CN107619286A - A kind of preparation method of corundum-mullite sagger - Google Patents
A kind of preparation method of corundum-mullite sagger Download PDFInfo
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- CN107619286A CN107619286A CN201710823503.2A CN201710823503A CN107619286A CN 107619286 A CN107619286 A CN 107619286A CN 201710823503 A CN201710823503 A CN 201710823503A CN 107619286 A CN107619286 A CN 107619286A
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Abstract
The invention discloses a kind of preparation method of corundum-mullite sagger, including 1), prepare raw material；2), pug is prepared；3), shaping is with drying；4), burn till.Corundum-mullite sagger produced by the present invention has extraordinary intensity, and Applicable temperature is high, corrosion-resistant, service life length, solve thes problems, such as to point out in background technology.
Description
Technical field
The present invention relates to fire resisting material field, more particularly to a kind of preparation method of corundum-mullite sagger.
Background technology
Electronic component manufacturing industry is the chief component of electronic component industry, and the basis of electronics and information industry
Supporting industry, its technical merit and production capacity directly affect the development of whole industry.From the nineties in last century, China's electronics
Component manufacturing industry is fast-developing and achieves noticeable achievement, it has also become the important foundation of support China's Electronic Development of Information Industry.At present,
Domestic electronic component has thousands of families by manufacturing enterprise, and the upstream and downstream firms of tight association have tens of thousands of families, and the gross output value accounts for electronics
The 20% of information industry.
There is following some defects for the 95 porcelain saggars generally used in electronic component manufacturing process：Shaking property of heat and resistance to invade
Corrosion is poor；Service life is short, only 20 times or so, and it is only 2 months to calculate usage time by monthly 10 times, frequently changes meeting
Increase enterprise's production cost.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of preparation method of corundum-mullite sagger, obtained corundum does not come
Stone saggar has extraordinary thermal shock resistance, and Applicable temperature is high, corrosion-resistant, service life length, efficiently solves background technology middle finger
The problem of going out.
The technical solution adopted by the present invention is：
A kind of preparation method of corundum-mullite sagger, comprises the following steps：
1) raw material, is prepared：8 parts of the electrofused mullite of 5-3mm particles, 7 parts of the electrofused mullite of 3-1mm particles, less than 1mm
5 parts of the electrofused mullite of particle, 11 parts of the fused white corundum of 3-1mm particles, less than 7 parts of the fused white corundum of 1mm particles, 3-
6 parts of the andalusite of 1mm particles, less than 4 parts of the andalusite of 1mm particles, less than 9 parts of the sillimanite of 200 mesh, α-Al2O35 parts of micro mist,
5 parts of fine silica powder, 8 parts of clay powder, 21 parts of the alumina of 5-3mm particles, 4 parts of bonding agent；
2), pug is prepared：First by the electrofused mullite of 5-3mm particles, the electrofused mullite of 3-1mm particles, 3-1mm electricity
Molten white fused alumina, the andalusite of 3-1mm particles, the alumina of 5-3mm particles are all put into planetary kolleroang mixed grind, mixed grind 20-30
After minute, continue mixed grind 7-10 minutes after adding 2 parts of bonding agent, then add the electrofused mullite less than 1mm particles, be less than
Fused white corundum, the andalusite of 1mm particles of 1mm particles, sillimanite, α-Al less than 200 mesh2O3Micro mist, clay powder, 1 part of knot
Continue mixed grind after mixture, mixed grind releases pug and stands 5-8 hours after 20 minutes, the pug after standing is fed again into planetary mixed grind
In machine, and add 1 part of bonding agent and carry out secondary mixed grind, the time of secondary mixed grind is 10-15 minutes；
3), shaping is with drying：The pug that step 2) obtains is sent into forcing press adobe is made, adobe is then sent into 100-
10-15 hours are dried in 160 DEG C of hothouse；
4), burn till：The adobe that step 3) obtains is sent into calcining kiln to be burnt till, firing temperature is 1380-1450 DEG C, is protected
The warm time is 4-6 hours.
