Title:
APPARATUS AND PROCESS FOR PRODUCING FLOAT GLASS
Document Type and Number:
WIPO Patent Application WO/2010/013575
Kind Code:
A1
Abstract:
An apparatus and process for float glass production are provided which enable a high-quality glass to be obtained.
In the apparatus (1) for float glass production, the front lintel gap (24) which is the gap between the surface of a molten glass (4) and a front lintel (12) separating a spout (7) from a float bath (3) is 10-40 mm when the apparatus is in the steady state. The atmosphere in the float bath (3) has a tin vapor concentration of 3-10 mg/m3 and a hydrogen concentration of 4-10 vol.%. The rate of nitrogen supply to the atmosphere in the float bath (3) is 5-20 Nm3/hr per m3 of the atmosphere in the float bath (3). The atmosphere in the spout (7) has a tin vapor concentration of 0.3-1 mg/m3 and a hydrogen concentration of 0-0.4 vol.%. The rate of nitrogen supply to the atmosphere in the spout (7) is 20-1,000 Nm3/hr, excluding 20 Nm3/hr, per m3 of the atmosphere in the spout (7).
Inventors:
BAN NOBUYUKI (JP)
IGA MOTOICHI (JP)
KAMIHORI TORU (JP)
IGA MOTOICHI (JP)
KAMIHORI TORU (JP)
Application Number:
PCT/JP2009/062011
Publication Date:
February 04, 2010
Filing Date:
June 30, 2009
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
BAN NOBUYUKI (JP)
IGA MOTOICHI (JP)
KAMIHORI TORU (JP)
BAN NOBUYUKI (JP)
IGA MOTOICHI (JP)
KAMIHORI TORU (JP)
International Classes:
C03B18/02
Foreign References:
| JPS421021B1 | ||||
| JPS515321A | 1976-01-17 | |||
| JP2008143746A | 2008-06-26 | |||
| JPS4812849B1 | 1973-04-24 | |||
| JP2003300739A | 2003-10-21 |
Attorney, Agent or Firm:
OGURI Shohei et al. (JP)
Shohei Oguri (JP)
Shohei Oguri (JP)
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