CN102674863B - 1750 DEG C high-temperature corundum and mullite push plate formula and preparation process - Google Patents
1750 DEG C high-temperature corundum and mullite push plate formula and preparation process Download PDFInfo
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- CN102674863B CN102674863B CN201210174456.0A CN201210174456A CN102674863B CN 102674863 B CN102674863 B CN 102674863B CN 201210174456 A CN201210174456 A CN 201210174456A CN 102674863 B CN102674863 B CN 102674863B
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Abstract
The invention discloses a 1750 DEG C high-temperature corundum and mullite push plate and a preparation process. The 1750 DEG C high-temperature corundum and mullite push plate formula is characterized by comprising the following compositions by weight: 20-28 percent of electrically-fused mullite, 35-45 percent of electrically-fused white alumina, 15-20 percent of tabular corundum, 10-12 percent of alpha-Al2O3 micro powder, 4-8 percent of kaolin, 1-2 percent of an activating agent and 1-2 percent of a bonding agent. The push plate can achieve the following properties of: being incapable of being deformed under conditions of high temperature of 1750 DEG C and high pressure after being used for a long time; having a service life of about six months; having extremely high thermal vibration stability, and having no crack from the high-temperature area to the low-temperature area; and having enough normal temperature strength and high temperature strength, and good wear-resisting property.
Description
Technical field
The present invention relates to fire resisting material field, relate in particular to the push pedal of a kind of 1750 ℃ of high-temperature corundum mullites and preparation technology.
Background technology
China is world Production of Ceramics big country, and at present, there is Production of Ceramics enterprise in the whole nation more than 10000, has approximately 4000 of medium-scale and above enterprises, practitioner 3,000,000 left and right, approximately 4,500 hundred million yuan of the whole industry gross output values.2011,271.23 hundred million of the above enterprise of China's scale domestic ceramics output, architectural pottery 78.08 Yi ㎡, 1.74 hundred million of snitaryware, 5,000 ten thousand tons/year of high-temperature special ceramic yields.
Alumina high temperature structural ceramics purposes is very wide, for vacuum device ceramic for mounting purposes, and film circuit board, silicon controlled rectifier nanometer fluorescent tube, infrared detection material etc., and catalytic carrier, aviation magnetic current electricity generation material etc.According to statistics, the producer of domestic production alumina high temperature structure ceramic has several hundred at present.Calcination equipment to be adopted and take the pushed bat kiln that Si-Mo rod is heating element, and firing temperature general control is 1630-1750 ℃ of left and right.
Corundum-mullite push pedal plays carrying effect in the bad body sintering procedure of alumina-ceramic, under the high temperature of 1630-1730 ℃, will bear the pressure of base substrate and saggar, huge thrust during shift-in and the friction resistance of track also will bear the cold cycling of up to a hundred times, in particular cases the also erosion of necessary low imperial kiln atmosphere, so push pedal material, not only require good normal temperature and hot strength, the refractoriness under load that the utmost point is higher, wear resisting property, there is excellent anti-thermal shock, erosion-resisting characteristics simultaneously.Corundum-mullite push pedal belongs to easily-consumed products on kiln, and now general work-ing life, just distortion, cracking, even caused top kiln about 2 months in existing domestic push pedal.Work-ing life is short.
Consideration based on above problem, benevolence sea, Hunan scientific and technological Materials company limited is since 2010 using corundum-mullite high temperature pusher as key research project, in order to reach external product standard, aspect starting material, the import of Hunan benevolence sea scientific and technological Materials company limited Japanese raw material and additive, detect with domestic raw material and contrast, make product and detect analysis, in technical process, increased by a procedure, fine powder mixed processes, in scrap build, increase a rotary mixing machine, guaranteed the homogeneity of batching.Increase Full automatic friction press, at work in-process drying process, increased domestic state-of-the-art microwave drying standby, accomplished batching, moulding, dry, high temperature burns till, automatic production line, has guaranteed the stability of quality product, by test many times, detect and market checking, the corundum-mullite high temperature pusher of benevolence sea, Hunan scientific and technological Materials company limited is supervised inspection center in April, 2012 through national refractory quality and is detected, and all technical all reaches Nippon Standard, and wherein thermal expansivity index has surpassed Nippon Standard.Reached satisfied effect.