Preferably, in the composition of the electrofused mullite：66% ＜ alundum (Al2O3)s ＜ 77%, di-iron trioxide ＜
1%, in the composition of fused white corundum：Alundum (Al2O3) ＞ 95.6%.
Preferably, in the composition of the alumina：Al2O3Content be 80-88%, Fe2O3Content be less than 2%, TiO2
≤ 3.0%, refractoriness >=1770 DEG C of the alumina, body is close >=3.0g/cm3, water absorption rate≤3.5%.
Preferably, in the composition of the clay powder：Al2O3Content be 20-33%, Fe2O3Content be less than 1.5%,
Refractoriness >=1670 DEG C of the alumina.
Preferably, burning till in the step 4) is carried out under weak oxide environment, described bonding agent is 25-45%'s
Industrial phosphoric acid.
Andalusite is a kind of aluminium silicate mineral, and it is short cylinder or radiated aggregation, starts to convert at about 1400 DEG C
For mullite, certain volumetric expansion is produced, thermal shock resistance, volume stability, refractoriness under load and the creep properties of brick can be improved
Energy.
Beneficial effects of the present invention：
1), alumina reacts electrofused mullite in the mullite and corundum, with adobe changed into, electric smelting in sintering process
White fused alumina mixes, and can greatly improve the intensity of corundum-mullite sagger, and Applicable temperature is higher；
2), corundum-mullite sagger made from this method, corundum and mullite are mutually more, and eutectic is less, have well
Corrosion resistance, and thermal shock resistance；
3), fused white corundum has higher refractory temperature, so as to improve the refractory temperature of corundum-mullite sagger, and
Wearability is good, good impact resistance, not easy to crack；
4) when, pug is prepared, bonding agent adds in three times, so as to improve the effect of mixed grind so that energy between each raw material
Enough organically combine even closer, using the technique for standing mixed grind again during mixed grind so that will be without tight during secondary mixed grind
The close raw material being combined together carries out secondary mixed grind combination, so as to lift the effect of mixed grind；
5), the andalusite and sillimanite of the application addition, primary mullite and secondary mullite at different temperatures,
While generating mullite phase, the expansion of certain volume is persistently produced, counteracts and is shunk caused by funnel brick high-temperature liquid-phase sintering,
The high volume stability and high-temperature behavior of corundum-mullite sagger are further increased, institutional framework inside transformation toughening, is carried
High thermal shock resistance.
Embodiment
The present invention is described in further detail below by specific embodiment.
Embodiment 1
A kind of preparation method of corundum-mullite sagger, comprises the following steps：
1) raw material, is prepared：8 parts of the electrofused mullite of 5-3mm particles, 7 parts of the electrofused mullite of 3-1mm particles, less than 1mm
5 parts of the electrofused mullite of particle, 11 parts of the fused white corundum of 3-1mm particles, less than 7 parts of the fused white corundum of 1mm particles, 3-
6 parts of the andalusite of 1mm particles, less than 4 parts of the andalusite of 1mm particles, less than 9 parts of the sillimanite of 200 mesh, α-Al2O35 parts of micro mist,
5 parts of fine silica powder, 8 parts of clay powder, 21 parts of the alumina of 5-3mm particles, 4 parts of bonding agent；
2), pug is prepared：First by the electrofused mullite of 5-3mm particles, the electrofused mullite of 3-1mm particles, 3-1mm electricity
Molten white fused alumina, the andalusite of 3-1mm particles, the alumina of 5-3mm particles are all put into planetary kolleroang mixed grind, mixed grind 20-30
After minute, continue mixed grind 7-10 minutes after adding 2 parts of bonding agent, then add the electrofused mullite less than 1mm particles, be less than
Fused white corundum, the andalusite of 1mm particles of 1mm particles, sillimanite, α-Al less than 200 mesh2O3Micro mist, clay powder, 1 part of knot
Continue mixed grind after mixture, mixed grind releases pug and stands 5-8 hours after 20 minutes, the pug after standing is fed again into planetary mixed grind
In machine, and add 1 part of bonding agent and carry out secondary mixed grind, the time of secondary mixed grind is 10-15 minutes；
3), shaping is with drying：The pug that step 2) obtains is sent into forcing press adobe is made, adobe is then sent into 100-
10-15 hours are dried in 160 DEG C of hothouse；
4), burn till：The adobe that step 3) is obtained is sent into calcining kiln, is burnt till under weak oxide environment, firing temperature
For 1380-1450 DEG C, soaking time is 4-6 hours.
