稀土金属制备用石墨阳极特性分析  

Characterization of Graphite Anodes for Preparation of Rare Earth Metals

作　　者：贾宝玲 徐仰涛[1,2] 朱珍旭 孙伟[3] 高鹏 李贝 李宗成 JIA Baoling;XU Yangtao;ZHU Zhenxu;SUN Wei;GAO Peng;LI Bei;LI Zongcheng(Baiyin New Materials Research Institute,Lanzhou University of Technology,Baiyin 730900,Gansu,China;State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Lanzhou 730050,Gansu,China;Gansu Rare Earth New Material Co.,Ltd.,Baiyin 730922,Gansu,China)

机构地区：[1]兰州理工大学白银新材料研究院,甘肃白银730900 [2]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [3]甘肃稀土新材料股份有限公司,甘肃白银730922

出　　处：《矿冶工程》2024年第5期163-167,共5页Mining and Metallurgical Engineering

基　　金：甘肃省白银市科技计划项目(2022-2-29G,2023-1-22G)。

摘　　要：为探究影响稀土金属制备用石墨阳极使用寿命的主要因素,采用数码显微镜、光学显微镜、扫描电子显微镜、X射线衍射仪、同步热分析仪、四探针测试仪对不同使用寿命石墨阳极的宏观和微观形貌、晶体结构、石墨化度、热学性能、电阻率进行了比较和综合评估。结果表明,石墨阳极电阻率、内部裂纹及孔隙度是造成石墨阳极使用寿命差异的主要因素。研究结果可为稀土金属制备用石墨阳极的筛选提供参考,为企业降本增效提供技术支持。In order to investigate the main factors affecting the service life of graphite anodes used in preparation of rare earth metals,a range of analytical tools,including a digital microscope,an optical microscope,an SEM,XRD,a simultaneous thermal analyzer and a four-probe tester were employed for comparison and comprehensive evaluation of macroscopic and microscopic morphology,crystal structure,graphitization,thermal properties and resistances of graphite anodes with different service lives.The results indicate that the resistance,internal cracks and porosity of graphite anodes contribute mainly to the difference in the service life of graphite anodes.The research results can be of reference for selection of graphite anode in preparation of rare earth metals,thus providing technical assistance for enterprises to realize cost reduction and efficiency improvement.

关 键 词：石墨阳极 稀土金属 石墨电极 稀土熔盐电解槽 

分 类 号：TF845[冶金工程—有色金属冶金]