CN104744059B - A kind of dry coke quenching mullite brick and preparation method thereof - Google Patents
A kind of dry coke quenching mullite brick and preparation method thereof Download PDFInfo
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Abstract
The invention provides a kind of dry coke quenching mullite brick and preparation method thereof, comprising: the aluminium oxide of the white flint clay of the superfine high alumina of 5wt%～10wt%, the fused mullite of 45wt%～55wt%, the andalusite of 5wt%～15wt%, 5wt%～10wt%, the sillimanite of 12wt%～18wt%, 2wt%～6wt% and the clay of 2wt%～8wt%.The application, is internally formed microcrack evolution equation in dry coke quenching mullite brick organizational structure with superfine high alumina, fused mullite, white flint clay with andalusite, improves thermal shock resistance as aggregate；And due to andalusite and sillimanite primary mullite at different temperatures and secondary mullite, it is possible to increase the high volume stability of dry coke quenching mullite brick and high-temperature behavior.The apparent porosity of the application dry coke quenching mullite brick is less than 16%, and compressive resistance is higher than 90MPa, and wearability is less than 4cm3, thermal shock resistance is higher than 40 times.
Description
Technical field
The present invention relates to technical field of refractory materials, particularly relate to a kind of dry coke quenching mullite brick and preparation method thereof.
Background technology
Dry coke quenching technique is to use noble gas by a kind of extinguishing technique method of red burnt cooling down.In dry coke quenching technique
During, red Jiao loads from coke dry quenching furnace top, and cryogenic inert gas is blasted in the red focus layer of coke dry quenching furnace cooling section by circulating fan, inhales
Receiving red burnt sensible heat, the coke after cooling is discharged bottom coke dry quenching furnace, from coke dry quenching furnace ring-shaped flue high temperature inert gas stream out
Carrying out heat exchange through dry coke quenching process boilers, boiler produces steam, and the noble gas after cooling is again blasted dry by circulating fan
Putting out stove, noble gas recycles in the system closed.Dry coke quenching technique is in energy-saving and environmental protection and improves the aspects such as coke quality
It is better than coke wet quenching.
The refractory material that coke dry quenching furnace needs requires to have chemical resistance of concrete, wear-resisting, good high volume stability, resistance to
Wash away and thermal shock resistance.In traditional refractory material, common brick thermal shock resistance is general, but density is low, and anti-wear performance is the poorest；
Common high-alumina brick anti-wear performance improves, but thermal shock resistance is the poorest；The conventional raising of mullite brick thermal shock resistance still intensity, anti-wear performance are not
The highest；Common corundum brick wearability is good but thermal shock resistance is the poorest.Above-mentioned refractory material is all respectively arranged with pluses and minuses, it is impossible to meet coke dry quenching furnace
, the most easily there are the problems such as deformation, bonding, quick abrasion and peeling drop off, reduces fire proofed wood in extinguishing technique
The service life of material.
The Chinese patent of Application No. 201110395095.8 discloses a kind of mullite brick on coke dry quenching furnace, its
It is to use electrofused mullite and natural mullite to make aggregate, corundum and alumina powder as fine powder, and adds in substrate
Andalusite concentrate, thus improve the thermal shock resistance of brick, thermal shock resistance is up to more than 30 times, but the thermal shock resistance of this patent improves
Number of times is limited, the most relatively low.
Summary of the invention
This application provides a kind of dry coke quenching mullite brick and preparation method thereof, the dry coke quenching mullite brick that the application provides
There is thermal shock resistance and the high volume stability of excellence.
In view of this, this application provides a kind of dry coke quenching mullite brick, including:
Preferably, described aluminium oxide is activated alumina or calcined alumina.
Preferably, the content of described fused mullite is 47wt%～52wt%.
Preferably, the content of described andalusite is 8wt%～12wt%.
Present invention also provides the preparation method of a kind of dry coke quenching mullite brick, comprise the following steps:
By the superfine high alumina of 5wt%～10wt%, the fused mullite of 45wt%～55wt%, 5wt%～15wt%
Andalusite, the white flint clay of 5wt%～10wt%, the sillimanite of 12wt%～18wt%, the aluminium oxide of 2wt%～6wt%,
The clay of 2wt%～8wt% mixes with pulp-water, obtains pug；
It is dried after compressing for described pug, dried adobe is burnt till, obtains dry coke quenching mullite brick.
