FLOAT BATH ROOF MEMBER, FLOAT PLATE GLASS PRODUCTION DEVICE USING SAME, AND METHOD FOR PRODUCING FLOAT PLATE GLASS

摘要

when used in the creep deformation is suppressed float bath loop member, provides a float glass manufacturing apparatus and a float glass manufacturing method using the same. Determined, 90 mass% or more of the mullite sangyigo, and the sodium oxide, potassium oxide, titanium oxide, the total content of iron oxide is less than 2% by weight alumina-based sintered body contains silica, the mean grain size D50 is less than 1.0mm coarse particles and an average grain size D50 is composed of fine particles less than 0.1mm, and the coarse particles and the mass ratio of the fine particles 85 to 60% by weight and 15 to 40% by weight of the float bath loop members. ;