<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Electrical conductivity of NaF-KF-AlF3 melts with different ratios of sodium fluoride and potassium fluoride was measured using a pyrolytic boron nitride tube-type cell with constant distance of electrodes. Molar cryolite ratios MR = (n(NaF) + n(KF))/n(AlF<sub>3</sub>) varied from 1.5 to 1.2 (with a step 0.1) in the temperature range of (675—900) °C. <italic>AC</italic>-techniques with a sine wave signal with small amplitude in the high frequency range were applied. Electrolyte resistance was obtained from nonlinear regression analysis according to equivalent circuit. Concentration and temperature dependency of electrical conductivity was described and defined. Experimental data were compared with literary sources and regression equations.</p></abstract>

Electrical conductivity of NaF-KF-AlF3 melts with different ratios of sodium fluoride and potassium fluoride was measured using a pyrolytic boron nitride tube-type cell with constant distance of electrodes. Molar cryolite ratios MR = (n(NaF) + n(KF))/n(AlF3) varied from 1.5 to 1.2 (with a step 0.1) in the temperature range of (675—900) °C. AC-techniques with a sine wave signal with small amplitude in the high frequency range were applied. Electrolyte resistance was obtained from nonlinear regression analysis according to equivalent circuit. Concentration and temperature dependency of electrical conductivity was described and defined. Experimental data were compared with literary sources and regression equations.

Electrical conductivity of low-temperature sodium-potassium cryolite melts

Institute of Inorganic Chemistry, Technology and Materials, Faculty of Chemical and Food Technology

Acta Chimica Slovaca

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Electrical conductivity of low-temperature sodium-potassium cryolite melts"}

Electrical conductivity of NaF-KF-AlF3 melts with different ratios of sodium fluoride and potassium fluoride was measured using a pyrolytic boron nitride...

Electrical conductivity of low-temperature sodium-potassium cryolite melts

Publié en ligne: 09 juil. 2019

Pages: 22 - 26

DOI: https://doi.org/10.2478/acs-2019-0004

Mots clés
electrical conductivity, aluminium electrowinning, low-temperature electrolytes

© 2019 Emília Kubiňáková et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Electrical conductivity of low-temperature sodium-potassium cryolite melts

Publié en ligne: 09 juil. 2019

Pages: 22 - 26

DOI: https://doi.org/10.2478/acs-2019-0004

Mots cléselectrical conductivity, aluminium electrowinning, low-temperature electrolytes

© 2019 Emília Kubiňáková et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
electrical conductivity, aluminium electrowinning, low-temperature electrolytes