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Inorganic ceramic membrane support material and preparation method thereof

An inorganic ceramic membrane and support technology, which is applied in ceramic products, chemical instruments and methods, membrane technology, etc., can solve the problems of high cost, high sintering temperature, and permeability of ceramic membranes that need to be further improved.

Active Publication Date: 2021-06-08
江西陶瓷工艺美术职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commercialized ceramic membrane support materials are mostly made of high-purity Al2O3 as raw materials and fired at higher than 1700 °C, and its microstructure is Closed Al2O3 balls with spherical particles have high strength, but the permeability needs to be further improved. Temperature and high-purity raw materials are one of the main reasons for the high cost of ceramic membranes

Method used

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  • Inorganic ceramic membrane support material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Mono-like fiber inlet forming spherical shape particle inorganic ceramic membrane material formed by open air holes

[0028] (1) 50 g of charcoal powder is placed in a pellet, and the spray concentration is 10 ml of a concentration of 5% PVA solution, and the balloon is started to obtain a charcoal powder ball of different particle sizes;

[0029] (2) According to the weight parts: 35 parts of the desert, 65 parts of aluminum hydroxide, 4 different vanadium dioxide, 3 of the aluminum fluoride, and mix the above raw materials.

[0030] (3) Place the core 20g made in 1 in the disc, 4 ml of the PVA solution having a concentration of 5%, and continuously stir, followed by a powder 20g of the medium mixing, and continuously stirred, Get mullite precursor pseudo-spherical particles;

[0031] (4) The pseudo-spherical particles prepared 3 were warmed by room temperature to 400 ° C for 60 min, and at the highest temperature insulation for 60 min, then rose to 1200 ~ 1350 °...

Embodiment 2

[0034] Example 2 Mono-like fiber inlet having an open air hole is formed of spherical shape particle inorganic ceramic membrane material

[0035] (1) 50 g of charcoal powder is placed in a pellet, and the spray concentration is 10 ml of a concentration of 5% PVA solution, and the balloon is started to obtain a charcoal powder ball of different particle sizes;

[0036] (2) According to the weight of the material: 45 parts of the desert, 55 parts of aluminum hydroxide, 4 different vanadium dioxide, 3 of the fluorinated aluminum, and mix the above raw materials well;

[0037] (3) Place the core 20g made in 1 in the disc, 4 ml of the PVA solution having a concentration of 5%, and continuously stir, followed by a powder 20g of the medium mixing, and continuously stirred, Get mullite precursor pseudo-spherical particles;

[0038] (4) The pseudo-spherical particles prepared 3 were warmed by room temperature to 400 ° C for 60 min, and at the highest temperature insulation for 60 min, then...

Embodiment 3

[0041] Example 3 Mono-like fiber inlet having open air holes, type spherical shape particle inorganic ceramic membrane material

[0042] (1) 50 g of charcoal powder is placed in a pellet, and the spray concentration is 10 ml of a concentration of 5% PVA solution, and the balloon is started to obtain a charcoal powder ball of different particle sizes;

[0043] (2) According to the weight of the material: 55 parts of the desert, 45 parts of aluminum hydroxide, 4 different vanadium dioxide, 3 of the aluminum fluoride, and mix the above raw materials well;

[0044] (3) Place the core 20g made in 1 in the disc, 4 ml of the PVA solution having a concentration of 5%, and continuously stir, followed by a powder 20g of the medium mixing, and continuously stirred, Get mullite precursor pseudo-spherical particles;

[0045] (4) The pseudo-spherical particles prepared 3 were warmed by room temperature to 400 ° C for 60 min, and at the highest temperature insulation for 60 min, then rose to 120...

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Abstract

The invention discloses an inorganic ceramic membrane support material and a preparation method thereof. The preparation method comprises the steps: forming a ball core in a ball forming instrument in advance by charcoal powder, spraying a PVA solution, adding evenly-mixed powder, and obtaining mullite precursor pseudo-spherical particles with the spherical appearance; performing sintering to obtain loose and porous mullite fiber in-situ formed sphere-like particles; taking the material as a raw material, adding fly ash and a binder, and after stirring and aging, performing extrusion molding and firing to obtain the material. Spherical-like particles formed by mullite fibers with open pores in situ are innovatively prepared and applied to an inorganic ceramic membrane as a support material, so the water permeability of the support material is greatly improved; the current situation that a commercial ceramic membrane supporting body material is closed spherical aluminum oxide particles is expected to be replaced, the effect of promoting environmental protection is achieved by using the desert yellow sand to prepare the ceramic material, resources are effectively saved, and great economic and social values are achieved.

Description

Technical field [0001] The present invention relates to the technical field of inorganic ceramic membrane support material, and in particular, is a inorganic ceramic film support material and a preparation method thereof. Background technique [0002] The porous ceramic film is a porous ceramic material having a gradient hole structure, typically consisting of a support body, a transition layer, and a separate a top film which are gradually reduced by the aperture and thickness. As the support, except for the necessary mechanical strength to be provided for the top film, excellent permeability and alkali corrosion resistance. Currently commercial ceramic film support material uses high purity Al 2 O 3 For the raw material, it is finated above 1700 ° C, which is a closed Al1, which has a spherical particle. 2 O 3 Ball, high intensity, but penetration performance is still to be further improved, and the high-purity of the commercialized support and high purity raw materials are the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/622C04B35/626C04B38/08B01D69/10
CPCC04B35/185C04B35/62204C04B35/62605C04B35/62645C04B35/62695C04B38/085B01D69/10C04B2235/3418C04B2235/3218C04B2235/3217C04B2235/3239C04B2235/656C04B2235/6567C04B38/08Y02P40/60
Inventor 胡其国
Owner 江西陶瓷工艺美术职业技术学院
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