CN101481240B - Mullite-corundum deflection magnetic core burning bearing seat and preparation method thereof - Google Patents
Mullite-corundum deflection magnetic core burning bearing seat and preparation method thereof Download PDFInfo
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- CN101481240B CN101481240B CN2009100212767A CN200910021276A CN101481240B CN 101481240 B CN101481240 B CN 101481240B CN 2009100212767 A CN2009100212767 A CN 2009100212767A CN 200910021276 A CN200910021276 A CN 200910021276A CN 101481240 B CN101481240 B CN 101481240B
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- mullite
- mgco
- burning
- corundum
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- 229910052593 corundum Inorganic materials 0.000 title claims abstract description 26
- 239000010431 corundum Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims description 12
- 239000002994 raw material Substances 0.000 claims abstract description 33
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 17
- 239000004927 clay Substances 0.000 claims abstract description 16
- 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 claims abstract description 15
- 238000005245 sintering Methods 0.000 claims abstract description 7
- 239000003595 mist Substances 0.000 claims description 13
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 9
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 229910052878 cordierite Inorganic materials 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000001095 magnesium carbonate Substances 0.000 abstract 6
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract 6
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229910052594 sapphire Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000003245 working effect Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a mullite-corundum deflection magnetic core burning seat which is prepared by adding a mineralizer into the following raw materials and sintering; the weight percentage of the raw materials is as follows: electric melting corundum: 35% -45%, fused mullite: 25 to 35 percent; suzhou clay: 20 to 30 percent, and the balance of alpha-Al2O3Micro-powder; the external mineralizer is MgCO3And BaCO3Composition of, wherein MgCO33 to 8 percent of the total weight of the raw materials and BaCO3Is 1 to 3 percent of the total weight of the raw materials. Due to the addition of MgCO3The addition of fine powder is doubled when equal amount of MgO is introduced. MgCO3After decomposing into MgO, the fine powder is uniformly distributed, has high activity and is easy to be mixed with Al in clay2O3、SiO2And carrying out in-situ reaction to generate cordierite. The linear expansion coefficient of the burning seat is reduced due to MgCO3Micro air holes can be formed by decomposition, which is beneficial to improving the thermal shock stability. Controlling MgCO3The addition amount of the cordierite can control the generation amount and the linear expansion coefficient of the cordierite in the burning bearing seat, and the service life of the burning bearing seat can be greatly prolonged.
Description
Technical field
The invention belongs to the made field, relate to the preparation of deflecting yoke core frame for burning, particularly a kind of preparation and method of manufacture of firing mullite-corundum matter deflecting yoke core frame for burning.
Background technology
China deflecting core produce key equipment and the instrument overwhelming majority be nineteen nineties from external introduction, comprise the push pedal of burning till use and hold burning.Begin to take shape to the production of middle and later periods nineteen nineties, wherein largest with Shaanxi Province 4390 factories (the back transformation of the way is called the electric Group Co.,Ltd in Kingsoft, Shaanxi), account for 1/3rd of national ultimate production.China had become world deflecting core production big export country in recent years; Because its advantage on raw material, production cost and scale and benefit; Japan, Korea S, Southeast Asian countries, the U.S., India etc. all use Chinese deflecting core, and the production advantage of China has forced state's deflecting core output such as Japan, Korea S to descend significantly.The electric group company in Kingsoft, Shaanxi Province expands the scale of production several times, newly-increased production line, and yearly capacity has been developed into by 3,500,000 of annual outputs in 1994 and has produced per year above 3,200 ten thousand at present.
