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Microcrystal glass prepared through microwave heating and method thereof

A glass-ceramic and microwave heating technology, which is applied in the field of glass-ceramic preparation, can solve the problems of unfavorable environmental protection, high raw material cost, energy waste, etc., and achieve the effects of superior performance, simple process, and environmental pollution

Inactive Publication Date: 2012-05-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems of high raw material cost, low yield, serious energy waste, and unfavorable environmental protection in the preparation of glass-ceramics by the existing method, and provides a method for preparing glass-ceramics by microwave heating

Method used

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  • Microcrystal glass prepared through microwave heating and method thereof
  • Microcrystal glass prepared through microwave heating and method thereof
  • Microcrystal glass prepared through microwave heating and method thereof

Examples

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specific Embodiment approach 1

[0020] Specific Embodiment 1: This embodiment provides a glass-ceramic prepared by microwave heating. This glass-ceramic consists of 50-90 parts by weight of sludge pyrolysis ash, 10-30 parts of calcium oxide, 1-20 parts Silicon dioxide and organic solvents are prepared by microwave heating.

[0021] The mass ratio of the sludge pyrolysis ash and the organic solvent described in this embodiment is 1: (1-5).

[0022] This embodiment provides a good utilization method for the wet sludge discharged from the sewage treatment plant, which is conducive to solving environmental pollution, realizing resource utilization, and reducing raw material costs;

[0023] Compared with the glass-ceramics prepared by the traditional method, the performance of the glass-ceramics prepared in this embodiment is superior, the microhardness is increased by 0.3-0.9GPa, the bending strength is increased by 4-7MPa, and the glass-ceramics prepared by the present invention has no Cracked, specular luster...

specific Embodiment approach 2

[0024] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the sludge pyrolysis ash is pyrolyzed by using wet sludge discharged from a sewage treatment plant under the anaerobic condition of microwave heating and then pulverized, It is made by sieving, wherein the sludge pyrolysis ash contains 45% to 50% SiO by mass fraction 2 , 15%~20%Al 2 o 3 , 2% ~ 3% MgO, 4% ~ 8% CaO, 1% ~ 3% K 2 O, 0.5%~2%Na 2 O, 0.0001%~1%TiO 2 , 5% ~ 9% Fe 2 o 3 and 5%~9%P 2 o 5 . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the organic solvent is ethanol, propanol, acetic acid, propionic acid, acetone, butanone, diethyl ether or propyl ether. Others are the same as in the first or second embodiment.

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Abstract

The invention provides microcrystal glass prepared through microwave heating and a method thereof, which relate to microcrystal glass and a preparation method thereof and aim at solving the problems that the existing microcrystal glass preparation method has high raw material cost, the finished product rate is low, the energy source waste is serious, and in addition, the environment protection is unfavorably realized. The microcrystal glass prepared through microwave heating is prepared from 50 to 90 weight parts of sludge pyrolysis ash, 10 to 30 weight parts of calcium oxide, 1 to 20 weight parts of silicon dioxide and organic solvents through microwave heating or is prepared from 50 to 90 weight parts of sludge pyrolysis ash, 10 to 25 weight parts of cullet, 15 to 25 weight parts of calcium dioxide and organic solvents through microwave heating. The preparation method comprises the following steps of: 1, sludge pyrolysis ash preparation; 2, forming; 3, microwave sintering; and 4, microwave nucleation crystallization. The method is mainly used for preparing the microcrystal glass.

Description

technical field [0001] The invention relates to a preparation method of glass-ceramics. Background technique [0002] Microcrystalline glass, also known as microcrystalline jade or ceramic glass, is a new type of material developed by comprehensive glass and ceramic technology. It has dual characteristics of glass and ceramics, such as low expansion coefficient and high mechanical strength (the average microhardness is 6.5GPa, the average bending strength is 60MPa), excellent electrical insulation performance, small dielectric loss, wear resistance, corrosion resistance, good thermal stability, etc. [0003] Municipal sewage sludge is an inevitable product of urban sewage treatment. With the increase of urban sewage treatment volume year by year, the amount of sludge produced is also increasing day by day. Sewage sludge contains a large amount of heavy metals and pathogenic bacteria, so the treatment of sewage sludge is particularly important. important. Sludge pyrolysis t...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03B32/02
Inventor 田禹陈东东左薇
Owner HARBIN INST OF TECH
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