CN104129921B - Alumina silicate fibre and preparation method thereof - Google Patents
Alumina silicate fibre and preparation method thereof Download PDFInfo
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- CN104129921B CN104129921B CN201410407796.2A CN201410407796A CN104129921B CN 104129921 B CN104129921 B CN 104129921B CN 201410407796 A CN201410407796 A CN 201410407796A CN 104129921 B CN104129921 B CN 104129921B
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Abstract
The invention provides a kind of preparation method of alumina silicate fibre, comprise the following steps：By raw mineral materials raw material crush, melting, into fibre treatment after obtain alumina silicate fibre；Al in the raw mineral materials raw material2O3And SiO2Weight/mass percentage composition sum be more than 95%.The creative use raw mineral materials raw material of the present inventor directly prepare alumina silicate fibre, not only process is simple, calcination operation is avoided, and the alumina silicate fibre for preparing has good insulation, heat-insulating property, can meet the adiabatic heat-insulation needs in the major part such as electric power, petrochemical industry, metallurgy field.
Description
Technical field
The invention belongs to fibre technology field, more particularly to a kind of alumina silicate fibre and preparation method thereof.
Background technology
Alumina silicate fibre, is called ceramic fibre, is a kind of refractory material of novel light, with unit weight is light, high temperature resistant, heat
The advantages of good stability, pyroconductivity are low, thermal capacitance is small, resistance to mechanical is vibrated, expanded by heating is small, heat-proof quality is good, can after processing
It is made the products such as aluminosilicate fiberboard, alumina silicate fiber felt, alumina silicate fibre rope, alumina silicate fibre blanket.
The PRODUCTION TRAITS of China's alumina silicate fibre since the seventies in last century, it is main that low temperature silicic acid is carried out using flint clay
The production of aluminum fiber, the requirement with high-temperature field to alumina silicate fibre progressively have developed with alumina powder and stone again later
The production technology of sand mixture manufacturing alumina silicate fibre, or the compositions such as zirconium oxide, chromium oxide are added, made with improving alumina silicate fibre
With the technology of temperature, and preparation method technological requirement is high, is clinker and prepares or by troublesome operations such as high-temperature calcinations steps,
In order to meet demand of the market to alumina silicate fibre, numerous alumina silicate fibre manufacturing enterprises and scientific research institutions develop new work one after another
Skill.
The content of the invention
The alumina silicate fibre provided it is an object of the invention to provide a kind of preparation method of alumina silicate fibre, the present invention
Preparation method process is simple, low cost.
The invention provides a kind of preparation method of alumina silicate fibre, comprise the following steps：
By raw mineral materials raw material crush, melting, into fibre treatment after obtain alumina silicate fibre；
Al in the raw mineral materials raw material2O3And SiO2Weight/mass percentage composition sum be more than 95%.
Preferably, Al in the raw mineral materials raw material2O3Weight/mass percentage composition be q, 0% ＜ q≤45%, Al2O3
And SiO2Weight/mass percentage composition sum be more than 95%.
Preferably, Al in the raw mineral materials raw material2O3Weight/mass percentage composition be m, the 45% ＜ m ＜ 48%,
Al2O3And SiO2Weight/mass percentage composition sum be more than 96%.
Preferably, Al in the raw mineral materials raw material2O3Weight/mass percentage composition be n, 48%≤n ＜ 53%,
Al2O3And SiO2Weight/mass percentage composition sum be more than 98%.
Preferably, Al in the raw mineral materials raw material2O3Weight/mass percentage composition be more than 53%, Al2O3And SiO2Matter
Amount percentage composition sum is more than 99%.
Preferably, the particle diameter of the crushing is 1~20mm.
Preferably, the raw mineral materials raw material are selected from Raolinite, diaspore, illite, pyrophillite, alumine, indigo plant
One or more in spar, sillimanite, andalusite and quartz sand.
The invention provides a kind of alumina silicate fibre, the preparation method as described in the claims any one is prepared into
Arrive.
The invention provides a kind of aluminum silicate fibre product, including the alumina silicate fibre described in the claims.
