本文已被：浏览 1991次 下载 1285次
投稿时间：2023-10-12 修订日期：2023-10-19 录用日期：2023-10-24 网络发布日期：2023-12-29
投稿时间：2023-10-12 修订日期：2023-10-19 录用日期：2023-10-24 网络发布日期：2023-12-29
中文摘要: 通过对国内某企业进口放射性铌铁精矿进行工艺矿物学分析，确定该精矿的主要矿相为烧绿石，同时伴生钛铁矿和白云母，矿石中放射性元素U和Th的含量分别为0.27%和1.03%。针对该铌铁精矿，探索H2SO4-Fe(Ⅲ)、H2SO4-HF-H2O2、H2SO4-HF、H2SO4-HF-H2O2-(NH4)2CO3体系中U和Th的浸出及分离效果，最终确定H2SO4-HF-H2O2-(NH4)2CO3多段浸出工艺能有效实现U和Th的脱除与分离。U、Th的脱除率分别为100%和80%。基于研究提出了铌铁精矿U、Th脱除及分离工艺流程。
Abstract:Through the process mineralogy analysis of the radioactive Nb-Fe concentrate imported by a domestic enterprise, the main mineral phase of the concentrate is pyrochlore, associated with ilmenite and muscovite. The contents of radioactive elements U and Th in the ore are 0.27% and 1.03% respectively. For this Nb-Fe concentrate, the leaching and separation effects of U and Th in H2SO4-Fe(Ⅲ), H2SO4-HF, H2SO4-HF-H2O2, and H2SO4-HF-H2O2-(NH4)2CO3 systems were explored. Finally, it is determined that H2SO4-HF-H2O2-(NH4)2CO3 multi-stage leaching process can effectively remove and separate U and Th. The removal efficiency of U and Th is 100% and 80% respectively. Based on the research, the removal and separation process of U and Th from Nb-Fe concentrate is proposed.
keywords: Nb-Fe concentrate uranium thorium multi-stage leaching
文章编号： 中图分类号： 文献标志码：
基金项目:国家自然科学基金资助项目（40067031）
引用文本：
柯平超,王坤坤,钟婷婷,周义朋,马晓磊,万凌云,徐玲玲,王键,黎广荣.放射性铌铁精矿中铀钍脱除及分离[J].有色金属（冶炼部分）,2024(2):83-91.
KE Pingchao,WANG Kunkun,ZHONG Tingting,ZHOU YIpeng,MA Xiaolei,WAN Lingyun,XU Lingling,WANG Jian,LI Guangrong.Removal and Separation of Uranium and Thorium from Radioactive Nb-Fe Concentrate[J].Nonferrous Metals (Extractive Metallurgy),2024(2):83-91.
柯平超,王坤坤,钟婷婷,周义朋,马晓磊,万凌云,徐玲玲,王键,黎广荣.放射性铌铁精矿中铀钍脱除及分离[J].有色金属（冶炼部分）,2024(2):83-91.
KE Pingchao,WANG Kunkun,ZHONG Tingting,ZHOU YIpeng,MA Xiaolei,WAN Lingyun,XU Lingling,WANG Jian,LI Guangrong.Removal and Separation of Uranium and Thorium from Radioactive Nb-Fe Concentrate[J].Nonferrous Metals (Extractive Metallurgy),2024(2):83-91.
关注微信公众号