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Silicon carbide ceramic membrane and preparation method and application thereof

A technology of silicon carbide and ceramic membranes, applied in ceramic products, chemical instruments and methods, applications, etc., can solve problems such as cracking of membrane layers, energy waste, shedding, etc., achieve energy saving, simple and not cumbersome process flow, and avoid multiple times The effect of transshipment

Active Publication Date: 2021-01-12
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Silicon carbide ceramic membrane material is a kind of rigid ceramic filter material. During the preparation process of existing silicon carbide ceramic membrane material, due to the different firing temperatures of the support body and the membrane layer, the firing temperature of the support body is between 1370 and 1400 ℃, the firing temperature of the film layer is 1250-1270 ℃. Usually, the pre-fired support is covered with a film and then fired again. The two firings not only cause energy waste, but also easily Matching, causing cracking and shedding of the film layer

Method used

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  • Silicon carbide ceramic membrane and preparation method and application thereof
  • Silicon carbide ceramic membrane and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A silicon carbide ceramic membrane, including a support body and a film layer connected to the support body;

[0031] The support body includes the following raw materials in parts by weight: 85 parts of silicon carbide; 6 parts of pore-forming agent; 8 parts of firing binder; 3 parts of forming aid; the pore-forming agent is activated carbon or walnut shell powder ; The molding aid is a thermosetting phenolic resin.

[0032] The film layer includes the following raw materials in parts by weight: 70 parts of corundum sand, 10 parts of firing binder, 10 parts of pore-forming agent, 38 parts of water, 0.1 part of dispersant, and 0.1 part of suspending agent;

[0033] Wherein: sintering binder, in parts by weight, includes: 76 parts of Zhangcun soil, 5 parts of dolomite, 3 parts of glass fiber powder.

[0034] The support body and the film layer are fired once and have several through holes, the diameter of the through holes is 30-33 μm, and the pressure difference on bot...

Embodiment 2

[0036] A silicon carbide ceramic membrane, including a support body and a film layer connected to the support body;

[0037] The support body includes the following raw materials in parts by weight: 92 parts of silicon carbide; 10 parts of pore-forming agent; 15 parts of firing binder; 8 parts of forming aid; the pore-forming agent is activated carbon or walnut shell powder ; The molding aid is a thermosetting phenolic resin.

[0038] The film layer includes the following raw materials in parts by weight: 90 parts of corundum sand, 30 parts of firing binder, 20 parts of pore-forming agent, 50 parts of water, 0.3 part of dispersant, and 0.3 part of suspending agent;

[0039] Wherein: sintering binder, in parts by weight, includes: 96 parts of Zhangcun soil, 16 parts of dolomite, and 16 parts of glass fiber powder.

[0040] Silicon carbide is selected as the support body aggregate, and a sintered binder is added to make it have better high temperature stability and a lower ther...

Embodiment 3

[0043] A silicon carbide ceramic membrane, including a support body and a film layer connected to the support body;

[0044] The support body includes the following raw materials in parts by weight: 90 parts of silicon carbide; 8 parts of pore-forming agent; 12 parts of firing binder; 5 parts of forming aid; the pore-forming agent is activated carbon or walnut shell powder ; The molding aid is a thermosetting phenolic resin.

[0045] The film layer includes the following raw materials in parts by weight: 80 parts of corundum sand, 20 parts of firing binder, 15 parts of pore-forming agent, 42 parts of water, 0.2 part of dispersant, and 0.2 part of suspending agent;

[0046] Wherein: firing binder, by weight parts, comprises: 86 parts of Zhangcun soil, 8 parts of dolomite, 6 parts of glass fiber powder.

[0047] The support body and the film layer are fired once and have several through holes, the diameter of the through holes is 30-33 μm, and the pressure difference on both si...

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Abstract

The invention discloses a silicon carbide ceramic membrane and a preparation method and application thereof and the silicon carbide ceramic membrane. The silicon carbide ceramic membrane comprises a support body and a membrane layer connected with the support body, wherein the support body comprises the following raw materials in parts by weight: 85-92 parts of silicon carbide, 6-10 parts of a pore forming agent, 8-15 parts of a firing binding agent and 3-8 parts of a forming aid, the film layer is prepared from the following raw materials in parts by weight: 70 to 90 parts of emery, 10 to 30parts of a firing binding agent, 10 to 20 parts of a pore forming agent, 38 to 50 parts of water, 0 to 0.3 part of a dispersing agent and 0 to 0.3 part of a suspending agent, wherein the sintering binding agent comprises the following components in parts by weight: 76-96 parts of Zhangcun soil, 5-16 parts of dolomite and 3-16 parts of glass fiber powder. The sintering temperature of the support body is reduced by changing a formula system of the support, and the sintering temperature of the support body and the film layer is controlled within the same temperature interval, so that the film layer and the support body are sintered at one time, and the original twice sintering of the support body and the film layer is replaced.

Description

technical field [0001] The invention relates to the technical field of high-temperature dust removal, in particular to a silicon carbide ceramic membrane and a preparation method and application thereof. Background technique [0002] High-temperature dust removal technology is an international problem. Efficient and practical high-temperature dust removal equipment is still blank at home and abroad. At present, cyclone dust removal, high-temperature electric dust removal, particle layer transition dust removal, rigid ceramic filter dust removal and other fiber filter materials have been used. Rigid ceramic filters are widely used in building materials, waste incineration and other industries due to their high temperature resistance, high dust removal efficiency, high strength, corrosion resistance, and easy cleaning and regeneration. [0003] Silicon carbide ceramic membrane material is a kind of rigid ceramic filter material. During the preparation process of existing silic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/565C04B35/10C04B35/622C04B35/634C04B35/64C04B35/82C04B38/06C04B41/87B01D46/54B01D67/00B01D71/02
CPCC04B35/565C04B35/622C04B35/63476C04B35/64C04B35/82C04B35/10C04B35/62222C04B38/068C04B38/0675C04B41/87C04B41/5037B01D46/543B01D71/02B01D67/0039C04B2235/6562C04B2235/6567C04B2235/349C04B2235/321C04B2235/96C04B35/806C04B38/0054C04B35/803C04B41/5031C04B41/5027C04B41/5022C04B41/4539C04B41/4543C04B41/4582C04B41/4578C04B41/0072
Inventor 张久美程之强赵世凯薛友祥宋涛王重海唐钰栋王响徐丹丹马天双
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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