CN101857450A - Corundum structural heat-insulation integrative composite brick and preparation method - Google Patents
Corundum structural heat-insulation integrative composite brick and preparation method Download PDFInfo
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- CN101857450A CN101857450A CN 201010192186 CN201010192186A CN101857450A CN 101857450 A CN101857450 A CN 101857450A CN 201010192186 CN201010192186 CN 201010192186 CN 201010192186 A CN201010192186 A CN 201010192186A CN 101857450 A CN101857450 A CN 101857450A
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Abstract
The invention discloses a corundum structural heat-insulation integrative composite brick and a preparation method. The corundum structural heat-insulation integrative composite brick comprises a heavy supporting layer of compact corundum and a light heat-insulation layer taking an alumina hollow sphere as a light aggregate and is formed by compounding the heavy supporting layer and the light heat-insulation layer through adopting vibration pressurization or mechanical pressing formation, wherein the length dimension proportion of the heavy supporting layer to the light heat-insulation layer is 1 to 5:2 to 1. The invention overcomes the defects of large heat conduction coefficient and short service life of a corundum brick used by a high-temperature kiln; and the invention overcomes the problems of low refractoriness under load, easy occurrence of the inward protrusion of a kiln body after long-time use and the like of a traditional alumina bubble brick. The invention provides the structural heat-insulation integrative composite brick with high refractoriness, good structural strength and good heat-preservation and heat-insulation properties.
Description
Technical field
The present invention relates to fire-resistant composite brick and preparation method, especially relate to a kind of corundum structural heat-insulation integrative composite brick and preparation method.
Background technology
High temperature resistant heat insulation material is the key component of Thermal Equipment such as various kilns, and high temperature resistant heat insulation material directly contacts flame, requires not only high temperature resistant but also heat-insulating and energy-saving, and is high especially to the performance requriements of material.Exploitation lightweight, high-strength, good thermal shock stability, use temperature high energy satisfy the required material of light structures high temperature kiln, shortcomings such as the thermal capacity that changes conventional high-temperature kiln employing heavy material and exist is big, temperature rise rate is little, energy consumption is big, work-ing life is short, the construction maintenance capacity is big are to build resource-conserving and friendly environment society's service.
Alumina hollow ball is used widely in the heat insulation field of fire resistant heat preserving, and hollow ball has utilized the big characteristics of enclosed cavity thermal resistance, good heat-insulation effect, and the intensity height, high temperature resistant, antistripping.The lightweight alumina hollow ball product has overcome that the foamed alumina product strength is low, the characteristics of high-temperature creep resistance difference, not only can directly contact flame, can also use as thermofin, but its refractoriness under load awaits further raising, after particularly furnace life is improved, because the volatilization of the low melting point in flue gas composition enters and long-time creep effect easily causes the furnace lining distortion interior prominent, furnace roof subsides.For further prolonging furnace service life, for satisfying energy-saving and cost-reducing requirement, Zhejiang University's material is the advantage of ceramic institute in conjunction with this place high-temperature material preparation and high temperature power-saving technology aspect, utilize institute's proprietary technology to develop hollow ball/corundum-mullite composite brick, tight zone is used for load-bearing, improves kiln compactness simultaneously and reduces high temperature creep, and light layer is mainly used in heat insulation and improves heat-shock resistance, so that further improve furnace life, reach energy saving purposes.Notice when building kiln by laying bricks or stones that light layer contact flame does not improve the life-span effect otherwise have.
Summary of the invention
In order to overcome the shortcoming of existing high temperature kiln heavy corundum brick structure and lightweight alumina bubble brick structure, the object of the present invention is to provide that structural strength is good, refractoriness is high, thermal and insulating performance reaches creep resisting a kind of corundum structural heat-insulation integrative composite brick and preparation method well.
The technical solution adopted for the present invention to solve the technical problems is:
One, a kind of corundum structural heat-insulation integrative composite brick:
The heavy supporting layer that comprises compact alumina, and be the light heat insulation layer of aglite with the alumina hollow ball, being composited by both, the length dimension ratio of heavy supporting layer and light heat insulation layer is 1～5: 2～1.
