CN103601518A - Refractory material - Google Patents
Refractory material Download PDFInfo
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- CN103601518A CN103601518A CN201310579176.2A CN201310579176A CN103601518A CN 103601518 A CN103601518 A CN 103601518A CN 201310579176 A CN201310579176 A CN 201310579176A CN 103601518 A CN103601518 A CN 103601518A
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- mullite
- micro mist
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Abstract
The invention provides a refractory material which is used for solving the technical problems of hearth air leakage and bad effects in thermal insulation, energy conservation and environmental friendliness caused by low refractoriness and low strength of the refractory material in the existing cremator. The refractory material consists of 2-8 parts of Al2O3 micro powder, 2-8 parts of SiO2 micro powder, 0.1-20 parts of mullite with diameter of 5-8mm, 18-24 parts of mullite with diameter of 3-5mm, 16-26 parts of mullite with diameter of 1-3mm, 6-20 parts of mullite with diameter of 0.1-1mm, 10-32 parts of cement, 5-12 parts of aluminum micro powder and 8-12 parts of expanding agent. The refractory material provided by the invention can be widely applied to the cremator hearth.
Description
Technical field
The present invention relates to a kind of material, particularly relate to a kind of cremator refractory materials.
Background technology
We know, cremator burner hearth is being born the function of incinerating remains, and the quality of the refractory materials of building by laying bricks or stones in burner hearth is very large to the influential effect of the efficiency of combustion of remains and environmental protection and energy saving.Existing refractory materials refractoriness and compressive strength lower (refractoriness is that 1500 ℃ of left and right, compressive strength are 15MPa), be subject to for a long time high-temperature roasting ratio to be easier to peel off, thereby cause the gas leakage of Cremation Machine burner hearth, insulation, energy-conservation and environment protecting is poor, cannot meet the demand of funeral and interment cremation equipment development.
Summary of the invention
In order to solve existing refractory materials due to refractoriness and compressive strength is low, be subject to for a long time high-temperature roasting ratio to be easier to peel off, thereby cause the gas leakage of Cremation Machine burner hearth, insulation, the technical problem that energy-conservation and environment protecting is poor, the invention provides a kind of refractoriness and compressive strength high, can make Cremation Machine burner hearth good seal, insulation, the refractory materials that energy-conservation and environment protecting is good.
For this reason, the invention provides a kind of refractory materials, it counts by weight percentage, and following component, consists of: 2～8 parts of Al
2o
3micro mist, the SiO of 2～8 parts
2micro mist, the diameter of 0.1～20 part are that 5～8mm mullite, the diameter of 18～24 parts are that 3～5mm mullite, the diameter of 16～26 parts are that 1～3mm mullite, the diameter of 6～20 parts are 0.1m mullite, the cement of 10～32 parts, the aluminium micro mist of 5～12 parts and the swelling agent of 8～12 parts.
The preferred technical scheme of the present invention is that refractory materials counts by weight percentage, and following component, consists of: 4 parts of Al
2o
3micro mist, 3 parts of SiO
2micro mist, 13 parts of diameters are that 5～8mm mullite, 15 parts of diameters are that 3～5mm mullite, 20 parts of diameters are that 1～3mm mullite, 14 parts of diameters are 0.1m mullite, 18 parts of cement, 8 parts of aluminium micro mists and 9 parts of swelling agents.
The preferred technical scheme of the present invention is the mixture that swelling agent adopts any one or both in sillmanite and kyanite.
The preferred technical scheme of the present invention is Al
2o
3al in micro mist
2o
3content>=98%, maximum diameter is not more than the fraction of particle > 85% of 5 μ m.
The preferred technical scheme of the present invention is SiO
2siO in micro mist
2content>=90%, maximum diameter is not more than the fraction of particle > 85% of 1 μ m.
The preferred technical scheme of the present invention is Al in mullite
2o
3content>=60%, Fe
2o
3content≤1%, volume density≤1.2g/cm
3, apparent porosity>=22%, compressive strength>=12MPa, mean pore size≤50 μ m, mullite crystal content>=45%.
The preferred technical scheme of the present invention is Al in cement
2o
3>=60%.
The preferred technical scheme of the present invention is Al in aluminium micro mist
2o
3>=85%, 320 object fraction of particle>=65%.
