CN106396639A - Production method of surface dyed magnesium-aluminum-zirconium composite fireproof fiber felt - Google Patents
Production method of surface dyed magnesium-aluminum-zirconium composite fireproof fiber felt Download PDFInfo
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- CN106396639A CN106396639A CN201610753203.7A CN201610753203A CN106396639A CN 106396639 A CN106396639 A CN 106396639A CN 201610753203 A CN201610753203 A CN 201610753203A CN 106396639 A CN106396639 A CN 106396639A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62227—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres
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- 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
- C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
- D04H1/485—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with weld-bonding
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- 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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
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- 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
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Abstract
The invention discloses a production method of a surface dyed magnesium-aluminum-zirconium composite fireproof fiber felt. The surface dyed magnesium-aluminum-zirconium composite fireproof fiber felt comprises, by mass, 60-85% of MgO, 5-25% of Al2O3, 5-10% of ZrO2, 1-5% of Y2O3, 1-5% of SrO and 1-5% of TiO2. Magnesia, magnesium aluminate spinel, zircon, xenotime, strontianite and titanium dioxide are adopted as raw materials, coloring agent powder is adhered, molten and dispersed in a spinning solution outer layer under the assistance of hot air in the centrifuge thread throwing process, surface dyed magnesium-aluminum-zirconium composite fireproof fibers are produced with the solidification of a spinning solution, and the surface dyed magnesium-aluminum-zirconium composite fireproof fiber felt is produced through needling and pressurizing heat shaping. The surface dyed magnesium-aluminum-zirconium composite fireproof fibers produced in the invention have the characteristics of uniform dyeing, high color fastness, few structure defects and low linear shrinkage.
Description
Technical field
The invention belongs to refractory fibre field, especially relate to a kind of system of padding magnesium-aluminum-zirconium composite fire fiber felt
Preparation Method.
Background technology
Compared with other refractory materials, refractory fibre has density little the 1/5～1/10 of refractory brick (only), heat conductivity
Little (for the 1/3 of light-weight brick), the features such as thermal capacitance is little, programming rate is fast, in metallurgy, machinery, oil, chemical industry, electronics and light industry
It is widely used etc. in various industrial circles.
Refractory fibre is used for replacing refractory brick to be used for the high-temperature field such as heat-treatment furnace, heating furnace, but from 20th century 90
Since age, with exploitation and the popularization of new product, refractory material has also progressed in daily life.Patent CN1229864A is public
Open a kind of non-inflammability blend yarn and its application, aluminum silicate ceramic refractory fibre has been carried out with glass fibre or high silica fiber
Blending is simultaneously weaved and is obtained fabric, and gained fabric has good noninflammability.Patent CN1253645C discloses a kind of fire resisting shutter,
With refractory fiber blanket for curtain core, the fire prevention to large-scale public place, storehouse plays an important role.Application with fire proofing firbre
Increasingly extensive, its attached performance and outward appearance also receive higher requirement.At present, refractory fibre mostly is industrial application, to its table
See color and have no excessive requirement, show as netrual colour more.But in daily life, people are to refractory fibre apparent colour then
Can have pursuance.At present, chromatic colour fire proofing firbre product is still extremely to be short of.Magnesium-aluminum-zirconium composite fire fiber is a kind of inorganic fibre
Dimension, traditional organic dye method is difficult to it is dyeed, and not yet has relevant report with regard to its colouring method.
Content of the invention
For overcoming the problem of dyeing magnesium-aluminum-zirconium composite fire fiber producing processes shortcoming, the present invention provides a kind of padding
The preparation method of magnesium-aluminum-zirconium composite fire fiber felt.