In the time of application patent of the present invention, the applicant has applied for another patent of invention simultaneously.Patent name is: 1. 1750 ℃ of high-temperature corundum mullite bearing burning plates are filled a prescription and preparation technology.Its principal right item is following two: a kind of 1750 ℃ of high-temperature corundum mullite bearing burning plates formula, is characterized in that: it is by electrofused mullite, fused white corundum, plate diamond spar, α-Al
2o
3micro mist, kaolin, activator, bonding agent form; The total mass mark that accounts for of each composition is above: electrofused mullite 28%-35%, fused white corundum 32%-35%, plate diamond spar 20%-25%, α-Al
2o
3micro mist 6%-10%, kaolin 4%-8%, activator 0.5%-1%, bonding agent 0.5%-1%.
2. prepare a technical process for 1750 ℃ of high-temperature corundum mullite bearing burning plates, it is characterized in that:
Step 1, by above composition quality formula, to carry out blank mixing;
Step 2, by Mold Making, complete green compact moulding;
Step 3, complete green compact shaping;
Step 4, to carry out microwave green compact dry;
Step 5, dried green compact are carried out to 1780 ℃ fire, obtain load bearing board finished product;
Step 6, the check of finished product kiln discharge;
Step 7, finished product sign warehouse-in.
The composition of these two patents is different, and Application Areas also exists the not same sex.
Summary of the invention
A kind of 1750 ℃ of high-temperature corundum mullites provided by the invention push pedal and preparation technology, its objective is and make push pedal of the present invention can reach following performance: 1. have the in the situation that of 1750 ℃ of high temperature and high pressures, and life-time service, indeformable; 2. increase the service life by about 6 months; 3. have the high heat stability of shaking, push pedal is not ftractureed from high-temperature zone to cold zone; 4. have enough normal temperature strengths and hot strength, wear resisting property is good.
For realizing above object, the technical solution used in the present invention is: the push pedal of a kind of 1750 ℃ of high-temperature corundum mullites, is characterized in that: it is by electrofused mullite, fused white corundum, plate diamond spar, α-Al
2o
3micro mist, kaolin, activator, bonding agent form; The total mass mark that accounts for of each composition is above: electrofused mullite 20%-28%, fused white corundum 35%-45%, plate diamond spar 15%-20%, α-Al
2o
3micro mist 10%-12%, kaolin 4%-8%, activator 1%-2%, bonding agent 1%-2%.
Described activator is cerium oxide.
Described bonding agent adopts maltodextrin.
A kind of technical process of preparing the push pedal of described 1750 ℃ of high-temperature corundum mullites: its step is as follows:
Step 1, that described each composition is carried out to blank according to mass percent is mixing;
Step 2, by Mold Making, complete green compact moulding;
Step 3, complete green compact shaping;
Step 4, to carry out microwave green compact dry;
Step 5, dried green compact are carried out to 1780 ℃ fire, obtain push pedal finished product;
Step 6, the check of finished product kiln discharge;
Step 7, finished product sign warehouse-in.
Beneficial effect of the present invention: table 1 is this product and Japanese push pedal product leading indicator contrast of the same trade.
Table 1:
Product of the present invention is supervised inspection center through national refractory quality and is detected, all technical all reaches Nippon Standard, wherein thermal expansion is that powder index has surpassed Nippon Standard, existing product has normally been used about 6 months in applying unit, also good < japanese product guarantees that normal six months > of use contrasted from duration of service at present, to reach Japanese like product standard.
A kind of 1750 ℃ of high-temperature corundum mullites push pedal that the present invention produces also has following beneficial effect: 1. has the in the situation that of 1750 ℃ of high temperature and high pressures, and life-time service, indeformable; 2. increase the service life by about 6 months; 3. have the high heat stability of shaking, push pedal is not ftractureed from high-temperature zone to cold zone; 4. have enough normal temperature strengths and hot strength, wear resisting property is good.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, so that those skilled in the art further understands the present invention.
Example 1:
Each composition of a kind of 1750 ℃ of high-temperature corundum mullites push pedal consists of: 20 parts of electrofused mullites, 36 parts of fused white corundums, 20 parts of plate diamond spars, α-Al
2o
312 parts of micro mists, 8 parts of kaolin, 2 parts, activator, 2 parts of bonding agents.