Two, a kind of preparation method of corundum structural heat-insulation integrative composite brick:
The proportioning raw materials of A, heavy supporting layer and light heat insulation layer is as follows:
One, in the compact alumina heavy supporting layer, the quality percentage composition of each component is:
1～3mm fused corundom 35～45%; Less than 1mm fused corundom 20～35%; Be not more than 325 order fused corundoms 15～25%; α-Al
2O
3Powder 10～20%; Add wedding agent 3～5%;
Two, light heat insulation layer is for being the light heat insulation layer of aglite with the alumina hollow ball, and its technical indicator and content ratio are as follows:
In the alumina hollow ball high-strength light thermofin, Al
2O
3Quality percentage composition＞98.5%, particle diameter is 0.2～5mm, natural tap density 0.6～0.9g/cm
3The quality percentage composition of each component is: alumina hollow ball 35～65%; α-Al
2O
3Micro mist 35～65%; Adding wedding agent is α-Al
2O
330～35% of micro mist quality percentage composition; Corresponding density is 1.3～2.0g/cm
3
The preparation method of B, corundum structural heat-insulation integrative composite brick:
(1) heavy supporting layer preparation: will be not more than 325 powder materials earlier and prepare the back in proportion and in ball mill, mix, and mix the powder that the back adding mixes at all the other particless of aggregates and wedding agent again, and stir standby after 10～30 minutes;
(2) light heat insulation layer preparation: with the alumina hollow ball is aglite, and aglite is mixed with wedding agent in proportion, add in proportion then powder stir 10～30 minutes standby;
(3) moulding: finish after the batching, with dividing plate the material chamber of forming mould is divided into two portions, the length dimension ratio of heavy supporting layer and light heat insulation layer is 1～5: 2～l, and reinforced back is extracted dividing plate out, adopts vibrations pressurization or mechanical pressing;
(4) burn till: the loading of kiln after 80～150 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1650～1800 ℃ of insulations in 3～8 hours.
In the described light heat insulation layer, wedding agent is phosphoric acid solution or phosphate dihydrogen aluminum solution.
In the heavy supporting layer of described fine and close magnesium-aluminium spinel, wedding agent is organic bond or phosphoric acid solution or phosphate dihydrogen aluminum solution.
The present invention adopts compact alumina heavy supporting layer, and alumina hollow ball is introduced the space as the thermofin aggregate and improved heat-proof quality and guarantee light heat insulation layer intensity and refractoriness.The composite structure brick separates with dividing plate earlier when moulding is reinforced, adds heavy material and light material respectively, and reinforced back is extracted dividing plate out, adopts vibrations pressurization or mechanical pressing, and base substrate loading of kiln after 80～150 ℃ of oven dry was burnt till in 1650～1800 ℃ of insulations in 3～8 hours.
Alumina hollow ball is that alumina content is at the winding-up of the electric smelting more than 98.5% hollow ball.
The beneficial effect that has of the present invention is:
The present invention changes the shortcoming that existing corundum brick structure or alumina bubble brick inner lining structure kiln exist, and prolongs kiln work-ing life, reduces cost.
Description of drawings
Accompanying drawing is the corundum structural heat-insulation integrative composite brick structure iron.
Among the figure: 1, heavy supporting layer, 2, light heat insulation layer.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
As shown in drawings, the present invention includes the heavy supporting layer 1 of compact alumina, and be the light heat insulation layer 2 of aglite with the alumina hollow ball, be composited by both, the length dimension ratio of heavy supporting layer and light heat insulation layer is 1～5: 2～1.Compact alumina heavy supporting layer 1, high temperature creep-resisting; 2 of light heat insulation layers play heat-blocking action towards flame, and have high-heat resistance shock resistant.
Embodiment 1:
Present embodiment adopts compact alumina refractory materials and alumina hollow ball to be composited, raw material and quality percentage composition thereof that the heavy working lining is adopted are: 1～3mm fused corundom 35%, less than 1mm fused corundom 30%, be not more than 325 order fused corundoms 20%, α-Al
2O
3Powder 15% adds spent pulping liquor 3%; Raw material and quality percentage composition thereof that the lightweight working lining is adopted are: alumina hollow ball 65%, α-Al
2O
3Micro mist 35%, to add the phosphoric acid wedding agent be α-Al
2O
335% of micro mist quality percentage composition.
Preparation technology may further comprise the steps:
(1) batching: the proportioning process of heavy working lining mixes in ball mill after 325 powder materials prepare in proportion for being not more than earlier, mixes the powder that the back adding mixes at all the other particless of aggregates and wedding agent then, stirs standby after 10～30 minutes; The proportioning process of light heat insulation layer adds α-Al then in proportion for alumina hollow ball is mixed with the phosphoric acid wedding agent in proportion
2O
3Stir 10～30 minutes standby.