Preferably, in described fused mullite, the fused mullite granularity of 11wt%～21wt% is 3～5mm, 28wt%
～the fused mullite granularity of 38wt% is 1～the fused mullite granularity of 3mm, 15wt%～25wt% is 0～1mm,
The fused mullite granularity of 26wt%～36wt% is-200 mesh.
Preferably, in described andalusite, the andalusite granularity of 50wt%～70wt% is 1～3mm, 30wt%～50wt%
Andalusite granularity be 0～1mm.
Preferably, the granularity of described white flint clay is 1～3mm, and the granularity of described aluminium oxide is-5 μm, the grain of described clay
Degree is-200 mesh.
Preferably, the content of described pulp-water is 2.5wt%～3.5wt% of described pug.
Preferably, the proportion of described pulp-water is 1.15～1.25.
This application provides a kind of dry coke quenching mullite brick, comprising: the superfine high alumina of 5wt%～10wt%, 45wt%
～the white flint clay of the andalusite of the fused mullite of 55wt%, 5wt%～15wt%, 5wt%～10wt%, 12wt%～
The sillimanite of 18wt%, the aluminium oxide of 2wt%～6wt% and the clay of 2wt%～8wt%.The dry coke quenching that the application provides is not
Carry out stone brick with superfine high alumina, fused mullite, white flint clay, andalusite as aggregate, utilize each aggregate element density, elastic modelling quantity
And the difference of linear expansion coefficient, it is internally formed microcrack evolution equation in dry coke quenching mullite brick organizational structure, improves the thermal shock of brick
Stability, simultaneously because the andalusite added and sillimanite, both primary mullite and secondary mullites at different temperatures
Change, while generating mullite phase, produce lasting volumetric expansion, counteract brick high-temperature liquid-phase sintering shrinkage, improve brick
High volume stability and high-temperature behavior, and define transformation toughening, improve the thermal shock resistance of brick.It addition, the application
Superfine high alumina sinter, water absorption rate is low, the close height of body, densification, bulk density and the wearability of brick can be improved；Aluminium oxide has to be filled out
Use use as, make base portion tend to closestpacking, moreover it is possible to strengthen substrate, improve sintering activity, reduce sintering temperature, improve brick
Intensity, improve scour resistance and the erosion-resisting characteristics of brick；And fused mullite crystalline phase is column, needle-like, pin column is not come
Stone is mutually interspersed constitutes firm organizational structure, makes dry coke quenching mullite brick have good anti-erosion and scour resistance.
Detailed description of the invention
In order to further illustrate the present invention, the dry coke quenching mullite brick present invention provided below in conjunction with embodiment and system thereof
Preparation Method is described in detail.
Coke dry quenching furnace requires that refractory material must have resist chemical, wear-resisting, good high volume stability, resistance to punching
Brush and thermal shock resistance.Thus this application provides a kind of high density, low pore, high intensity, anti-wear performance and thermal shock resistance
Excellent dry coke quenching mullite brick and preparation method thereof.
This application provides a kind of dry coke quenching mullite brick, including:
The application dry coke quenching mullite brick, with superfine high alumina, fused mullite, white flint clay, andalusite as aggregate, utilizes
Each aggregate element density, elastic modelling quantity and the diversity of linear expansion coefficient, produce a large amount of micro-crack inside the organizational structure of brick,
Make owing to the stress produced at material internal that expands with heat and contract with cold is released, thus improve the resistance to sudden heating of material, significantly carry
The thermal shock resistance of high brick；And its main matter is fused mullite, thus add the refractoriness of dry coke quenching mullite brick, heat
Pinking and volume stability；The andalusite simultaneously added and sillimanite, both primary mullite and secondaries at different temperatures
Mullitization, while generating mullite phase, persistently produces certain volumetric expansion, counteracts brick high-temperature liquid-phase sintering and produces
Contraction, further increase high volume stability and the high-temperature behavior of brick, the internal transformation toughening of organizational structure, carry further
The high thermal shock resistance of brick.
High alumina according to chemical composition height is divided into 9 trades mark, and wherein superfine high alumina aluminum content is more than 88%.
