Determination of the Cryolite Ratio of KF-NaF-AlF{sub 3} Electrolyte by Conductivity Method

Journal Article · Wed Aug 15 00:00:00 EDT 2018 · Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science

DOI:https://doi.org/10.1007/S11663-018-1275-Y· OSTI ID:22857899

Yan, Hengwei ^[1]; Yang, Jianhong ^[2]; Liu, Zhanwei ^[1]; Wang, Chengzhi ^[3]; Ma, Wenhui ^[1]

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1. Kunming University of Science and Technology, State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province/The National Engineering Laboratory for Vacuum Metallurgy (China)
2. Jiangsu University, School of Material Science and Engineering (China)
3. Zhengzhou Research Institute of CHALCO (China)

The cryolite ratio (CR) is an important parameter for the electrolyte in aluminum reduction cells. The measurement method for the CR of the KF-NaF-AlF{sub 3} system acid (CR < 3) electrolyte by means of electrical conductivity was initially developed, and the formula for calculating the CR was deduced. This method has the advantages of simple operation and high precision. In addition, the relative standard deviations (RSD) of the measurement are < 1.2 pct, and the analysis error of the NaF or KF content has little effect on the determination of the CR.

• OSTI ID: 22857899
• Journal Information: Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science, Vol. 49, Issue 4; Other Information: Copyright (c) 2018 The Minerals, Metals & Materials Society and ASM International; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1073-5615
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACCURACY
ALUMINIUM
ALUMINIUM FLUORIDES
ELECTRIC CONDUCTIVITY
ELECTROLYTES
ERRORS
POTASSIUM FLUORIDES
REDUCTION
SODIUM FLUORIDES