Electrode system for glass melting furnaces
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United States of America Patent
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Issued Date -
Dec 29, 2005
app pub date -
Jun 17, 2005
filing date -
Jun 29, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An electrode system for glass melting furnaces with a melting tank is provided with an electrode holder (9) installed above the melt surface (20) and this electrode holder (9) has a coolant supply (24) and a metallic electrode (7). This is connected to the electrode holder (9) by means of a coolable threaded connection (8), whereby the coolant supply (24) projects into the upper end of the electrode (7). In order to install the cooled threaded connection (8) in the furnace chamber and to fit a permanent sheath (31) made of mineral material round the upper, cooled end of the electrode (7) and to protect this sheath (31) not only against chemical attack, but against mechanical cracking-off, in accordance with the invention the coolable end of the electrode (7) is surrounded by the sheath (31) of ceramic material, that is at least partly installed in a protective casing (32) made from corrosion and heat resistant metal. The ceramic sheath (31) is preferably connected to the electrode (7) by means of a contact cement (33).
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