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- Title
Preparing High-Purity Anhydrous ScCl3 Molten Salt Using One-Step Rapid Heating Process.
- Authors
Xiao, Junhui; Chen, Chao; Ding, Wei; Peng, Yang; Zou, Kai; Chen, Tao; Zou, Zhiwei
- Abstract
In this study, a one-step rapid heating novel process was used to prepare high-purity anhydrous scandium chloride molten salt with low-purity scandium oxide. High-purity anhydrous ScCl3 molten salt was used as the Sc-bearing raw material for preparing the Sc-bearing master alloy. Inert gas was used to enhance the purity of anhydrous scandium chloride and reduce the hydrolysis rate of scandium. The results show that high-purity scandium chloride (purity, 99.69%) with the scandium content of 29.61%, was obtained, and the hydrolysis rate of scandium was 1.19% under the conditions used: removing ammonium chloride; residual crystal water temperature of 400 °C; m(Sc2O3):m(NH4Cl) = 1:2.5; holding-time of 90 min; heating-rate of 12 °C/min; and argon flow of 7.5 L/min. XRD, SEM, and EPMA analyses further verified that anhydrous scandium chloride crystallization condition was relatively good and the purity of high-purity anhydrous scandium chloride approached the theory purity of anhydrous scandium chloride.
- Subjects
FUSED salts; AMMONIUM chloride; WATER temperature; SCANDIUM; NOBLE gases; RAW materials
- Publication
Applied Sciences (2076-3417), 2020, Vol 10, Issue 15, p5174
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app10155174