Alumina Solubility in KF-NaF-AlF3-Based Low-Temperature Electrolyte

作者：Yan, Hengwei^*; Yang, Jianhong; Li, Wangxing; Chen, Shazi

来源：Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 2011, 42(5): 1065-1070.

DOI：10.1007/s11663-011-9535-0

• SYSTEM
• THERMODYNAMICS

KF-NaF-AlF3-based electrolyte is a promising low-temperature electrolyte for aluminum reduction. Alumina solubility in molten KF-NaF-AlF3-based electrolyte was determined as a function of the melt composition and temperature by measuring the weight loss of a rotating corundum disk and by using a LECO RO500 oxygen analyzer (LECO Corporation, St. Joseph, MI). The investigated temperature range is 1023 K to 1073 K (750 degrees C to 800 degrees C), and the total cryolite molar ratio (CRt = ([KF]+[NaF])/[AlF3]) is 1.3 to 1.5; the content of NaF ranges from 0 mol pct to 50 mol pct. The effect of temperature, CaF2, and LiF on alumina solubility is discussed as well.
DOI: 10.

• 出版日期2011-10
• 单位中南大学; 中国铝业郑州有色金属研究院有限公司