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Ceramic fiber tube and preparation method thereof

A technology of ceramic fiber and ceramic fiber paper, applied in the field of ceramic fiber, can solve the problems of complicated preparation method, high cost, high bulk density of ceramic fiber tube, etc., and achieve the effects of simple preparation process, low cost and small resistance

Pending Publication Date: 2021-05-14
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a preparation method of a ceramic fiber tube and its preparation method. The technical problem to be solved is that the preparation method of the existing ceramic fiber tube is complex in operation and high in cost, and the prepared ceramic fiber tube is high volume density

Method used

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  • Ceramic fiber tube and preparation method thereof
  • Ceramic fiber tube and preparation method thereof

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preparation example Construction

[0040] One embodiment of the present invention proposes a method for preparing a ceramic fiber tube, which specifically includes the following steps:

[0041] (1) soak the first ceramic fiber material into the inorganic binder; paste one end of the soaked first ceramic fiber material on the surface of the mandrel, rotate the mandrel, wrap the first ceramic fiber material on the surface of the mandrel, and The surface of the mandrel forms a supporting layer; the first ceramic fiber material is ceramic fiber paper or ceramic fiber felt;

[0042] In this step (1), the core mold is selected to have a certain hardness and easy to release the material, such as stainless steel or plastic, and the shape is a cylinder, and the size of the cylinder is selected or manufactured according to needs.

[0043] In this step (1), when winding, it is necessary to ensure that the interfaces at both ends are aligned to ensure that the circumference of the obtained ceramic fiber tube has a support ...

Embodiment 1

[0080] (1) soaking the ceramic fiber mat of the supporting layer with an inorganic binder; the inorganic binder is silica sol, and the solid content is 30wt%;

[0081] (2) Paste one end of the soaked ceramic fiber felt on the surface of the mandrel, rotate the mandrel, wrap the ceramic fiber felt on the surface of the mandrel, wrap two layers, align the interfaces, and obtain the first support layer;

[0082] (3) Immerse the fiber woven grid into the inorganic binder and soak it;

[0083] (4) Wrap the wetted fiber woven mesh on the surface of the support tube to form a reinforcement layer.

[0084] (5) Wrap a layer of transition layer in the same way outside the reinforcement layer, and finally wrap a layer of filter layer, and the seams of each layer are staggered.

[0085] (6) Add a flange to one end of the ceramic fiber tube and seal the other end, dry the ceramic fiber tube at a temperature of 100°C for 3 hours in microwave, and remove the ceramic fiber tube from the mand...

Embodiment 2

[0090] (1) soaking the ceramic fiber paper of the support layer with an inorganic binder; the inorganic binder is aluminum sol, and the solid content is 30wt%;

[0091] (2) Paste one end of the soaked ceramic fiber paper on the surface of the mandrel, rotate the mandrel, wrap the ceramic fiber paper on the surface of the mandrel, wrap one layer, align the interface, and obtain the first support layer;

[0092] (3) Immerse the fiber woven grid into the inorganic binder and soak it;

[0093] (4) Wrap the wetted fiber woven mesh on the surface of the support tube to form a reinforcement layer.

[0094] (5) Wrap a layer of transition layer in the same way outside the reinforcement layer, and finally wrap a layer of filter layer, and the seams of each layer are staggered.

[0095] (6) Add a flange to one end of the ceramic fiber tube, and seal the other end. Dry the ceramic fiber tube at a temperature of 80°C for 3.5 hours in microwave. After curing, remove the ceramic fiber tube fr...

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Abstract

The invention relates to a ceramic fiber tube and a preparation method thereof. The preparation method comprises the following steps: soaking a first ceramic fiber material in an inorganic binder; pasting one end of the soaked first ceramic fiber material on the surface of a core mold, and forming a supporting layer on the surface of the core mold through winding; soaking the fiber woven grid with an inorganic binder; attaching one end of the soaked fiber woven grid to the surface of the supporting layer, and forming a reinforcing layer on the surface of the supporting layer through winding; soaking a second ceramic fiber material in the inorganic binder; adhering one end of the soaked second ceramic fiber material to the surface of the reinforcing layer, and performing winding to form a filtering layer on the surface of the reinforcing layer, wherein the average pore size of the first ceramic fiber material is larger than that of the second ceramic fiber material; and performing drying and demolding to obtain the ceramic fiber tube. The ceramic fiber tube is controllable in aperture and thickness, high in filtering precision, small in resistance and low in energy consumption.

Description

technical field [0001] The invention relates to the technical field of ceramic fibers, in particular to a ceramic fiber tube and a preparation method thereof. Background technique [0002] Ceramic fiber filtration technology is one of the fastest-growing 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 intercept suspended solids, and has a better 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 ° C environment; compared with porous ceramic and metal filter materials, fiber filter materials do not need sintering, low resistance, energy saving, and chemical stability And good thermal shock resistance. The excellent performance of ceramic fiber makes it widely used in high-temperature flue gas filtration...

Claims

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Application Information

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IPC IPC(8): B01D39/20
CPCB01D39/2082
Inventor 梁海龙陈鑫吴彦霞张世超陈玉峰胡利明
Owner CHINA BUILDING MATERIALS ACAD
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