High temperature creep resistant mullite-cordierite product and preparation method thereof

A cordierite and creep-resistant technology, applied in the field of high-temperature refractories, can solve the problems of low high-temperature creep resistance, and achieve the effects of reducing porosity, good thermal shock resistance, and strengthening sintering

Inactive Publication Date: 2014-03-26
长兴宏业高科高温耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, most of the data reports on mullite-cordierite products focus on how to improve the thermal shock resistance of the material, but there are relatively few studies on how to improve the high temperature creep resistance of the material

Method used

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  • High temperature creep resistant mullite-cordierite product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The main raw materials are formulated according to the following proportions by weight:

[0048]Sintered mullite M70: 10 parts of sintered mullite with a particle size of 0.1-1mm

[0049] Sintered mullite M45: 5 parts of sintered mullite with particle size less than 0.089mm

[0050] 5 parts of sintered mullite with a particle size of 0.5-1 mm

[0051] 5 parts of sintered mullite with a particle size of 1-1.5 mm

[0052] 10 parts of cordierite with a particle size of 0.1-1 mm

[0053] 8 parts of cordierite with a particle size of 1-3mm

[0054] 8 parts of white corundum

[0055] Fused silica 4.35 parts

[0056] Kyanite 10 parts

[0057] 10 parts of alumina micropowder

[0058] Bentonite powder 1.6 parts

[0059] 8 parts cooked talc micropowder

[0060] 15 parts kaolin

[0061] Add 0.05 part of binder agent sulfurous acid pulp waste liquid, the specific process steps are as follows:

[0062] 1) Mixing: Put the raw materials in a ...

Embodiment 2

[0067] The main raw materials are formulated according to the following proportions by weight:

[0068] Sintered mullite M70: 12 parts of sintered mullite with a particle size of 0.1-1mm

[0069] Sintered mullite M45: 6 parts of sintered mullite with particle size less than 0.089mm

[0070] 6 parts of sintered mullite with a particle size of 0.5-1mm

[0071] 8 parts of sintered mullite with a particle size of 1-1.5mm

[0072] 12 parts of cordierite with a particle size of 0.1-1mm

[0073] 10 parts of cordierite with a particle size of 1-3mm

[0074] 12 parts of white corundum

[0075] Fused silica 2.77 parts

[0076] Kyanite 5 parts

[0077] 7 parts of alumina micropowder

[0078] Bentonite powder 1.2 parts

[0079] 6 parts cooked talc micropowder

[0080] 12 parts kaolin

[0081] Add 0.03 part of binding agent hydroxymethyl cellulose, and the specific process steps are as follows:

[0082] 1) Mixing: Put the raw materials in a vertic...

Embodiment 3

[0087] The main raw materials are formulated according to the following proportions by weight:

[0088] Sintered mullite M70: 8 parts of sintered mullite with a particle size of 0.1-1mm

[0089] Sintered mullite M45: 4 parts of sintered mullite with particle size less than 0.089mm

[0090] 4 parts of sintered mullite with a particle size of 0.5-1 mm

[0091] 6 parts of sintered mullite with a particle size of 1-1.5mm

[0092] 9 parts of cordierite with a particle size of 0.1-1mm

[0093] 7 parts of cordierite with a particle size of 1-3mm

[0094] 5 parts of white corundum

[0095] Fused silica 5.75 parts

[0096] Kyanite 12 parts

[0097] 12 parts of alumina micropowder

[0098] 2.2 parts of bentonite micropowder

[0099] 8 parts cooked talc micropowder

[0100] Kaolin 17 parts

[0101] Add 0.05 part of binder dextrin, and the specific process steps are as follows:

[0102] 1) Mixing: Put the raw materials in a vertical stainless ste...

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Abstract

The invention relates to a high temperature refractory material, and specifically relates to a high temperature creep resistant mullite-cordierite product and a preparation method thereof. The product is prepared from the main raw materials of sintered mullite, cordierite, white corundum, fused quartz, kyanite, alumina micro powder, bentonite micro powder, slaked talcum micro powder and kaolin by the steps of mixing, mixture ageing, forming-drying and final high-temperature firing. By adopting scientific mixing proportion and graduation, and using a resonable production method, the high temperature creep resistant mullite-cordierite product provided by the invention is prepared. Compared with other products, the high temperature creep resistant mullite-cordierite product provided by the invention has the advantages of low apparent porosity, high volume density, good creep resistance, excellent thermal shock resistance, long service life, and on the like, and is mainly suitable for moderate temperature material sintering, such as sintering of cobaltous oxide and ferric aluminum phosphate raw materials for automotive batteries in chemical industry.

Description

technical field [0001] The invention relates to a high-temperature refractory material, in particular to a high-temperature creep-resistant mullite-cordierite product. Background technique [0002] Cordierite has the advantages of low thermal expansion coefficient and good thermal shock resistance, and is widely used in automobile exhaust purification devices, heat-resistant coatings, catalyst carriers, heat exchanger materials, foam ceramics, electronic packaging materials, printed circuit boards, etc. , and some environments with sudden changes in cold and heat, such as ceramic heat exchangers, hot blast stoves, pillar bricks, boxes, shed boards, etc. However, due to the low mechanical strength, low load softening point and narrow synthesis temperature range of cordierite, it is difficult to obtain pure phase cordierite by traditional methods, which limits its excellent performance. [0003] Mullite is a high-quality refractory material, which has the advantages of small ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/622
Inventor 陈新源
Owner 长兴宏业高科高温耐火材料有限公司
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