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Preparation method of Ca-Mg-Al-Si porous microcrystalline glass

A porous glass-ceramic and glass technology, which is applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of low compressive and flexural strength, low crystallization rate, etc., and achieve low cost and good pore size distribution. Novel effect of tone and method

Inactive Publication Date: 2019-05-31
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to add additives and nucleating agents in the manufacturing process, and the crystallization rate is low, and the compressive and flexural strengths are small. It is mainly used as a thermal insulation component of composite wall materials and cannot be used as a filter material.

Method used

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  • Preparation method of Ca-Mg-Al-Si porous microcrystalline glass
  • Preparation method of Ca-Mg-Al-Si porous microcrystalline glass
  • Preparation method of Ca-Mg-Al-Si porous microcrystalline glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) According to the following table formula ingredients:

[0036]

[0037] Among them, MgO, SiO 2 , CaO, Na 2 CO 3 , Na 2 B 4 O 7 , Al 2 O 3 , Fe 2 O 3 The raw material grade is experimental grade analytical grade; the stainless steel slag is the chromium-containing stainless steel slag produced by Baotou Baotou Iron and Steel (Group) Co., Ltd. during the smelting process, and its components include: 21.25% MgO, 37.88% SiO 2 , 2.95% CaO, 0.26% Na 2 O, 0.22% K 2 O, 29.02% Al 2 O 3 , 2.75% TFe, 0.10% CaF 2 , 5.76% Cr 2 O 3 .

[0038] The raw materials are uniformly mixed and dried by wet ball milling to obtain a mixture. The ball milling medium is anhydrous ethanol, and the mass ratio of ball, material and medium is 1:1:1.

[0039] (2) Put the mixture into a crucible, heat it up to 1450° C. in a muffle furnace for 9 hours, and keep it for 3 hours, then take it out and pour it into cold water for water quenching to obtain water-quenched glass.

[0040] ...

Embodiment 2

[0045] (1) According to the following table formula ingredients:

[0046]

[0047] Among them, MgO, SiO 2 , CaO, Na 2 CO 3 , Na 2 B 4 O 7 , Al 2 O 3 , Fe 2 O 3 The raw material grade is experimental grade analytical grade; the stainless steel slag is the chromium-containing stainless steel slag produced by Baotou Baotou Iron and Steel (Group) Co., Ltd. during the smelting process, and its components include: 21.25% MgO, 37.88% SiO 2 , 2.95% CaO, 0.26% Na 2 O, 0.22% K 2 O, 29.02% Al 2 O 3 , 2.75% TFe, 0.10% CaF 2 , 5.76% Cr 2 O 3 .

[0048] The raw materials are uniformly mixed and dried by wet ball milling to obtain a mixture. The ball milling medium is anhydrous ethanol, and the mass ratio of ball, material and medium is 1:1:1.

[0049] (2) Put the mixture into a crucible, heat it up to 1450° C. in a muffle furnace for 9 hours, and keep it for 4 hours, then take it out and pour it into cold water for water quenching to obtain water-quenched glass.

[0050...

Embodiment 3

[0055] (1) According to the following table formula ingredients:

[0056]

[0057] Among them, MgO, SiO 2 , CaO, Na 2 CO 3 , Na 2 B 4 O 7 , Al 2 O 3 , Fe 2 O 3 The raw material grade is experimental grade analytical grade; the stainless steel slag is the chromium-containing stainless steel slag produced by Baotou Baotou Iron and Steel (Group) Co., Ltd. during the smelting process, and its components include: 21.25% MgO, 37.88% SiO 2 , 2.95% CaO, 0.26% Na 2 O, 0.22% K 2 O, 29.02% Al 2 O 3 , 2.75% TFe, 0.10% CaF 2 , 5.76% Cr 2 O 3 .

[0058] The raw materials are uniformly mixed and dried by wet ball milling to obtain a mixture. The ball milling medium is anhydrous ethanol, and the mass ratio of ball, material and medium is 1:1:1.

[0059] (2) Put the mixture into a crucible, heat it up to 1450° C. in a muffle furnace for 9 hours, and keep it for 5 hours, then take it out and pour it into cold water for water quenching to obtain water-quenched glass.

[0060...

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Abstract

The invention discloses a preparation method of a Ca-Mg-Al-Si porous microcrystalline glass, and belongs to the field of microcrystalline glass filter materials. The preparation method comprises following steps: weighing MgO, SiO2, CaO, Na2CO3, Na2B4O7, Al2O3, Fe2O3, and stainless steel slag, evenly mixing, adding the mixture into a crucible, placing the crucible in a muffle furnace, maintaining atemperature of 1400 to 1500 for 3 to 5 hours; taking out the mixture, quenching the mixture by cold water to obtain water quenched glass; breaking the water quenched glass, ball-milling the glass, fully mixing the glass with NaCl, placing the mixture in an electric spark plasma sintering furnace, carrying out hot pressed sintering for 1 to 3 minutes at a constant temperature of 650 to 725 DEG C under a pressure of 45 to 50 kN; placing sintered and moulded Ca-Mg-Al-Si porous microcrystalline glass into water, washing, and soaking to obtain the Ca-Mg-Al-Si porous microcrystalline glass. The provided preparation method can obtain the porous microcrystalline glass for different filter objects, the porosity and pore size of the microcrystalline glass are adjustable, the strength is high, and the microcrystalline glass has communicated pores.

Description

technical field [0001] The present invention relates to a kind of industrial waste resource utilization and can be used for filter, catalytic carrier C a -The preparation method of Mg-Al-Si series porous glass-ceramic belongs to the field of glass-ceramic filter material. Background technique [0002] Porous materials generally have the advantages of low relative density, high specific strength, high specific surface area, light weight, sound insulation, heat insulation, and good permeability. Applied in industry. At present, the most widely used filter materials mainly include ceramic filter materials (artificial filter materials) and natural mineral filter materials. Ceramic filter materials include foamed ceramics, hollow ball materials, honeycomb ceramics, etc.; mineral filter materials include diatomite, zeolite, pumice, expanded perlite, and porous materials such as bentonite, kaolinite, and sepiolite. Porous glass-ceramic is a new type of green environmental protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/04C03C6/10C03B19/06
Inventor 欧阳顺利李保卫张雪峰贾晓林张宇轩
Owner INNER MONGOLIA UNIV OF SCI & TECH
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