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Method for preparing crystallized glass by directly sintering albite ore taken as raw material

A technology of glass-ceramics and albite, which is applied in the field of direct sintering to prepare glass-ceramics, can solve problems such as reduction, and achieve the effects of abundant resources, low production cost, and low heat treatment temperature

Inactive Publication Date: 2013-11-27
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Then Zhou Xuezhong from Hunan Institute of Technology disclosed in "Jiangsu Ceramics" that using Hengshan albite ore as a raw material to prepare glass-ceramics whose main crystal phase is β-wollastonite, its melting dropped below 1300°C, although the melting temperature Compared with the use of traditional raw materials, it is slightly lower, but still higher than the theoretical melting point of albite by 100~200°C

Method used

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  • Method for preparing crystallized glass by directly sintering albite ore taken as raw material
  • Method for preparing crystallized glass by directly sintering albite ore taken as raw material
  • Method for preparing crystallized glass by directly sintering albite ore taken as raw material

Examples

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Effect test

Embodiment 1

[0020] A method of directly sintering albite ore as a raw material to prepare glass-ceramics, which includes the following steps: (1) preparing albite powder: crushing albite ore that meets the above component requirements, and then using a vibration mill to The prototype was crushed to below 200 mesh to obtain albite powder; (2) Compression molding: Grind and mix 15g of albite powder with 1mL of polyvinyl alcohol solution with a mass fraction of 5wt%, and hold the pressure at 30MPa for 4 minutes to obtain a blank (3) Heat treatment: Put the green body into a high-temperature furnace and heat it up to 1000°C at a heating rate of 2°C / min; keep it warm for 6 hours; then cool it down to 500°C at a cooling rate of 3°C / min; finally cool with the furnace , to obtain glass-ceramics.

[0021] figure 1 It is the X-ray diffraction pattern of the glass-ceramics prepared in Example 1. The peaks in the figure correspond to the characteristic peaks of albite, which proves that the main cr...

Embodiment 2

[0024] A method of directly sintering albite ore as a raw material to prepare glass-ceramics, which includes the following steps: (1) preparing albite powder: crushing albite ore that meets the above component requirements, and then using a vibration mill to The prototype was crushed to below 200 mesh to obtain albite powder; (2) Compression molding: 10g of albite powder and 0.5mL of polyvinyl alcohol solution with a mass fraction of 5wt% were ground and mixed evenly, and the pressure was maintained at 20MPa for 2 minutes to obtain Green body; (3) Heat treatment: Put the green body into a high-temperature furnace and heat it up to 1100°C at a heating rate of 3°C / min; keep it warm for 4 hours; then cool it down to 600°C at a cooling rate of 3°C / min; Cool to obtain glass-ceramics.

[0025] figure 2 It is the X-ray diffraction pattern of the glass-ceramic prepared in embodiment 2. The peaks in the figure correspond to the characteristic peaks of albite, which proves that the m...

Embodiment 3

[0028] A method of directly sintering albite ore as a raw material to prepare glass-ceramics, which includes the following steps: (1) preparing albite powder: crushing albite ore that meets the above component requirements, and then using a vibration mill to The prototype was crushed to below 200 mesh to obtain albite powder; (2) Compression molding: 10g of albite powder and 0.5mL of polyvinyl alcohol solution with a mass fraction of 5wt% were ground and mixed evenly, and the pressure was maintained at 10MPa for 4 minutes to obtain Green body; (3) heat treatment: put the green body into a high-temperature furnace and heat it up to 1200°C at a heating rate of 5°C / min; keep it warm for 2 hours; then cool it down to 700°C at a cooling rate of 3°C / min; Cool to obtain glass-ceramics.

[0029] image 3 It is the X-ray diffraction pattern of the glass ceramics prepared in Example 3. The peaks in the figure correspond to the characteristic peaks of albite, which proves that the main...

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Abstract

The invention provides a method for preparing crystallized glass by directly sintering albite ore taken as raw material. The method is characterized by comprising the following steps: firstly preparing albite powder, secondly, performing pressure moulding, thirdly, performing heat treating, adding moulding bodies into a high temperature furnace, raising the temperature of the high temperature furnace to 1150 to 1300 DEG C, ensuring that the temperature raise speed is 2 to 5 DEG C per minute, keeping the temperature for 2 to 6 hours, reducing the temperature to 500 to 700 DEG C, ensuring that the rate of temperature fall is 3 DEG C per minute, and finally cooling the moulding bodies in the furnace, so as to obtain the crystallized glass. The method takes the albite ore as raw material to prepare the crystallized glass by directly sintering the albite ore, the utility ratio of the albite ore is high, the technology is simple, the heat treatment temperature is low, the energy consumption is low, and the crystallized glass prepared has high strength and can meet different application requirements.

Description

technical field [0001] The invention relates to a method for preparing glass-ceramics, in particular to a method for preparing glass-ceramics by directly sintering albite ore as a raw material. Background technique [0002] Glass-ceramic, also known as glass-ceramic, is a ceramic material composed of glass phase and tiny crystal phase. Glass-ceramics has many excellent properties, such as excellent electrical insulation properties, small dielectric loss, stable dielectric constant, high mechanical strength, adjustable thermal expansion coefficient in a wide range, and stable chemical properties. Moreover, glass-ceramics with special optical, electrical, magnetic, thermal and biological functions can be obtained through the design of chemical composition. The production of traditional glass-ceramics mainly uses chemical raw materials, such as alumina, sodium carbonate, silicon dioxide and soda ash, etc., and the cost of raw materials is high. Moreover, the melting temperatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/10C03B32/02
Inventor 李珍吴剑芳冯安生李飞黄焱球
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)