The invention provides a kind of preparation method of aluminum silicate fibre product, including described in the claims any one
Preparation method.
Compared with prior art, the invention provides a kind of preparation method of alumina silicate fibre, comprise the following steps：By ore deposit
Raw material raw material crush, melting, into fibre treatment after obtain alumina silicate fibre；Al in the raw mineral materials raw material2O3And SiO2Matter
Amount percentage composition sum is more than 95%.The creative use raw mineral materials raw material of the present inventor directly prepare alumina silicate fibre,
Not only process is simple, it is to avoid calcination operation, and the alumina silicate fibre for preparing has good insulation, heat-insulating property,
The adiabatic heat-insulation needs in the major part such as electric power, petrochemical industry, metallurgy field can be met.
Specific embodiment
The invention provides a kind of preparation method of alumina silicate fibre, comprise the following steps：
By raw mineral materials raw material crush, melting, into fibre treatment after obtain alumina silicate fibre；
Al in the raw mineral materials raw material2O3And SiO2Weight/mass percentage composition sum be more than 95%.
In the present invention with raw mineral materials raw material as raw material, alumina silicate fibre is obtained after crushing, melting, processed into fibre.
Generally believe that only clinker can prepare alumina silicate fibre in the industry at present, and in raw material mineral containing Free water,
Constitution water and other organic principles, these compositions can be discharged in gaseous form during high temperature melt, can cause the working of a furnace
Shakiness, influences into fine quality, can also make high-temperature fusion liquid bubbling, there is certain danger.Therefore mined raw ore raw material without
Method is directly produced alumina silicate fibre, so not any technology is disclosed and prepares alumina silicate fibre with raw mineral materials raw material, does not also have
There is any technology to disclose the raw mineral materials raw material for preparing alumina silicate fibre.Inventor creatively has found that raw mineral materials is given birth to
Material is used directly for preparing alumina silicate fibre, without the process of mature calcined material, and the alumina silicate fibre tool for preparing
There are good insulation, heat-insulating property, can use at different temperatures, disclosure satisfy that the major part such as electric power, petrochemical industry, metallurgy field
The need for adiabatic heat-insulation.The present invention is not particularly limited to described raw mineral materials raw material, and chemical composition meets raw mineral materials life
Al in material2O3And SiO2Weight/mass percentage composition sum be more than 95%.Raw mineral materials raw material of the present invention are preferably selected from kaolinite
One kind or several in rock, diaspore, illite, pyrophillite, alumine, kyanite, sillimanite, andalusite and quartz sand
Kind.Specifically, Raolinite, diaspore, illite, pyrophillite, alumine, kyanite, sillimanite and red post can be selected from
One or more in stone；Can also be Raolinite, diaspore, illite, pyrophillite, alumine, kyanite, sillimanite
With the mixture of one or more in andalusite and quartz sand.
The present invention above-mentioned raw mineral materials raw material are not particularly limited, chemical composition composition meet, can on ore classification
It is preferably commercially available to be attributed to above-mentioned raw mineral materials raw material.
The present invention directly directly prepares alumina silicate fibre with raw material, without maturing process such as calcinings.
Raolinite, also known as kaolin, china clay, carclazyte, white clay, potter's clay etc., with Al2O3And SiO2It is main component.Hard water
The English of aluminium stone is Diaspore, and chemical formula is 59.99gm for AlOOH molecular weight.Crystal belongs to orthogonal (tiltedly side) crystallographic system and crystallizes
Into the silicate hydroxide minerals of α phases.With crystallize into the boehmite of γ phases into polymorphic form.Diaspore is the oxide ore of aluminium
It is thing, generally white, grey, colourless, can be in the color such as red, brown when impure.It is hard with glassy lustre.It is distributed widely in
In bauxite and laterite and some rocks.Can be used as refractory material, it is also possible to refine aluminium.Illite is a kind of common clay
Ore deposit thing ﹐ Chang Youbai clouds mother's ﹑ potassium feldspars weathering and into ﹐ and originate in argillaceous rocks ﹐ or formed by other mineral alterations.It is often formed
The middle transition mineral of other clay minerals.Desirable chemical composition is K0.75(Al1.75R)【Si3.5Al0.5O10】(OH)2, crystal
The aqueous layer silicate mineral of main category monoclinic system.R represents divalent metal, predominantly Mg, Fe etc. in formula.
