| 摘要 |
Provided are a molten glass manufacturing device and a molten glass manufacturing method which are suitable for manufacturing high-quality non-alkali glass, and a sheet glass manufacturing method using the device and the method. A molten glass manufacturing device for manufacturing molten glass which has a viscosity (?) of 102 (dPa?S) at a temperature (T?) in the range of 1500 - 1760°C, the molten glass manufacturing device being provided with a melting vessel, the melting vessel being provided with second bubblers and first bubblers provided upstream of the second bubblers. In the molten glass manufacturing device, if the length of the molten glass flow path of the melting vessel is LF, the distance from the upstream end of the molten glass flow path to the row of the first bubblers is in the range of 0.4LF - 0.5LF, the distance from the downstream end of the molten glass flow path to the row of the second bubblers is in the range of 0.45LF - 0.55LF, the distance (LP) between the row of the first bubblers and the row of the second bubblers is in the range of 500 - 1000 mm, the distance (LB1) between the row of the first bubblers and the burner closest to the row on the upstream side of the row is in the range of 0 - 2000 mm, the distance (LB2) between the row of the second bubblers and the burner closest to the row on the downstream side of the row is in the range of 800 - 2500 mm, and LB2 > LB1. |
