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投稿时间:2019-07-18 修订日期:2019-07-22
投稿时间:2019-07-18 修订日期:2019-07-22
中文摘要: 以Er2O3为铒源,在750 ℃,熔盐KF(25%)-LiF(20%)-ErF3(10%)-KCl(45%)体系中,下沉铝为阴极,研究铝铒中间合金的反电动势。结果表明:在16 A/dm2的条件下,反电动势随着时间增加出现先增大后稳定不变,加入2% Er2O3,反电动势平均下降0.19 V,测得加料周期为6 min。随着电流密度的增加,电流效率、铝铒中间合金中铒的浓度均呈现先增大后减小的趋势。在电解时间为24 min、12 A/dm2时电流效率达到最大值74.64%,合金中铒的浓度达到最大值3.65%。合金成分主要为Al3Er,少部分为Al12Er,且分布较为均匀。
Abstract:Reverse EMF of aluminum erbium intermediate alloy was investigated at 750 ℃, molten KF(25%)-LiF(20%)-ErF3(10%)-KCl(45%) system with Er2O3 as source of erbium. The results show that reverse EMF rises first and then stabilizes with increase of time under condition of 16 A/dm2. After adding Er2O3 (2%), anti-EMF drops 0.19 V on average, and the feeding period is 6 min. Current efficiency and erbium yield rise firstly and then drop with increase of current density. When electrolysis time is 24 min and current density is 12 A/dm2, erbium concentration in alloy reaches the maximum value of 3.65%, and current efficiency reaches the maximum value of 74.64%. Alloy is mainly composed of Al3Er and few of Al12Er, and the distribution is more uniform.
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基金项目:国家自然科学基金资助项目(51774180,51204094);辽宁省博士启动基金(20180540100);辽宁省百千万人才工程项目(2017104);辽宁科技大学人才项目(601011507-11)
作者 | 单位 | |
康红光 | 辽宁科技大学 | kk20190710@163.com |
李继东* | 辽宁科技大学 | lijidong1014@163.com |
张朝纲 | 辽宁科技大学 | |
王茜 | 辽宁科技大学 | |
王一雍 | 辽宁科技大学 | |
宁哲 | 辽宁科技大学 | |
路金林 | 辽宁科技大学 | |
李静 | 辽宁科技大学 |
引用文本:
康红光,李继东,张朝纲,王茜,王一雍,宁哲,路金林,李静.以Er2O3为铒源制备铝铒中间合金的反电动势研究[J].有色金属(冶炼部分),2019(12):65-70.
Kang Hongguang,Li Jidong,Zhang Chaogang,Wang Qian,Wang Yiyong,Ning Zhe,Lu Jinlin,Li Jing.Study on Reverse EMF of Aluminum Erbium Intermediate Alloy Prepared with Er2O3 as Erbium Source[J].Nonferrous Metals (Extractive Metallurgy),2019(12):65-70.
康红光,李继东,张朝纲,王茜,王一雍,宁哲,路金林,李静.以Er2O3为铒源制备铝铒中间合金的反电动势研究[J].有色金属(冶炼部分),2019(12):65-70.
Kang Hongguang,Li Jidong,Zhang Chaogang,Wang Qian,Wang Yiyong,Ning Zhe,Lu Jinlin,Li Jing.Study on Reverse EMF of Aluminum Erbium Intermediate Alloy Prepared with Er2O3 as Erbium Source[J].Nonferrous Metals (Extractive Metallurgy),2019(12):65-70.