熔盐电解制备钆铁中间合金电解质体系物化性质  

Physico-chemical properties of electrolyte for preparation of Gd-Fealloy by molten salt electrolysis

作　　者：于兵 姚昌昱 张龙飞 贾志鹏 闫奇操 YU Bing;YAO Changyu;ZHANG Longfei;JIA Zhipeng;YAN Qicao(Baotou Rewin Rare Earth Metal Materials Co.Ltd.,Baotou 014030,Inner Mongolia,China;Ganjiang Innovation Academy,Chinese Academy of Sciences,Ganzhou 341000,Jiangxi,China)

机构地区：[1]包头瑞鑫稀土金属材料股份有限公司,内蒙古包头014030 [2]中国科学院赣江创新研究院,江西赣州341000

出　　处：《矿冶》2024年第5期738-745,共8页Mining And Metallurgy

基　　金：中国北方稀土(集团)高科技股份有限公司科研项目(BFXT-2023-D-0002)。

摘　　要：为了获得优质的Gd-Fe中间合金,以LiF-GdF_(3)电解质为研究对象,进行了初晶温度、密度、黏度以及氧化钆在电解质中溶解行为等研究。研究发现,初晶温度随LiF含量的增加而降低,是因为GdF_(3)与LiF发生络合作用生成LiGdF_(4)放热导致;电解质黏度随LiF含量的增加而减小;温度一定时,电解质的密度随GdF 3含量的升高而增大;当电解质配成一定时,密度随着温度的升高而减小;制备的Gd-Fe中间合金产品主要由Gd和GdFe 2组成,且成分均匀。In order to obtain high quality Gd-Fe intermediate alloy,the initial crystal temperature,density,viscosity and dissolution behavior of gadolinium oxide in the electrolyte of LiF-GdF_(3)were studied.It was found that the initial crystal temperature decreased with the increase of LiF content,which was caused by the complexation of GdF_(3)and LiF to generate LiGdF_(4)heat release.The electrolyte viscosity decreases with the increase of LiF content.At the specified temperature,the electrolyte density increases with the increase of GdF_(3)content.When the electrolyte is matched,the density decreases with the increase of temperature.The prepared Gd-Fe intermediate alloy products are mainly composed of Gd and GdFe_(2),and the composition is uniform.

关 键 词：Gd-Fe中间合金 熔盐电解 物化性质 氟化物体系 

分 类 号：TF63[冶金工程—钢铁冶金] TF12[化学工程—电化学工业] TQ151