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An annealing kiln for crystallization of architectural float glass-ceramics and a method for crystallization of glass

A technology of glass-ceramic and annealing kiln, which is applied in the field of crystallization and annealing of flat glass-ceramics, can solve the problem of no application of float glass-ceramics, achieve neat cuts, improve the overall yield, and meet the requirements of crystallization and annealing. Effect

Active Publication Date: 2020-04-21
GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the application of float forming and post-annealing to ordinary flat glass is very mature, there is no application example for float flat crystal

Method used

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  • An annealing kiln for crystallization of architectural float glass-ceramics and a method for crystallization of glass
  • An annealing kiln for crystallization of architectural float glass-ceramics and a method for crystallization of glass
  • An annealing kiln for crystallization of architectural float glass-ceramics and a method for crystallization of glass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The annealing kiln for crystallization of glass-ceramics formed by the float method has a corresponding working capacity of 100 tons per day. The overall structure of the equipment is as follows figure 1 :

[0030] (1) The total length of the equipment is 342 meters. It is divided into nucleation zone, crystallization zone and annealing cooling zone from front to back. The nucleation area is 54 meters, the crystallization area is 54 meters, the annealing cooling area is 138 meters, and the remaining 96 meters are the heating area (including the heating area before the nucleation area and the area between the nucleation area and the crystallization area. The maximum temperature in the crystallization zone can reach 1100℃;

[0031] (2) The width of the original glass plate is 2 meters, and the plate thickness is 8 mm. According to the plate width, the inner width of the kiln is set to 2.4 meters. The glass is driven forward by the rollers at a uniform speed in the kiln. ...

Embodiment 2

[0034] Crystallization annealing kiln for glass-ceramics after float forming, the corresponding working capacity is 100 tons / day,

[0035](1) The total length of the equipment is 342 meters. It is divided into nucleation zone, crystallization zone and annealing cooling zone from front to back. Chemicalization and annealing work, in which the nucleation area is 54 meters, the crystallization area is 54 meters, the annealing cooling area is 138 meters, and the design maximum temperature of the crystallization area can reach 1100 ℃;

[0036] (2) The width of the original glass plate is 2.4 meters, and the plate thickness is 8mm. According to the plate width, the inner width of the kiln is set to 3 meters. The glass is driven forward by the rollers at a constant speed in the kiln. After the kiln, the nucleation treatment is carried out first, and the nucleation process is completed when passing through the nucleation zone; then the kiln slowly heats up to the crystallization tempe...

Embodiment 3

[0039] Crystallization annealing kiln for glass-ceramics after float forming, the corresponding working capacity is 100 tons / day,

[0040] (1) The total length of the equipment is 342 meters. It is divided into nucleation zone, crystallization zone and annealing cooling zone from front to back. Chemicalization and annealing work, of which the nucleation zone is 30 meters, the crystallization zone is 60 meters, the annealing cooling zone is 135 meters, and the remaining 117 meters are heating soaking zone and heating zone, and the crystallization zone is designed to have a maximum temperature of 1100°C;

[0041] (2) The width of the original glass plate is 2.4 meters, and the plate thickness is 8mm. According to the plate width, the inner width of the kiln is set to 3 meters. The glass is driven forward by the rollers at a uniform speed in the kiln. After the kiln, the nucleation treatment is carried out first, and the nucleation process is completed when passing through the nu...

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Abstract

The invention relates to an architectural float glass ceramics crystallization annealing kiln, and belongs to the technical field of crystallization annealing of flat-plate glass ceramics. The crystallization annealing kiln is of a roller bed-type structure and comprises a kiln body with an outer wall of a steel structure and an inner wall made from a thermal insulation material. A nucleation zone, a crystallization zone, and an annealing cooling zone are sequentially arranged from an inlet to an outlet of the crystallization annealing kiln. The kiln side wall and the kiln bottom of the crystallization zone are made from a mullite thermal insulation material, and the kiln side walls and the kiln bottoms of the nucleation zone and the annealing cooling zone are both made from a poly-light high-aluminum thermal insulation material. The kiln roofs of the crystallization zone, the nucleation zone and the annealing cooling zone are all made from a ceramic fiberboard, and a fiber blanket isarranged between the steel structure and the thermal insulation material. The crystallization annealing kiln achieves crystallization annealing treatment of large-sized flat-plate glass ceramics molded by a float glass process.

Description

technical field [0001] The invention belongs to the technical field of crystallization annealing of flat glass-ceramics, and relates to a crystallization annealing kiln for architectural float glass-ceramics and a glass crystallization method. Crystallization and annealing treatment of large-sized flat glass-ceramic formed by float method. Background technique [0002] At present, the crystallization of glass-ceramics mostly adopts primary crystallization annealing or secondary crystallization after annealing, and there is no clear specification for the annealing of flat glass-ceramics. Although the application of float forming and post-annealing to ordinary flat glass is very mature, there is no application example for float flat microcrystals. The crystallization temperature of glass-ceramics is high, the annealing temperature range is long, and the requirements for thermal insulation materials, temperature stability, and rollers are high, and the float method can be used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B25/08C03B32/02
CPCC03B25/08C03B32/02
Inventor 程金树蔡坤李诗文袁坚王瑞璞郝建晓王文田吴磊
Owner GLASS TECH RES INST OF SHAHE CITY OF HEBEI PROVINCE
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