Crystal structure is essentially identical with muscovite, falls within 2:The dioctahedron type of 1 type construction unit layer.Crystal has 1M, 2M, 1Md
With many types of variant such as 3T.Pyrophillite is one kind of clay mineral, and category crystalline texture is 2：The layered hydrous manosil AS salt mine of 1 type
Thing.Chemical structural formula is Al2【Si4O10】 (OH)2.Pyrophillite quality is fine and smooth, and hardness is low (1-2).Alumine, abbreviation high alumina
Material.The essential mineral of high aluminium material is diaspore and high alumina silica composition.Diaspore content is with alundum (Al2O3) and silica
Ratio raising and increase.Kyanite, also known as two admants, belong to silicates mineral, are that a kind of refractoriness is high, high volume is swollen
The natural refractory raw material mineral for swelling.Kyanite is anorthic system, generally in the column crystal of flat, there is parallel strip on crystal face
Line.Color is in light blue or cyan, bright greyish white etc..Hardness is 5.5-7.0, proportion:3.53-3.65.The crystal knot of sillimanite
In structure,【SiO4】With【AlO4】Two kinds of tetrahedrons are alternately arranged along Z axis, constitute aluminosilicate【AlSiO5】Double-strand.Andalusite chemistry
It is Al to constitute2[SiO5] O, crystal belong to the nesosilicate mineral of orthogonal (tiltedly side) crystallographic system.Quartz sand is a kind of nonmetallic ore
Material, refers to containing the more river sand of silica, sea sand, Weathered Sand etc., is a kind of hard, wear-resisting, stable chemical performance silicic acid
Salt mineral, its main mineral constituent is SiO2。
The present invention crushes raw mineral materials raw material, and the degree of crushing can directly affect product.In the present invention, the grain of crushing
Footpath is preferably 1~20mm, more preferably 1~10mm.
Raw material after crushing is melted.The present invention is preferably melted in resistance furnace or electric arc furnaces to the raw material,
The temperature of the melting is preferably 1500 DEG C~2400 DEG C, more preferably 1650 DEG C~2200 DEG C.
After obtaining fused solution, fine treatment is carried out into the fused solution, you can obtain alumina silicate fibre.In the present invention,
It is described to be processed or centrifugal drying silk for injection into fibre treatment.The present invention is to the injection treatment or centrifugal drying silk without any limit
System, can obtain alumina silicate fibre.
It is divided into plain edition, standard type, high-purity type and several classes of aluminium profiles high according to national standard alumina silicate fibre.Different type
Temperature in use is different.
In the present invention, it is preferred to, Al in the raw mineral materials raw material2O3Weight/mass percentage composition be q, the 0% ＜ q
≤ 45%, Al2O3And SiO2Weight/mass percentage composition sum be more than 95%.
By above-mentioned raw mineral materials raw material crush, melting, into fibre treatment after obtain alumina silicate fibre；In this raw mineral materials raw material
Species, crushing, melting, into fine treatment technique it is equal and it is above-mentioned refer to identical, will not be repeated here.Meet above-mentioned percentage composition
The alumina silicate fibre of preparation is plain edition alumina silicate fibre, reaches the standard of the plain edition alumina silicate fibre of national regulation, and it makes
With temperature within 1000 DEG C.
In the present invention, it is preferred to, Al in the raw mineral materials raw material2O3Weight/mass percentage composition be m, the 45% ＜ m
＜ 48%, Al2O3And SiO2Weight/mass percentage composition sum be more than 96%.
By above-mentioned raw mineral materials raw material crush, melting, into fibre treatment after obtain alumina silicate fibre；In this raw mineral materials raw material
Species, crushing, melting, into fine treatment technique it is equal and it is above-mentioned refer to identical, will not be repeated here.Meet above-mentioned percentage composition
The alumina silicate fibre of preparation is standard type alumina silicate fibre, reaches the standard of state specified standards type alumina silicate fibre, and it makes
With temperature within 1200 DEG C.
