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Method for producing nano crystalline stone materials

A production method and technology of microcrystalline stone, applied in glass production and other directions, can solve the problems of high probability of product defects, complicated production process, and reduced product qualification rate.

Inactive Publication Date: 2008-05-21
SHANTOU SPECIAL ECONOMIC ZONE GUOFEN INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: 1) the scale of the process is small, it is difficult to meet the market demand; 2) the process of the process is complicated, and it is impossible to form a one-stop production, resulting in a high probability of product defects, which reduces the product qualification rate; 3) because the process uses The traditional secondary sintering method results in high energy consumption and more loss; 4) The flatness of the product is difficult to control and the small holes of its own limit the improvement of product quality
Can not meet the market demand for high-quality board

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The production method of the nano crystallite material in the present embodiment 1, comprises the following steps:

[0030] 1) Molten glass: the raw materials used include the following components, and the weight percentage of each component is: SiO 2 55.7%, CaO 5.2%, MgO 7.3%, Al 2 o 3 6.2%, F 7.3%, Na 2 O 6%, K 2 O 6%, ZnO 2%, B 2 o 3 2%, P 2 o 5 1.5%, Sb 2 o 3 0.8%;

[0031] The raw materials are mixed according to the composition ratio, and then melted at a temperature of 1430°C. The melted molten glass should ensure the homogenization of the components, the uniformity of the temperature and the stability of the flow rate.

[0032] 2) Press the glass substrate: cool the molten glass to 1200°C, control the outflow of the glass liquid, and then press it through a calender to form a glass substrate.

[0033] 3) Carry out nucleation, crystallization, and annealing treatment: firstly perform nucleation treatment at 760°C for 20 minutes, then raise it to ...

Embodiment 2

[0041] The production method of the nano-microcrystalline stone material in the present embodiment 2, comprises the following steps:

[0042] 1) Molten glass: the raw materials used include the following components, and the weight percentage of each component is: SiO 2 51%, CaO 5.8%, MgO 8%, Al 2 o 3 7%, F 6.8%, Na 2 O 5%, K 2 O 7.8%, ZnO 1.5%, B 2 o 3 2.3%, P 2 o 5 1%, Sb 2 o 3 0.8%, MnO 2 1.5%, TiO 2 1.5%; the raw materials are mixed according to the composition ratio, and then melted at a temperature of 1410°C. The melted molten glass must ensure the homogenization of the components, the uniformity of the temperature and the stability of the flow rate.

[0043] 2) Press the glass substrate: cool the molten glass to 1300°C, control the outflow of the glass liquid, and then press it through a calender to form a glass substrate.

[0044] 3) Carry out nucleation, crystallization, and annealing treatment: first perform nucleation treatment at 755°C for 15 min...

Embodiment 3

[0052] The production method of the nano-microcrystalline stone material in the present embodiment 3, comprises the following steps:

[0053] 1) Molten glass: the raw materials used include the following components, and the weight percentage of each component is: SiO 2 65.8%, CaO 4.2%, MgO 6%, Al 2 o 3 5.3%, F 4.2%, Na 2 O 5%, K 2 O 4%, ZnO 0.8%, B 2 o 3 1%, P 2 o 5 1.8%, Sb 2 o 3 0.7%, Cr 2 o 3 1.2%; the raw materials are mixed according to the composition ratio, and then melted at a temperature of 1450°C. The melted molten glass must ensure the homogenization of the components, the uniformity of the temperature and the stability of the flow rate.

[0054] 2) Press the glass substrate: cool the molten glass to 1250°C, control the outflow of the glass liquid, and then press it through a calender to form a glass substrate.

[0055] 3) Carry out nucleation, crystallization and annealing treatment: first perform nucleation treatment at 760°C for 20 minutes, then...

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Abstract

A nano-crystal stone material production method comprises steps as follows. Firstly, glass melt is melted. Used raw materials comprises following components and the weight percent of all components is that: 50-70 percent of SiO2, 4-10 percent of CaO, 5-10 percent of MgO, 5-8 percent of Al2O3, 2-8 percent of Na2O, 0-8 percent of K2O, 1-4 percent of ZnO, 1-2.5 percent of B2O3, 1-2 percent of P2O5 and 0-1 percent of Sb2O3. Glass substrate is pressed. Then, the nucleation, the crystallization and the annealing treatment are implemented. Compared with the prior art, the invention has the beneficial effect that because a product is formed through the one-step forming, the continuous crystallization and the annealing, the production procedures are reduced and the cost and the energy consumption are greatly lowered. The invention also has the advantages of short production cycle, low firing temperature and good product performance.

Description

technical field [0001] The invention relates to a production method of nano-microcrystalline stone material. Background technique [0002] Glass-ceramics is a composite material in which the base glass of a specific composition with a nucleating agent (individually not added) is heat-treated at a certain temperature to become a uniform distribution of microcrystals and glass phases. [0003] The structure, properties and production methods of glass-ceramics are different from those of glass and ceramics. It combines the characteristics of the latter two and has many valuable properties, such as high mechanical strength, good chemical stability and thermal stability, surface hardness and Especially excellent impact resistance and so on. Since the discovery of glass-ceramics, it has been widely used in many fields and developed rapidly. [0004] Glass-ceramics was originally (1953) developed from photosensitive glass, and later (1957) Corning Glass Company of the United Stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B32/02C03C10/00
CPCY02P40/57
Inventor 张伟烈吴征平雷勇斌
Owner SHANTOU SPECIAL ECONOMIC ZONE GUOFEN INDAL
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