MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Excess Vaporization of Na from Na2O-SiO2 Molten Slag by Transfer Thermal Plasma of Ar
Keiichiro KashimuraYoshiaki KitayamaKazuhiro Nagata
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2009 Volume 50 Issue 4 Pages 814-818

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Abstract

The transfer thermal plasma of argon (Ar) was deposited onto the surface of a Na2O-SiO2 molten slag at about 1200 to 1350°C, using a hybrid plasma furnace composed of transfer- and non-transfer plasma. Only the non-transfer plasma of Ar was deposited onto the slag, there was little vaporization of Na according to the thermodynamics. When the transfer plasma current was greater than 3 A, the amount of Na vaporized from the surface was seven times larger than the amount calculated by Faraday’s Law.

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© 2009 The Japan Institute of Metals and Materials
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