The present invention is realized by following technology：
A kind of preparation method of padding magnesium-aluminum-zirconium composite fire fiber felt, step is as follows：
1) main material prepares：According to MgO, Al2O3, ZrO2, Y2O3, SrO and TiO2Quality proportioning to weigh magnesia, magnalium point brilliant
Stone, zircon, xenotime, strontianite and titanium dioxide, are blended and carry out pulverizing and obtain main material；
2) stain powder prepares：Using mechanical ball milling instrument, stain is milled to 400～600 mesh and obtains stain powder；
3) melt：Main material is put in melting furnace and is heated to 2100～2300 DEG C, until melt obtaining fused solution completely；
4) filter：Filter the impurity in fused solution, filtrate flows in 2300～2500 DEG C of stirred tank and carries out continuously stirred
To spinning liquid；
5) refractory fibre is collected：Spinning liquid flows out from stirred tank discharging opening, enters spinning head, under the action of the centrifugal force, through centrifugation
The pore of head throws away, and the injection of pore vertical direction carries the industrial nitrogen of stain powder, under industrial nitrogen auxiliary, dyeing
Agent powder adheres to and is melted in spinning liquid surface, and meanwhile, spinning liquid is quickly cooled to solid fiber and is collected by condensers
Obtain padding magnesium-aluminum-zirconium composite fire fiber；
6) become felt：Padding magnesium-aluminum-zirconium composite fire fiber input opening picking device is carried out shredding, combing obtains distribution all
Even fleece, carries out acupuncture using needing machine to fleece and obtains fire-retardent fiber felt-rug fabric, fire-retardent fiber felt-rug fabric is carried out
Stage by stage pressurization thermal finalization, cut and collect and obtain padding magnesium-aluminum-zirconium composite fire fiber felt.
The powder particle diameter of traditional refractory fibre raw material modifying agent is 50～200 mesh, and the present invention adopts 400～600 purposes
Stain powder.Although increased disintegrating process difficulty, experiments verify that, stain powder used in the present invention can obtain
The distribution being more uniformly distributed on refractory fibre, in conjunction with more firm, dyeing is more uniformly distributed, and dyefastness is higher.
The selection of melt temperature comes from the different compositions of raw material, and in this manual, inventor tests preferably through continuous
2100～2300 DEG C of melt temperatures as padding magnesium-aluminum-zirconium composite fire fiber felt raw material, particularly preferred temperature is true
Rule depends on the different compositions of raw material and the particle diameter pulverized.
Under centrifugal force, the pore through spinning head throws away spinning liquid, and now spinning liquid temp is higher, and main body is still liquid,
Under industrial nitrogen auxiliary, stain adheres to spinning liquid surface and melts to rapidly the outer layer of spinning liquid, meanwhile, industry
Nitrogen also serves the effect of cooling and solidifying to spinning liquid, and the solidification of spinning liquid also achieves stain powder in refractory fibre table
The set in face, thus realizing the coloring of magnesium-aluminum-zirconium composite fire fiber surface, this is a most important invention in this specification
Point.After tested, stain powder is uniform in refractory fibre surface distributed.In addition, conventional centrifugal gets rid of silk uses air as cooling
Solid gas, is to avoid coloring agent oxidation at high temperature according to reason using industrial nitrogen in this manual, thus
Improve the color and luster of gained padding refractory fibre product.As for padding magnesium-aluminum-zirconium composite fire fiber dye level then
Together decided on by the concentration of stain powder in stain itself, industrial nitrogen and the air velocity of industrial nitrogen.
Preferably, the quality proportioning of main material is MgO 60%～85%, Al2O35%～25%, ZrO25%～
10%, Y2O31%～5%, SrO 1%～5%, TiO21%～5%, total amount is 100%.
Preferably, described stain is iron sesquioxide, copper oxide, ferroso-ferric oxide, ferrous oxide, Red copper oxide, oxygen
Change one or more of cobalt, vanadic anhydride and chromic oxide.
Realize absorption on refractory fibre for the stain, set in the fiber solidifying formative stage of magnesium-aluminum-zirconium composite fire and divide
Dissipate, be more uniformly distributed thus one kind being obtained there is dyeing, the high magnesium-aluminum-zirconium composite fire fiber of dyefastness is of the present invention
Important inventive point.Through the present inventor practice have shown that, do not use that the magnesium-aluminum-zirconium composite fire fiber prepared by stain presents is
A kind of light grey, and then can show dyeing using the magnesium-aluminum-zirconium composite fire fiber obtained by the padding method of the present invention
The true qualities of agent.Wherein iron sesquioxide, the use of vanadic anhydride can obtain yellow refractory fibre, copper oxide, ferroso-ferric oxide, oxygen
The use changing cobalt can obtain black refractory fibre, and the use of Red copper oxide can obtain red refractory fibre, ferrous oxide, chromic oxide
Use can obtain green refractory fibre.The present invention realizes the coloring to refractory fibrous material first, and this is for nothing in traditional sense
Colored refractory fibrous material is an important supplement, and the daily life fire prevention that is mainly used for of this chromatic colour refractory fibre is spun
Fabric.