Along with the deflecting core production scale enlarges, more and more high to the deflecting core specification of quality, deflecting core holds to burn and can not satisfy current needs with common corundum-mullite refractory.On the one hand, it is higher with the refractory materials price that burning is held in import; On the other hand; Because the deflecting core specification of quality is improved; The former burning of holding can not satisfy production requirement with the corundum-mullite fire resistant materials; It is present 80% to have required the magnetic core yield rate to bring up to from 50% of the beginning of the nineties like the electric group company in Kingsoft, hold that burned refractory causes with deflecting core generation chemical reaction, scrap rate such as the magnetic core xln is thick, strength degradation will descend significantly.In order to improve the market competitiveness, reduce cost, also need increase substantially the work-ing life of holding burned refractory.The holding of Korea S's development at present burnt seat and can be reached more than 100 times work-ing life, and present homemade goods use about 40 times, and looking into newly has report to develop work-ing life about 80 times.Quality product differs greatly both at home and abroad.
The key that kiln furniture material improves the life-span is the raising of anti-thermal shock stability, the raising of intensity.The major influence factors that improves heat-shock resistance is that to hold the true linear expansivity that burns seat little, and Young's modulus is little, chemical reaction and crystal formation does not take place transform, and combined reaction be when temperature takes place sharply to change, and it is little to hold the thermal stresses of burning the generation of seat inside.
Low fire ceramic is used cordierite kiln ware, or adds synthesis of dichroite and prepare Low fire ceramic and use kiln furnitures, and hotblast stove anti-thermal shock, creep resistance brick all have a better effect.But the preparation of interpolation trichroite is held the burning seat and is not reported.
Summary of the invention
Defective or deficiency to above-mentioned prior art exists the objective of the invention is to, and a kind of prescription of firing mullite-corundum matter deflecting yoke core frame for burning and preparation method thereof is provided; The deflecting yoke core frame for burning of the present invention's preparation; Have high-performance and high work-ing life, can improve the product percent of pass of enterprise production deflecting core, reduce the waster rate; Enhance productivity, increase economic benefit.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of mullite-corundum matter deflecting yoke core frame for burning is characterized in that, this mullite-corundum matter deflecting yoke core frame for burning that makes is in following raw material, to add mineralizer to form through sintering;
The weight percent of said raw material is: fused corundom: 35%～45%, and electrofused mullite: 25%～35%; The Suzhou clay: 20%～30%, surplus is α-Al
2O
3Micro mist; The described mineralizer that adds is by MgCO
3And BaCO
3Form, wherein MgCO
3Be 3%～8% of raw material gross weight, BaCO
3Be 1%～3% of raw material gross weight.
The chemical weight percent of said fused corundom consists of: SiO
2: 0.16%, Al
2O
3: 98.98%, Fe
2O
3: 0.25%, CaO:0.01%, MgO:0.02%, K
2O:0.02%, Na
2O:0.03%, IL:0.12%, surplus is an impurity.
The chemical weight percent of said electrofused mullite consists of: SiO
2: 23.10%, Al
2O
3: 75.20%, Fe
2O
3: 0.12%, TiO
2: 0.10%, CaO:0.16%, MgO:0.12%, K
2O:0.20%, Na
2O:0.27%, surplus is an impurity.
The chemical weight percent of said Suzhou clay consists of: SiO
2: 48.25%, Al
2O
3: 37.12%, Fe
2O
3: 0.46%, CaO:0.12%, MgO:0.01%, K
2O:0.45%, Na
2O:0.13%, IL:13.01%, surplus is an impurity.
Said α-Al
2O
3The chemical weight percent of micro mist consists of: SiO
2:＜0.03%, Al
2O
3:＜99%, Fe
2O
3:＜0.02%, CaO:0.059%, MgO:0.007%, K
2O:0.40%, Na
2O:0.18%, IL:0.53%, surplus is an impurity.
The preparation method of above-mentioned mullite-corundum matter deflecting yoke core frame for burning; It is characterized in that; With mixing after each raw material and the accurate weighing of mineralizer; By being routinely added to the cellulose solution wedding agent, after mixing, moulding and drying, promptly get mullite-corundum matter deflecting yoke core frame for burning after inserting 1480 ℃ of sintering temperature moulding.
