Corrosion-resistant microporous mullite lightweight refractory brick and preparation method thereof

A mullite and refractory brick technology, which is applied in the field of corrosion-resistant microporous mullite lightweight refractory bricks and its preparation, can solve the problems of increasing heat energy loss, reducing the heat insulation effect of refractory materials, and increasing energy costs.
CN107954745AInactive Publication Date: 2018-04-24HENAN HAINADE NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HENAN HAINADE NEW MATERIAL CO LTD
Publication Date
2018-04-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a corrosion-resistant microporous mullite light-weight refractory brick, which comprises a refractory brick base and a high-temperature resistant coating coated on the surface of the refractory brick base; wherein, the raw materials of the refractory brick base include: 20% to 30% of large tolite particles, 15% to 25% of small andalusite particles, 13% to 24% of metakaolin ultrafine powder, 5% to 10% of bound clay, 0.5% to 1.5% of expanded graphite, and fly ash 15% to 20%, hollow glass microspheres 3% to 6%, and the balance is pulp water; the raw materials of the high temperature resistant coating include: silica aerogel 65% to 70%, yttrium oxide gel 15% ~ 17%, nano silicon nitride 5% ~ 10%, potassium hexatitanate whisker 1% ~ 3%, and the balance of ethanol is ethanol. The invention also provides a preparation method of the corrosion-resistant microporous mullite light refractory brick, which has simple steps and is easy to produce automatically.
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Description

technical field

[0001] The invention belongs to the technical field of refractory materials, and in particular relates to a corrosion-resistant microporous mullite lightweight refractory brick and a preparation method thereof. Background technique

[0002] Refractory materials are widely used in metallurgy, petrochemical, glass and other high-temperature industries due to their good corrosion resistance to high-temperature media and their thermal insulation properties. As my country's emphasis on energy saving and consumption reduction continues to increase, more research and development has been done on lightweight refractory materials with good thermal insulation effects. Unshaped refractory materials have received special attention due to their advantages of convenient construction, low production cost, and good overall structure of the lining, among which refractory castables are the most widely used.

[0003] The commonly used refractory castables are mainly Al 2 o 3...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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