CN108083821A - A kind of ceramics saggar and preparation method - Google Patents
A kind of ceramics saggar and preparation method Download PDFInfo
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- CN108083821A CN108083821A CN201711413877.3A CN201711413877A CN108083821A CN 108083821 A CN108083821 A CN 108083821A CN 201711413877 A CN201711413877 A CN 201711413877A CN 108083821 A CN108083821 A CN 108083821A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Abstract
The present invention relates to a kind of ceramic saggar and preparation methods.The ceramics saggar uses andalusite particle, Sillimanite Particles, zirconium oxide micro mist, andalusite activity micro mist, alumina powder aggregate, ball clay is primary raw material, by raw material according to different weight percent, be prepared for the product of the present invention through material mixing, molding, drying, final high temperature calcining, the ceramics saggar product overcome it is existing do not grown there are service life, the defects such as stability is poor, flexural strength is low.Ceramic saggar prepared by the present invention has many advantages, such as that high high temperature break resistant intensity, good thermal shock and service life are long.
Description
Technical field
The invention belongs to technical field of fire-resistant material preparation, mainly propose a kind of ceramic saggar and preparation method.
Background technology
Saggar is that one kind holds burning device, is industrially frequently utilized that saggar to produce the ceramic or height that need high-temperature calcination
Warm electron pipe etc..Tunnel kiln is generally adopted by, is a kind of continous way heat-agglomerating equipment, according to the technique of sintered products
It is required that arranging required warm area and power, the product that needs are sintered directly or indirectly is placed in saggar, by propulsion system according to
The technological requirement product of product is moved with kiln car, in order to complete product sintering in burner hearth.During this, saggar warp
The impact of the normal high temperature for being subject to 1300 DEG C -1600 DEG C or so, various redox conditions and temperature instantaneous variation, simultaneously also
The change dramatically of temperature after kiln car kiln discharge is resistant to, thus it is extremely stringent to the performance requirement of saggar.
At present, the saggars such as the corundum of domestic production, silicon carbide, cordierite are difficult to meet for temperature, anti-folding
The requirement of intensity, service life and high chemical stability etc..Corundum saggar was produced on high temperature kiln using only 20 days
Raw crackle or rupture.Silicon carbide have the characteristics that it is oxidizable, oxidation rear surface preferably generate SiO2Glass phase, it is preferably dirty to product
Dye.Cordierite Basic Sagger is since the generation temperature of cordierite is closer to decomposition temperature, in relatively low temperature, cordierite content
Less, glass mutually a large amount of generations can be caused again by improving firing temperature, directly influence the creep resistance of product, therefore cordierite casket
Alms bowl is only applicable to moderate oven（Temperature≤1200 DEG C）, it is impossible to meet high temperature.What is generally used at present is all corundum-mullite casket
Alms bowl, but due to the select permeability of raw material, cause the service life of product relatively low and stability is poor, craze and transfiguration, the anti-folding of high temperature
Insufficient strength, while there is phenomenon of rupture.
The content of the invention
The purpose of the present invention is overcoming above-mentioned saggar service life short, preferably deformed under high temperature, thermal shock resistance is poor, loading softening
The defects such as temperature is low provide a kind of production cost low and high temperature High anti bending strength, the saggar and preparation method of service life length.
Purpose to realize the present invention, used technical solution are：A kind of ceramics saggar, it is mainly by following weight hundred
The raw material of ratio is divided to prepare：Andalusite particle 20%-30%, Sillimanite Particles 20-30%, zirconium oxide micro mist 5-10%, andalusite are lived
Property micro mist 10% ~ 20%, alumina powder aggregate 15%-20%, ball clay 3% ~ 5%, additional bonding agent 0.1% ~ 0.15%.
Preferably, additional bonding agent is the whole in paraffin, carboxymethyl cellulose, yellow starch gum.
Preferably, andalusite particle Al2O3Weight percentage is 60% or so, and iron content weight percentage is ＜
0.4% or so；Sillimanite Particles Al2O3Weight percentage is 60% or so, and iron content weight percentage is ＜ 0.4% or so.
Preferably, the grain size of andalusite activity micro mist is 2 microns, alumina content >=60%, iron content ＜ 0.4%.
Preferably, the grain size of zirconia powder is between 5000-8000 mesh.
Preferably, it is 0.045mm's that ball clay, which selects grain size,.
