abstract |
(57) Abstract: A method for producing a float glass that reduces tin oxide defects. SOLUTION: A part of molten tin in a tin bath 1 is withdrawn from a molten tin discharge port 8, oxygen dissolved in the molten tin is removed in a tin oxide removal tank 3, and tin is returned from a molten tin return port 9. By returning to the bath 1, etc., in all places in the tin bath 1, The oxygen concentration in the molten tin is controlled to be less than the saturation solubility of oxygen in the molten tin. |