CN104876609A - Thermal-shock resistant refractory brick - Google Patents
Thermal-shock resistant refractory brick Download PDFInfo
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- CN104876609A CN104876609A CN201510286144.2A CN201510286144A CN104876609A CN 104876609 A CN104876609 A CN 104876609A CN 201510286144 A CN201510286144 A CN 201510286144A CN 104876609 A CN104876609 A CN 104876609A
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Abstract
The invention discloses a thermal-shock resistant refractory brick and relates to the technical field of manufacturing of refractory materials. The thermal-shock resistant refractory brick comprises, by weight, 30-40 parts of mullite powder, 10-20 parts of fine andalusite powder, 5-15 parts of fine sillimanite powder, 5-8 parts of Guangxi clay and 3-5 parts of silica powder and is obtained by mixing the ingredients, making blank, drying and baking. Compared with the prior art, the thermal-shock resistant refractory brick is resistant to high temperature and corrosion and good in thermal-shock resistant performance, and refractoriness under load is increased. In addition, the thermal-shock resistant refractory brick is not easy to crack and damage when used for an industrial rotary kiln, and service life is prolonged.
Description
Technical field
The present invention relates to refractory materials manufacturing technology field, especially a kind of heat shock resistant refractory brick.
Background technology
Industrial rotary kiln stove refractory brick not only will bear high temperature, also to bear the fretting wear of material, kiln body rotates the stress etc. produced, therefore refractory brick used requires high temperature resistant, corrosion-resistant, thermal shock resistance is good, and refractoriness under load is high, and existing refractory brick is high temperature resistant, corrosion-resistant, but thermal shock resistance is poor, refractoriness under load is lower, and use as industrial rotary kiln stove refractory brick and easily occur that crackle damages, work-ing life is short.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of heat shock resistant refractory brick, can be poor to solve existing refractory brick anti-thermal shock, the problem that refractoriness under load is lower.
In order to solve the problem, the technical solution used in the present invention is: this heat shock resistant refractory brick, comprises the raw material of following weight part: mullite powder 30 parts ~ 40 parts, andaluzite fine powder 10 parts ~ 20 parts, sillimanite fine powder 5 parts ~ 15 parts, Guangxi clay 5 parts ~ 8 parts, silicon powder 3 parts ~ 5 parts.
In above-mentioned heat shock resistant refractory brick technical scheme, technical scheme can also be more specifically: the particle diameter of described andaluzite fine powder and described sillimanite fine powder is 40 μm ~ 80 μm; Particle diameter≤5 μm of described silicon powder.
Described mullite is the mineral that aluminosilicate at high temperature generates, have high temperature resistant, intensity high thermal conductivity coefficient is little, the features such as energy-saving effect is remarkable, mullite ore deposit be used to produce high-temperature refractory.
Described andaluzite, it is a kind of aluminium silicate mineral, be heated to after 1350 DEG C at ambient pressure, start to change into the acicular mullite parallel with mother crystal, andaluzite becomes in the process of mullite at thermal conversion, good mullite network can be formed, volumetric expansion about 4%, has higher fire performance, and refractoriness can reach more than 1800 DEG C, and resistance to suddenly cold and hot, physical strength is large, and heat shock resistance power is strong, and slag resistance is strong, loading point of inversion is high, and has high chemical stability and extremely strong resistance to chemical corrosion.
Described sillimanite, is a kind of brown, light green, light blue or white glassy silicate minerals, becomes mullite, can do high grade refractory when being heated to 1300 DEG C.
Described Guangxi clay, it is the soft flame-proof clay that a kind of plasticity-is good, its granularity is superfine, the loose property of leaching and cohesiveness also fine, sintering range is wide, containing kaolinite often more than 70%, and based on disordered kaolinite, can significantly increase its plasticity-and folding strength, be high-quality bonding clay used for refractory material.
Described silicon powder, by natural quartz or the fused quartz micro mist through multiple tracks processes such as fragmentation, ball milling, flotation, pickling purification, high purity water process, possess that temperature tolerance is good, the excellent performance such as acid-alkali-corrosive-resisting, poor thermal conductivity, high insulation, low bulk, stable chemical performance, hardness are large, be widely used in the fields such as chemical industry, electronics, coating, senior paint.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
The present invention adopts mullite powder, andaluzite fine powder, sillimanite fine powder to be main raw material, Guangxi clay and silicon powder are bonding agent, fire heat shock resistant refractory brick, this refractory brick is high temperature resistant, corrosion-resistant, thermal shock resistance is good, refractoriness under load improves, and uses not easily occur that crackle damages, and increases the service life as industrial rotary kiln stove refractory brick.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1
A kind of heat shock resistant refractory brick, comprises the raw material of following weight part: mullite powder 300 kilograms, andaluzite fine powder 100 kilograms, sillimanite fine powder 50 kilograms, Guangxi clay 50 kilograms, silicon powder 30 kilograms; The andaluzite fine powder of the present embodiment and the particle diameter of sillimanite fine powder are 40 μm; The particle diameter of silicon powder is 5 μm.