Preferably, alumina powder aggregate is the spherical agglomerates that alumina powder shapes at normal temperatures, and when compacting can
To keep the integrality of ball.
A kind of preparation method of ceramics saggar, comprises the technical steps that：(1) by raw material components according to different weight percentage
It is uniformly mixed than being put into stirring 30min in vertical stainless steel mixer.（2）Prepare the saggar mold to be done；(3) step will be passed through
Suddenly（1）Material with 630 tons of press cold moudlings, spontaneously dry；(4) step will be passed through（3）The height of dry material 20m long
Warm kiln when clinkering zone heat preservation 4-6 is small, obtains ceramic saggar through 1450 DEG C ~ 1480 DEG C of temperature calcination.
The present invention beneficial features be：（1）The present invention uses andalusite, sillimanite as primary raw material, in high temperature sintering mistake
Cheng Zhong, andalusite and sillimanite start to change into acicular mullite, and its transition temperature is different, can in use progressively
Reaction can keep volume stability to avoid saggar contraction distortion under long-time service, extend material lifetime.（2）The present invention selects
Andalusite activity micro mist, purity is high, and impurity content is few, and activity is big, can substitute common micro mist and use, and because fine size,
What can be mixed is very uniform, is conducive to improve substrate performance, and after addition, hot high temperature break resistant intensity improves 6 compared with traditional product
Times or more.（3）The alumina powder aggregate of the present invention is convenient for packing space when having compacting, when being sintered under high temperature, spherical shape group
Aggressiveness can be shunk, and then aggregate can form a circumferential weld with periphery substance so that product has toughness at high temperature, offsets heat
The function of stress, the zirconium oxide product of addition can not only improve the thermal shock resistance of saggar, moreover it is possible to greatly improve product anti-erosion
Property.Additional bonding agent room temperature has combination, after discharging at high temperature, retains three kinds of different stomatas, is conducive to improve
The thermal shock resistance and toughness of kiln furnitures.The ceramic box alms bowl volume stability of method manufacture using the present invention, good thermal shock（1100℃
Water cooling ＞ 100 times）4 times or more are improved than similar product service life.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated for this, but the present invention is not only limited in detail below
Embodiment.
Embodiment 1 is by weight percent：Andalusite particle 29%, Sillimanite Particles 25%, zirconium oxide micro mist 8% are red
Pillar activity micro mist 20%, alumina powder aggregate 15%, ball clay 3%, additional bonding agent 0.1%.Processing step is such as
Under：Above-mentioned raw materials component according to weight percent in vertical stainless steel mixer is stirred evenly, mold is put into, through 630 tons
Press cold moudling is calcined after natural drying with the high temperature kiln of 20m long at 1450 DEG C, and keep the temperature 5 it is small when.
Embodiment 2 is by weight percent：It is by weight percent：Andalusite particle 28%, Sillimanite Particles 25%,
Zirconium oxide micro mist 8%, andalusite activity micro mist 20%, alumina powder aggregate 16%, ball clay 3%, additional bonding agent
0.1%.Processing step is as follows：Above-mentioned raw materials component is stirred evenly according to weight percent in vertical stainless steel mixer,
Mold is put into, through 630 tons of press cold moudlings, is calcined after natural drying with the high temperature pusher oil kiln of 20m long at 1480 DEG C, and
Keep the temperature 6 it is small when.
Claims (7)
1. a kind of ceramics saggar, it is characterised in that：It is mainly prepared by the raw material of following weight percent：Andalusite
Grain 20%-30%, Sillimanite Particles 20-30%, zirconium oxide micro mist 5-10%, andalusite activity micro mist 10% ~ 20%, aluminium oxide is micro-
Powder ball aggressiveness 15%-20%, ball clay 3% ~ 5%, additional bonding agent 0.1% ~ 0.15%.
2. ceramics saggar according to claim 1, it is characterised in that：The additional bonding agent is paraffin, carboxymethyl is fine
Whole in dimension element, yellow starch gum.
3. ceramics saggar according to claim 1, it is characterised in that：The andalusite particle Al2O3Weight percent contains
It measures as 59% or so, iron content weight percentage is ＜ 0.5% or so；Sillimanite Particles Al2O3Weight percentage is left for 59%
The right side, iron content weight percentage are ＜ 0.5% or so.
