CN104788109B - A kind of high-strength micropore heat insulating casting material and preparation method thereof - Google Patents
A kind of high-strength micropore heat insulating casting material and preparation method thereof Download PDFInfo
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- CN104788109B CN104788109B CN201510163820.7A CN201510163820A CN104788109B CN 104788109 B CN104788109 B CN 104788109B CN 201510163820 A CN201510163820 A CN 201510163820A CN 104788109 B CN104788109 B CN 104788109B
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Abstract
The invention belongs to technical field of refractory materials, more particularly to a kind of high-strength micropore heat insulating casting material and preparation method thereof；High-strength micropore heat insulating casting material, it uses following raw material：a‑Al2O3 Fine powder, activity SiO2Micro mist, industrial aluminium hydroxide and tetraethyl orthosilicate, each raw material weight percentage are as follows：30% to 40% a Al2O3 Fine powder, 20 to 25% SiO2Fine powder and 5 to 8% tetraethyl orthosilicate；The bonding agent and 0.1 to 0.05% coagulant of addition 2 to 7% are also needed in addition.The preparation method of high-strength micropore heat insulating casting material is as follows：First by a Al2O3 Fine powder, activity SiO2Micro mist and industrial aluminium hydroxide are mixed 13 minutes using ball mill wears into fine powder；Bonding agent, tetraethyl orthosilicate and coagulant are subsequently adding, are mixed 35 minutes using planetary stirring machine, then packed, the scene of being transported to adds water to stir and can be used.The present invention provides a kind of high-strength micropore heat insulating casting material that hole diameter distribution is uniform and heat insulation and preservation effect is good and preparation method thereof.
Description
Technical field
The invention belongs to technical field of refractory materials, more particularly to a kind of high-strength micropore heat insulating casting material and its preparation side
Method.
Background technology
Refractory material has good resistance to elevated temperatures, and good heat preservation and insulation to high temperature, in steel, water
Mud, petrochemical industry, glass industry are widely used.With energy-saving, environmental requirement continuous improvement, with good heat-insulated, guarantor
The lightweight refracrory of warm nature energy has obtained great development and application.Wherein, light weight castable refractory is due to construction party
Just, low production cost and liner body overall performance is good etc. that advantage receives special attention.Due to traditional lightweight castable, stomata
Size is big and aperture more than in grade not, when using under the high temperature conditions, because radiant heat transfer and convection heat transfer' heat-transfer by convection aggravate, heat conduction
Coefficient is raised, and reduces the heat insulation and preservation effect of refractory material, is wasted the energy, is generated destruction to environment.
The content of the invention
It is an object of the invention to overcome it is above-mentioned it is of the prior art it is not enough provide a kind of hole diameter distribution it is uniform and every
High-strength micropore heat insulating casting material of hot high insulating effect and preparation method thereof.
The technical proposal of the invention is realized in this way：A kind of high-strength micropore heat insulating casting material, it uses following raw material：
α-Al2O3 Fine powder, activity SiO2Micro mist, industrial aluminium hydroxide and tetraethyl orthosilicate, each raw material weight percentage are as follows：30% to
40% α-Al2O3 Fine powder, 20 to 25% SiO2Fine powder and 5 to 8% tetraethyl orthosilicate；The combination of addition 2 to 7% is also needed in addition
Agent and 0.1 to 0.05% coagulant.
α-the Al2O3 Fine powder, activity SiO2The granularity of micro mist, industrial aluminium hydroxide and tetraethyl orthosilicate is no more than 180
Mesh, described bonding agent is the aluminous cement that mass percent is 60% to 75%, and described coagulant is magnesium chloride or poly-
Aluminium chloride.
A kind of preparation method of high-strength micropore heat insulating casting material, the method is as follows：First by α-Al2O3 Fine powder, activity
SiO2Micro mist and industrial aluminium hydroxide wear into fine powder in 1-3 minutes using ball mill mixing；It is subsequently adding bonding agent, tetraethyl orthosilicate
And coagulant, using planetary stirring machine mixing 3-5 minutes, then to pack, the scene of being transported to adds water to stir and can be used.
