Glass melting furnace, glass manufacturing apparatus, and glass manufacturing method
A technology of glass melting furnace and alumina, which is applied in the direction of glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., which can solve the problem of increased heat dissipation of large vaulted roof structures, and achieve the effect of reducing heat dissipation
Pending Publication Date: 2021-10-26
ASAHI GLASS CO LTD
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Problems solved by technology
[0004] According to Patent Document 1, the volatilized gas (furnace gas) from the glass leaks out of the furnace through the joints between the refractory blocks, thereby corroding the heat-resistant block arranged on the upper layer of the refractory blocks, and furthermore, the gas from the large vault structure Increased heat dissipation becomes a problem
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[0057] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0058]
[0059] figure 1 It is a schematic sectional view of the glass melting furnace which concerns on one Embodiment of this invention. figure 2 for viewing from the side figure 1 A schematic cross-sectional view of the glass melting furnace shown. figure 2 equivalent to figure 1 A sectional view along line II-II. in addition, figure 1 equivalent to figure 2 The sectional view along the I-I line.
[0060] Such as figure 1 As shown, the glass melting furnace 100 of this embodiment has the melting tank 11 which supplies glass raw material inside, and the upper structure 13 which covers the upper part of the melting tank 11. As shown in FIG. In addition, although not shown, a burner for heating is provided in the upper structure 13 , and an energizing electrode is provided in the melting tank 11 . The melting tank 11 is supported by an appropriat...
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The invention relates to a glass melting furnace, a glass manufacturing apparatus and a glass manufacturing method. This glass melting furnace having a large arch ceiling structure is provided with a refractory layer (25) and a heat-resistant layer (29). The refractory layer (25) has a block row in which a plurality of refractory blocks (23) are arranged in an arch shape, and the heat-resistant layer (29) is arranged above the refractory layer (25) and has heat-resistant blocks (27) having a larger porosity than the refractory blocks (23). The refractory layer (25) has: a plurality of block segments in which a plurality of block rows are connected in the longitudinal direction of the glass melting furnace; and a gap portion S between the plurality of block segments and absorbing thermal expansion in the longitudinal direction of the refractory block (23). The large arch ceiling structure is provided with a first heat insulation component (51) which surrounds the upper opening of the gap portion S and defines a first space (45) on the inner side. The first heat-insulation component (51) is formed from a refractory material having a porosity of 50% or less.
Description
technical field [0001] The present invention relates to a glass melting furnace, a glass manufacturing device and a glass manufacturing method. Background technique [0002] Since the glass melting furnace needs to melt glass, the temperature in the furnace is very high. The inner surface side of the furnace wall, ceiling, etc. is made of refractory bricks that are resistant to the temperature in the furnace. block (heat-resistant block) so that the heat in the furnace does not escape to the outside. [0003] Furthermore, there has been proposed a large-vaulted roof structure (Dasaku patio structure) having a dome-shaped arch in which electroforming is used when the temperature in the furnace reaches a high temperature of about 1650°C by specializing the molten glass. Bricks are used as refractory blocks (see Patent Document 1). [0004] According to Patent Document 1, the volatilized gas (furnace gas) from the glass leaks out of the furnace through the joints between the ...
Claims
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Login to View More IPC IPC(8): C03B5/42C03B5/43
CPCC03B5/42C03B5/43F27D1/0009F27D1/02F27D1/04
Inventor 吉中泰辉
Owner ASAHI GLASS CO LTD