Owing to superfine high alumina sinters, water absorption rate is low, the close height of body and densification, therefore the application is using superfine high alumina as dry coke quenching mullite
The component of brick, it is possible to increase the bulk density of brick and wearability.If the addition of described superfine high alumina is very few, then to dry coke quenching not
The bulk density carrying out stone brick is little with wearability raising effect, if addition is too much, then increases the thermal shock performance fall of cost and brick
Low.Herein described superfine high aluminium content is 5wt%～10wt%, and in certain embodiments, the content of described superfine high alumina is excellent
Electing 6.2wt%～9.3wt% as, in certain embodiments, the content of described superfine high alumina is preferably 7.5wt%～8.6wt%.
The source of herein described superfine high alumina is preferably Shanxi rotary kiln or shuttle kiln material.
Herein described fused mullite is as the main matter of dry coke quenching mullite, and its crystalline phase is needle-like or column, pin
Rod-like mullite is interspersed mutually constitutes firm skeleton, makes dry coke quenching mullite brick have a series of good performance, as high
Hot strength and refractoriness under load, good thermal shock resistance etc., the most also have that high-temerature creep amount is little, linear expansion coefficient is little, anti-ization
Learn the advantages such as aggressivity is strong.The addition of described fused mullite is too little or too much, all can affect combining of dry coke quenching mullite brick
Close performance.The content of herein described fused mullite is 45wt%～55wt%, and in certain embodiments, described sintering does not comes
The content of stone is preferably 47wt%～52wt%, and in certain embodiments, the content of described fused mullite is preferably 48wt%
～51.8wt%, in certain embodiments, the content of described fused mullite is preferably 49.2wt%～50.5wt%.The application
The source of described fused mullite has no particular limits, and All Pure Nature fused mullite is produced in Chenxi, preferable Hunan.
Andalusite is a kind of aluminium silicate mineral, and it is short cylinder or radiated aggregation, starts to convert at about 1400 DEG C
Become mullite, produce certain volume and expand, the thermal shock resistance of brick, volume stability, refractoriness under load and croop property can be improved
Deng.The content of herein described andalusite is 5wt%～15wt%, and in certain embodiments, the content of described andalusite is preferred
For 6.7wt%～13.9wt%；In certain embodiments, the content of described andalusite is preferably 7.6wt%～13wt%, one
In a little embodiments, the content of described andalusite is preferably 8wt%～12wt%, in certain embodiments, and containing of described andalusite
Amount is preferably 9.2wt%～11.8wt%.The content of described andalusite is too low, can affect the thermal shock resistance of dry coke quenching mullite brick
Energy.Herein described andalusite is preferably external import andalusite or domestic high-purity andalusite.
Herein described white flint clay sinters, and water absorption rate is low, fine and close, can reduce the porosity of dry coke quenching mullite brick,
Improve thermal shock resistance.The content of herein described white flint clay is 5wt%～10wt%, in certain embodiments, and described Bai Jiaobao
The content of stone is preferably 5.7wt%～9.2wt%, and in certain embodiments, the content of described white flint clay is preferably 6.2wt%
～8.6wt%, in certain embodiments, the content of described white flint clay is preferably 7.4wt%～8.0wt%, herein described
The content of white flint clay is too low, and its effect can not get playing, if too high levels, can affect bulk density and the wearability of brick.
Herein described white flint clay is preferably the white flint clay of the YNS44 trade mark.
According to the application, also including the aluminium oxide with filling effect in described dry coke quenching mullite brick, it makes substrate portion
Dividing and tend to closestpacking, described aluminium oxide can also strengthen substrate, improves sintering activity, reduces sintering temperature, improves the strong of brick
Degree, improves scour resistance and the erosion-resisting characteristics of brick.The content of herein described aluminium oxide is 2wt%～6wt%, at some
In embodiment, the content of described aluminium oxide is preferably 2.6wt%～5.4wt%, in certain embodiments, and containing of described aluminium oxide
Amount is preferably 3.2wt%～4.9wt%.Herein described aluminium oxide is preferably activated alumina or calcined alumina.