(2) moulding: finish after the batching, according to the use location and the wear rate of material and determine the heavy working lining work-ing life and the lightweight working lining between dimension scale, with dividing plate the material chamber of forming mould is divided into two portions according to ratio, reinforced back is extracted dividing plate out, adopts the vibrations extrusion forming.
(3) burn till: the loading of kiln after 80～150 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1800 ℃ of insulations in 3 hours.
Embodiment 2:
Present embodiment adopts compact alumina refractory materials and alumina hollow ball to be composited, raw material and quality percentage composition thereof that the heavy working lining is adopted are: 1～3mm fused corundom 45%, less than 1mm fused corundom 25%, be not more than 325 order fused corundoms 15%, α-Al
2O
3Powder 15% adds yellow starch gum 5%; Raw material that light heat insulation layer adopted and quality percentage composition thereof are: alumina hollow ball 38%, α-Al
2O
3Micro mist 62%, to add the biphosphate Al binding agent be α-Al
2O
331% of micro mist quality percentage composition.
Preparation technology may further comprise the steps:
(1) batching: the proportioning process of heavy working lining mixes in ball mill after 325 powder materials prepare in proportion for being not more than earlier, mixes the powder that the back adding mixes at all the other particless of aggregates and wedding agent then, stirs standby after 10～30 minutes; The proportioning process of high-strength light thermofin adds α-Al then in proportion for alumina hollow ball is mixed with the biphosphate Al binding agent in proportion
2O
3Stir 10～30 minutes standby.
(2) moulding: finish after the batching, according to the use location and the wear rate of material and determine the heavy working lining work-ing life and the lightweight working lining between dimension scale, with dividing plate the material chamber of forming mould is divided into two portions according to ratio, reinforced back is extracted dividing plate out, adopts mechanical pressing.
(3) burn till: the loading of kiln after 80～150 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1650 ℃ of insulations in 3～8 hours.
Embodiment 3:
Present embodiment adopts compact alumina refractory materials and alumina hollow ball to be composited, raw material and quality percentage composition thereof that the heavy working lining is adopted are: 1～3mm fused corundom 45%, less than 1mm fused corundom 20%, be not more than 325 order fused corundoms 25%, α-Al
2O
3Powder 10% adds lignin sulfonic acid element 3%; Raw material and quality percentage composition thereof that the lightweight working lining is adopted are: corundum bollow ball 60%, α-Al
2O
3Micro mist 40%, to add the phosphate dihydrogen aluminum solution wedding agent be α-Al
2O
335% of micro mist quality percentage composition.
Preparation technology may further comprise the steps:
(1) batching: the proportioning process of heavy working lining mixes in ball mill after 325 powder materials prepare in proportion for being not more than earlier, mixes the powder that the back adding mixes at all the other particless of aggregates and wedding agent then, stirs standby after 10～30 minutes; The proportioning process of high-strength light thermofin adds α-Al then in proportion for corundum bollow ball is mixed with the phosphate dihydrogen aluminum solution wedding agent in proportion
2O
3Stir 10～30 minutes standby.
(2) moulding: finish after the batching, according to the use location and the wear rate of material and determine the heavy working lining work-ing life and the lightweight working lining between dimension scale, with dividing plate the material chamber of forming mould is divided into two portions according to ratio, reinforced back is extracted dividing plate out, adopts vibrations pressurization or mechanical pressing.
(3) burn till: the loading of kiln after 80～150 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1650 ℃ of insulations in 3～8 hours.
Embodiment 4:
Present embodiment adopts the compact alumina refractory materials, lightweight working lining aggregate is an aggregate by alumina hollow ball, and raw material and quality percentage composition thereof that the heavy working lining is adopted are: 1～3mm fused corundom 40%, less than 1mm fused corundom 30%, be not more than 325 order fused corundoms 20%, α-Al
2O
3Powder 10% adds polyvinyl alcohol solution 4%; Raw material and quality percentage composition thereof that the lightweight working lining is adopted are: alumina hollow ball 50%, α-Al
2O
3Micro mist 50%, to add the phosphoric acid solution wedding agent be α-Al
2O
333% of micro mist quality percentage composition.
Preparation technology may further comprise the steps:
(1) batching: the proportioning process of heavy working lining mixes in ball mill after 325 powder materials prepare in proportion for being not more than earlier, mixes the powder that the back adding mixes at all the other particless of aggregates and wedding agent then, stirs standby after 10～30 minutes; The proportioning process of high-strength light thermofin adds α-Al then in proportion for alumina hollow ball is mixed with phosphoric acid solution in proportion
2O
3Stir 10～30 minutes standby.