The mullite-corundum matter deflecting yoke core frame for burning of the present invention's preparation is owing to added MgCO
3Fine powder, when introducing equivalent MgO, add-on has been turned over some.MgCO
3After resolving into MgO, fine powder is evenly distributed, and is active high, be prone to clay in Al
2O
3, SiO
2Reaction in generates trichroite.Hold and burn the decline of seat linear expansivity, because MgCO
3Decomposition can form small pore, all helps the raising of thermal shock resistance.Control MgCO
3Add-on, may command is held and is burnt trichroite growing amount and linear expansivity in the seat, can increase substantially and hold the work-ing life of burning seat.
Description of drawings
Fig. 1 holds front view and the side elevational view photo that burns seat; Wherein (a) is front view, (b is) side elevational view.
Fig. 2 holds the scanning of burning seat to amplify 50 times of electromicroscopic photographs;
Fig. 3 holds the scanning of burning seat to amplify 1200 times of electromicroscopic photographs.
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description.
Embodiment
The mullite-corundum matter deflecting yoke core frame for burning of the present invention's preparation, starting material adopt fused corundom, electrofused mullite, Suzhou clay and α-Al
2O
3Micro mist, its chemical ingredients is as shown in table 1; Mineralizer is MgCO
3And BaCO
3Fine powder.
The chemical constitution (wt%) of table 1 experiment selected main raw material
| Raw material | SiO 2 | Al 2O 3 | Fe 2O 3 | TiO 2 | CaO | MgO | K2O | Na 2O | IL |
| Fused corundom | 0.16 | 98.98 | 0.25 | 0.01 | 0.02 | 0.02 | 0.03 | 0.12 | |
| Electrofused mullite | 23.10 | 75.20 | 0.12 | 0.10 | 0.16 | 0.12 | 0.20 | 0.27 | |
| The Suzhou clay | 48.25 | 37.12 | 0.46 | 0.12 | 0.01 | 0.45 | 0.13 | 13.01 | |
| α-Al 2O 3Micro mist | ＜0.03 | ＞99 | ＜0.02 | 0.059 | 0.007 | 0.40 | 0.18 | 0.53 |
The usage quantity of fused corundom is 35～45% (weight), and the usage quantity of electrofused mullite is 25～35% (weight), and the usage quantity of Suzhou clay is 20～30% (weight), and surplus is α-Al
2O
3Micro mist, the summation of raw material are 100%; Add mineralizer by MgCO
3And BaCO
3Form, wherein MgCO
3Be 3%～8% of raw material weight, BaCO
3Be 1%～3% of raw material weight.
Control MgCO
3Add-on, may command is held and is burnt trichroite growing amount and linear expansivity in the seat, can increase substantially and hold the work-ing life of burning seat.
Below be the embodiment that the contriver provides, need to prove, the invention is not restricted to these embodiment, in the scope that the present invention provides, all can prepare qualified mullite-corundum matter deflecting yoke core frame for burning.
Embodiment 1:
The usage quantity of the molten corundum of present embodiment power taking is 40% (weight), and the usage quantity of electrofused mullite is 30% (weight), and the usage quantity of Suzhou clay is 25% (weight), α-Al
2O
3Micro mist 5%.
Mineralizer is got MgCO
3Be 5% of raw material weight, BaCO
3Be 2% of raw material weight.
The mullite-corundum matter deflecting yoke core frame for burning of present embodiment prepares as follows:
With mixing after above-mentioned each raw material and the accurate weighing of mineralizer; Then by being routinely added to cellulose solution wedding agent (organic interim wedding agent), after mixing, moulding, drying, insert in 1480 ℃ the sintering oven; Mullite-corundum matter deflecting yoke core frame for burning after burning till gets product after selection.
Embodiment 2:
Different is for present embodiment and embodiment 1, and the usage quantity of the molten corundum of power taking is 43% (weight), and the usage quantity of electrofused mullite is 30% (weight), and the usage quantity of Suzhou clay is 20% (weight), α-Al
2O
3Micro mist 7%, mineralizer is got MgCO
3Be 7% of raw material weight, BaCO
3For raw material weight 1% all the other with embodiment 1.
