CN108218445A - A kind of andalusite sillimanite saggar and preparation method - Google Patents
A kind of andalusite sillimanite saggar and preparation method Download PDFInfo
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- CN108218445A CN108218445A CN201711413882.4A CN201711413882A CN108218445A CN 108218445 A CN108218445 A CN 108218445A CN 201711413882 A CN201711413882 A CN 201711413882A CN 108218445 A CN108218445 A CN 108218445A
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- Prior art keywords
- andalusite
- sillimanite
- saggar
- micro mist
- weight percentage
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B35/185—Mullite 3Al2O3-2SiO2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D5/00—Supports, screens, or the like for the charge within the furnace
- F27D5/0006—Composite supporting structures
- F27D5/0012—Modules of the sagger or setter type; Supports built up from them
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/3231—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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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to a kind of andalusite sillimanite saggar and preparation methods.The andalusite sillimanite 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, it is prepared for the product of the present invention through material mixing, molding, drying, final high temperature calcining, which overcomes that existing there are the defects such as service life is not long, stability is poor, flexural strength is low.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 andalusite sillimanite saggar and preparation side
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, therefore 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, preferably to product dirt
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 led to 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.
Invention content
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, service life length saggar and preparation method.
Purpose to realize the present invention, used technical solution are：A kind of andalusite sillimanite saggar, it mainly by with
It is prepared by the raw material of lower weight percent：Andalusite particle 20%-30%, Sillimanite Particles 20-30%, zirconium oxide micro mist 5-10%,
Andalusite activity micro mist 10% ~ 20%, alumina powder aggregate 15%-20%, Suzhou soil 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 Suzhou soil, 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 andalusite sillimanite saggar, comprises the technical steps that：(1) by raw material components according to difference
Weight percent is put into stirring 30min in vertical stainless steel blender and is uniformly mixed.（2）Prepare the saggar mold to be done； (3)
Step will be passed through（1）630 tons of press cold moudlings of material, spontaneously dry；(4) step will be passed through（3）Dry material is used
The high temperature kiln of 20m long keeps the temperature 4-6 hours, obtains ceramic saggar through 1450 DEG C ~ 1480 DEG C of temperature calcination, clinkering zone.
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 be converted to acicular mullite, and its transition temperature is different, can in use gradually
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 of 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 has convenient for filling space during 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, but the present invention is not only limited in detail below for this
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%, Suzhou soil 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 blender 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 keeps the temperature 5 hours.
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%, Suzhou soil 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 blender,
Mold is put into, through 630 tons of press cold moudlings, is calcined at 1480 DEG C with the high temperature pusher oil kiln of 20m long after natural drying, and
Heat preservation 6 hours.
Claims (7)
1. a kind of compound saggar of andalusite sillimanite, it is characterised in that：It mainly by the raw material of following weight percent prepare and
Into：Andalusite particle 20%-30%, Sillimanite Particles 20-30%, zirconium oxide micro mist 5-10%, andalusite activity micro mist 10% ~
20%, alumina powder aggregate 15%-20%, ball clay 3% ~ 5%, additional bonding agent 0.1% ~ 0.15%.
2. the compound saggar of andalusite sillimanite according to claim 1, it is characterised in that：The additional bonding agent is stone
Whole in wax, carboxymethyl cellulose, yellow starch gum.
3. the compound saggar of andalusite sillimanite according to claim 1, it is characterised in that：The andalusite particle
Al2O3Weight percentage is 59% or so, and iron content weight percentage is ＜ 0.5% or so；Sillimanite Particles Al2O3Weight
Percentage composition is 59% or so, and iron content weight percentage is ＜ 0.5% or so.
4. the compound saggar of andalusite sillimanite according to claim 1, it is characterised in that：The andalusite activity micro mist
Grain size for 2 microns, alumina content >=60%, iron content ＜ 0.5%.
5. the compound saggar of andalusite sillimanite according to claim 1, it is characterised in that：The grain size of the zirconia powder
Between 5000-8000 mesh.
6. the compound saggar of andalusite sillimanite according to claim 1, it is characterised in that：The alumina powder is reunited
Body is the spherical agglomerates that alumina powder shapes at normal temperatures, and when compacting can keep the integrality of ball.
7. a kind of preparation method of the compound saggar of andalusite sillimanite, comprises the technical steps that：(1) by raw material components according to
Different weight percentage is put into stirring 30min in vertical stainless steel blender and is uniformly mixed；（2）Prepare the saggar mold to be done；
(3) step will be passed through（1）630 tons of press cold moudlings of material, spontaneously dry；(4) step will be passed through（3）Dry material
With the high temperature kiln of 20m long through 1450 DEG C ~ 1480 DEG C of temperature calcination, clinkering zone keeps the temperature 4-6 hours, obtains ceramic saggar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413882.4A CN108218445A (en) | 2017-12-24 | 2017-12-24 | A kind of andalusite sillimanite saggar and preparation method |
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| CN201711413882.4A CN108218445A (en) | 2017-12-24 | 2017-12-24 | A kind of andalusite sillimanite saggar and preparation method |
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| CN201711413882.4A Pending CN108218445A (en) | 2017-12-24 | 2017-12-24 | A kind of andalusite sillimanite saggar and preparation method |
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Cited By (5)
| 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 |
| CN108083821A (en) * | 2017-12-24 | 2018-05-29 | 万燕杰 | A kind of ceramics 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 |
| 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 |
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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 |
| CN108083821A (en) * | 2017-12-24 | 2018-05-29 | 万燕杰 | A kind of ceramics 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 |
| CN108558416A (en) * | 2017-12-24 | 2018-09-21 | 万燕杰 | A kind of ceramic firing kiln furnitures and preparation method |
-
2017
- 2017-12-24 CN CN201711413882.4A patent/CN108218445A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108083821A (en) * | 2017-12-24 | 2018-05-29 | 万燕杰 | A kind of ceramics 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 |
| CN108558416A (en) * | 2017-12-24 | 2018-09-21 | 万燕杰 | A kind of ceramic firing kiln furnitures and preparation method |
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 |
| CN108083821A (en) * | 2017-12-24 | 2018-05-29 | 万燕杰 | A kind of ceramics 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 |
| 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 |
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