(2) moulding: finish after the batching, according to the use location and the wear rate of material and determine the heavy working lining work-ing life and the lightweight working lining between dimension scale, with dividing plate the material chamber of forming mould is divided into two portions according to ratio, reinforced back is extracted dividing plate out, adopts vibrations pressurization or mechanical pressing.
(3) burn till: the loading of kiln after 80～150 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1650 ℃ of insulations in 3～8 hours.
Claims (4)
1. corundum structural heat-insulation integrative composite brick, it is characterized in that: the heavy supporting layer that comprises compact alumina, and be the light heat insulation layer of aglite with the alumina hollow ball, being composited by both, the length dimension ratio of heavy supporting layer and light heat insulation layer is 1～5: 2～1.
2. the preparation method of a kind of corundum structural heat-insulation integrative composite brick according to claim 1 is characterized in that:
The proportioning raw materials of A, heavy supporting layer and light heat insulation layer is as follows:
One, in the compact alumina heavy supporting layer, the quality percentage composition of each component is:
1～3mm fused corundom 35～45%; Less than 1mm fused corundom 20～35%; Be not more than 325 order fused corundoms 15～25%; α-Al
2O
3Powder 10～20%; Add wedding agent 3～5%;
Two, light heat insulation layer is for being the light heat insulation layer of aglite with the alumina hollow ball, and its technical indicator and content ratio are as follows:
In the alumina hollow ball high-strength light thermofin, Al
2O
3Quality percentage composition＞98.5%, particle diameter is 0.2～5mm, natural tap density 0.6～0.9g/cm
3The quality percentage composition of each component is: alumina hollow ball 35～65%; α-Al
2O
3Micro mist 35～65%; Adding wedding agent is α-Al
2O
330～35% of micro mist quality percentage composition; Corresponding density is 1.3～2.0g/cm
3
The preparation method of B, corundum structural heat-insulation integrative composite brick:
(1) heavy supporting layer preparation: will be not more than 325 powder materials earlier and prepare the back in proportion and in ball mill, mix, and mix the powder that the back adding mixes at all the other particless of aggregates and wedding agent again, and stir standby after 10～30 minutes;
(2) light heat insulation layer preparation: with the alumina hollow ball is aglite, and aglite is mixed with wedding agent in proportion, add in proportion then powder stir 10～30 minutes standby;
(3) moulding: finish after the batching, with dividing plate the material chamber of forming mould is divided into two portions, the length dimension ratio of heavy supporting layer and light heat insulation layer is 1～5: 2～1, and reinforced back is extracted dividing plate out, adopts vibrations pressurization or mechanical pressing;
(4) burn till: the loading of kiln after 80～150 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1650～1800 ℃ of insulations in 3～8 hours.
3. the preparation method of a kind of corundum structural heat-insulation integrative composite brick according to claim 1, it is characterized in that: in the described light heat insulation layer, wedding agent is phosphoric acid solution or phosphate dihydrogen aluminum solution.
4. the preparation method of a kind of corundum structural heat-insulation integrative composite brick according to claim 1, it is characterized in that: in the heavy supporting layer of described fine and close magnesium-aluminium spinel, wedding agent is organic bond or phosphoric acid solution or phosphate dihydrogen aluminum solution.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010192186 CN101857450B (en) | 2010-06-07 | 2010-06-07 | Corundum structural heat-insulation integrative composite brick and preparation method |
| PCT/CN2011/075386 WO2011153932A1 (en) | 2010-06-07 | 2011-06-07 | Structure and heat insulation integrated composite brick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010192186 CN101857450B (en) | 2010-06-07 | 2010-06-07 | Corundum structural heat-insulation integrative composite brick and preparation method |
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| CN101857450B CN101857450B (en) | 2013-06-05 |
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| CN 201010192186 Expired - Fee Related CN101857450B (en) | 2010-06-07 | 2010-06-07 | Corundum structural heat-insulation integrative composite brick and preparation method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230739A (en) * | 2011-06-06 | 2011-11-02 | 浙江大学 | Chromium corundum structure heat-insulation integrated composite brick and preparation method thereof |