Herein described clay in dry coke quenching mullite brick can acceleration of sintering, reduce brick firing temperature.Described viscous
The content of soil is 2wt%～8wt%, and in certain embodiments, the content of described clay is preferably 2.5wt%～7.6wt%,
In some embodiments, the content of described clay is preferably 3.3wt%～7.0wt%, in certain embodiments, and containing of described clay
Amount is preferably 4.3wt%～6.2wt%, and in certain embodiments, the content of described clay is preferably 5.0wt%～5.8wt%.
The too high levels of described clay, then can make dry coke quenching mullite brick excess agglomeration, produces more eutectic, reduces the high temperatures of brick
Energy.
Present invention also provides the preparation method of a kind of dry coke quenching mullite brick, comprise the following steps:
By the superfine high alumina of 5wt%～10wt%, the fused mullite of 45wt%～55wt%, 5wt%～15wt%
Andalusite, the white flint clay of 5wt%～10wt%, the sillimanite of 12wt%～18wt%, the aluminium oxide of 2wt%～6wt%,
The clay of 2wt%～8wt% mixes with pulp-water, obtains pug；
It is dried after compressing for described pug, dried adobe is burnt till, obtains dry coke quenching mullite brick.
The application, during preparing dry coke quenching mullite brick, is first prepared for the pug of raw material mixing, then by mud
Material carries out suppressing, being dried and burn till, and i.e. obtains dry coke quenching mullite brick.
During preparing dry coke quenching mullite brick, based on fused mullite, in described fused mullite preferably
Granularity containing 11wt%～21wt% is the fused mullite granule of 3～5mm, and the granularity of 28wt%～38wt% is 1～3mm
Fused mullite granule, the granularity of 15wt%～25wt% is the fused mullite granule of 0～1mm, 26wt%～36wt%
The fused mullite fine powder that granularity is-200 mesh.
The granularity of herein described andalusite is preferably 1～3mm and 0～1mm, and wherein granularity is the andalusite of 1～3mm
Content is preferably 50wt%～70wt%, and granularity is that the content of the andalusite of 0～1mm is preferably 30wt%～50wt%.Described
The granularity of white flint clay is preferably 1～3mm.The granularity of described sillimanite is preferably-200 mesh, and the granularity of described aluminium oxide is-5 μ
M, the granularity of described clay is preferably-200 mesh.
In order to make the various component mix homogeneously of dry coke quenching mullite brick, the preparation of herein described pug preferably according under
Prepared by the process of stating:
By fused mullite fine powder that granularity is-200 mesh, the sillimanite fine powder of-200 mesh ,-5 μm alumina powder with-
The clay of 200 mesh premixes, and obtains premixing flour, and the time of described premix is 25～30min；
Paper pulp dry powder is mixed with water standing, obtains pulp-water；
Superfine high alumina particulate material, 3～5mm, 1～3mm by 3～5mm and the fused mullite particulate material of 0～1mm, 1～
The andalusite particulate material of white flint clay particulate material, 0～the 1mm and 1～3mm of 3mm is dry mixed, and adds pulp-water and mixes
Grind, be eventually adding premixing flour, quiet mixed, obtain pug.
Pulp-water proportion described in said process is preferably 1.15～1.25.The time of described standing is preferably 20～26h.
The described time being dry mixed is preferably 2～4min, and the time of described mixed grind is preferably 2～3min, and the described quiet mixed time is preferably
15～20min.Described pulp-water is 2.5wt%～3.5wt% of described pug.
Herein described pug is prepared the most according to the method described above and be ensure that each composition of fine powder is sufficiently mixed uniformly, and then
Ensure the uniform texture of dry coke quenching mullite brick.
After preparing pug, described pug is then pressed by the application, obtains adobe.Herein described adobe
Bulk density be preferably 2.58～2.62g/cm3, then the adobe after molding is dried.Described adobe is through dried
Residual moisture≤0.8%.
According to the present invention, finally dried adobe is burnt till.Described burning till preferably is carried out under weak oxide atmosphere,
The described temperature burnt till is preferably 1420 DEG C～1450 DEG C, and temperature retention time is preferably 8～10h.
Most of raw material of the application is through oversintering, and water absorption rate is relatively low, simultaneously the mullitization degree of sillimanite in substrate
Higher, pin column crystal is grown preferably, and the pin rod-like mullite formed with aggregates grain edges engages each other staggered in net
Network structure, enhances the combination with aggregate, more than product mullite brick mechanical strength 90MPa of the present invention, apparent porosity 16% with
Under, bulk density is higher than 2.52g/cm3, anti-wear performance 4cm3Below.
