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有色金属(冶炼部分):2019,(12):65-70
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以Er2O3为铒源制备铝铒中间合金的反电动势研究
康红光, 李继东, 张朝纲, 王茜, 王一雍, 宁哲, 路金林, 李静
(辽宁科技大学)
Study on Reverse EMF of Aluminum Erbium Intermediate Alloy Prepared with Er2O3 as Erbium Source
Kang Hongguang, Li Jidong, Zhang Chaogang, Wang Qian, Wang Yiyong, Ning Zhe, Lu Jinlin, Li Jing
(University of Science and Technology Liaoning,)
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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)
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.

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