In the composition of the electrofused mullite：66% ＜ alundum (Al2O3)s ＜ 77%, di-iron trioxide ＜ 1%, electric smelting is white
In the composition of corundum：Alundum (Al2O3) ＞ 95.6%.
In the composition of the alumina：Al2O3Content be 80-88%, Fe2O3Content be less than 2%, TiO2≤ 3.0%, institute
State refractoriness >=1770 DEG C of alumina, body is close >=3.0g/cm3, water absorption rate≤3.5%.
In the composition of the clay powder：Al2O3Content be 20-33%, Fe2O3Content be less than 1.5%, the alumina
Refractoriness >=1670 DEG C.
Described bonding agent is 25-45% industrial phosphoric acid.
Claims (5)
1. a kind of preparation method of corundum-mullite sagger, it is characterised in that comprise the following steps：
1) raw material, is prepared：8 parts of the electrofused mullite of 5-3mm particles, 7 parts of the electrofused mullite of 3-1mm particles, less than 1mm particles
5 parts of electrofused mullite, 11 parts of the fused white corundum of 3-1mm particles, less than 7 parts, 3-1mm of the fused white corundum of 1mm particles
6 parts of the andalusite of grain, less than 4 parts of the andalusite of 1mm particles, less than 9 parts of the sillimanite of 200 mesh, α-Al2O35 parts of micro mist, dioxy
5 parts of SiClx micro mist, 8 parts of clay powder, 21 parts of the alumina of 5-3mm particles, 4 parts of bonding agent；
2), pug is prepared：It is first that the electrofused mullite of 5-3mm particles, the electrofused mullite of 3-1mm particles, 3-1mm electric smelting is white
Corundum, the andalusite of 3-1mm particles, the alumina of 5-3mm particles are all put into planetary kolleroang mixed grind, mixed grind 20-30 minutes
Afterwards, continue mixed grind 7-10 minutes after adding 2 parts of bonding agent, then add the electrofused mullite less than 1mm particles, less than 1mm
Fused white corundum, the andalusite of 1mm particles of grain, sillimanite, α-Al less than 200 mesh2O3Micro mist, clay powder, 1 part of bonding agent
After continue mixed grind, mixed grind releases pug and stands 5-8 hours after 20 minutes, the pug after standing is fed again into planetary kolleroang
In, and add 1 part of bonding agent and carry out secondary mixed grind, the time of secondary mixed grind is 10-15 minutes；
3), shaping is with drying：The pug that step 2) obtains is sent into forcing press adobe is made, adobe is then sent into 100-160
DEG C hothouse in 10-15 hours are dried；
4), burn till：Adobe that step 3) obtains is sent into calcining kiln to be burnt till, firing temperature is 1380-1450 DEG C, during insulation
Between be 4-6 hours.
2. the preparation method of a kind of corundum-mullite sagger according to claim 1, it is characterised in that the electric smelting does not come
In the composition of stone：66% ＜ alundum (Al2O3)s ＜ 77%, di-iron trioxide ＜ 1%, in the composition of fused white corundum：Three oxidations two
Aluminium ＞ 95.6%.
A kind of 3. preparation method of corundum-mullite sagger according to claim 1, it is characterised in that the alumina into
In point：Al2O3Content be 80-88%, Fe2O3Content be less than 2%, TiO2≤ 3.0%, refractoriness >=1770 of the alumina
DEG C, body is close >=3.0g/cm3, water absorption rate≤3.5%.
4. the preparation method of a kind of corundum-mullite sagger according to claim 1, it is characterised in that the clay powder
In composition：Al2O3Content be 20-33%, Fe2O3Content be less than 1.5%, refractoriness >=1670 DEG C of the alumina.
