CN101343185A - High-strength insulating brick and preparation thereof - Google Patents
High-strength insulating brick and preparation thereof Download PDFInfo
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- CN101343185A CN101343185A CNA2008100219742A CN200810021974A CN101343185A CN 101343185 A CN101343185 A CN 101343185A CN A2008100219742 A CNA2008100219742 A CN A2008100219742A CN 200810021974 A CN200810021974 A CN 200810021974A CN 101343185 A CN101343185 A CN 101343185A
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Abstract
The invention discloses a high strength insulating brick, comprising the following compositions, by weight: 15 to 30 parts of Alpha alumina fine powder, 35 to 60 parts of mullite fine powder, 10 to 20 parts of kaolin, 2.5 to 4 parts of organic particle pore-forming agent, 8 to 11 parts of complex binding agent and 10 to 15 parts of water. The invention also discloses a manufacturing method of the high strength insulating brick. The high strength insulating brick has rather good high temperature resistance and high temperature strength, good corrosion resistance and heat-shielding performance, and can be widely used for supplementary fired CO surplus heat boilers, petrochemical industry cracking heaters and various industrial furnaces in direct contact with flames. The manufacturing method is simple and easy in realization.
Description
Technical field
The invention belongs to fire resisting material field, relate in particular to a kind of high-strength insulating brick and manufacture method thereof that is used for compensation combustion type CO waste heat boiler.
Background technology
Compensation combustion type CO waste heat boiler is mainly used in the energy recovery utilization of oil catalytic cracking unit high-temperature flue gas treating processes, and the main component of high-temperature flue gas is CO
2, CO, N
2And SO
2, because the composition of high-temperature flue gas is to the Fe in the furnace lining material
2O
3Composition has erosion action, and the used material in these positions should have the hot strength and the excellent erosion-resisting characteristics of compact refractory material.Often use is heavy leck brick or high alumina brick at these positions.Because these brick iron-holder and alkali metal oxide content are generally all higher, thermal conductivity height, corrosion resistance are poor, and the disintegration of brick wall cracking often takes place, and cause the distortion of furnace wall box hat overtemperature.
Summary of the invention
In order to overcome above deficiency, technical problem to be solved provides a kind of high strength of compensation combustion type CO waste heat boiler, high temperature resistant, anti-erosion of being applicable to just in the present invention, good and the high-strength insulating brick with certain wear resistance of heat-proof quality.
The technical problem that the present invention also will solve provides the preparation method of above-mentioned high-strength insulating brick.
Thinking of the present invention is: high-strength insulating brick is in process of production by alkalimetal oxide and Fe in the strict control of material
2O
3Content, to guarantee resistance to elevated temperatures and the hot strength and the erosion-resisting characteristics of high-strength insulating brick.Adopting combined binder and the volatile organic fine particles of no slag is pore-forming material, adopt vacuum extrusion technology and new firing process, impel high-strength insulating brick to form many spheric sealed porositys, and reduce the size of spherical pore to greatest extent, improve the heat-proof quality of high-strength insulating brick.
Concrete technical scheme is as follows:
A kind of high-strength insulating brick is characterized in that it comprises the component of following parts by weight:
15～30 parts of αYang Hualv fine powders
35～60 parts of mullite fine powders
10～20 parts of kaolin
2.5～4 parts of organic fine particles pore-forming materials
8～11 parts of combined binders
10～15 parts in water.
Wherein, described αYang Hualv fine powder is 320 orders.
Wherein, described mullite fine powder is 100～220 orders.Preferred 100 order mullite fine powders and 220 order mullite fine powders are by the mixture of 3.5: 6.5 mass ratio.
Wherein, described organic fine particles pore-forming material particle diameter is 0.8～1.5mm.Described organic fine particles pore-forming material can be polystyrene sphere.
Wherein, described combined binder is SiO
2, ZrO
2, Cr
2O
3Pressed 2: 3: 3 with MgO: the mixture of 2 mass ratioes.
Make the method for above-mentioned high-strength insulating brick, comprise the steps:
1, αYang Hualv fine powder, mullite fine powder, kaolin, organic fine particles pore-forming material, combined binder and the water with formula ratio is mixed to evenly by formula ratio;
2, the material behind the mixing is through the extrusion molding of extrusion under vacuum machine;
3, after 1～2 day, drying is 5～7 days under 60～90 ℃ through seasoning in the adobe of moulding, after drying the remaining moisture content of base substrate≤2%;
4,, get product according to dimensional requirement precision work polishing again 1500-1550 ℃ of following roasting 3～4 hours.