In refractory materials of the present invention, cement is solidification material, plays the at room temperature effect of hardened forming; The main raw that mullite is built as refractory materials, can increase material internal snap-in force after size particles collocation, improves the strength of materials; Al
2o
3micro mist and aluminium micro mist, for adding material, can increase performance and the heat-resisting ability of material; Swelling agent is as anti-shrink-down material, can reduce at high temperature the ftracture generation of situation of material; SiO
2mobility when micro mist can increase material moisture state, fills space and reduces the construction intensity before unhardened moulding.
The composition of refractory materials of the present invention can evenly obtain refractory material casting material by quality of materials percentage mix, and then casting, dries naturally, through high-temperature roasting, makes free CaO and Al
2o
3react, form high-melting-point CA6 and CA2, improved hot strength and the refractoriness of refractory materials.The present invention compares with the refractory materials of prior art, has the features such as intensity is high, refractoriness is high and thermal shock resistance is good, long service life, energy-saving and environmental protection.
Embodiment
Below by embodiment, the present invention will be further described.
Embodiment 1:
A cremator high alumina refractory, its raw material by following weight is prepared from after mixing, stirring: Al
2o
32 parts of micro mists, SiO
22 parts of micro mists, diameter are that 0.1 part of 5mm mullite, diameter are that 18 parts of 3mm mullites, diameter are that 16 parts of 1mm mullites, diameter are 8 parts of 6 parts of 0.1mm mullites, 10 parts of cement, 5 parts of aluminium micro mists and swelling agent sillmanites.The moulding of above-mentioned materials disposal pouring is obtained to Cremation Machine refractory brick, after cast, naturally dry, through high-temperature roasting, obtain finished product alumina firebrick, its refractoriness is 1970 ℃ after testing, and cold crushing strength is 46.5MPa, it is 1700 ℃ that 0.2MPa loading softening starts temperature, and apparent porosity is 22.2%.
Embodiment 2:
A cremator high alumina refractory, its raw material by following weight is prepared from after mixing, stirring: Al
2o
34 parts of micro mists, SiO
23 parts of micro mists, diameter are that 13 parts of 6.5mm mullites, diameter are that 15 parts of 4mm mullites, diameter are that 20 parts of 2mm mullites, diameter are 9 parts of 14 parts of 0.5mm mullites, 18 parts of cement, 8 parts of aluminium micro mists and swelling agent kyanites.The moulding of above-mentioned materials disposal pouring is obtained to Cremation Machine refractory brick, after cast, naturally dry, through high-temperature roasting, obtain finished product alumina firebrick, its refractoriness is 1980 ℃ after testing, and cold crushing strength is 47.2MPa, it is 1720 ℃ that 0.2MPa loading softening starts temperature, and apparent porosity is 22.1%.
Embodiment 3:
A cremator high alumina refractory, its raw material by following weight is prepared from after mixing, stirring: Al
2o
38 parts of micro mists, SiO
28 parts of micro mists, diameter are that 20 parts of 8mm mullites, diameter are that 24 parts of 5mm mullites, diameter are that 26 parts of 3mm mullites, diameter are 12 parts of 20 parts of lmm mullites, 32 parts of cement, 12 parts of aluminium micro mists and swelling agents (mixture of sillmanite and kyanite).The moulding of above-mentioned materials disposal pouring is obtained to Cremation Machine refractory brick, after cast, naturally dry, through high-temperature roasting, obtain finished product alumina firebrick, its refractoriness is 1976 ℃ after testing, and cold crushing strength is 46.5MPa, it is 1690 ℃ that 0.2MPa loading softening starts temperature, and apparent porosity is 22.3%.
In each component of above-mentioned three embodiment, Al
2o
3al in micro mist
2o
3content>=98%, maximum diameter is not more than the fraction of particle > 85% of 5 μ m; SiO
2siO in micro mist
2content>=90%, maximum diameter is not more than the fraction of particle > 85% of 1 μ m; Al in mullite
2o
3content>=60%, Fe
2o
3content≤1%, volume density≤1.2g/cm
3, apparent porosity>=22%, compressive strength>=12MPa, mean pore size≤50 μ m, mullite crystal content>=45%; Cement adopts High-Alumina cement, Al
2o
3content>=60%; Al in aluminium micro mist
2o
3content>=85%, 320 object fraction of particle>=65%.Mullite is preferably micro-pore mullite.