Embodiment 3:
Different is for present embodiment and embodiment 1, and the usage quantity of the molten corundum of power taking is 35% (weight), and the usage quantity of electrofused mullite is 35% (weight), and the usage quantity of Suzhou clay is 24% (weight), α-Al
2O
3Micro mist 6%, mineralizer is got MgCO
3Be 6% of raw material weight, BaCO
3Be 1% of raw material weight, all the other are with embodiment 1.
Embodiment 4:
Different is for present embodiment and embodiment 1, and the usage quantity of the molten corundum of power taking is 45% (weight), and the usage quantity of electrofused mullite is 24% (weight), and the usage quantity of Suzhou clay is 23% (weight), α-Al
2O
3Micro mist 8%, mineralizer is got MgCO
3Be 3% of raw material weight, BaCO
3Be 1.5% of raw material weight, all the other are with embodiment 1.
Embodiment 5:
Different is for present embodiment and embodiment 1, and the usage quantity of the molten corundum of power taking is 40% (weight), and the usage quantity of electrofused mullite is 35% (weight), and the usage quantity of Suzhou clay is 20% (weight), α-Al
2O
3Micro mist 5%, mineralizer is got MgCO
3Be 7% of raw material weight, BaCO
3Be 3% of raw material weight, all the other are with embodiment 1.
Embodiment 6:
Different is for present embodiment and embodiment 1, and the usage quantity of the molten corundum of power taking is 40% (weight), and the usage quantity of electrofused mullite is 27% (weight), and the usage quantity of Suzhou clay is 29% (weight), α-Al
2O
3Micro mist 4%, mineralizer is got MgCO
3Be 5% of raw material weight, BaCO
3Be 1% of raw material weight, all the other are with embodiment 1.
The present invention is not through interpolation synthesis of dichroite powder, but through adding MgCO
3Fine powder has overcome adding synthesis of dichroite powder skewness, shrink in the sintering process inhomogeneous, easy to crack, the problem that yield rate is low.
The mullite-corundum matter deflecting yoke core frame for burning of the present invention's preparation is through detecting and experiment showed, wherein Al
2O
3% content is 75～80%, and the mullite phase content is 80～90%, and compressive strength is greater than 100MPa, average coefficient of linear expansion (4.5～6.5) * 10
-6K-1, reheating linear change rate on reheating (1350 ℃ * 3h)-0.01%～+ 0.01%, work-ing life is above 100 times.
Claims (2)
1. a mullite-corundum deflecting yoke core frame for burning is characterized in that, this mullite-corundum deflecting yoke core frame for burning that makes is in following raw material, to add mineralizer to form through sintering;
The weight percent of said raw material is: fused corundom: 35%～45%, and electrofused mullite: 25%～35%; The Suzhou clay: 20%～30%, surplus is α-Al
2O
3Micro mist;
The described mineralizer that adds is by MgCO
3And BaCO
3Form, wherein MgCO
3Be 3%～8% of raw material gross weight, BaCO
3Be 1%～3% of raw material gross weight;
The chemical weight percent of said fused corundom consists of: SiO
2: 0.16%, Al
2O
3: 98.98%, Fe
2O
3: 0.25%, CaO:0.01%, MgO:0.02%, K
2O:0.02%, Na
2O:0.03%, IL:0.12%, surplus is an impurity;
The chemical weight percent of said electrofused mullite consists of: SiO
2: 23.10%, Al
2O
3: 75.20%, Fe
2O
3: 0.12%, TiO
2: 0.10%, CaO:0.16%, MgO:0.12%, K
2O:0. 20%, Na
2O:0.27%, surplus is an impurity;
The chemical weight percent of said Suzhou clay consists of: SiO
2: 48.25%, Al
2O
3: 37.12%, Fe
2O
3: 0.46%, CaO:0.12%, MgO:0.01%, K
2O:0.45%, Na
2O:0.13%, IL:13.01%, surplus is an impurity;
Said α-Al
2O
3The chemical weight percent of micro mist consists of: SiO
2:＜0.03%, Al
2O
3:＜99%, Fe
2O
3:＜0.02%, CaO:0.059%, MgO:0.007%, K
2O:0.40%, Na
2O:0.18%, IL:0.53%, surplus is an impurity.
