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Electrical conductivity and viscosity of cryolite electrolytes for solar grade silicon (Si-SoG) electrowinning
Alternative TitleElectrical conductivity and viscosity of cryolite electrolytes for solar grade silicon (Si-SoG) electrowinning
Korenko Michal1; Vaskova Zuzana1; Simko Frantisek1; Simurda Michal1; Ambrova Marta2; Shi Zhongning3
2014
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume24Issue:12Pages:3944-3948
AbstractElectrical conductivity of molten binary and ternary mixtures based on the system NaF-AlF3-SiO2 was investigated by means of a tube-cell (made of pyrolytic boron nitride) with stationary electrodes. Viscosity of the binary system Na3AlF6-SiO2 was measured by computerized torsion pendulum method. It was found that conductivity and viscosity varied linearly with temperature in all investigated mixtures. Obtained content dependence of electrical conductivity (isotherms) was divided into two parts. First, one represented the content region up to 10% (mole fraction) of SiO2; second, the region was with a higher content of SiO2 (from 10% up to 40%). While the conductivity considerably decreased with content of SiO2 in the second part; it surprisingly rose in the low content range. A small addition of SiO2 to the molten cryolite (up to 10%) could slightly increase viscosity, but had no influence on the slope of this dependence since it is responsible for a glassy-networks formation in the melt. Further addition of SiO2 to the molten cryolite had a huge effect on the viscosity.
Other AbstractElectrical conductivity of molten binary and ternary mixtures based on the system NaF-AlF_3-SiO_2 was investigated by means of a tube–cell (made of pyrolytic boron nitride) with stationary electrodes. Viscosity of the binary system Na_3AlF_6-SiO_2 was measured by computerized torsion pendulum method. It was found that conductivity and viscosity varied linearly with temperature in all investigated mixtures. Obtained content dependence of electrical conductivity (isotherms) was divided into two parts. First, one represented the content region up to 10%(mole fraction) of SiO_2;second, the region was with a higher content of SiO_2 (from 10%up to 40%). While the conductivity considerably decreased with content of SiO_2 in the second part; it surprisingly rose in the low content range. A small addition of SiO_2 to the molten cryolite (up to 10%) could slightly increase viscosity, but had no influence on the slope of this dependence since it is responsible for a glassy-networks formation in the melt. Further addition of SiO_2 to the molten cryolite had a huge effect on the viscosity.
KeywordPYROLYTIC BORON-NITRIDE TUBE-TYPE CELL MIXTURES ELECTRODEPOSITION NA3ALF6-AL2O3-SIO2 MELTS electrical conductivity viscosity solar grade silicon molten salts molten cryolite-silica melts
Indexed ByCSCD
Language英语
Funding Project[Science and Technology Assistance Agency] ; [Slovak Grant Agency] ; [National Natural Science Foundation of China] ; [Program for New Century Excellent Talents, Ministry of Education of China]
CSCD IDCSCD:5329670
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/145635
Collection中国科学院金属研究所
Affiliation1.Slovak Acad Sci, Institute Inorgan Chem, SK-84536 Bratislava, Slovakia
2.陕西省地震局
3.中国科学院金属研究所
Recommended Citation
GB/T 7714
Korenko Michal,Vaskova Zuzana,Simko Frantisek,et al. Electrical conductivity and viscosity of cryolite electrolytes for solar grade silicon (Si-SoG) electrowinning[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2014,24(12):3944-3948.
APA Korenko Michal,Vaskova Zuzana,Simko Frantisek,Simurda Michal,Ambrova Marta,&Shi Zhongning.(2014).Electrical conductivity and viscosity of cryolite electrolytes for solar grade silicon (Si-SoG) electrowinning.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,24(12),3944-3948.
MLA Korenko Michal,et al."Electrical conductivity and viscosity of cryolite electrolytes for solar grade silicon (Si-SoG) electrowinning".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 24.12(2014):3944-3948.
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