The good effect that technical scheme is produced is as follows：High-strength micropore heat insulating casting material of the invention, using work
Industry aluminium hydroxide is reacted to form micropore with tetraethyl orthosilicate, and the product mullitization under applied at elevated temperature, micropore is homogenized into one
Step homogenizing, forms 10-10~10-9M stomatas, hole diameter distribution is uniform, and average 500 DEG C of thermal conductivity factor is up to 0.026~0.015
W/mk, heat preservation and insulation is suitable with fibrous material, and the material has thermal shock resistance and intensity higher, this anti-strip
The invention of castable and preparation method solves that castable hole diameter is big, skewness, the fast technical barrier of heat conduction, and by force
Degree is high, thermal shock resistance is strong, energy-saving, and extends the service life of kiln lining.
Specific embodiment
Embodiment one
A kind of high-strength micropore castable, each raw material weight percentage is as follows：α-Al2O3 Fine powder：39.9%, active SiO2It is micro-
Powder 20%, industrial aluminium hydroxide：30%, tetraethyl orthosilicate：5%, bonding agent：5%, coagulant %0.1%.
α-Al are used in the present embodiment2O3 Fine powder, activity SiO2Micro mist, industrial aluminium hydroxide and tetraethyl orthosilicate are original
Material, its granularity is 200 mesh, and described bonding agent is the aluminous cement that mass percent is 75%, and described coagulant is chlorine
Change magnesium.
The preparation method of high-strength micropore heat insulating casting material is as follows in the present embodiment：First by α-Al2O3 Fine powder, activity SiO2
Micro mist and industrial aluminium hydroxide wear into fine powder in 1-3 minutes using ball mill mixing；It is subsequently adding bonding agent, tetraethyl orthosilicate and rush
Solidifying agent, using planetary stirring machine mixing 3-5 minutes, added water stirring, and amount of water is the 3%~8% of gross mass.
After the completion of stirring, the hole diameter distribution of finished product castable is 10-10~10-9M, hole diameter distribution is uniform, leads
Average 500 DEG C of hot coefficient is in 0.026W/mk.
Embodiment two
A kind of high-strength micropore castable, each raw material weight percentage is as follows：α-Al2O3 Fine powder：20%, active SiO2It is micro-
Powder：35%, industrial aluminium hydroxide：34.95%, tetraethyl orthosilicate：5%, bonding agent：5%, coagulant %：0.05%.
The present embodiment uses α-Al2O3 Fine powder, activity SiO2Micro mist, industrial aluminium hydroxide and tetraethyl orthosilicate are raw material,
Granularity is 180 mesh, and described bonding agent is the aluminous cement that mass percent is 60%, and described coagulant is polychloride
Aluminium.
The preparation method of the high-strength micropore heat insulating casting material in the present embodiment is as follows：First by α-Al2O3 Fine powder, activity
SiO2Micro mist and industrial aluminium hydroxide wear into fine powder in 1-3 minutes using ball mill mixing；It is subsequently adding bonding agent, tetraethyl orthosilicate
And coagulant, using planetary stirring machine mixing 3-5 minutes, added water stirring.
The hole diameter distribution of the castable for completing is prepared 10 by process above-10~10-9M, hole diameter distribution is equal
Even, average 500 DEG C of thermal conductivity factor is in 0.015W/mk.
Embodiment three
A kind of high-strength micropore heat insulating casting material, each raw material weight percentage is as follows：α-Al2O3 Fine powder：20%, active SiO2
Micro mist：35%, industrial aluminium hydroxide：34.95%, tetraethyl orthosilicate：5%, bonding agent：5%, coagulant：0.05%.
The present embodiment uses α-Al2O3 Fine powder, activity SiO2Micro mist, industrial aluminium hydroxide and tetraethyl orthosilicate are raw material,
Equal 200 mesh of granularity, described bonding agent is the aluminous cement that mass percent is 60%, and described coagulant is polyaluminium chloride.
A kind of preparation method of high-strength micropore heat insulating casting material is as follows：First by α-Al2O3 Fine powder, activity SiO2Micro mist and
Industrial aluminium hydroxide wears into fine powder in 1-3 minutes using ball mill mixing；Bonding agent, tetraethyl orthosilicate and coagulant are subsequently adding,
Using planetary stirring machine mixing 3-5 minutes, added water stirring.
The hole diameter distribution of high-strength micropore heat insulating casting material of completion is prepared in the present embodiment 10-10~10-9M, gas
Pore diameter distribution is uniform, and average 500 DEG C of thermal conductivity factor is in 0.015W/mk.
