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CN108069708A - A kind of high thermal shock long-life saggar and preparation method - Google Patents

A kind of high thermal shock long-life saggar and preparation method Download PDF

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Publication number
CN108069708A
CN108069708A CN201711413835.XA CN201711413835A CN108069708A CN 108069708 A CN108069708 A CN 108069708A CN 201711413835 A CN201711413835 A CN 201711413835A CN 108069708 A CN108069708 A CN 108069708A
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saggar
thermal shock
life
long
andalusite
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万燕杰
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    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16Shaped 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
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    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66Monolithic refractories or refractory mortars, including those whether or not containing clay
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00Supports, screens, or the like for the charge within the furnace
    • F27D5/0006Composite supporting structures
    • F27D5/0012Modules of the sagger or setter type; Supports built up from them
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    • C04B2235/32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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    • C04B2235/3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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    • C04B2235/3231Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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Abstract

The present invention relates to a kind of high thermal shock long-life saggar and preparation methods.Andalusite particle, magnesium aluminate gel, calcia-stabilised zirconia micro mist, andalusite activity micro mist, alumina powder aggregate, Suzhou soil, additional bonding agent 0.1% ~ 0.15%, by raw material according to different weight percent, the product of the present invention is prepared for through material mixing, molding, drying, final high temperature calcining, this contains zirconium andalusite toughening saggar product and 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

A kind of high thermal shock long-life saggar and preparation method
Technical field
It is main to propose a kind of toughening saggar of andalusite containing zirconium and preparation side the invention belongs to technical field of fire-resistant material 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, one kind andalusite containing zirconium toughening of service life length Saggar and preparation method.
Purpose to realize the present invention, used technical solution are:A kind of toughening saggar of andalusite containing zirconium, it mainly by It is prepared by the raw material of following weight percent:Andalusite particle 20%-30%, magnesium aluminate gel 20-30%, yttrium stable zirconium oxide are micro- Powder 5-10%, andalusite activity micro mist 10% ~ 20%, alumina powder aggregate 15%-20%, Suzhou soil 3% ~ 5%, additional knot Mixture 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;Magnesium aluminate 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 the toughening of andalusite containing zirconium saggar, comprises the technical steps that:(1) by raw material components according to not Stirring 30min in vertical stainless steel mixer is put into weight percent to be uniformly mixed.(2)Prepare the saggar mold to be done; (3) step will be passed through(1)Material with 630 tons of press cold moudlings, 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, when clinkering zone heat preservation 4-6 is small, ceramic saggar is obtained.
The present invention beneficial features be:(1)The present invention uses andalusite, zirconium oxide as primary raw material, in high temperature sintering mistake Cheng Zhong, andalusite start to change into acicular mullite, can step-reaction in use, can be to avoid under long-time service Saggar contraction distortion keeps volume stability, extends material lifetime;Magnesium aluminate gel active is big, and dispersiveness is high, also can be with andalusite The flexible glass phase reaction of precipitation generates the good forsterite of performance, improves performance.(2)The present invention selects andalusite activity micro- Powder, purity is high, and impurity content is few, and activity is big, can substitute common micro mist and use, and because fine size, can mix very Uniformly, be conducive to improve substrate performance, after addition, hot high temperature break resistant intensity improves 6 times or more compared with traditional product.(3)This The alumina powder aggregate of invention is convenient for packing space when having compacting, spherical agglomerated to know from experience contraction when being sintered under high temperature, so Aggregate can form a circumferential weld with periphery substance afterwards so that product has toughness at high temperature, offsets the function of thermal stress, adds The zirconium oxide product entered can not only improve the thermal shock resistance of saggar, moreover it is possible to greatly improve product corrosion resistance.Additional combination Agent room temperature has combination, after discharging at high temperature, retains three kinds of different stomatas, is conducive to improve the thermal shock resistance of kiln furnitures And toughness.The ceramic box alms bowl volume stability of method manufacture using the present invention, good thermal shock(1100 DEG C of water cooling > 100 times)Than Similar product service life improves 4 times or more.
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%, magnesium aluminate gel 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 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%, magnesium aluminate gel 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 mixer, Mold is put into, through 630 tons of press cold moudlings, is calcined after natural drying with the high temperature kiln of 20m long at 1480 DEG C, and keeps the temperature 6 Hour.

