贵金属智能分离提纯系统开发与产业化”(项目编号:2021JH15);佛山中国科学院产业技术研究院产业化创新团队专项资金“新材料用高端智能装备的研发及产业化”(项目编号:ZK-TD-2019-04)。

摘　　要：本文以粗铼酸铵产品作为原料,采用均相重结晶法提高铼酸铵纯度,优化铼酸铵晶体形貌,明确铼酸铵重结晶提纯的最佳工艺参数。当铼酸铵溶液初始温度为50℃,溶液pH值为10,降温制度为50-20-10-5℃,重结晶次数为4次时,得到纯度在99.99%以上、晶粒生长完整、形貌均匀的铼酸铵晶体,为后续铼酸铵氢还原法制备高纯铼粉提供优质原料并且降低氢还原过程能耗,从而达到节能减碳的目的。The crude ammonium rhenate were selected as raw materials,a homogeneous recrystallization method was proposed to improve the purity of ammonium rhenate and optimizing the crystal morphology in this paper.The optimum technological parameters for recrystallization and purification of ammonium rhenate were determined.At the initial temperature of 50℃,solution pH value of 10,cooling system of 50-20-10-5℃,and recrystallization times of 4,the obtained ammonium rhenate crystal was grown intact with the purity above 99.99%.As a result,recrystallization process of ammonium rhenate can provide high-quality raw materials for the subsequent preparation of high purity rhenium powder and reduce energy consumption in hydrogen reduction process,so as to achieve the purpose of energy conservation and low carbon.

关 键 词：铼酸铵 重结晶 高纯铼粉 化学过程 

分 类 号：TF841.8[冶金工程—有色金属冶金]