4. ceramics saggar according to claim 1, it is characterised in that：The grain size of the andalusite activity micro mist is micro- for 2
Rice, alumina content >=60%, iron content ＜ 0.5%.
5. ceramics saggar according to claim 1, it is characterised in that：The grain size of the zirconia powder is 5000-8000
Between mesh.
6. ceramics saggar according to claim 1, it is characterised in that：The alumina powder aggregate is that aluminium oxide is micro-
The spherical agglomerates that powder shapes at normal temperatures, when compacting, can keep the integrality of ball.
7. a kind of preparation method of ceramics saggar, comprises the technical steps that：(1) by raw material components according to different weight percentage
It is uniformly mixed than being put into stirring 30min in vertical stainless steel mixer；（2）Prepare the saggar mold to be done；(3) step will be passed through
Suddenly（1）Material with 630 tons of press cold moudlings, spontaneously dry；(4) step will be passed through（3）The height of dry material 20m long
Warm kiln when clinkering zone heat preservation 4-6 is small, obtains ceramic saggar through 1450 DEG C ~ 1480 DEG C of temperature calcination.
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| CN201711413877.3A CN108083821A (en) | 2017-12-24 | 2017-12-24 | A kind of ceramics saggar and preparation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108069708A (en) * | 2017-12-24 | 2018-05-25 | 万燕杰 | A kind of high thermal shock long-life saggar and preparation method |
| CN108218444A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of toughening saggar of andalusite containing zirconium and preparation method |
| CN108218445A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of andalusite sillimanite saggar and preparation method |
| CN108558416A (en) * | 2017-12-24 | 2018-09-21 | 万燕杰 | A kind of ceramic firing kiln furnitures and preparation method |
| CN112094127A (en) * | 2020-09-25 | 2020-12-18 | 南阳开元高温新材料有限公司 | Manufacturing process of kyanite tailing series sagger |
| CN112409000A (en) * | 2020-11-24 | 2021-02-26 | 湖南仁海科技材料发展有限公司 | Mullite push plate for ceramic metallization furnace and preparation method thereof |
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| CN103626505A (en) * | 2013-12-04 | 2014-03-12 | 长兴宏业高科高温耐火材料有限公司 | High-temperature andalusite push plate and preparation method |
| CN108069708A (en) * | 2017-12-24 | 2018-05-25 | 万燕杰 | A kind of high thermal shock long-life saggar and preparation method |
| CN108218444A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of toughening saggar of andalusite containing zirconium and preparation method |
| CN108218445A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of andalusite sillimanite saggar and preparation method |
| CN108558416A (en) * | 2017-12-24 | 2018-09-21 | 万燕杰 | A kind of ceramic firing kiln furnitures and preparation method |
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2017
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| CN103626505A (en) * | 2013-12-04 | 2014-03-12 | 长兴宏业高科高温耐火材料有限公司 | High-temperature andalusite push plate and preparation method |
| CN108069708A (en) * | 2017-12-24 | 2018-05-25 | 万燕杰 | A kind of high thermal shock long-life saggar and preparation method |
| CN108218444A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of toughening saggar of andalusite containing zirconium and preparation method |
| CN108218445A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of andalusite sillimanite saggar and preparation method |
| CN108558416A (en) * | 2017-12-24 | 2018-09-21 | 万燕杰 | A kind of ceramic firing kiln furnitures and preparation method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108069708A (en) * | 2017-12-24 | 2018-05-25 | 万燕杰 | A kind of high thermal shock long-life saggar and preparation method |
| CN108218444A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of toughening saggar of andalusite containing zirconium and preparation method |
| CN108218445A (en) * | 2017-12-24 | 2018-06-29 | 万燕杰 | A kind of andalusite sillimanite saggar and preparation method |
| CN108558416A (en) * | 2017-12-24 | 2018-09-21 | 万燕杰 | A kind of ceramic firing kiln furnitures and preparation method |
| CN112094127A (en) * | 2020-09-25 | 2020-12-18 | 南阳开元高温新材料有限公司 | Manufacturing process of kyanite tailing series sagger |
| CN112094127B (en) * | 2020-09-25 | 2023-02-28 | 南阳开元高温新材料有限公司 | Manufacturing process of kyanite tailing series sagger |
| CN112409000A (en) * | 2020-11-24 | 2021-02-26 | 湖南仁海科技材料发展有限公司 | Mullite push plate for ceramic metallization furnace and preparation method thereof |
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