Preferably, the particle diameter of described main material is 250～350 mesh.
The present invention adopts 250～350 mesh raw materials, and its reason is MgO, Al2O3、ZrO2It is all high-melting-point substances, adopt
Particle diameter less main material powder, can achieve melting rate faster, and main material mixing is more uniformly distributed, obtained refractory fibre
Quality more stable.
Preferably, centrifugal speed is 2～30,000 revs/min, and the aperture of pore is 0.1～0.4 millimeter.
Preferably, the temperature of described industrial nitrogen is 150～180 DEG C, and air velocity is 5～25 meter per seconds.
Preferably, in industrial nitrogen, the concentration of stain powder is 100～1000mg/L.
Preferably, a diameter of 25～50 microns of described padding magnesium-aluminum-zirconium composite fire fiber, length is 70～210
Millimeter.
European Union index KNB specifies that 0 class is to be not classified as carcinogen, and its average fibre diameter is more than 6 microns, and the present invention is in institute
Prepared fibre diameter be 25～50 microns, length be 70～210 millimeters, meet from size European Union's KNB index for regardless of
Class is carcinogenic requirement.
Preferably, needling density is 250～500 thorns/cm2, depth of needling be 9～13 millimeters.
It is to pierce pricker repeated localised puncture fleece using the buckle of needing machine that needle point method reinforces refractory fibre net, makes fiber middles
Horizontal refractory fibre is divided to form vertical fibers cluster, this fiber cluster, from top to bottom through fibre web, by being tangled with horizontal fibre, is hindered
The only mutual slippage of fiber, and make fibre structure closely, thickness is greatly reduced.In the technological parameter of needing machine needling density,
This two parameters of depth of needling are mostly important.Refractory fibrous material is fragile material, easily snaps off, in traditional refractory fibre pin
Pierce in the technique of felt, the needling density of less clear and definite acupuncture and depth of needling, the strength of fire-retardent fiber felt-rug is not had substantially
Concern.Its reason is perhaps that traditional refractory fibre is used for heat-treatment furnace, the industrial heat preservation material of heating furnace uses, by force
Power requires less.But in daily life, felt product are inevitably acted on by stretching, bending repeatedly, the stretching of felt product
Ultimate strength, fatigue performance then need to receive publicity.But inventor's experiment finds, this two technological parameters are to refractory fibre
The tension failure strength of felt, fatigue performance have significant impact, are related to its use, and preferred needling density is 300
～400 thorns/cm2, when depth of needling is 10～12 millimeters, the tension failure strength of gained fire-retardent fiber felt-rug can obtain higher value,
Fatigue performance is preferable.
Preferably, the described thermal finalization of pressurization stage by stage is pressure 5～8Kg/cm in 600～800 DEG C of temperature2Under the conditions of locate
Reason 30～60 minutes, is then warming up to 1400～1600 DEG C with 10～30 DEG C/minute, pressure 3～5Kg/cm2Under the conditions of process 1～3
Minute, it is disposed, naturally cool to room temperature.
A conventionally employed acupuncture obtains refractory fibre finished product, in the present invention, the base that inventor shapes for acupuncture
Cloth carries out pressurized heat heat treatment twice, its role is to, and the pressurization thermal finalization of long period first time advantageously forms crystal grain
Tiny, intensity is higher, the preferable refractory fibre of toughness, and the pressurized heat heat treatment of second short time can make refractory fibre exist
Densified structure is obtained, crystal grain is not susceptible to secondary growth, makes fiber more stable in applied at elevated temperature performance in short time, this
Step keeps stable for the refractory fibre size using at high temperature, and the padding magnesium-aluminum-zirconium composite fire obtaining lower shrinkage is fine
Dimension felt has vital effect, and this is also one of one important inventive point of this specification.
