| 摘要 |
The present invention provides a crown structure suitable for a glass melting furnace capable of effectively preventing leakage of in-furnace gas also at the glass melting furnace whose in-furnace temperature becomes around 1650°C. A crown structure 1 includes: a corrosion resistant layer 2 aligning and disposing plural pieces of refractory blocks 2a to be a vault shape at a furnace inner side of the glass melting furnace; and a gas leakage blocking layer 3 including plural pieces of heat-insulating blocks 3a disposed at an upper layer of the refractory blocks 2a of the corrosion resistant layer 2, a dense castable refractory 3b provided to cover at least joints of the refractory blocks 2a, and a lightweight heat-insulating castable refractory 3c stacked on the dense castable refractory 3b and provided to embed a space formed by the heat-insulating blocks and the dense castable refractory. |