A kind of 5. preparation method of corundum-mullite sagger according to claim 1 or 2 or 3 or 4, it is characterised in that institute
State burning till in step 4) to carry out under weak oxide environment, described bonding agent is 25-45% industrial phosphoric acid.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727045A (en) * | 2018-06-26 | 2018-11-02 | 湖南湘钢瑞泰科技有限公司 | A kind of hot air duct junctions modular tile and preparation method thereof |
| CN109053165A (en) * | 2018-05-18 | 2018-12-21 | 宜兴市东山新型材料有限公司 | One kind is for lithium battery anode roasting saggar and preparation method thereof |
| CN109574644A (en) * | 2018-12-17 | 2019-04-05 | 无锡顺佳特种陶瓷有限公司 | For producing the roller kilns saggar and preparation method thereof of iron oxygen soft magnetic bodies |
| CN110590341A (en) * | 2019-09-29 | 2019-12-20 | 武汉科技大学 | Sagger for sintering sol-combined lithium battery positive electrode material and preparation method thereof |
| CN110818398A (en) * | 2018-08-09 | 2020-02-21 | 山东莱科陶瓷材料有限公司 | Sagger for high-temperature firing and preparation method thereof |
| CN114920570A (en) * | 2022-05-16 | 2022-08-19 | 湖南湘钢瑞泰科技有限公司 | Hot air pipeline three-fork combined brick and preparation method thereof |
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| CN102659421A (en) * | 2012-03-31 | 2012-09-12 | 马钢(集团)控股有限公司 | Production method of mullite cast steel brick |
| CN103482993A (en) * | 2013-09-13 | 2014-01-01 | 湖南仁海科技材料发展有限公司 | Adamantine spar and mullite composite material sagger and method for manufacturing sagger |
| CN104744059A (en) * | 2015-03-20 | 2015-07-01 | 湖南湘钢瑞泰科技有限公司 | Dry-quenched mullite brick and preparation method thereof |
| CN106747523A (en) * | 2017-01-17 | 2017-05-31 | 重庆钢铁集团矿业有限公司冶金材料厂 | Low iron mullite brick and its manufacture method |
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Patent Citations (4)
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| CN102659421A (en) * | 2012-03-31 | 2012-09-12 | 马钢(集团)控股有限公司 | Production method of mullite cast steel brick |
| CN103482993A (en) * | 2013-09-13 | 2014-01-01 | 湖南仁海科技材料发展有限公司 | Adamantine spar and mullite composite material sagger and method for manufacturing sagger |
| CN104744059A (en) * | 2015-03-20 | 2015-07-01 | 湖南湘钢瑞泰科技有限公司 | Dry-quenched mullite brick and preparation method thereof |
| CN106747523A (en) * | 2017-01-17 | 2017-05-31 | 重庆钢铁集团矿业有限公司冶金材料厂 | Low iron mullite brick and its manufacture method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109053165A (en) * | 2018-05-18 | 2018-12-21 | 宜兴市东山新型材料有限公司 | One kind is for lithium battery anode roasting saggar and preparation method thereof |
| CN108727045A (en) * | 2018-06-26 | 2018-11-02 | 湖南湘钢瑞泰科技有限公司 | A kind of hot air duct junctions modular tile and preparation method thereof |
| CN110818398A (en) * | 2018-08-09 | 2020-02-21 | 山东莱科陶瓷材料有限公司 | Sagger for high-temperature firing and preparation method thereof |
| CN109574644A (en) * | 2018-12-17 | 2019-04-05 | 无锡顺佳特种陶瓷有限公司 | For producing the roller kilns saggar and preparation method thereof of iron oxygen soft magnetic bodies |
| CN110590341A (en) * | 2019-09-29 | 2019-12-20 | 武汉科技大学 | Sagger for sintering sol-combined lithium battery positive electrode material and preparation method thereof |
| CN110590341B (en) * | 2019-09-29 | 2022-04-29 | 武汉科技大学 | Sagger for sintering sol-combined lithium battery positive electrode material and preparation method thereof |
| CN114920570A (en) * | 2022-05-16 | 2022-08-19 | 湖南湘钢瑞泰科技有限公司 | Hot air pipeline three-fork combined brick and preparation method thereof |
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Application publication date: 20180123 |