Raw material is taken by the weight part of above-mentioned each raw material, by mullite powder, andaluzite fine powder, that sillimanite fine powder puts into sand mill is mixing, then Guangxi clay is added mixing with the water accounting for raw material gross weight 2%, adding silicon powder again carries out mixing, brick pressing machine is adopted to be pressed into adobe, put into calcining kiln sintering after brick bat drying, obtain this heat shock resistant refractory brick.
Embodiment 2
A kind of heat shock resistant refractory brick, comprises the raw material of following weight part: mullite powder 400 kilograms, andaluzite fine powder 200 kilograms, sillimanite fine powder 150 kilograms, Guangxi clay 80 kilograms, silicon powder 50 kilograms; The andaluzite fine powder of the present embodiment and the particle diameter of sillimanite fine powder are 80 μm; The particle diameter < of silicon powder 5 μm.
Raw material is taken by the weight part of above-mentioned each raw material, by mullite powder, andaluzite fine powder, that sillimanite fine powder puts into sand mill is mixing, then Guangxi clay is added mixing with the water accounting for raw material gross weight 3%, adding silicon powder again carries out mixing, brick pressing machine is adopted to be pressed into adobe, put into calcining kiln sintering after brick bat drying, obtain this heat shock resistant refractory brick.
Claims (2)
1. a heat shock resistant refractory brick, is characterized in that the raw material comprising following weight part: mullite powder 30 parts ~ 40 parts, andaluzite fine powder 10 parts ~ 20 parts, sillimanite fine powder 5 parts ~ 15 parts, Guangxi clay 5 parts ~ 8 parts, silicon powder 3 parts ~ 5 parts.
2. heat shock resistant refractory brick according to claim 1, is characterized in that: the particle diameter of described andaluzite fine powder and described sillimanite fine powder is 40 μm ~ 80 μm; Particle diameter≤5 μm of described silicon powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286144.2A CN104876609A (en) | 2015-05-29 | 2015-05-29 | Thermal-shock resistant refractory brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286144.2A CN104876609A (en) | 2015-05-29 | 2015-05-29 | Thermal-shock resistant refractory brick |
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| CN104876609A true CN104876609A (en) | 2015-09-02 |
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| CN201510286144.2A Pending CN104876609A (en) | 2015-05-29 | 2015-05-29 | Thermal-shock resistant refractory brick |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105294128A (en) * | 2015-11-19 | 2016-02-03 | 长兴县新宏信耐火材料有限公司 | Andalusite-mullite composite material brick |
| CN107382335A (en) * | 2017-06-30 | 2017-11-24 | 徐州苏牌高温新材料有限公司 | A kind of high-strength heat shock resistant refractory brick |
| CN112479693A (en) * | 2020-12-01 | 2021-03-12 | 江苏恒耐炉料集团有限公司 | High-strength thermal shock-resistant wear-resistant silicon mullite brick and production process thereof |
| CN113213954A (en) * | 2021-05-12 | 2021-08-06 | 郑州金河源耐火材料有限公司 | High-refractoriness under load mullite composite brick and preparation method thereof |
-
2015
- 2015-05-29 CN CN201510286144.2A patent/CN104876609A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105294128A (en) * | 2015-11-19 | 2016-02-03 | 长兴县新宏信耐火材料有限公司 | Andalusite-mullite composite material brick |
| CN107382335A (en) * | 2017-06-30 | 2017-11-24 | 徐州苏牌高温新材料有限公司 | A kind of high-strength heat shock resistant refractory brick |
| CN112479693A (en) * | 2020-12-01 | 2021-03-12 | 江苏恒耐炉料集团有限公司 | High-strength thermal shock-resistant wear-resistant silicon mullite brick and production process thereof |
| CN113213954A (en) * | 2021-05-12 | 2021-08-06 | 郑州金河源耐火材料有限公司 | High-refractoriness under load mullite composite brick and preparation method thereof |
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Application publication date: 20150902 |