A kind of technical process of preparing the push pedal of 1750 ℃ of high-temperature corundum mullites is as follows:
Step 1, that described each composition is carried out to blank according to mass percent is mixing;
Step 2, by Mold Making, complete green compact moulding;
Step 3, complete green compact shaping;
Step 4, to carry out microwave green compact dry;
Step 5, dried green compact are carried out to 1780 ℃ fire, obtain push pedal finished product;
Step 6, the check of finished product kiln discharge;
Step 7, finished product sign warehouse-in.
By example 1, the 1750 ℃ of high-temperature corundum mullites push pedal obtaining can reach following performance: 1. have the in the situation that of 1750 ℃ of high temperature and high pressures, and life-time service, indeformable; 2. increase the service life by about 6 months; 3. have the high heat stability of shaking, push pedal is not ftractureed from high-temperature zone to cold zone; 4. have enough normal temperature strengths and hot strength, wear resisting property is good.
Example 2:
Each composition of a kind of 1750 ℃ of high-temperature corundum mullites push pedal consists of: 28 parts of electrofused mullites, 35 parts of fused white corundums, 15 parts of plate diamond spars, α-Al
2o
312 parts of micro mists, 7 parts of kaolin, 1 part, activator, 2 parts of bonding agents.
The technical process of 1750 ℃ of high-temperature corundum mullites of preparation push pedal is with example 1.
By example 2, the 1750 ℃ of high-temperature corundum mullites push pedal obtaining can reach following performance: 1. have the in the situation that of 1750 ℃ of high temperature and high pressures, and life-time service, indeformable; 2. increase the service life by about 6 months; 3. have the high heat stability of shaking, push pedal is not ftractureed from high-temperature zone to cold zone; 4. have enough normal temperature strengths and hot strength, wear resisting property is good.
Example 3:
Each composition of a kind of 1750 ℃ of high-temperature corundum mullites push pedal consists of: 23 parts of electrofused mullites, 40 parts of fused white corundums, 16 parts of plate diamond spars, α-Al
2o
310 parts of micro mists, 8 parts of kaolin, 2 parts, activator, 1 part of bonding agent.
The technical process of 1750 ℃ of high-temperature corundum mullites of preparation push pedal is with example 1.
By example 3, the 1750 ℃ of high-temperature corundum mullites push pedal obtaining can reach following performance: 1. have the in the situation that of 1750 ℃ of high temperature and high pressures, and life-time service, indeformable; 2. increase the service life by about 6 months; 3. have the high heat stability of shaking, push pedal is not ftractureed from high-temperature zone to cold zone; 4. have enough normal temperature strengths and hot strength, wear resisting property is good.
Example 4:
Each composition of a kind of 1750 ℃ of high-temperature corundum mullites push pedal consists of: 28 parts of electrofused mullites, 35 parts of fused white corundums, 20 parts of plate diamond spars, α-Al
2o
310 parts of micro mists, 4 parts of kaolin, 1.5 parts, activator, 1.5 parts of bonding agents.
The technical process of 1750 ℃ of high-temperature corundum mullites of preparation push pedal is with example 1.
By example 4, the 1750 ℃ of high-temperature corundum mullites push pedal obtaining can reach following performance: 1. have the in the situation that of 1750 ℃ of high temperature and high pressures, and life-time service, indeformable; 2. increase the service life by about 6 months; 3. have the high heat stability of shaking, push pedal is not ftractureed from high-temperature zone to cold zone; 4. have enough normal temperature strengths and hot strength, wear resisting property is good.
Example 5:
Each composition of a kind of 1750 ℃ of high-temperature corundum mullites push pedal consists of: 20 parts of electrofused mullites, 45 parts of fused white corundums, 15 parts of plate diamond spars, α-Al
2o
311 parts of micro mists, 6 parts of kaolin, 1.8 parts, activator, 1.2 parts of bonding agents.
The technical process of 1750 ℃ of high-temperature corundum mullites of preparation push pedal is with example 1.
