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A kind of preparation method of high temperature resistant ceramic fiber filter tube

A technology of high temperature-resistant ceramics and filter tubes, applied in the field of refractory fibers, can solve the problems of poor ash cleaning, high resistance, and high production costs, and achieve the effects of uniform fiber layers, uniform pore size distribution, and improved strength.

Active Publication Date: 2022-06-07
江苏赛图新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But the preparation method of the ceramic fiber filter material in the prior art, some need sintering, need to dry after forming and just can demould, the pore size distribution of filter tube is not uniform, the fiber distribution layer sense in wall thickness direction is not clear, and filter tube wall is made of The inside-out shaved hole structure is not obvious, the resistance is high, the reproducibility of dust cleaning is poor, the production process steps are many, and the production cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] According to the mass fraction of raw materials, its components include:

[0040] 800 parts water, 8 parts fiber,

[0041] 150 parts of organic binder, 400 parts of inorganic binder,

[0042] 0.5 parts of additives, 3 parts of modifiers,

[0043] The water is tap water;

[0044] The fiber is a mixture of alumina fiber and zirconium-containing fiber;

[0045] Described organic binder is CMC (carboxymethyl cellulose sodium);

[0046] The inorganic binder is a mixture of aluminum sol and zirconium sol;

[0047] Described additive is the mixing of bentonite and kaolin;

[0048] The modifier is one or a mixture of polymeric polyacrylamides.

[0049] The specific steps of a preparation method of a high temperature resistant ceramic fiber filter tube are:

[0050] (1) Fiber slag removal and modification: Disperse and stir the fibers in water (stirring speed 240-280r / min, stirring time 3-5min), filter and remove slag, add modifiers and additives and stir again (stirring ...

Embodiment 2

[0057] A high temperature resistant ceramic fiber filter tube, its components according to mass fraction include:

[0058] 1000 parts water, 12 parts fiber,

[0059] 200 parts of organic binder, 500 parts of inorganic binder,

[0060] 3.5 parts of additives, 10 parts of modifiers,

[0061] The water is deionized water;

[0062] The fiber is a mixture of aluminum silicate fiber and alumina fiber;

[0063] Described organic binder is PVA (polyvinyl alcohol);

[0064] The inorganic binder is a silicon-alumina composite sol;

[0065] The additives are bentonite and kaolin;

[0066] The modifier is polyaluminum sulfate.

[0067] The preparation steps of the present invention are specifically:

[0068] (1) Fiber slag removal and modification: Disperse and stir the fibers in water (stirring speed 260-280r / min, stirring time 3-5min), filter and remove slag, add modifiers and additives and stir again (stirring speed 500 rpm) -600r / min, stirring time 12-15min);

[0069] (2) Dry...

Embodiment 3

[0075] 800 parts water, 8 parts fiber,

[0076] 200 parts of organic binder, 450 parts of inorganic binder,

[0077] 2 parts of additives, 5 parts of modifiers,

[0078] The water is pure water;

[0079] The fiber is a mixture of aluminum silicate fiber and zirconium-containing fiber;

[0080] The organic binder is a mixture of CMC (sodium carboxymethyl cellulose) and PVA (polyvinyl alcohol);

[0081] The inorganic binder is aluminum sol;

[0082] The additive is alumina;

[0083] The modifier is a mixture of polymeric aluminum sulfate and polymeric polyacrylamide.

[0084] The preparation steps of the present invention are specifically:

[0085] (1) Fiber slag removal and modification: Disperse and stir the fibers in water (stirring speed 250-270r / min, stirring time 3-5min), filter and remove slag, add modifiers and additives and stir again (stirring speed 500 rpm) -600r / min, stirring time 10-15min);

[0086] (2) Dry the slag-removed and modified fibers, the drying te...

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Abstract

The invention relates to the field of refractory fibers, in particular to a method for preparing a high-temperature-resistant ceramic fiber filter tube. A method for preparing a high-temperature-resistant ceramic fiber filter tube, comprising: (1) dispersing fibers in water, filtering, adding modifiers and additives and stirring; (2) drying the slag-removed and modified fibers; (3) Add water to the organic binder to make an organic binder solution, mix the prepared organic binder solution, inorganic binder and water evenly and divide it into two parts A and B, mix the mixed binder of part A with the fiber uniform to obtain mixture a, add additives to mixture a, and mix uniformly to obtain mixture b; (4) inject mixture b and part B of the mixed binder into the mold for molding, and demould to obtain a semi-finished product. (5) Drying the semi-finished product in step (4) to obtain a product. The ceramic fiber filter tube prepared by the preparation method has simple process, uniform wall thickness of the prepared filter tube, and long-term high temperature resistance up to 1400 DEG C.

Description

technical field [0001] The invention relates to the field of refractory fibers, in particular to a preparation method of a high temperature resistant ceramic fiber filter tube. Background technique [0002] Ceramic fiber filtration technology is one of the fastest developing filtration technologies in recent years. Compared with the traditional granular filter material, the fiber filter material has a larger specific surface area, has a larger interface adsorption and can retain suspended solids, and has a good filtering effect. Compared with traditional filter materials such as cloth bags, fiber filter materials can be used in high temperature or even ultra-high temperature (≤1400℃) environments; compared with porous ceramic and metal filter materials, fiber filter materials do not require sintering, have low resistance, save energy, chemical Good stability and thermal shock resistance. The excellent properties of ceramic fiber make it widely used in air purification, hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 茆福忠
Owner 江苏赛图新材料科技有限公司
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