Among the present invention,, the high-temperature behavior of high-strength insulating brick and the raising of hot strength there is tangible improvement to the alkalimetal oxide of the raw materials for production of high-strength insulating brick and the control of ferriferous oxide content.Tiny, as to seal spherical pore formation is played crucial effect to the cold crushing strength and the heat-proof quality of high-strength insulating brick.Extrusion under vacuum technology, the intensity of favourable raising base substrate and density.The adding of combined binder, the burning till of the formation of favourable goods miniature spherical sealed porosity and goods, new firing process, promote organic fine particles in accordance with regulations program require to burn to lose and discharge, thereby promote the formation of goods miniature spherical sealed porosity.
Beneficial effect: high-strength insulating brick of the present invention, have resistance to elevated temperatures and hot strength preferably, good anti-erosion and heat-proof quality, can be widely used in compensation combustion type CO waste heat boiler, petrochemical industry pyrolyzer and the various industrial furnaces that directly contact flame.Its manufacture method is simple, is easy to realize.
Embodiment:
Embodiment 1:
With 30 parts of αYang Hualv fine powders (320 order), 49.5 parts of mullite fine powders (100 orders and 220 orders are by the mixture of 3.5: 6.5 mass ratio), 10 parts of kaolin, (particle diameter is 0.8～1.5mm), 8 part of combined binder and 10 parts of water to 2.5 parts of polystyrene spheres, through mixing evenly after, adopt extrusion under vacuum.After 1 day, drying is 6 days under 70 ℃ through seasoning for base substrate, and the dry back remaining moisture content of base substrate is 1.5-2%.Burn till with pushed bat kiln or tunnel furnace all can, burn till to be controlled under the oxygen-enriched atmosphere and carry out, 1500 ℃-1550 ℃ of firing temperatures, roasting 3 hours.The cooling back is carried out precision work according to desired size and is the high temperature insulating brick.
Embodiment 2:
High-strength insulating brick, with 25 parts of αYang Hualvs (320 order), 48 parts of mullite fine powders (100 orders and 220 orders are by the mixture of 3.5: 6.5 mass ratio), 15 parts of kaolin, (particle diameter is 0.8～1.5mm), 9 part of combined binder and 12 parts of water to 3 parts of polystyrene spheres, through mixing evenly after, adopt extrusion under vacuum.After 2 days, drying is 7 days under 60 ℃ through seasoning for base substrate, and the dry back remaining moisture content of base substrate is 1.5-2%.Burn till with pushed bat kiln or tunnel furnace all can, burn till to be controlled under the oxygen-enriched atmosphere and carry out, 1500 ℃-1550 ℃ of firing temperatures, roasting 4 hours.The cooling back is carried out precision work according to desired size and is the high temperature insulating brick.
Embodiment 3:
High-strength insulating brick, with 30 parts of αYang Hualvs (320 order), 35 parts of mullite fine powders (100 orders and 220 orders are by the mixture of 3.5: 6.5 mass ratio), 20 parts of kaolin, (particle diameter is 0.8～1.5mm), 11 part of combined binder and 15 parts of water to 4 parts of polystyrene spheres, through mixing evenly after, adopt extrusion under vacuum.After 2 days, drying is 5 days under 80 ℃ through seasoning for base substrate, and the dry back remaining moisture content of base substrate is 1.5-2%.Burn till with pushed bat kiln or tunnel furnace all can, burn till to be controlled under the oxygen-enriched atmosphere and carry out, 1500 ℃-1550 ℃ of firing temperatures, roasting 3.5 hours.The cooling back is carried out precision work according to desired size and is the high temperature insulating brick.
Embodiment 4:
High-strength insulating brick, with 15 parts of αYang Hualvs (320 order), 60 parts of mullite fine powders (100 orders and 220 orders are by the mixture of 3.5: 6.5 mass ratio), 14 parts of kaolin, (particle diameter is 0.8～1.5mm), 8 part of combined binder and 12 parts of water to 3 parts of polystyrene spheres, through mixing evenly after, adopt extrusion under vacuum.After 2 days, dry atmosphere is 5 days under 80 ℃ through seasoning for base substrate, and the dry back remaining moisture content of base substrate is 1.5-2%.Burn till with pushed bat kiln or tunnel furnace all can, burn till to be controlled under the oxygen-enriched atmosphere and carry out, burn till 1500 ℃-1550 ℃ of humidity, roasting 3.5 hours.The cooling back is carried out precision work according to desired size and is the high temperature insulating brick.
Embodiment 5:
High temperature insulating brick of the present invention, performance test results is as follows:
The physicals of table 1 high-strength insulating brick of the present invention
| Volume density/g.cm -3 | Reheating linear change rate on reheating/% | Compressive strength/MPa | Folding strength/MPa | Thermal conductivity/W. (m.k -1) | Thermal shock resistance/time (1000 ℃ of air coolings) |
| ＜1 | -1 | ＞12 | ＞10 | ＜0.28 | ≥25 |
Claims (7)
1, a kind of high-strength insulating brick is characterized in that it comprises the component of following parts by weight:
15～30 parts of αYang Hualv fine powders
35～60 parts of mullite fine powders
10～20 parts of kaolin
2.5～4 parts of organic fine particles pore-forming materials
8～11 parts of combined binders
10～15 parts in water.