| CN102230742A (en) * | 2011-06-06 | 2011-11-02 | 傅晓云 | Structure heat-insulation integrated composite brick and preparation method thereof |
| CN102261846A (en) * | 2011-06-06 | 2011-11-30 | 浙江大学 | Heat-insulating integrated composite brick having zirconium corundum structure and method for preparing heat-insulating integrated composite brick |
| CN102261845A (en) * | 2011-06-06 | 2011-11-30 | 浙江大学 | Heat insulation integral composite brick with corundum-mullite structure and preparation method |
| WO2011153932A1 (en) * | 2010-06-07 | 2011-12-15 | 浙江大学 | Structure and heat insulation integrated composite brick |
| CN102285811A (en) * | 2011-06-06 | 2011-12-21 | 浙江大学 | Corundum-spinel structure and thermal insulation integrated composite brick and preparation method thereof |
| CN102285813A (en) * | 2011-06-06 | 2011-12-21 | 浙江大学 | Zirconium-corundum-mullite structure and thermal insulation integrated composite brick and preparation method thereof |
| CN103086727A (en) * | 2013-01-28 | 2013-05-08 | 浙江大学苏州工业技术研究院 | Intermediate density corundum brick for rotary kiln and preparation method thereof |
| CN105237019A (en) * | 2015-11-19 | 2016-01-13 | 长兴县新宏信耐火材料有限公司 | Novel composite brick made of magnesium-zirconium materials |
| CN107120972A (en) * | 2017-06-28 | 2017-09-01 | 长兴鑫迪耐火材料厂 | A kind of electrical kiln refractory brick of light thermal-insulation |
| CN110234617A (en) * | 2017-01-25 | 2019-09-13 | 西门子股份公司 | Fire resisting formed body and the method manufactured for it |
| CN113582705A (en) * | 2021-07-27 | 2021-11-02 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | Composite brick for kiln lining |
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| CN85104601A (en) * | 1985-06-14 | 1986-04-10 | 哈尔滨市耐火材料产品开发研究所 | Composite weight property insulation material and manufacture method |
| CN101148343A (en) * | 2007-08-27 | 2008-03-26 | 浙江工业大学 | Gradient composite heat-insulating layer and manufacturing method thereof |
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2010
- 2010-06-07 CN CN 201010192186 patent/CN101857450B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104601A (en) * | 1985-06-14 | 1986-04-10 | 哈尔滨市耐火材料产品开发研究所 | Composite weight property insulation material and manufacture method |
| CN101148343A (en) * | 2007-08-27 | 2008-03-26 | 浙江工业大学 | Gradient composite heat-insulating layer and manufacturing method thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011153932A1 (en) * | 2010-06-07 | 2011-12-15 | 浙江大学 | Structure and heat insulation integrated composite brick |
| CN102285813A (en) * | 2011-06-06 | 2011-12-21 | 浙江大学 | Zirconium-corundum-mullite structure and thermal insulation integrated composite brick and preparation method thereof |
| CN102261846A (en) * | 2011-06-06 | 2011-11-30 | 浙江大学 | Heat-insulating integrated composite brick having zirconium corundum structure and method for preparing heat-insulating integrated composite brick |
| CN102261845A (en) * | 2011-06-06 | 2011-11-30 | 浙江大学 | Heat insulation integral composite brick with corundum-mullite structure and preparation method |
| CN102230742A (en) * | 2011-06-06 | 2011-11-02 | 傅晓云 | Structure heat-insulation integrated composite brick and preparation method thereof |
| CN102285811A (en) * | 2011-06-06 | 2011-12-21 | 浙江大学 | Corundum-spinel structure and thermal insulation integrated composite brick and preparation method thereof |
| CN102230739A (en) * | 2011-06-06 | 2011-11-02 | 浙江大学 | Chromium corundum structure heat-insulation integrated composite brick and preparation method thereof |
| CN102285813B (en) * | 2011-06-06 | 2013-05-08 | 浙江大学 | Zirconium-corundum-mullite structure and thermal insulation integrated composite brick and preparation method thereof |
| CN103086727A (en) * | 2013-01-28 | 2013-05-08 | 浙江大学苏州工业技术研究院 | Intermediate density corundum brick for rotary kiln and preparation method thereof |
| CN105237019A (en) * | 2015-11-19 | 2016-01-13 | 长兴县新宏信耐火材料有限公司 | Novel composite brick made of magnesium-zirconium materials |
| CN110234617A (en) * | 2017-01-25 | 2019-09-13 | 西门子股份公司 | Fire resisting formed body and the method manufactured for it |
| CN110234617B (en) * | 2017-01-25 | 2022-07-05 | 西门子能源全球有限两合公司 | Refractory shaped body and method for the production thereof |
| CN107120972A (en) * | 2017-06-28 | 2017-09-01 | 长兴鑫迪耐火材料厂 | A kind of electrical kiln refractory brick of light thermal-insulation |
| CN113582705A (en) * | 2021-07-27 | 2021-11-02 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | Composite brick for kiln lining |
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