In the present invention, it is preferred to, Al in the raw mineral materials raw material2O3Weight/mass percentage composition be n, the 48%≤n
＜ 53%, Al2O3And SiO2Weight/mass percentage composition sum be more than 98%.
By above-mentioned raw mineral materials raw material crush, melting, into fibre treatment after obtain alumina silicate fibre；In this raw mineral materials raw material
Species, crushing, melting, into fine treatment technique it is equal and it is above-mentioned refer to identical, will not be repeated here.Meet above-mentioned percentage composition
The alumina silicate fibre of preparation is the standard of high-purity type alumina silicate fibre that high-purity type alumina silicate fibre reaches national regulation, and it is used
Temperature is within 1250 DEG C.
In the present invention, it is preferred to, Al in the raw mineral materials raw material2O3Weight/mass percentage composition be more than 53%,
Al2O3And SiO2Weight/mass percentage composition sum be more than 99%.
By above-mentioned raw mineral materials raw material crush, melting, into fibre treatment after obtain alumina silicate fibre；In this raw mineral materials raw material
Species, crushing, melting, into fine treatment technique it is equal and it is above-mentioned refer to identical, will not be repeated here.Meet above-mentioned percentage composition
The alumina silicate fibre of preparation is aluminium profiles alumina silicate fibre high, reaches the standard of the aluminium profiles alumina silicate fibre high of national regulation, and it makes
With temperature within 1350 DEG C.
The invention provides a kind of alumina silicate fibre, the preparation method as described in the claims any one is prepared into
Arrive.
The invention provides a kind of aluminum silicate fibre product, including the alumina silicate fibre described in the claims.This hair
The bright aluminum silicate fibre product includes but is not limited to the alumina silicate fibre systems such as blanket, felted, tabular, chunk, textile and paper
Product.
The invention provides a kind of preparation method of aluminum silicate fibre product, including described in the claims any one
Preparation method.
The diameter of the alumina silicate fibre that the present invention is provided is preferably 1 μm~15 μm, and fibre length is preferably 5mm~100mm,
Shot content is preferably shorter than 30%.
The alumina silicate fibre that the present invention is provided has the low advantage of light weight, thermal conductivity factor, is a kind of new energy-saving material.
The invention provides a kind of preparation method of alumina silicate fibre, comprise the following steps：Raw mineral materials raw material are crushed,
Melting, into fibre treatment after obtain alumina silicate fibre；Al in the raw mineral materials raw material2O3And SiO2Weight/mass percentage composition sum
It is more than 95%.The creative use raw mineral materials raw material of the present inventor directly prepare alumina silicate fibre, and not only process is simple, keeps away
Exempted from calcination operation, and the alumina silicate fibre for preparing has good insulation, heat-insulating property, can meet electric power, petrochemical industry,
The adiabatic heat-insulation in the major part such as metallurgy field needs.
In order to further illustrate the present invention, the alumina silicate fibre to present invention offer and its preparation side with reference to embodiment
Method is described, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
It is by mass percent composition：Al2O327.5%th, Al2O3+SiO295.5%, other composition mass percent total amounts<
10% diaspore raw material crushing to granularity is 20mm, is added in resistance furnace, is melted at 2000 DEG C；High temperature solution passes through
High speed centrifugation device gets rid of silk into plain edition cellucotton, and cellucotton chemical index is：Al2O331.2%th, Al2O3+SiO296.7%th, its
Its composition mass percent total amount<10%.A diameter of 1 μm~15 μm of cellucotton, fibre length is 5mm~100mm, shot content
It is 26%.
Embodiment 2
It is by mass percent composition：Al2O342.5%th, Al2O3+SiO295.0%, other composition mass percent total amounts<
10% illite raw material crushing to granularity is 15mm, is added in resistance furnace, is melted at 2000 DEG C, and high temperature solution is by spray
Blowing apparatus are made plain edition cellucotton, and cellucotton chemical index is：Al2O343.5%th, Al2O3+SiO295.9%th, other composition matter
Amount percentage total amount<10%.1 μm~10 μm of fibre diameter, fibre length 5mm~60mm, shot content 24%.
