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Method for preparing calcium-aluminum-silicon (CAS) glass ceramics by quickly sintering waste lamp tube glass

A technology of rapid sintering and glass-ceramics, which is applied in the field of preparing calcium-aluminum-silicate glass-ceramics to achieve the effects of large specific surface area, low sintering temperature and low raw material cost

Inactive Publication Date: 2012-09-19
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN 201110044710.0 discloses a harmless treatment method for mercury-containing lamp tubes, and patent CN 200910040727.1 discloses a recycling method for waste lamp tubes. The existing treatment methods only realize the simple recycling and harmless treatment of waste lamp tubes, and do not Lamp glass for efficient use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] waste lamp glass meal As the main raw material, use conventional sintering process Preparation of CAS glass-ceramics:

[0019] (1) Preparation of waste lamp glass powder: evenly melt the waste lamp glass, then undergo water quenching, grinding and sieving to obtain glass powder, the average particle size of the powder is 109 mm ;

[0020] (2) Ingredients: waste lamp glass powder 82% + quicklime 18% (mass percentage);

[0021] (3) Mixing: Grind and mix the mixed powder in a ceramic mortar, and then pass through an 80-mesh sieve to obtain a uniformly mixed powder;

[0022] (4) Molding: Pour the mixed powder into the mold and compact it under 60 MPa pressure;

[0023] (5) Sample sintering: put the formed sample into muffle furnace in 10 ℃ / min The heating rate is raised to 1050°C, and the temperature is kept 180 minutes Then cool to room temperature with the furnace;

[0024] The volume percentage of crystalline phase in the CAS glass-ceramics prepared by t...

Embodiment 2

[0026] waste lamp glass Micropowder As the main raw material, use Rapid Sintering Process Preparation of CAS glass-ceramics:

[0027] (1) Preparation of waste lamp glass powder: evenly melt the waste lamp glass, then water quench, grind and sieve to obtain glass powder, the average particle size of the powder is 16 mm ;

[0028] (2) Ingredients: waste lamp glass powder 82% + quicklime 18% (mass percentage);

[0029] (3) Mixing: Use alumina grinding balls to mechanically grind and mix the mixed powder in a planetary ball mill for 60 minutes, and then pass through a 325-mesh sieve to obtain a uniformly mixed powder;

[0030] (4) Molding: Pour the mixed powder into the mold and compact it under 60 MPa pressure;

[0031] (5) Sample sintering: put the formed sample into Rapid heating furnace in 50 ℃ / min The heating rate is raised to 1050°C, and the temperature is kept 30 minutes Then cool to room temperature with the furnace;

[0032] The volume percentage of crys...

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Abstract

The invention discloses a method for preparing calcium-aluminum-silicon (CAS) glass ceramics by quickly sintering waste lamp tube glass, belonging to the building decorative material field. The method comprises the following steps of: (1), melting, water-quenching, grinding and screening the waste lamp tube glass to obtain glass powder; (2), adding proper quick lime to satisfy CAS glass ceramics component requirement; and (3), pressing and molding the uniformly-mixed powder material and sintering the powder material in a quick warming furnace to obtain the CAS glass ceramics. By taking the waste lamp tube glass powder as a main material and using the quick sintering process to process the CAS glass ceramics, the method has the characteristics of low material cost, low sintering temperature, short sintering time and high bending strength of the bending strength, and the like, achieves environment protection, energy saving, high added value and large-scale recycling of the waste lamp tube glass, and has notable economic and social benefits.

Description

technical field [0001] The invention relates to a method for preparing calcium-aluminum-silicate glass-ceramics, in particular to a method for preparing calcium-aluminum-silicate glass-ceramics by rapid sintering of waste lamp tube glass. Background technique [0002] Calcium-aluminum-silicate (CAS) glass-ceramic has excellent mechanical strength, chemical corrosion resistance and unique texture, and is known as a new building decoration material in the 21st century. Because CAS glass-ceramic uses relatively expensive feldspar raw materials, and the production energy consumption is high, the product price remains high (200-300 yuan / square meter), which is difficult for ordinary consumers to accept. Therefore, the reduction of architectural glass-ceramic Raw materials and production costs have positive implications for its marketing. At present, industrial waste glass, ash, slag, steel slag and other solid wastes have been used in the preparation or production of architectur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/14C03C6/02
Inventor 卢金山韩业创谢希梁若涯徐接旺
Owner NANCHANG HANGKONG UNIVERSITY
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