Method for manufacturing float glass and device therefor

• Main Authors: INOUE ATSUSHI, KAMIHORI TORU, TAKIGUCHI TETSUSHI, IGA MOTOICHI
• Format: Patent
• Language: English
• Published: 01.02.2007
• Subjects: CHEMISTRY; GLASS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL

It is an object of the present invention to provide a device for manufacturing float glass, which is capable of not only making the circulation paths for the molten metal compact but also suppressing the occurrence of heat loss. In a method for manufacturing float glass comprising sucking a molten glass ribbon in a substantially vertical direction along both edges of the molten glass ribbon to form recessed portions on a bath surface, and carrying out the flat glass formation with the edges being flowed into and held by the recessed portions; circulation ducts are used to circulate the molten metal to form the recessed portions, each of the circulation ducts comprising an intake duct and an return duct, and the molten metal is circulated through a path for the return duct after flowing out of the intake duct, the path for the return duct being formed between the intake duct and refractory bricks, the refractory bricks being disposed outside the intake duct so as to cover the intake duct, being spaced from the intake duct by a gap.