镧热还原法制备金属镱研究  

Preparation of Ytterbium by Lanthanum Thermal Reduction

作　　者：韩小亮 张永健 廖景文 陈旭魁 Han Xiaoliang;Zhang Yongjian;Liao Jingwen;Chen Xukui(Fujian Changting Golden Dragon Rare-earth Co.,Ltd.,Longyan 366300,Fujian;Fujian Key Laboratory of Rare-earth Functional Materials,Longyan 366300,Fujian)

机构地区：[1]福建省长汀金龙稀土有限公司,福建龙岩366300 [2]福建省稀土功能材料重点实验室,福建龙岩366300

出　　处：《福建冶金》2022年第1期26-29,共4页Fujian Metallurgy

摘　　要：本文对镧热还原法制取金属镱的工艺进行了研究,系统分析了制备金属镱的实验过程中所用还原剂用量、反应温度和反应时间等因素对整个还原反应的影响。结果表明:将反应温度控制在1200℃,还原剂金属La的投料系数0.9,反应时长为720分钟的条件下进行还原反应,最终可得到海绵状的金属镱产品,收率达到95%,分析其平均RE总量≥99.5%,镱相对RE纯度≥99.9%。In this paper,the process of preparation of metal ytterbium by lanthanum thermal reduction was studied,and the effects of reducing agent dosage,reaction temperature and reaction time on the reduction reaction were systematically analyzed.The results show that:when the reaction temperature is controlled at 1200℃,the feeding coefficient of reducing agent metal La is 0.9,and the reaction time is 720 minutes,a sponge like metal ytterbium product can be obtained with a yield of 95%,the average total RE is≥99.5%,and the relative purity of ytterbium is≥99.9%.

关 键 词：镧热还原 反应温度 反应时间 

分 类 号：TF845[冶金工程—有色金属冶金]