Building microcrystalline glass and producing method thereof

The technology of a glass-ceramic and a production method, which is applied in the field of building materials, can solve the problems of toxicity of barium carbonate and the rising cost of glass raw materials, and achieve the effect of reducing the cost of raw materials

Inactive Publication Date: 2008-05-28
霍镰泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ZnO and BaO are high-priced raw materials, which greatly increase the cost of raw materials for glass. Moreover, the raw material barium carbonate introduced into BaO is still poisonous.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] According to the composition 1 in Table 1, a homogeneous batch is prepared and melted into a homogeneous glass melt at a temperature of 1350-1580°C. The glass melt is poured into water, quenched into slag, and the slag particles with a particle size of 0.5-6.5 mm are coarsely sieved for use. Put it in a refractory mold box whose inner wall is coated with refractory slurry (such as refractory ceramic slurry or alumina slurry) that is not sintered during high-temperature crystallization heat treatment, and raise the temperature at a rate of no more than 900°C / hour. After 900°C, the slag The grains begin to melt and merge with each other, and the surface of the slag piled up obviously sinks, that is, it obviously begins to sinter, and it is raised to 1200 ° C for a period of time to fully sinter, and then the temperature is lowered and annealed to obtain milky glass-ceramics.

Embodiment 2

[0024] Example 2 is carried out according to the steps of Example 1, but the composition of the glass must be changed from composition 1 in Table 1 to composition 2, and 1% NiO needs to be added as a colorant to obtain a brown color similar to the appearance of natural stone Glass-ceramic.

Embodiment 3

[0026] Embodiment 3 is carried out according to the steps of Embodiment 1, but the composition of the glass must be changed from composition 1 in Table 1 to composition 3, and additionally 0.5% Co 2 o 3 As a coloring agent, blue glass-ceramics can be produced with a natural stone-like appearance.

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PUM

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Abstract

The invention discloses a building glass-ceramic, which contains 50-68 portions of SiO2, 3-10 portions of Al2O3, 20-38 portions of CaO, 3-12 portions of R2O(Na2O+K2O+ Li2O), 0-3 portions of B2O3 and 0-12 portions of MgO. Besides, 0-1.5 portions of clarifier or 0-10 portions of colorant can be applied to the glass technique for clarifying and coloring. The glass batch limited by the components is melted, water quenched, sintered and crystallized, and then the surface is ground and polished, thereby obtaining the glass-ceramic with appearance similar to natural stone. On the premise of guaranteeing technique performance, crystallization performance and the decoration effect to the appearance of the product, the invention contains no BaO and ZnO, thus obviously reducing the cost of the raw materials of the building glass-ceramic.

Description

technical field [0001] The invention relates to the field of building materials, in particular, the invention relates to architectural glass-ceramics and a production method thereof. Background technique [0002] At present, the general glass-ceramic for imitation stone is mostly made of CaO-Al 2 o 3 -SiO 2 , MgO-Al 2 o 3 -SiO 2 or CaO-MgO-Al 2 o 3 -SiO 2 Several limited base glasses are used as mother glasses, and appropriate amounts of other modified components are added to obtain excellent comprehensive process performance, and a large number of patented glass compositions are derived. [0003] Japanese Patent Publication 50-116515 (Application No. 49-023175, published on September 11, 1975) disclosed the following content: 2 o 3 -SiO 2 On the basis of the ingredients, an additional (Na 2 O+K 2 O), in addition to specifying (BaO+ZnO) as an essential component, in order to further improve the fluidity in the sintering-crystallization process. In Chinese Inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C3/091C03C3/087C03B32/02
Inventor 肖绍展左明
Owner 霍镰泉
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