Three performance indications such as following tables of the high-strength micropore castable being prepared into implementing of the present invention：
Prior art prepares bulk density and is less than 0.5 g/cm3Method prepare castable typically poured using ceramic fibre
Material feeding, its physical and chemical index is as follows：
The high-strength micropore castable of the present invention is in the case where bulk density is suitable, and intensity is higher, with preferable anti-air-flow
Performance of flushing, good thermal shock stability, the performance with stronger resistance temperature change, not easy to crack, thermal conductivity factor is low, heat-insulated
Good heat preservation performance, has greatly saved the energy.
Claims (3)
1. a kind of high-strength micropore heat insulating casting material, it is characterised in that：It uses following raw material：α-Al2O3 Fine powder, activity SiO2
Micro mist, industrial aluminium hydroxide and tetraethyl orthosilicate, each raw material weight percentage are as follows：30% to 40% α-Al2O3 Fine powder, 20 to
25% SiO2Fine powder and 5 to 8% tetraethyl orthosilicate；Also need the bonding agent and 0.1 to 0.05% rush of addition 2 to 7% solidifying in addition
Agent, remainder is industrial aluminium hydroxide.
2. a kind of high-strength micropore heat insulating casting material according to claim 1, it is characterised in that：α-the Al2O3 Fine powder, work
Property SiO2The granularity of micro mist, industrial aluminium hydroxide and tetraethyl orthosilicate is no more than 180 mesh, and described bonding agent is mass percent
It is 60% to 75% aluminous cement, described coagulant is magnesium chloride or polyaluminium chloride.
3. it is a kind of as described in claim 1 a kind of preparation method of high-strength micropore heat insulating casting material, it is characterised in that：It is wrapped
Include：First by α-Al2O3 Fine powder, activity SiO2Micro mist and industrial aluminium hydroxide wear into fine powder in 1-3 minutes using ball mill mixing；
Bonding agent, tetraethyl orthosilicate and coagulant are subsequently adding, using planetary stirring machine mixing 3-5 minutes, are then packed, be transported to existing
Field adds water to stir and can be used.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510163820.7A CN104788109B (en) | 2015-04-09 | 2015-04-09 | A kind of high-strength micropore heat insulating casting material and preparation method thereof |
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| CN201510163820.7A CN104788109B (en) | 2015-04-09 | 2015-04-09 | A kind of high-strength micropore heat insulating casting material and preparation method thereof |
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| CN104788109B true CN104788109B (en) | 2017-07-07 |
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| CN106630920A (en) * | 2016-10-11 | 2017-05-10 | 洛阳万基炭素有限公司 | Micro-expansion plasticizing material and construction technology of micro-expansion plasticizing material |
| CN117342849B (en) * | 2023-12-04 | 2024-03-12 | 北京慕湖外加剂有限公司 | Concrete for tubular pile, compressive steaming-free prestressed concrete tubular pile and tubular pile preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0310138A1 (en) * | 1987-10-01 | 1989-04-05 | Friedhelm Klein | Building element and process for its production |
| CN103044044A (en) * | 2013-01-17 | 2013-04-17 | 武汉科技大学 | Lightweight aluminum oxide castable and preparation method thereof |
| CN103396126A (en) * | 2013-07-16 | 2013-11-20 | 安徽瑞泰新材料科技有限公司 | Refractory castable and using method thereof |
| CN103496993A (en) * | 2013-09-23 | 2014-01-08 | 武汉科技大学 | High-strength calcium hexa-aluminate light heat insulation material and preparation method thereof |
-
2015
- 2015-04-09 CN CN201510163820.7A patent/CN104788109B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0310138A1 (en) * | 1987-10-01 | 1989-04-05 | Friedhelm Klein | Building element and process for its production |
| CN103044044A (en) * | 2013-01-17 | 2013-04-17 | 武汉科技大学 | Lightweight aluminum oxide castable and preparation method thereof |
| CN103396126A (en) * | 2013-07-16 | 2013-11-20 | 安徽瑞泰新材料科技有限公司 | Refractory castable and using method thereof |
| CN103496993A (en) * | 2013-09-23 | 2014-01-08 | 武汉科技大学 | High-strength calcium hexa-aluminate light heat insulation material and preparation method thereof |
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