Embodiment 3
It is by mass percent composition：Al2O341.5%th, Al2O3+SiO295.5%, other composition mass percent total amounts<
10% pyrophillite raw material crushing to granularity is 10mm, is added in electric arc furnaces, is melted at 2000 DEG C, and high temperature solution is by spray
Blowing apparatus are made plain edition cellucotton, and cellucotton chemical index is：Al2O343.5%th, Al2O3+SiO295.8%th, other composition matter
Amount percentage total amount<10%.1 μm~10 μm of fibre diameter, fibre length 5mm~30mm, shot content 20%.
Embodiment 4
It is by mass percent composition：Al2O345.5%th, Al2O3+SiO296.8%, other composition mass percent total amounts<
10% Raolinite raw material crushing to granularity is 10mm, is added in resistance furnace, is melted at 2100 DEG C, and high temperature solution is by height
Fast centrifugal device gets rid of silk into standard type cellucotton, and cellucotton chemical index is：Al2O346.5%th, Al2O3+SiO297.2%th, other
Composition mass percent total amount<10%.1 μm~15 μm of fibre diameter, fibre length 5mm~100mm, shot content 22%.
Embodiment 5
It is by mass percent composition：Al2O346.5%th, Al2O3+SiO297.0%, other composition mass percent total amounts<
10% alumine and quartz sand raw material crushing to granularity is 8mm, is added in resistance furnace, is melted at 2100 DEG C, high temperature
Liquation is made standard type cellucotton by blowing device, and cellucotton chemical index is：Al2O347.0%th, Al2O3+SiO298.0%th,
Other composition mass percent total amounts<10%.1 μm~10 μm of fibre diameter, fibre length 5mm~60mm, shot content 23%.
Embodiment 6
It is by mass percent composition：Al2O348.5%th, Al2O3+SiO298.3%, other composition mass percent total amounts<
10% Raolinite raw material crushing to granularity is 5mm, is added in electric arc furnaces, is melted at 2100 DEG C, and high temperature solution is by spray
Blowing apparatus are made high-purity fiber type cotton, and cellucotton chemical index is：Al2O348.9%th, Al2O3+SiO298.6%th, other composition matter
Amount percentage total amount<10%.1 μm~10 μm of fibre diameter, fibre length 5mm~30mm, shot content 26%.
Embodiment 7
It is by mass percent composition：Al2O350.0%th, Al2O3+SiO298.5%, other composition mass percent total amounts<
10% alumine is crushed to granularity for 7mm, is added in resistance furnace, is melted at 2200 DEG C, and high temperature solution is by a high speed
Centrifugal device gets rid of silk into high-purity fiber type cotton, and cellucotton chemical index is：Al2O351.0%th, Al2O3+SiO298.9%th, other into
Part mass percent total amount<10%.1 μm~15 μm of fibre diameter, fibre length 5mm~100mm, shot content 20%.
Embodiment 8
It is by mass percent composition：Al2O353.0%th, Al2O3+SiO299.0%, other composition mass percent total amounts<
10% kyanite raw material crushing to granularity is 10mm, is added in resistance furnace, is melted at 2200 DEG C, and high temperature solution is by spray
Blowing apparatus are made high alumina fiber type cotton, and cellucotton chemical index is：Al2O353.3%th, Al2O3+SiO299.4%th, other composition matter
Amount percentage total amount<10%.1 μm~10 μm of fibre diameter, fibre length 5mm~60mm, shot content 13%.
Embodiment 9
It is by mass percent composition：Al2O355.0%th, Al2O3+SiO299.3%, other composition mass percent total amounts<
10% sillimanite raw material crushing to granularity is 50mm, is added in electric arc furnaces, is melted at 2200 DEG C, and high temperature solution is by spray
Blowing apparatus are made high alumina fiber type cotton, and cellucotton chemical index is：Al2O355.6%th, Al2O3+SiO299.7%th, other composition matter
Amount percentage total amount<10%.1 μm~10 μm of fibre diameter, fibre length 5mm~30mm, shot content 12%.
