Industrial electric heating furnaces – Glass furnace device
Patent
1996-06-20
1999-03-09
Hoang, Tu Ba
Industrial electric heating furnaces
Glass furnace device
373109, 65 301, C03B 5193, C03C 1500
Patent
active
058810900
ABSTRACT:
An inner chamber is arranged inside an outer chamber and stores quartz crystal powder. A space is defined between the inner chamber and the outer chamber, and an oxygen gas is introduced into that space. The quartz crystal powder is supplied from the inner chamber into a burner section, together with the oxygen gas. The burner section is also supplied with a flammable gas from a gas control device. The flammable gas contains an NH.sub.3 gas. The heat produced by the combustion of the flammable and oxygen gases fuses the quartz crystal powder supplied from the inner chamber into the burner section. As a result, quartz containing nitrogen is produced. The nitrogen is contained in the fused quartz in an amount which is expressed as 1 to 10% by molar ratio.
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Kobayashi Hideyuki
Yamamoto Akihito
Hoang Tu Ba
Kabushiki Kaisha Toshiba
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