In order to be further appreciated by the present invention, the dry coke quenching mullite brick present invention provided below in conjunction with embodiment and system thereof
Preparation Method is described in detail, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
Dry coke quenching mullite brick of the present invention, represents with weight percentage, and described dry coke quenching mullite brick is by superfine high alumina
7%, All Pure Nature fused mullite 51%, andalusite 10%, white flint clay 8%, sillimanite 15%, alumina powder 4% and knot
Close clay 5% to form.
Wherein superfine high alumina is the particulate material of Shanxi rotary kiln 5～3mm, and All Pure Nature fused mullite 51% is by 8%
Degree is 5～3mm fused mullite particulate material, 17% granularity 3～1mm fused mullite particulate material, 10% granularity 1～0mm sintering
Mullite particle material and 16% granularity-200 mesh fused mullite fine powder composition.Andalusite be by 5% granularity be 3～1mm red
Pillar particulate material and 5% granularity are 1～0mm andalusite particulate material composition, and the place of production is South Africa.White flint clay is the YNS44 trade mark,
Granularity is the particulate material of 3～1mm.Sillimanite is Lingshou sillimanite, and granularity is the fine powder material of-200 mesh.Alumina powder is calcining
Type, granularity is-5 μm.Bonding clay is that sieve mud is tieed up in Guangxi, and granularity is-200 mesh.
Preparation method:
Substrate premixes: enter pre-together with bonding clay powder by fused mullite fine powder, sillimanite fine powder, alumina powder
Mixing device premixes, and does time 25～30min in advance.
Prepared by pulp-water: join in special mixing plant by paper pulp dry powder, and add water stirring, is stirred for all after standing 24h
Even use, preparation specific gravity control is 1.15～1.25.
Dispensing: after particulate material is joined pressure puddle mixer, be first dry mixed 2～4min, add pulp-water solution mixed grind 2～
3min, pulp-water addition is the 2.5～3.5% of total raw material amount, adds premixing flour, only does time 15～20min, discharging,
Make pug；
Molding: pug brick machine is pressed into adobe, mould brick base bulk density presses 2.58～2.62g/cm3Control；
It is dried: adobe after molding is dried in infrared ray kiln, dried adobe residual moisture≤0.8%；
Burn till: burn till in dried adobe is pushed into 125.4m tunnel cave, weak oxide atmosphere, the highest burn till temperature
Spending 1420 DEG C～1450 DEG C, the temperature retention time under maximum sintering temperature is 8～10h, and after insulation, natural cooling gets final product kiln discharge.Detection
The performance of dry coke quenching mullite brick prepared by the present embodiment, examination criteria particularly as follows:
According to the EDTA volumetric determination in GB/T 6900.4-2006 clay, high alumina refractories chemical analysis method
Alumina content in refractory brick；
According to the phenanthrolene luminosity in GB/T 6900.3-2006 clay, high alumina refractories chemical analysis method
Method determines ferric oxide content in refractory brick；
According to shaping refractory product apparent porosity fine and close in GB/T 2997-2000, water absorption rate, bulk density and true pore
The apparent porosity of rate measurement of test method refractory brick and bulk density；
The refractory brick according to GB/T 5072-1985 densification shaping refractory product cold crushing strength measurement of test method
Compressive resistance；
Test resistance to according to YB/T 370-1995 refractory product refractoriness under load test method (non-differential-temperature-raising method)
The refractoriness under load of firebrick；
The wearability of refractory brick is tested according to GB/T 18301-2001 refractory material room temperature abrasion test method；
Refractory brick is tested according to YB/T 376.1-1995 refractory product thermal shock resistance test method (water-chilling method)
Thermal shock resistance.Testing result is as shown in table 1.
Embodiment 2
Same as in Example 1, difference is: dry coke quenching mullite brick of the present invention, represents with weight percentage, by superfine
High alumina 10%, All Pure Nature fused mullite 49%, andalusite 13%, white flint clay 6%, sillimanite 13%, alumina powder 5%
Form with bonding clay 4%.