Claims (8)
1. a refractory materials, is characterized in that, consists of: 2～8 parts of Al following component by weight
2o
3micro mist, the SiO of 2～8 parts
2micro mist, the diameter of 0.1～20 part are that 5～8mm mullite, the diameter of 18～24 parts are that 3～5mm mullite, the diameter of 16～26 parts are that 1～3mm mullite, the diameter of 6～20 parts are 0.1～lmm mullite, the cement of 10～32 parts, the aluminium micro mist of 5～12 parts and the swelling agent of 8～12 parts.
2. refractory materials according to claim 1, is characterized in that being comprised of following component by weight: the Al of 4 parts
2o
3micro mist, the SiO of 3 parts
2micro mist, the diameter of 13 parts are that 5～8mm mullite, the diameter of 15 parts are that 3～5mm mullite, the diameter of 20 parts are that 1～3mm mullite, the diameter of 14 parts are 0.1～lmm mullite, the cement of 18 parts, the aluminium micro mist of 8 parts and the swelling agent of 9 parts.
3. refractory materials according to claim 1 and 2, is characterized in that described swelling agent is the mixture of any one or both in sillmanite and kyanite.
4. refractory materials according to claim 1 and 2, is characterized in that described Al
2o
3al in micro mist
2o
3content>=98%, maximum diameter is not more than the fraction of particle > 85% of 5 μ m.
5. refractory materials according to claim 4, is characterized in that described SiO
2siO in micro mist
2content>=90%, maximum diameter is not more than the fraction of particle > 85% of 1 μ m.
6. refractory materials according to claim 5, is characterized in that Al in described all mullites
2o
3content>=60%, Fe
2o
3content≤1%, volume density≤1.2g/cm
3, void content>=22%, compressive strength>=12MPa, mean pore size≤50 μ m, mullite crystal content>=45%.
7. refractory materials according to claim 6, is characterized in that Al in described cement
2o
3content>=60%.
8. refractory materials according to claim 7, is characterized in that Al in described aluminium micro mist
2o
3content>=85%, 320 object fraction of particle>=65%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310579176.2A CN103601518A (en) | 2013-11-18 | 2013-11-18 | Refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310579176.2A CN103601518A (en) | 2013-11-18 | 2013-11-18 | Refractory material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103601518A true CN103601518A (en) | 2014-02-26 |
Family
ID=50119804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310579176.2A Pending CN103601518A (en) | 2013-11-18 | 2013-11-18 | Refractory material |
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| Country | Link |
|---|---|
| CN (1) | CN103601518A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747494A (en) * | 2016-11-28 | 2017-05-31 | 北京东峰兴达耐火材料有限公司 | Cremator a heatable brick bed face castable |
| CN110723978A (en) * | 2019-10-30 | 2020-01-24 | 浙江自立高温科技股份有限公司 | Microporous mullite brick for permanent layer of steel ladle and preparation method thereof |
| CN113045323A (en) * | 2021-04-08 | 2021-06-29 | 中钢洛耐科技股份有限公司 | Gradient heat-interception heat-preservation material and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215176A (en) * | 2007-12-28 | 2008-07-09 | 中国钢研科技集团公司 | High-strength low heat conductivity energy-saving fireproof material |
-
2013
- 2013-11-18 CN CN201310579176.2A patent/CN103601518A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215176A (en) * | 2007-12-28 | 2008-07-09 | 中国钢研科技集团公司 | High-strength low heat conductivity energy-saving fireproof material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747494A (en) * | 2016-11-28 | 2017-05-31 | 北京东峰兴达耐火材料有限公司 | Cremator a heatable brick bed face castable |
| CN110723978A (en) * | 2019-10-30 | 2020-01-24 | 浙江自立高温科技股份有限公司 | Microporous mullite brick for permanent layer of steel ladle and preparation method thereof |
| CN113045323A (en) * | 2021-04-08 | 2021-06-29 | 中钢洛耐科技股份有限公司 | Gradient heat-interception heat-preservation material and preparation method and application thereof |
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Application publication date: 20140226 |