Embodiment 10
It is by mass percent composition：Al2O356.0%th, Al2O3+SiO299.3%, other composition mass percent total amounts<
10% andalusite raw material crushing to granularity is 50mm, is added in electric arc furnaces, is melted at 2200 DEG C, and high temperature solution is by spray
Blowing apparatus are made high alumina fiber type cotton, and cellucotton chemical index is：Al2O356.6%th, Al2O3+SiO299.7%th, other composition matter
Amount percentage total amount<10%.1 μm~10 μm of fibre diameter, fibre length 5mm~30mm, shot content 10%.
Embodiment 11
Cellucotton prepared by embodiment 1~10 is made tapetum fibrosum, its heating permanent line change is measured, as a result shown, it is real
The tapetum fibrosum that is made of cellucotton of the preparation of example 1~3 is applied at 1000 DEG C, its heating permanent line change (shrinkage factor) is 2.7%；It is real
The tapetum fibrosum that is made of cellucotton of the preparation of example 4~5 is applied at 1200 DEG C, its heating permanent line change (shrinkage factor) is 3.1%；It is real
The tapetum fibrosum that is made of cellucotton of the preparation of example 6~7 is applied at 1250 DEG C, its heating permanent line change (shrinkage factor) is 3.8%；It is real
The tapetum fibrosum that is made of cellucotton of the preparation of example 8~10 is applied at 1350 DEG C, its heating permanent line change (shrinkage factor) is 3.7%.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of preparation method of alumina silicate fibre, comprises the following steps：
By raw mineral materials raw material crush, melting, into fibre treatment after obtain alumina silicate fibre；
The raw mineral materials raw material be selected from Raolinite, diaspore, illite, pyrophillite, alumine, kyanite, sillimanite,
One or more in andalusite and quartz sand；
Al in the raw mineral materials raw material2O3And SiO2Weight/mass percentage composition sum be more than 95%.
2. preparation method according to claim 1, it is characterised in that Al in the raw mineral materials raw material2O3Quality percentage
Content is q, 0% ＜ q≤45%, Al2O3And SiO2Weight/mass percentage composition sum be more than 95%.
3. preparation method according to claim 1, it is characterised in that Al in the raw mineral materials raw material2O3Quality percentage
Content is m, the 45% ＜ m ＜ 48%, Al2O3And SiO2Weight/mass percentage composition sum be more than 96%.
4. preparation method according to claim 1, it is characterised in that Al in the raw mineral materials raw material2O3Quality percentage
Content is n, 48%≤n ＜ 53%, Al2O3And SiO2Weight/mass percentage composition sum be more than 98%.
5. preparation method according to claim 1, it is characterised in that Al in the raw mineral materials raw material2O3Quality percentage
Content is more than 53%, Al2O3And SiO2Weight/mass percentage composition sum be more than 99%.
6. the preparation method according to claim 1-5 any one, it is characterised in that the particle diameter of the crushing is 1~
20mm。
7. a kind of alumina silicate fibre, it is characterised in that the preparation method as described in claim 1-6 any one is prepared.
8. a kind of aluminum silicate fibre product, it is characterised in that including the alumina silicate fibre described in claim 7.
9. a kind of preparation method of aluminum silicate fibre product, it is characterised in that including the system described in claim 1-6 any one
Preparation Method.
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| US4622307A (en) * | 1985-05-29 | 1986-11-11 | Manville Corporation | Low shrinkage kaolin refractory fiber and method for making same |
| CN1051338A (en) * | 1989-11-02 | 1991-05-15 | 湖南省新化县电子器件厂 | Direct method with clay pit system aluminum silicate fiber |
| EP0973697B1 (en) * | 1997-05-13 | 2000-07-19 | Robin Richter | Al2o3-containing, high-temperature resistant glass sliver with highly textile character, and products thereof |
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