Wherein All Pure Nature fused mullite be by 6% granularity be 5～3mm fused mullite particulate material, 14% granularity 3～
1mm fused mullite particulate material, 12% granularity 1～0mm fused mullite particulate material and 17% granularity-200 mesh fused mullite
Fine powder forms.Andalusite is by the andalusite particulate material that 8% granularity is 3～1mm and andalusite particulate material that 5% granularity is 1～0mm
Composition, the place of production is Xinjiang.Alumina powder is active form, and granularity is-5 μm.Bonding clay is Suzhou white clay, and granularity is-200
Mesh.The performance of dry coke quenching mullite brick prepared by detection the present embodiment, testing result is as shown in table 1.
Embodiment 3
Same as in Example 1, difference is: dry coke quenching mullite brick of the present invention, represents with weight percentage, by superfine
High alumina 5%, All Pure Nature fused mullite 48%, andalusite 15%, white flint clay 10%, sillimanite 12%, alumina powder 6%
Form with bonding clay 4%.
Wherein All Pure Nature fused mullite be by 10% granularity be 5～3mm fused mullite particulate material, 14% granularity be 3
～1mm fused mullite particulate material, 9% granularity 1～0mm fused mullite particulate material and 15% granularity-200 mesh fused mullite
Fine powder forms.Andalusite is by the andalusite particulate material that 10% granularity is 3～1mm and andalusite granule that 5% granularity is 1～0mm
Material composition, the place of production is South Africa.Alumina powder is active form, and granularity is-5 μm.Dry coke quenching prepared by detection the present embodiment does not comes
The performance of stone brick, testing result is as shown in table 1.
Embodiment 4
Same as in Example 1, difference is: dry coke quenching mullite brick of the present invention, represents with weight percentage, by superfine
High alumina 8%, All Pure Nature fused mullite 52%, andalusite 8%, white flint clay 5%, sillimanite 18%, alumina powder 3%,
Form with bonding clay 6%.
Wherein All Pure Nature fused mullite by 7% granularity be 5～3mm fused mullite particulate material, 18% granularity be 3～
1mm fused mullite particulate material, 12% granularity are that 1～0mm fused mullite particulate material and 15% granularity sinter not for-200 mesh
Carry out stone fine powder composition.Andalusite is 1～0mm andalusite granule by the andalusite particulate material that 4% granularity is 3～1mm and 4% granularity
Material composition, the place of production is Xinjiang.Bonding clay is Suzhou white clay, and granularity is-200 mesh.Dry coke quenching prepared by detection the present embodiment is not
Carrying out the performance of stone brick, testing result is as shown in table 1.
Embodiment 5
Identical with embodiment, difference is: dry coke quenching mullite brick of the present invention, represents with weight percentage, by superfine
High alumina 6%, All Pure Nature fused mullite 55%, andalusite 6%, white flint clay 9%, sillimanite 16%, alumina powder 5%,
Form with bonding clay 3%.
Wherein All Pure Nature fused mullite be by 9% granularity be 5～3mm fused mullite particulate material, 20% granularity be 3～
1mm fused mullite particulate material, 10% granularity are that 1～0mm fused mullite particulate material and 16% granularity sinter not for-200 mesh
Carry out stone fine powder composition.Andalusite is 1～0mm andalusite granule by the andalusite particulate material that 3% granularity is 3～1mm and 3% granularity
Material composition, the place of production is Xinjiang.The performance of dry coke quenching mullite brick prepared by detection the present embodiment, testing result is as shown in table 1.
Embodiment 6
Same as in Example 1, difference is: dry coke quenching mullite brick of the present invention, represents with weight percentage, by superfine
High alumina 9%, All Pure Nature fused mullite 51%, andalusite 12%, white flint clay 7%, sillimanite 14%, alumina powder 5%,
Form with bonding clay 2%.
Wherein All Pure Nature fused mullite by 7% granularity be 5～3mm fused mullite particulate material, 16% granularity be 3～
1mm fused mullite particulate material, 10% granularity 1～0mm fused mullite particulate material and 18% granularity-200 mesh fused mullite
Fine powder forms.Andalusite is by the andalusite particulate material that 8% granularity is 3～1mm and andalusite particulate material that 4% granularity is 1～0mm
Composition, the place of production is South Africa.Alumina powder is active form, and granularity is-5 μm.Bonding clay is Suzhou white clay, and granularity is-200
Mesh.The performance of dry coke quenching mullite brick prepared by detection the present embodiment, testing result is as shown in table 1.
