CN102491767B - High-strength mullite pouring material for cement kiln - Google Patents
High-strength mullite pouring material for cement kiln Download PDFInfo
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- CN102491767B CN102491767B CN 201110397918 CN201110397918A CN102491767B CN 102491767 B CN102491767 B CN 102491767B CN 201110397918 CN201110397918 CN 201110397918 CN 201110397918 A CN201110397918 A CN 201110397918A CN 102491767 B CN102491767 B CN 102491767B
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- Prior art keywords
- mass percent
- mullite
- strength
- particle diameter
- cement kiln
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 68
- 239000000463 material Substances 0.000 title claims abstract description 42
- 239000004568 cement Substances 0.000 title claims abstract description 41
- 239000002245 particle Substances 0.000 claims abstract description 46
- 239000000843 powder Substances 0.000 claims abstract description 30
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims abstract description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003595 mist Substances 0.000 claims description 24
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 229910052849 andalusite Inorganic materials 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 229910052594 sapphire Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 8
- 101710194948 Protein phosphatase PhpP Proteins 0.000 description 4
- HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011021 lapis lazuli Substances 0.000 description 1
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- Ceramic Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a high-strength mullite pouring material for a cement kiln, which comprises the following components: a mullite with a particle size of 8-5 mm, a mullite with a particle size of 5-3 mm, a mullite with a particle size of 3-1 mm, a mullite with a particle size of 1-0 mm, SiO2 micro powder, SiC powder, white fused alumina powder, alpha-Al2O3 micro powder, pure calcium aluminate cement and andalusite. The high-strength mullite pouring material for the cement kiln has the advantages of high temperature resistance, high compression strength, high rupture strength, good abrasion performance and less amount of added water during the use. The high-strength mullite pouring material for the cement kiln can satisfy the long-time use of a cement kiln mouth, a coal injection pipe and other parts.
Description
Technical field
The present invention relates to a kind of unshape refractory, particularly a kind of mullite pouring material for cement kiln.
Background technology
At present, be that raw-material cement kiln is lower with the mould material hot strength with mullite, thermostability is bad, existing mould material, usually maximum operation (service) temperature is between 1400～1600 ℃, and compressive strength and folding strength are low, and 1100 ℃ of line velocity of variation are between-0.5%～-0.3%, heat-shock resistance is poor, normal temperature wear resistance 〉=4.8cc (after 1100 ℃ of burnings), during use, amount of water is big, be generally 6%～7%, generally can't satisfy the long-time use at positions such as cement kiln outlet, coal powder injection pipe.
Summary of the invention
Aspects such as the hot strength that the objective of the invention is to exist at the existing mullite pouring material described in the background technology, thermostability deficiency, provide that a kind of Heat stability is good, wear resistance are strong, the high-strength mullite pouring material of cement kiln of good fluidity.
The technical scheme that can realize goal of the invention of the present invention is as follows:
The high-strength mullite pouring material of a kind of cement kiln, its component and mass percent thereof are: particle diameter is the mullite 0%～11% of 8-5mm, and particle diameter is the mullite 11%～36% of 5-3mm, and particle diameter is the mullite 10%～24% of 3-1mm, particle diameter is the mullite 8%～25% of 1-0mm, SiO
2Micro mist 3%～6%, SiC powder 0%～7%, white alundum powder 6%～12%, α-Al
2O
3Micro mist 4%～10%, pure calcium aluminate cement 3%～8%.
Described cement kiln is with comprising also in the component of high-strength mullite pouring material that mass percent is 0%～0.4% tripoly phosphate sodium STPP.
Described cement kiln is with comprising also in the component of high-strength mullite pouring material that mass percent is 0%～0.4% Sodium hexametaphosphate 99.
In order to strengthen the hot strength after the mould material cast, reduce the line velocity of variation, described cement kiln is with the andaluzite that also comprises mass percent 0%～7% in the component of high-strength mullite pouring material.
This cement kiln with component and the mass percent thereof of high-strength mullite pouring material is: particle diameter is that the mass percent of the mullite of 8-5mm is 3%～7%, particle diameter is that the mass percent of the mullite of 5-3mm is 20%～30%, particle diameter is that the mass percent of the mullite of 3-1mm is 20%～30%, particle diameter is that the mass percent of the mullite of 1-0mm is 15%～25%, SiO
2The mass percent of micro mist is that the mass percent of 4%～5%, SiC powder is 2%～5%, and the mass percent of white alundum powder is 8%～12%, α-Al
2O
3The mass percent of micro mist is 4%～8%, and the mass percent of pure calcium aluminate cement is 4%～7%.