2, high-strength insulating brick according to claim 1 is characterized in that described αYang Hualv fine powder is 320 orders.
3, high-strength insulating brick according to claim 1 is characterized in that described mullite fine powder is 100～220 orders.
4, high-strength insulating brick according to claim 1 is characterized in that described organic fine particles pore-forming material particle diameter is 0.8～1.5mm.
5,, it is characterized in that described organic fine particles pore-forming material is a polystyrene sphere according to claim 1 or 4 described high-strength insulating bricks.
6, high-strength insulating brick according to claim 1 is characterized in that described combined binder is SiO
2, ZrO
2, Cr
2O
3Pressed 2: 3: 3 with MgO: the mixture of 2 mass ratioes.
7, make the method for the described high-strength insulating brick of claim 1, it is characterized in that it comprises the steps:
(1) αYang Hualv fine powder, mullite fine powder, kaolin, organic fine particles pore-forming material, combined binder and the water with formula ratio is mixed to evenly by formula ratio;
(2) material behind the mixing is through the extrusion molding of extrusion under vacuum machine;
(3) after 1～2 day, drying is 5～7 days under 60～90 ℃ through seasoning in the adobe of moulding;
(4) 1500-1550 ℃ of following roasting 3～4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100219742A CN101343185B (en) | 2008-08-20 | 2008-08-20 | High-strength insulating brick and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100219742A CN101343185B (en) | 2008-08-20 | 2008-08-20 | High-strength insulating brick and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101343185A true CN101343185A (en) | 2009-01-14 |
| CN101343185B CN101343185B (en) | 2011-08-24 |
Family
ID=40245324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100219742A Expired - Fee Related CN101343185B (en) | 2008-08-20 | 2008-08-20 | High-strength insulating brick and preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101343185B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838149A (en) * | 2010-04-06 | 2010-09-22 | 东台市节能耐火材料厂 | Raw materials and preparation method of anti-corrosion mullite brick |
| CN101481256B (en) * | 2009-02-20 | 2011-12-14 | 范圣良 | Process for manufacturing high temperature resistant Hough type heat preserving plate |
| CN104478474A (en) * | 2014-12-23 | 2015-04-01 | 山东鲁阳股份有限公司 | Light refractory brick and preparation method thereof |
| CN108623295A (en) * | 2018-07-03 | 2018-10-09 | 贵州大学 | A kind of technique preparing insulating brick coproduction acid |
| CN109626969A (en) * | 2019-02-27 | 2019-04-16 | 佛山石湾鹰牌陶瓷有限公司 | The preparation method of insulating brick |
| CN109650939A (en) * | 2019-02-27 | 2019-04-19 | 河源市东源鹰牌陶瓷有限公司 | Insulating brick |
| CN110002860A (en) * | 2019-02-27 | 2019-07-12 | 鹰牌陶瓷实业（河源）有限公司 | Corundum-mullite insulating brick |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303834A (en) * | 1999-11-22 | 2001-07-18 | 冶金工业部洛阳耐火材料研究院 | Corundum-mullite product |
-
2008
- 2008-08-20 CN CN2008100219742A patent/CN101343185B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481256B (en) * | 2009-02-20 | 2011-12-14 | 范圣良 | Process for manufacturing high temperature resistant Hough type heat preserving plate |
| CN101838149A (en) * | 2010-04-06 | 2010-09-22 | 东台市节能耐火材料厂 | Raw materials and preparation method of anti-corrosion mullite brick |
| CN104478474A (en) * | 2014-12-23 | 2015-04-01 | 山东鲁阳股份有限公司 | Light refractory brick and preparation method thereof |
| CN104478474B (en) * | 2014-12-23 | 2017-09-22 | 山东鲁阳股份有限公司 | A kind of light fire brick and preparation method thereof |
| CN108623295A (en) * | 2018-07-03 | 2018-10-09 | 贵州大学 | A kind of technique preparing insulating brick coproduction acid |
| CN109626969A (en) * | 2019-02-27 | 2019-04-16 | 佛山石湾鹰牌陶瓷有限公司 | The preparation method of insulating brick |
| CN109650939A (en) * | 2019-02-27 | 2019-04-19 | 河源市东源鹰牌陶瓷有限公司 | Insulating brick |
| CN110002860A (en) * | 2019-02-27 | 2019-07-12 | 鹰牌陶瓷实业（河源）有限公司 | Corundum-mullite insulating brick |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101343185B (en) | 2011-08-24 |
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Granted publication date: 20110824 Termination date: 20170820 |