A method for producing a molten glass and conveying the molten glass conveying equipment element apparatus manufacturing apparatus and a glass element

The present invention relates to a method for producing a molten glass conveying equipment element, the molten glass conveying equipment element comprising: a conduit comprising at least one platinum or a platinum alloy containing a molten glass conduit structure disposed at a first ceramic surrounding the catheter structure and the second ceramic structure disposed around the first ceramic structure, the manufacturing method, the gap to the second conduit and the ceramic structure is filled slurry and the 1200 ~ 1700 ℃ sintering it at a temperature of the first ceramic structure is formed, the slurry by a median diameter D50 of 0.2 ~ 5μm first stabilized zirconia particles and a median particle size D50 of 0.2 ~ 2mm in two stabilized zirconia particles to the first particles stabilized zirconia relative to the mass of the second stabilized zirconia particles mass ratio (first stabilized zirconia particles / second stabilized zirconia particles by mass) of 0.3 to 0.6 is obtained with the embodiment, the first stabilized zirconia particles and the second stabilized zirconia particles, each containing composition relative to the whole mass% 75% And the proportion of zirconium oxide than the cubic zirconia in the proportion of zirconium oxide is 80 wt% or more, and containing in a total content of the group in terms of 6 to 25 wt% selected from the group consisting of yttrium oxide and cerium oxide in at least one as a stabilizer.