This cement kiln with component and the mass percent thereof of high-strength mullite pouring material is: particle diameter is that the mass percent of the mullite of 8-5mm is 5%, particle diameter is that the mass percent of the mullite of 5-3mm is 21%, particle diameter is that the mass percent of the mullite of 3-1mm is 24%, particle diameter is that the mass percent of the mullite of 1-0mm is 19%, SiO
2The mass percent of micro mist is 5.5%,, the mass percent of SiC powder is 5%, the mass percent of white alundum powder is 10%, α-Al
2O
3The mass percent of micro mist is 4.5%, and the mass percent of pure calcium aluminate cement is 6%.
This cement kiln with component and the mass percent thereof of high-strength mullite pouring material is: particle diameter is that the mass percent of the mullite of 5-3mm is 31%, particle diameter is that the mass percent of the mullite of 3-1mm is 18%, particle diameter is that the mass percent of the mullite of 1-0mm is 19%, SiO
2The mass percent of micro mist is 5%,, the mass percent of SiC powder is 4%, the mass percent of white alundum powder is 9%, α-Al
2O
3The mass percent of micro mist is 8%, and the mass percent of pure calcium aluminate cement is 6%.
This cement kiln is as follows with component and the mass percent of high-strength mullite pouring material: particle diameter is that the mass percent of the mullite of 5-3mm is 31%, particle diameter is that the mass percent of the mullite of 3-1mm is 19%, particle diameter is that the mass percent of the mullite of 1-0mm is 14%, particle diameter is that the mass percent of the andaluzite of 1-0mm is 5%, SiO
2The mass percent of micro mist is that the mass percent of 5%, SiC powder is 5%, and the mass percent of white alundum powder is 9%, α-Al
2O
3The mass percent of micro mist is 6%, and the mass percent of pure calcium aluminate cement is 6%.
Cement kiln of the present invention is pressure-proof and snap-resistent intensity height with the advantage of high-strength mullite pouring material, Heat stability is good, wear resistance is strong, good fluidity, in the prescription of mould material, mullite aggregate provides good heat-shock resistance, and lapis amiridis is filled between particles of aggregates effectively, thereby has guaranteed compactness, improved ultimate compression strength, andaluzite increases hot strength, reduces the line velocity of variation, SiO
2The adding of micro mist has strengthened flowability and the over-all properties of mould material, and the adding of SiC powder has strengthened resistance to fouling and the thermostability of mould material, and the intervention of tripoly phosphate sodium STPP and Sodium hexametaphosphate 99 improves the flowability of mould material.The adding of pure calcium aluminate cement has improved the associativity of mould material, has in use played short effect of coagulating, α-Al
2O
3The adding of micro mist has strengthened flowability, has improved medium temperature intensity and the hot strength of mould material.
Embodiment
Technical scheme of the present invention is further set forth with the detection data of high-strength mullite pouring material below by three specific embodiments and cement kiln:
Embodiment 1
The high-strength mullite pouring material of a kind of cement kiln of high-strength abrasion-proof, its component and mass percent are as follows: particle diameter is that the mass percent of the mullite of 5-3mm is 31%, particle diameter is that the mass percent of the mullite of 3-1mm is 18%, particle diameter is that the mass percent of the mullite of 1-0mm is 19%, SiO
2The mass percent of micro mist is 5%,, the mass percent of SiC powder is 4%, the mass percent of white alundum powder is 9%, α-Al
2O
3The mass percent of micro mist is 8%, and the mass percent of pure calcium aluminate cement is 6%.In addition, in use, add mass percent and be the flowability that 0.18% tripoly phosphate sodium STPP improves mould material.This mould material maximum operation (service) temperature is 1700 ℃, and volume density is 2.8～3.0g/cm
3110 ℃ of following compressive strength 〉=100MPa, 1100 ℃ of following compressive strength 〉=100MPa, 1500 ℃ of following folding strength 〉=12MPa, line velocity of variation≤-0.3%, heat-shock resistance number of times 〉=50 time (1100 ℃ of water-cooleds), normal temperature wear resistance≤3.9cc (after 1100 ℃ of burnings), during use, amount of water is few, only is 4.5～5.5%.This mould material can be applied to the coal powder injection pipe.
