Viscosity Characteristics of LiF-DyF3-Cu2O-Dy2O3 Molten Salt System

被引：0

作者：

Liao C. ^{[1
]}

Lin J. ^{[1
]}

Cai B. ^{[1
]}

Chen S. ^{[1
]}

Wang X. ^{[1
]}

Zeng Y. ^{[1
]}

机构：

[1] Jiangxi University of Science and Technology, School of Metallurgy and Chemical Engineering, Ganzhou

来源：

Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2019年 / 37卷 / 05期

关键词：

Dy-Cu alloy; Dy[!sub]2[!/sub]O[!sub]3[!/sub]-Cu[!sub]2[!/sub]O; LiF-DyF[!sub]3[!/sub] molten salt; Viscosity;

D O I：

10.11785/S1000-4343.20190510

中图分类号：

学科分类号：

摘要：

Melt viscosity has significant influence in furnace hearth and electrode life and the effective separation of metal and molten salt during molten salt electrolysis. Therefore, this paper studied the viscosity of LiF-DyF3-Dy2O3-CuO molten salt system by rotating method in order to prepare Dy-Cu alloy better. The effects of temperature, the addition of single oxides (Dy2O3 or Cu2O) and mixed oxides (Dy2O3 and Cu2O) on the viscosity of molten salt systems were investigated. At the same time, the relationship between viscosity and temperature of molten salt was verified by Arrehnius formula, and the change rule of viscosity activation energy was calculated and analyzed. The results showed that at temperature range of 910~1030 ℃, the viscosity of LiF-DyF3 molten salt system decreases with the increase of temperature and the addition single oxide (Dy2O3 or Cu2O). As the mass ratio of Cu2O and Dy2O3 in the molten salt increases. The viscosity activation energy increases as the amount of addition of a single oxide (Dy2O3 or Cu2O) increases. The suitable temperature for preparing Dy-Cu alloy by molten salt electrolysis is 970~1000 ℃, W(Cu2O)+W(Dy2O3)=2.0% and W(Cu2O):W(Dy2O3) ratio is 1:0.5. © 2019, Editorial Office of Journal of the Chinese Society of Rare Earths. All right reserved.

引用

页码：589 / 595

页数：6

共 20 条

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