The performance data table of dry coke quenching mullite brick prepared by table 1 embodiment
Can be seen that product indices of the present invention is all higher than prior art mullite brick market, relatively from above-described embodiment
The low porosity can improve product corrosion resistance, and higher body is close and compressive resistance can improve Wear Resistance and scour resistance,
Higher thermal shock number of times can improve product heat shock resistance and spalling resistance, and good thermal shock and anti-wear performance guarantee dry coke quenching safety
Run and extend dry coke quenching furnace life.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a dry coke quenching mullite brick, including:
Dry coke quenching mullite brick the most according to claim 1, it is characterised in that described aluminium oxide is activated alumina or forges
Burn aluminium oxide.
Dry coke quenching mullite brick the most according to claim 1, it is characterised in that the content of described fused mullite is
47wt%～52wt%.
Dry coke quenching mullite brick the most according to claim 1, it is characterised in that the content of described andalusite be 8wt%～
12wt%.
5. a preparation method for dry coke quenching mullite brick, comprises the following steps:
By the superfine high alumina of 5wt%～10wt%, the fused mullite of 45wt%～55wt%, the red post of 5wt%～15wt%
Stone, the white flint clay of 5wt%～10wt%, the sillimanite of 12wt%～18wt%, the aluminium oxide of 2wt%～6wt%, 2wt%
～the clay of 8wt% mixes with pulp-water, obtain pug；
It is dried after compressing for described pug, dried adobe is burnt till, obtains dry coke quenching mullite brick.
Preparation method the most according to claim 5, it is characterised in that 11wt%～21wt% in described fused mullite
Fused mullite granularity is 3～the fused mullite granularity of 5mm, 28wt%～38wt% is 1～3mm, 15wt%～25wt%
Fused mullite granularity be 0～the fused mullite granularity of 1mm, 26wt%～36wt% is-200 mesh.
Preparation method the most according to claim 5, it is characterised in that the red post of 50wt%～70wt% in described andalusite
Stone granularity is 1～the andalusite granularity of 3mm, 30wt%～50wt% is 0～1mm.
Preparation method the most according to claim 5, it is characterised in that the granularity of described white flint clay is 1～3mm, described
The granularity of aluminium oxide is-5 μm, and the granularity of described clay is-200 mesh.
Preparation method the most according to claim 5, it is characterised in that the content of described pulp-water is described pug
2.5wt%～3.5wt%.
Preparation method the most according to claim 5, it is characterised in that the proportion of described pulp-water is 1.15～1.25.
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| CN105541356B (en) * | 2015-12-25 | 2018-10-02 | 山东鲁阳节能材料股份有限公司 | A kind of high temperature resistant clay and preparation method thereof |
| CN107619286A (en) * | 2017-09-13 | 2018-01-23 | 浙江招通高温材料有限公司 | A kind of preparation method of corundum-mullite sagger |
| CN108484189A (en) * | 2018-06-08 | 2018-09-04 | 郑州凯翔耐火材料有限公司 | A kind of high thermal shock bauxite high-alumina brick and its production technology |
| CN111423241A (en) * | 2020-03-31 | 2020-07-17 | 中冶焦耐(大连)工程技术有限公司 | Mullite brick with fiber toughening function and preparation method thereof |
| CN111302818A (en) * | 2020-04-22 | 2020-06-19 | 河南省宏达炉业有限公司 | Anchoring brick and manufacturing method thereof |
| CN111718200A (en) * | 2020-05-29 | 2020-09-29 | 郑州安耐克实业有限公司 | Bottom creep clay brick for hot blast stove and preparation method thereof |
| CN113773096A (en) * | 2021-09-27 | 2021-12-10 | 山东耐材集团鲁耐窑业有限公司 | High thermal shock high strength high-load soft coke oven sillimanite brick 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 |
| CN117263662B (en) * | 2023-11-21 | 2024-02-27 | 山东耐材集团鲁耐窑业有限公司 | Low-internal-stress dry quenching column part brick and preparation method thereof |
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