Embodiment 2
The high-strength mullite pouring material of a kind of cement kiln of high-strength abrasion-proof, its component and mass percent thereof are: particle diameter is that the mass percent of the mullite of 8-5mm is 5%, particle diameter is that the mass percent of the mullite of 5-3mm is 21%, particle diameter is that the mass percent of the mullite of 3-1mm is 24%, particle diameter is that the mass percent of the mullite of 1-0mm is 19%, SiO
2The mass percent of micro mist is 5.5%,, the mass percent of SiC powder is 5%, the mass percent of white alundum powder is 10%, α-Al
2O
3The mass percent of micro mist is 4.5%, and the mass percent of pure calcium aluminate cement is 6%.In addition, in use, add mass percent and be the flowability that 0.16% Sodium hexametaphosphate 99 improves mould material.This mould material maximum operation (service) temperature is 1650 ℃, and volume density is 2.7～2.9g/cm
3, 110 ℃ of following compressive strength 〉=110MPa, 1100 ℃ of following compressive strength 〉=100MPa, 1500 ℃ of following folding strength 〉=12MPa, line velocity of variation≤-0.3%, heat-shock resistance number of times 〉=40 time (1100 ℃ of water-cooleds), normal temperature wear resistance≤3.5cc (after 1100 ℃ of burnings), during use, amount of water is 5～6%.This mould material can be applied to the forward and backward kilneye of cement kiln.
Embodiment 3
The high-strength mullite pouring material of a kind of cement kiln of high-strength abrasion-proof, its component and mass percent are as follows: particle diameter is that the mass percent of the mullite of 5-3mm is 31%, particle diameter is that the mass percent of the mullite of 3-1mm is 19%, particle diameter is that the mass percent of the mullite of 1-0mm is 14%, particle diameter is that the mass percent of the andaluzite of 1-0mmm is 5%, SiO
2The mass percent of micro mist is that the mass percent of 5%, SiC powder is 5%, and the mass percent of white alundum powder is 9%, α-Al
2O
3The mass percent of micro mist is 6%, and the mass percent of pure calcium aluminate cement is 6%.In addition, in use, add mass percent and be the flowability that 0.18% tripoly phosphate sodium STPP improves mould material.This mould material maximum operation (service) temperature is 1700 ℃, and volume density is 2.75～2.95g/cm
3110 ℃ of following compressive strength 〉=100MPa, 1100 ℃ of following compressive strength 〉=105MPa, 1500 ℃ of following folding strength 〉=12MPa, line velocity of variation≤-0.25%, heat-shock resistance number of times 〉=50 time (1100 ℃ of water-cooleds), normal temperature wear resistance≤4.1cc (after 1100 ℃ of burnings), during use, amount of water is few, only is 4.5～5.5%.This mould material can be applied to the front and back kilneye of coal powder injection pipe and cement kiln.
Claims (3)
1. high-strength mullite pouring material of cement kiln, it is characterized in that, raw material and mass percent thereof are: particle diameter is that the mass percent of the mullite of 8-5mm is 5%, particle diameter is that the mass percent of the mullite of 5-3mm is 21%, particle diameter is that the mass percent of the mullite of 3-1mm is 24%, particle diameter is that the mass percent of the mullite of 1-0mm is 19%, SiO
2The mass percent of micro mist is that the mass percent of 5.5%, SiC powder is 5%, and the mass percent of white alundum powder is 10%, α-Al
2O
3The mass percent of micro mist is 4.5%, and the mass percent of pure calcium aluminate cement is 6%.
2. the high-strength mullite pouring material of cement kiln, it is characterized in that raw material and mass percent thereof are: particle diameter is that the mass percent of the mullite of 5-3mm is 31%, and particle diameter is that the mass percent of the mullite of 3-1mm is 18%, particle diameter is that the mass percent of the mullite of 1-0mm is 19%, SiO
2The mass percent of micro mist is that the mass percent of 5%, SiC powder is 4%, and the mass percent of white alundum powder is 9%, α-Al
2O
3The mass percent of micro mist is 8%, and the mass percent of pure calcium aluminate cement is 6%.