Claims (7)

1. a kind of high thermal shock long-life saggar, it is characterised in that:It is mainly prepared by the raw material of following weight percent: Andalusite particle 20%-30%, magnesium aluminate gel 20-30%, calcia-stabilised zirconia 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%.
2. high thermal shock long-life saggar according to claim 1, it is characterised in that:The additional bonding agent for paraffin, Whole in carboxymethyl cellulose, yellow starch gum.
3. high thermal shock long-life saggar according to claim 1, it is characterised in that:The andalusite particle Al2O3Weight It is 59% or so to measure percentage composition, and iron content weight percentage is < 0.5% or so;Aluminic acid magnesium granules Al2O3Weight percent contains It measures as 59% or so, iron content weight percentage is < 0.5% or so.
4. high thermal shock long-life saggar according to claim 1, it is characterised in that:The grain of the andalusite activity micro mist Footpath is 2 microns, alumina content >=60%, iron content < 0.5%.
5. high thermal shock long-life saggar according to claim 1, it is characterised in that:The grain size of the zirconia powder is Between 5000-8000 mesh.
6. high thermal shock long-life saggar according to claim 1, it is characterised in that:The alumina powder aggregate is The spherical agglomerates that alumina powder shapes at normal temperatures, when compacting, can keep the integrality of ball.
7. a kind of preparation method of high thermal shock long-life 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 mixer and is uniformly mixed;(2)Prepare the saggar mold to be done; (3) Step will be passed through(1)Material with 630 tons of press cold moudlings, spontaneously dry;(4) step will be passed through(3)Dry material is used The high temperature kiln of 20m long when clinkering zone heat preservation 4-6 is small, obtains ceramic saggar through 1450 DEG C ~ 1480 DEG C of temperature calcination.
CN201711413835.XA 2017-12-24 2017-12-24 A kind of high thermal shock long-life saggar and preparation method Pending CN108069708A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
CN109320222A (en) * 2018-11-09 2019-02-12 洛阳索莱特材料科技有限公司 A kind of preparation method of dichroite-mullite ceramics saggar
CN109534805A (en) * 2018-10-16 2019-03-29 无锡顺佳特种陶瓷有限公司 Lithium battery powder sintering forsterite-corundum sagger and preparation method thereof
CN111848199A (en) * 2020-08-11 2020-10-30 长兴鑫原耐火材料科技有限公司 High-thermal-shock long-service-life sagger and preparation method thereof
CN112456982A (en) * 2020-12-16 2021-03-09 刘永杰 Formula and method for preparing sagger for lithium battery positive electrode material

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* Cited by examiner, † Cited by third party
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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
CN103724023A (en) * 2013-12-16 2014-04-16 广东羚光新材料股份有限公司 Sintering bearing plate for sintering kiln, and preparation method of sintering bearing plate
CN108083821A (en) * 2017-12-24 2018-05-29 万燕杰 A kind of ceramics saggar and preparation method
CN108218445A (en) * 2017-12-24 2018-06-29 万燕杰 A kind of andalusite sillimanite 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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
CN103724023A (en) * 2013-12-16 2014-04-16 广东羚光新材料股份有限公司 Sintering bearing plate for sintering kiln, and preparation method of sintering bearing plate
CN108083821A (en) * 2017-12-24 2018-05-29 万燕杰 A kind of ceramics saggar and preparation method
CN108218445A (en) * 2017-12-24 2018-06-29 万燕杰 A kind of andalusite sillimanite 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 (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
CN109534805A (en) * 2018-10-16 2019-03-29 无锡顺佳特种陶瓷有限公司 Lithium battery powder sintering forsterite-corundum sagger and preparation method thereof
CN109534805B (en) * 2018-10-16 2021-11-26 无锡顺佳特种陶瓷有限公司 Forsterite-corundum sagger for sintering lithium battery powder and preparation method thereof
CN109320222A (en) * 2018-11-09 2019-02-12 洛阳索莱特材料科技有限公司 A kind of preparation method of dichroite-mullite ceramics saggar
CN109320222B (en) * 2018-11-09 2021-06-11 洛阳索莱特材料科技有限公司 Preparation method of cordierite-mullite ceramic sagger
CN111848199A (en) * 2020-08-11 2020-10-30 长兴鑫原耐火材料科技有限公司 High-thermal-shock long-service-life sagger and preparation method thereof
CN112456982A (en) * 2020-12-16 2021-03-09 刘永杰 Formula and method for preparing sagger for lithium battery positive electrode material

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