Title:
MOLTEN GLASS CONVEYING EQUIPMENT ELEMENT, METHOD FOR PRODUCING MOLTEN GLASS CONVEYING EQUIPMENT ELEMENT, AND GLASS MANUFACTURING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2013/011927
Kind Code:
A1
Abstract:
The present invention relates to a method for producing a molten glass conveying equipment element that comprises a conduit pipe structure for molten glass, said conduit pipe structure comprising at least one conduit pipe that is formed of platinum or a platinum alloy, a first ceramic structure arranged around the conduit pipe, and a second ceramic structure arranged around the first ceramic structure. The first ceramic structure is formed by filling the space between the conduit pipe and the second ceramic structure with a slurry material and sintering the slurry material at a temperature of 1,200-1,700˚C. The slurry material is obtained by blending first stabilized zirconia particles having a median diameter (D50) of 0.2-5 μm and second stabilized zirconia particles having a median diameter (D50) of 0.2-2 mm so that the mass ratio of the first stabilized zirconia particles to the second stabilized zirconia particles (mass of first stabilized zirconia particles/mass of second stabilized zirconia particles) is 0.3-0.6. The first stabilized zirconia particles and the second stabilized zirconia particles respectively contain, in mass% relative to the total composition, 75 wt% or more of zirconium oxide, with the ratio of cubic zirconia in the zirconium oxide being 80 wt% or more, and 6-25 wt% in total of at least one oxide that serves as a stabilizer and is selected from the group consisting of yttrium oxide and cerium oxide.
Inventors:
HAMASHIMA KAZUO (JP)
NIWA AKIFUMI (JP)
NIWA AKIFUMI (JP)
Application Number:
PCT/JP2012/067863
Publication Date:
January 24, 2013
Filing Date:
July 12, 2012
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
HAMASHIMA KAZUO (JP)
NIWA AKIFUMI (JP)
HAMASHIMA KAZUO (JP)
NIWA AKIFUMI (JP)
International Classes:
C03B5/43; C03B5/187; C03B5/225; C04B35/48
Domestic Patent References:
| WO2010067669A1 | 2010-06-17 | |||
| WO2004101466A1 | 2004-11-25 | |||
| WO2010067669A1 | 2010-06-17 | |||
| WO2004070251A1 | 2004-08-19 |
Foreign References:
| JP2006315894A | 2006-11-24 | |||
| JP2002087826A | 2002-03-27 | |||
| JP2006031589A | 2006-02-02 |
Other References:
See also references of EP 2735550A4
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
Yuriko Hamada (JP)
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Claims:
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