3. high-strength mullite pouring material of cement kiln, it is characterized in that, raw material and mass percent thereof are: particle diameter is that the mass percent of the mullite of 5-3mm is 31%, particle diameter is that the mass percent of the mullite of 3-1mm is 19%, particle diameter is that the mass percent of the mullite of 1-0mm is 14%, particle diameter is that the mass percent of the andaluzite of 1-0mm is 5%, SiO
2The mass percent of micro mist is that the mass percent of 5%, SiC powder is 5%, and the mass percent of white alundum powder is 9%, α-Al
2O
3The mass percent of micro mist is 6%, and the mass percent of pure calcium aluminate cement is 6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110397918 CN102491767B (en) | 2011-12-05 | 2011-12-05 | High-strength mullite pouring material for cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110397918 CN102491767B (en) | 2011-12-05 | 2011-12-05 | High-strength mullite pouring material for cement kiln |
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|---|---|
| CN102491767A CN102491767A (en) | 2012-06-13 |
| CN102491767B true CN102491767B (en) | 2013-09-11 |
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|---|---|---|---|
| CN 201110397918 Active CN102491767B (en) | 2011-12-05 | 2011-12-05 | High-strength mullite pouring material for cement kiln |
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| CN102826812A (en) * | 2012-08-29 | 2012-12-19 | 江苏恒耐炉料集团有限公司 | Wear-resistant pouring material used for tertiary air pipe elbow of cement kiln |
| CN103011859A (en) * | 2012-12-14 | 2013-04-03 | 内蒙古包钢钢联股份有限公司 | High-temperature expansion joint wear-resistant heat-insulating material in coke dry quenching device and spraying method thereof |
| CN103073311B (en) * | 2013-01-21 | 2014-03-19 | 东海县盛昌石英材料有限公司 | Fast fill pouring material for working lining of swinging chute and preparation method of material thereof |
| CN106854082A (en) * | 2016-12-23 | 2017-06-16 | 江苏恒耐炉料集团有限公司 | Microdilatancy anti-strip kilneye castable |
| CN108530089B (en) * | 2017-03-02 | 2021-08-06 | 上海安可科技股份有限公司 | Refractory castable for tundish baking burner and tundish baking burner |
| CN107500789A (en) * | 2017-08-24 | 2017-12-22 | 浙江科屹耐火材料有限公司 | A kind of mullite pouring material and preparation method thereof |
| CN107840674A (en) * | 2017-11-23 | 2018-03-27 | 焦作金鑫恒拓新材料股份有限公司 | A kind of wear-resisting slide brick of high thermal shock and preparation method thereof |
| CN109020577A (en) * | 2018-09-11 | 2018-12-18 | 郑州荣盛窑炉耐火材料有限公司 | A kind of large-size cement kiln kilneye three anti-castables and preparation method thereof |
| CN110330347A (en) * | 2019-07-26 | 2019-10-15 | 莱芜市荣华耐火材料有限公司 | Ferronickel rotary kiln high-temperature region kiln lining material and its production technology |
| CN111018506B (en) * | 2019-11-28 | 2022-08-26 | 浙江锦诚新材料股份有限公司 | Anti-skinning spray coating for cement kiln preheater |
| CN111704474A (en) * | 2020-07-10 | 2020-09-25 | 中钢南京环境工程技术研究院有限公司 | Mullite refractory castable for ultrahigh-temperature smelting |
| CN111995410B (en) * | 2020-08-24 | 2022-09-27 | 武汉钢铁集团耐火材料有限责任公司 | Lightweight heat-preservation and heat-insulation tundish cover pouring material and preparation method thereof |
| CN113979757B (en) * | 2021-10-25 | 2023-03-28 | 安徽瑞泰新材料科技有限公司 | Castable special for cement kiln opening |
| CN114656264B (en) * | 2022-02-10 | 2023-04-21 | 安徽宁火新材料有限公司 | High-strength castable for salt bath quenching furnace |
| CN114455958A (en) * | 2022-02-21 | 2022-05-10 | 山东金泰高温材料有限公司 | Heating furnace refractory material rapid repairing material, method and system |
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| CN101580401A (en) * | 2009-06-18 | 2009-11-18 | 安徽宁火新材料有限公司 | High-strength wearable casting material |
| CN101665366A (en) * | 2009-10-20 | 2010-03-10 | 瑞泰科技股份有限公司 | Composite abrasion resistant and thermal shock resistant pouring material |
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- 2011-12-05 CN CN 201110397918 patent/CN102491767B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580401A (en) * | 2009-06-18 | 2009-11-18 | 安徽宁火新材料有限公司 | High-strength wearable casting material |
| CN101665366A (en) * | 2009-10-20 | 2010-03-10 | 瑞泰科技股份有限公司 | Composite abrasion resistant and thermal shock resistant pouring material |
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| CN102491767A (en) | 2012-06-13 |
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Denomination of invention: High strength mullite castable for cement kilns Effective date of registration: 20231012 Granted publication date: 20130911 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd. Pledgor: JIANGSU HENGNAI FURNACE CHARGE GROUP Co.,Ltd. Registration number: Y2023980060897 |
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