Noble metal duct for conducting a glass melt and method for...

Details Noble metal duct for conducting a glass melt and method for... Noble metal duct for conducting a glass melt and method for...

2006-03-07

2006-03-07

Vincent, Sean (Department: 1731)

Glass manufacturing

Glass conditioning channel section

C065S134900, C065S135100, C065S374120

Reexamination Certificate

active

07007515

ABSTRACT:
The double-walled noble metal duct (1) for conducting a glass melt has an outer noble metal pipe (1b) and an inner noble metal pipe (1a) extending within the outer pipe, so that an inner space (21) is formed within the inner pipe and an intermediate space (23) is formed between the inner pipe (1a) and the outer pipe (1b). The intermediate space is completely filled with glass melt when the double-walled noble metal duct conducts the glass melt, when the outer pipe (1b) has an exhaust vent (4). The outer pipe (1b) also has a bottom outlet (7) communicating with the intermediate space for removal of oxygen bubbles formed on the outer wall. The noble metal duct can be used in glass conditioning and in the manufacture of glass articles that are devoid of polyvalent ions.

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