2. the preparation method of the described mullite-corundum deflecting yoke core frame for burning of claim 1; It is characterized in that; With mixing after each raw material and the accurate weighing of mineralizer; By being routinely added to the cellulose solution wedding agent, after mixing, moulding and drying, promptly obtain mullite-corundum deflecting yoke core frame for burning after inserting 1480 ℃ of sintering temperature moulding.
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|---|---|---|---|
| CN2009100212767A CN101481240B (en) | 2009-02-25 | 2009-02-25 | Mullite-corundum deflection magnetic core burning bearing seat and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100212767A CN101481240B (en) | 2009-02-25 | 2009-02-25 | Mullite-corundum deflection magnetic core burning bearing seat and preparation method thereof |
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| CN101481240A CN101481240A (en) | 2009-07-15 |
| CN101481240B true CN101481240B (en) | 2012-05-23 |
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| CN2009100212767A Expired - Fee Related CN101481240B (en) | 2009-02-25 | 2009-02-25 | Mullite-corundum deflection magnetic core burning bearing seat and preparation method thereof |
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| CN101921118B (en) * | 2010-05-10 | 2013-10-23 | 湖南仁海科技材料发展有限公司 | Refractory material and preparation method thereof |
| CN102432304B (en) * | 2011-08-25 | 2014-07-09 | 任健均 | Iolite-mullite-andalusite thermal-shock-resistant brick and preparation method thereof |
| CN102659433A (en) * | 2012-05-15 | 2012-09-12 | 江苏国豪耐火科技有限公司 | Anti-ring formation fire resistant material for special rotary kiln for producing ceramsite propping agent and preparation method thereof |
| CN107903041B (en) * | 2017-10-25 | 2021-01-26 | 湖北亿佳欧电子陶瓷股份有限公司 | Casket-like bowl and preparation method thereof |
| CN109987959A (en) * | 2019-02-27 | 2019-07-09 | 湖南省醴陵市浦口华高电瓷电器有限公司 | A kind of novel ceramic sand and preparation method thereof |
| CN113149618A (en) * | 2021-05-08 | 2021-07-23 | 湖南聚福精密陶瓷有限责任公司 | Ceramic burning bearing plate and processing technology thereof |
| CN115504806A (en) * | 2022-09-21 | 2022-12-23 | 湖南省醴陵市浦口华高电瓷电器有限公司 | Novel porcelain sand and preparation method thereof |
| CN115745598A (en) * | 2022-11-16 | 2023-03-07 | 浙江上硅聚力特材科技有限公司 | Manufacturing process of aluminum titanate ceramic lift tube |
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| CN1547234A (en) * | 2003-12-03 | 2004-11-17 | 横店集团东磁股份有限公司 | Process for preparing square deflecting magnetic core and material thereof |
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|---|---|---|---|---|
| CN1547234A (en) * | 2003-12-03 | 2004-11-17 | 横店集团东磁股份有限公司 | Process for preparing square deflecting magnetic core and material thereof |
| CN101139209A (en) * | 2007-08-20 | 2008-03-12 | 武汉科技大学 | Fire-resistant gravity flow pouring material and method for making same |
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| Title |
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| JP特开2001-110337A 2001.04.20 |
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| 杨晓凤 等.添加剂对莫来石－刚玉质偏转磁芯承烧座烧结性能的影响.《耐火材料》.2006,第40卷(第6期),第472～473页. * |
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|---|---|
| CN101481240A (en) | 2009-07-15 |
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