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High-temperature-resistant ceramic fiber tube

A technology of high temperature-resistant ceramics and fiber tubes, applied in the field of refractory fibers, can solve the problems of unclear fiber distribution, uneven distribution of pore diameters of filter tubes, and inconspicuous structure of filter tube walls, so as to achieve uniform fiber density and reduce production. Reasonable effect of cost and deployment selection

Inactive Publication Date: 2019-04-23
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

[0004] However, some of the ceramic fiber filter materials in the prior art need to be sintered, and they need to be dried before they can be demolded after molding. The pore size distribution of the filter tube is not uniform, the layering of the fiber distribution in the wall thickness direction is not clear, and the filter tube wall is shaved from the inside to the outside. The pore structure is not obvious, the resistance is high, the dust removal is poor, the production process steps are many, and the production cost is high; some are only used for simple filtration, and cannot be prepared into large-scale chemical industry waste gas treatment to meet ultra-low dust emission requirements ceramic fiber filter material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The components of the raw materials by mass fraction include:

[0036] 800 parts of water, 8 parts of fiber,

[0037] 150 parts of organic binder, 400 parts of inorganic binder,

[0038] 0.5 parts of additives, 3 parts of modifiers,

[0039] Described water is tap water;

[0040] The fibers are a mixture of alumina fibers and zirconium-containing fibers;

[0041] Described organic binder is CMC (sodium carboxymethyl cellulose);

[0042] The inorganic binder is a mixture of aluminum sol and zirconium sol;

[0043] The additive is a mixture of bentonite and kaolin;

[0044] The modifier is one or a mixture of polyacrylamides.

[0045] The specific steps of a preparation method of a high-temperature-resistant ceramic fiber filter tube are as follows:

[0046] (1) Fiber slag removal and modification: Disperse and stir the fiber in water (stirring speed 240-280r / min, stirring time 3-5min), filter and remove slag, add modifier and additives and stir again (stirring spe...

Embodiment 2

[0053] A high-temperature-resistant ceramic fiber filter tube, its components by mass fraction include:

[0054] 1000 parts of water, 12 parts of fiber,

[0055] 200 parts of organic binder, 500 parts of inorganic binder,

[0056] 3.5 parts of additives, 10 parts of modifiers,

[0057] Described water is deionized water;

[0058] The fiber is a mixture of aluminum silicate fiber and alumina fiber;

[0059] The organic binder is PVA (polyvinyl alcohol);

[0060] The inorganic binder is a silicon-aluminum composite sol;

[0061] Described additive is bentonite and kaolin;

[0062] The modifier is polyaluminum sulfate.

[0063] The preparation steps of the present invention are specifically:

[0064] (1) Fiber slag removal and modification: Disperse and stir the fiber in water (stirring speed 260-280r / min, stirring time 3-5min), filter and remove slag, add modifiers and additives and stir again (stirring speed 500r / min -600r / min, stirring time 12-15min);

[0065] (2) Dry...

Embodiment 3

[0071] 800 parts of water, 8 parts of fiber,

[0072] 200 parts of organic binder, 450 parts of inorganic binder,

[0073] 2 parts of additives, 5 parts of modifiers,

[0074] Described water is pure water;

[0075] The fiber is a mixture of aluminum silicate fiber and zirconium-containing fiber;

[0076] Described organic binder is the mixing of CMC (sodium carboxymethyl cellulose) and PVA (polyvinyl alcohol);

[0077] The inorganic binder is aluminum sol;

[0078] The additive is alumina;

[0079] The modifier is a mixture of polyaluminum sulfate and polyacrylamide.

[0080] The preparation steps of the present invention are specifically:

[0081] (1) Fiber slag removal and modification: Disperse and stir the fiber in water (stirring speed 250-270r / min, stirring time 3-5min), filter and remove slag, add modifier and additives and stir again (stirring speed 500r / min -600r / min, stirring time 10-15min);

[0082] (2) Dry the slag-removed and modified fibers at a drying t...

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Abstract

The invention relates to the field of refractory fibers, in particular to a high-temperature-resistant ceramic fiber tube. The high-temperature-resistant ceramic fiber tube is prepared from, by mass,800-1000 parts of water, 8-12 parts of fibers, 150-200 parts of an organic binding agent, 400-500 parts of an inorganic binding agent, 0.5-3.5 parts of an additive and 3-10 parts of a modifying agent.The high-temperature-resistant ceramic fiber tube has advantages that the highest heat-proof temperature of a ceramic fiber filter material prepared from the components reaches 1400 DEG C; the ceramic fiber filter material prepared from the components avoids a sintering process, so that production cost is sharply reduced; the fiber tube prepared from the components is uniform in fiber density, uniform in heating and excellent in filter performance; in addition, high porosity is realized, a porosity range is 85-95%, and uniform pore size distribution is realized.

Description

technical field [0001] The invention relates to the field of refractory fibers, in particular to a high-temperature resistant ceramic fiber tube. Background technique [0002] Ceramic fiber is a kind of fiber post lightweight refractory material, its diameter is generally 2-5μm, the length is mostly 30-250mm, and the surface of the fiber is smooth and cylindrical. Because of its light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat and mechanical shock resistance, it is widely used in machinery, metallurgy, chemical industry, petroleum, ceramics, glass, electronics and other industries. Ordinary ceramic fiber, also known as aluminum silicate fiber, is called ceramic fiber because one of its main components is alumina, and alumina is the main component of porcelain. The addition of zirconia or chromium oxide can further increase the service temperature of ceramic fibers. In recent years, due to the continuous rise o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/00C04B28/24B28B1/52B01D39/06
CPCB01D39/06B01D2239/10B28B1/52C04B28/005C04B28/24C04B38/0038C04B22/002C04B14/4625C04B14/38C04B24/383C04B14/104C04B14/106C04B24/2652C04B38/0074C04B14/4656C04B24/2623C04B22/148C04B22/06
Inventor 茆福忠
Owner 江苏赛图新材料科技有限公司
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