The beneficial effects of the present invention is：(1) realize stain in refractory fibre using the refractory fibre curing molding stage
On absorption, dispersion and set, prepare the high padding magnesium-aluminum-zirconium composite fire fiber of a kind of even dyeing, color fastness；(2)
Gained refractory fibre fault of construction is few, has relatively low linear shrinkage ratio.
Brief description
Fig. 1 is the structural representation of the embodiment of the present invention.
Specific embodiment
Embodiment 1
Take title magnesia 50.4wt%, magnesium aluminate spinel 21.5wt%, zircon 11.3wt%, xenotime 6.5wt%, strontianite
6.3wt% and titanium dioxide 4.0wt%, its chemical composition is MgO 60.9wt%, Al2O317.0wt%, ZrO28.4wt%,
Y2O34.4wt%, SrO 4.9wt%, TiO24.4wt%, is blended and is crushed to 250 mesh and obtain main material powder.Using machinery
Red copper oxide is milled to 400 mesh and obtains cuprous oxide powder by ball milling instrument.Main material powder is put in melting furnace and is heated to
2100 DEG C, until melt obtaining fused solution completely.Subsequently filter the impurity in fused solution, filtrate flows into 2300 DEG C of stirred tank simultaneously
Carry out continuously stirred obtain spinning liquid, this spinning liquid flows out into spinning head from the discharging opening of stirred tank, in centrifugal action
Under (20,000 revs/min), the pore (a diameter of 0.2 millimeter) through spinning head throws away, and the injection of pore vertical direction carries Red copper oxide
The industrial nitrogen of powder, the concentration of cuprous oxide powder is 500mg/L, and the temperature of industrial nitrogen is 150 DEG C, speed is 10 meters/
Second.Under industrial nitrogen auxiliary, cuprous oxide powder adheres to spinning liquid surface (as shown in Figure 1) and melts, disperses, meanwhile,
Spinning liquid is quickly cooled to solid fiber and is collected obtaining padding magnesium-aluminum-zirconium composite fire fiber by condensers.Should
Refractory fibre puts into opening picking device to carry out shredding, combing and obtains the fleece being evenly distributed, using needing machine to fleece
Carry out acupuncture, needling density is 300 thorns/cm2, depth of needling be 11 millimeters, obtain padding magnesium-aluminum-zirconium composite fire fiber
Felt blanket cloth.Subsequently, this fabric is pressurizeed stage by stage thermal finalization, with 600 DEG C of temperature, pressure 5Kg/cm2After processing 30 minutes,
It is warming up to 1400 DEG C with 10 DEG C/minute, apply pressure 3Kg/cm2, process 1 minute.Pressurization thermal finalization finishes, and naturally cools to room
Temperature, cuts and collects and obtain padding magnesium-aluminum-zirconium composite fire fiber felt.
The average diameter producing gained padding magnesium-aluminum-zirconium composite fire fiber is 38 microns, and average length is 106 millis
Rice, extracts padding magnesium-aluminum-zirconium composite fire fiber and keeps 20 minutes at 800 DEG C, and recording its linear shrinkage ratio is 1.8%.
Using Datacolor SF600X colour photometer, colour examining is carried out to padding magnesium-aluminum-zirconium composite fire fiber felt, its color
Degree index is L*51.6, a*43.8, b*12.9, from chromaticity index, the present embodiment gained padding magnesium-aluminum-zirconium composite fire
The color of fiber felt is redness.
Embodiment 2
Take title magnesia 75.3wt%, magnesium aluminate spinel 10.5wt%, zircon 7.2wt%, xenotime 2.6wt%, strontianite
2.3wt% and titanium dioxide 2.1wt%, its chemical composition is MgO 81.2wt%, Al2O38.0wt%, ZrO25.1wt%, Y2O3
1.7wt%, SrO 1.7wt%, TiO22.2wt%, is blended and is crushed to 350 mesh and obtain main material powder.Using mechanical ball milling
Ferrous oxide is milled to 600 mesh and obtains ferrous oxide powder by instrument.Main material powder is put in melting furnace and is heated to 2200 DEG C,
Until melt obtaining fused solution completely.Subsequently filter the impurity in fused solution, filtrate flows in 2400 DEG C of stirred tank and carries out
Continuously stirred obtain spinning liquid, this spinning liquid flows out into spinning head from the discharging opening of stirred tank, under the action of the centrifugal force (3
Ten thousand revs/min), the pore (a diameter of 0.3 millimeter) through spinning head throws away, and the injection of pore vertical direction carries ferrous oxide powder
Industrial nitrogen, the concentration of ferrous oxide powder is 800mg/L, and the temperature of industrial nitrogen is 170 DEG C, and speed is 5 meter per seconds.?