By example 5, the 1750 ℃ of high-temperature corundum mullites push pedal obtaining can reach following performance: 1. have the in the situation that of 1750 ℃ of high temperature and high pressures, and life-time service, indeformable; 2. increase the service life by about 6 months; 3. have the high heat stability of shaking, push pedal is not ftractureed from high-temperature zone to cold zone; 4. have enough normal temperature strengths and hot strength, wear resisting property is good.
Above a kind of 1750 ℃ of high-temperature corundum mullites provided by the present invention push pedal and preparation technology are described in detail, herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (4)
1. 1750 ℃ of high-temperature corundum mullites push pedal, is characterized in that: it is by electrofused mullite, fused white corundum, plate diamond spar, α-Al
2o
3micro mist, kaolin, activator, bonding agent form; The total mass mark that accounts for of each composition is above: electrofused mullite 20%-28%, fused white corundum 35%-45%, plate diamond spar 15%-20%, α-Al
2o
3micro mist 10%-12%, kaolin 4%-8%, activator 1%-2%, bonding agent 1%-2%.
2. a kind of 1750 ℃ of high-temperature corundum mullites according to claim 1 push pedal, is characterized in that, described activator is cerium oxide.
3. a kind of 1750 ℃ of high-temperature corundum mullites according to claim 1 push pedal, is characterized in that, described bonding agent adopts maltodextrin.
4. a processing method of preparing 1750 ℃ of high-temperature corundum mullites claimed in claim 1 push pedal, step is as follows:
Step 1, that each composition is carried out to blank according to mass percent is mixing;
Step 2, by Mold Making, complete green compact moulding;
Step 3, complete green compact shaping;
Step 4, to carry out microwave green compact dry;
Step 5, dried green compact are carried out to 1780 ℃ fire, obtain push pedal finished product;
Step 6, the check of finished product kiln discharge;
Step 7, finished product sign warehouse-in.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174456.0A CN102674863B (en) | 2012-05-31 | 2012-05-31 | 1750 DEG C high-temperature corundum and mullite push plate formula and preparation process |
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| CN201210174456.0A CN102674863B (en) | 2012-05-31 | 2012-05-31 | 1750 DEG C high-temperature corundum and mullite push plate formula and preparation process |
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| CN102674863B true CN102674863B (en) | 2014-04-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105000893A (en) * | 2014-09-09 | 2015-10-28 | 长兴嘉诚耐火材料有限公司 | High temperature resistant composite crucible and manufacturing method thereof |
| CN104591753B (en) * | 2014-12-24 | 2016-08-24 | 江苏三恒高技术窑具有限公司 | A kind of high-performance modified mullite high temperature platen and manufacture method |
| CN105000870A (en) * | 2015-06-26 | 2015-10-28 | 湖南仁海科技材料发展有限公司 | Microwave drying method of corundum composite ceramic material |
| 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 |
Citations (3)
| 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 |
| CN101921118A (en) * | 2010-05-10 | 2010-12-22 | 新邵仁海科技材料发展有限公司 | Refractory material and preparation method thereof |
| CN101935222A (en) * | 2010-08-24 | 2011-01-05 | 中钢集团洛阳耐火材料研究院有限公司 | High-temperature corundum-porzite pushing plate and manufacture method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1794072C (en) * | 1991-01-08 | 1993-02-07 | Украинский научно-исследовательский институт огнеупоров | Charge for refractory materials preparation |
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Patent Citations (3)
| 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 |
| CN101921118A (en) * | 2010-05-10 | 2010-12-22 | 新邵仁海科技材料发展有限公司 | Refractory material and preparation method thereof |
| CN101935222A (en) * | 2010-08-24 | 2011-01-05 | 中钢集团洛阳耐火材料研究院有限公司 | High-temperature corundum-porzite pushing plate and manufacture method thereof |
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Inventor after: Chen Libo Inventor after: Pan Jianhua Inventor after: Pan Jianzhong Inventor before: Chen Lifan Inventor before: Pan Jianhua Inventor before: Pan Jianzhong |
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Denomination of invention: 1750 DEG C high-temperature corundum and mullite push plate formula and preparation process Effective date of registration: 20180724 Granted publication date: 20140409 Pledgee: China Co truction Bank Corp Xinshao branch Pledgor: Hunan Renhai Materials Science and Technology Development Co., Ltd. Registration number: 2018990000593 |