CN108218444A - A kind of toughening saggar of andalusite containing zirconium and preparation method - Google Patents

A kind of toughening saggar of andalusite containing zirconium and preparation method Download PDF

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Publication number
CN108218444A
CN108218444A CN201711413867.XA CN201711413867A CN108218444A CN 108218444 A CN108218444 A CN 108218444A CN 201711413867 A CN201711413867 A CN 201711413867A CN 108218444 A CN108218444 A CN 108218444A
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andalusite
saggar
toughening
containing zirconium
micro mist
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万燕杰
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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
    • 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
    • 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
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • 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
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
    • 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
    • C04B2235/3246—Stabilised zirconias, e.g. YSZ or cerium stabilised zirconia
    • 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
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • 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
    • 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 toughening saggar of andalusite containing zirconium and preparation methods.The saggar uses andalusite particle, magnesium aluminate, yttrium stable zirconium oxide micro mist, andalusite activity micro mist, alumina powder aggregate, Suzhou soil are primary raw material, 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 toughening saggar of andalusite containing zirconium 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, 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 one kind andalusite containing zirconium toughening 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 20-30%, yttrium stable 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；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 blender is put into weight percent to be 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.
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 and magnesium aluminate 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%, magnesium aluminate 25%, zirconium oxide micro mist 8%, andalusite Active micro mist 20%, alumina powder aggregate 15%, Suzhou soil 3%, additional bonding agent 0.1%.Processing step is as follows： Above-mentioned raw materials component according to weight percent in vertical stainless steel blender is stirred evenly, mold is put into, through 630 tons of 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%, magnesium aluminate 25%, oxidation Zirconium 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 according to weight percent in vertical stainless steel blender is stirred evenly, is put into mould Tool, 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 hours.

Claims (7)

1. a kind of toughening saggar of andalusite containing zirconium, it is characterised in that：It is mainly prepared by the raw material of following weight percent： Andalusite particle 20%-30%, magnesium aluminate 20-30%, yttrium stable 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%.
2. the toughening of andalusite containing zirconium saggar 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 toughening of andalusite containing zirconium saggar according to claim 1, it is characterised in that：The andalusite particle Al2O3 Weight percentage is 59% or so, and iron content weight percentage is ＜ 0.5% or so；Magnesium aluminate Al2O3Weight percentage It is 59% or so, iron content weight percentage is ＜ 0.5% or so.
4. the red toughening of andalusite containing zirconium saggar 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 toughening of andalusite containing zirconium saggar according to claim 1, it is characterised in that：The grain size of the zirconia powder is Between 5000-8000 mesh.
6. the toughening of andalusite containing zirconium saggar according to claim 1, it is characterised in that：The alumina powder aggregate It 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 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 blender is put into weight percent to be 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.
CN201711413867.XA 2017-12-24 2017-12-24 A kind of toughening saggar of andalusite containing zirconium and preparation method Pending CN108218444A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
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
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

Citations (5)

* 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
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
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

Patent Citations (5)

* 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
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
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 (4)

* Cited by examiner, † Cited by third party
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
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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Application publication date: 20180629