Under industrial nitrogen auxiliary, ferrous oxide powder adheres to spinning liquid surface (as shown in Figure 1) and melts, disperses, meanwhile, spinning liquid
Quickly it is cooled to solid fiber and be collected obtaining padding magnesium-aluminum-zirconium composite fire fiber by condensers.This fire resisting is fine
Dimension puts into opening picking device and carries out shredding, combing and obtain the fleece being evenly distributed, and enters the hand-manipulating of needle using needing machine to fleece
Thorn, needling density is 400 thorns/cm2, depth of needling be 12 millimeters, obtain padding magnesium-aluminum-zirconium composite fire fiber felt fabric.
Subsequently, this fabric is pressurizeed stage by stage thermal finalization, with 700 DEG C of temperature, pressure 8Kg/cm2After process time 40 minutes, with
20 DEG C/minute are warming up to 1500 DEG C, apply pressure 5Kg/cm2, after processing 2 minutes.Pressurized heat heat treatment finishes, and naturally cools to
Room temperature, cuts and collects and obtain padding magnesium-aluminum-zirconium composite fire fiber felt.
The average diameter producing gained padding magnesium-aluminum-zirconium composite fire fiber is 43 microns, and average length is 167 millis
Rice, extracts padding magnesium-aluminum-zirconium composite fire fiber and keeps 20 minutes at 800 DEG C, and recording its linear shrinkage ratio is 1.2%.
Using Datacolor SF600X colour photometer, colour examining is carried out to padding magnesium-aluminum-zirconium composite fire fiber felt, its color
Degree index is L*38.3, a*- 53.6, b*7.8, from chromaticity index, the present embodiment gained padding magnesium-aluminum-zirconium composite fire
The color of fiber felt is green.
Claims (10)
1. a kind of preparation method of padding magnesium-aluminum-zirconium composite fire fiber felt, is characterized in that, step is as follows：
1) main material prepares：According to MgO, Al2O3, ZrO2, Y2O3, SrO and TiO2Quality proportioning to weigh magnesia, magnalium point brilliant
Stone, zircon, xenotime, strontianite and titanium dioxide, are blended and carry out pulverizing and obtain main material；
2) stain powder prepares：Using mechanical ball milling instrument, stain is milled to 400～600 mesh and obtains stain powder；
3) melt：Main material is put in melting furnace and is heated to 2100～2300 DEG C, until melt obtaining fused solution completely；
4) filter：Filter the impurity in fused solution, filtrate flows in 2300～2500 DEG C of stirred tank and carries out continuously stirred
To spinning liquid；
5) refractory fibre is collected：Spinning liquid flows out from stirred tank discharging opening, enters spinning head, under the action of the centrifugal force, through centrifugation
The pore of head throws away, and the injection of pore vertical direction carries the industrial nitrogen of stain powder, under industrial nitrogen auxiliary, dyeing
Agent powder adheres to and is melted in spinning liquid surface, and meanwhile, spinning liquid is quickly cooled to solid fiber and is collected by condensers
Obtain padding magnesium-aluminum-zirconium composite fire fiber；
6) become felt：Padding magnesium-aluminum-zirconium composite fire fiber input opening picking device is carried out shredding, combing obtains distribution all
Even fleece, carries out acupuncture using needing machine to fleece and obtains fire-retardent fiber felt-rug fabric, fire-retardent fiber felt-rug fabric is carried out
Stage by stage pressurization thermal finalization, cut and collect and obtain padding magnesium-aluminum-zirconium composite fire fiber felt.
2. a kind of preparation method of padding magnesium-aluminum-zirconium composite fire fiber felt according to claim 1, is characterized in that,
The quality proportioning of main material is MgO60%～85%, Al2O35%～25%, ZrO25%～10%, Y2O31%～5%,
SrO1%～5%, TiO21%～5%, total amount is 100%.
3. a kind of preparation method of padding magnesium-aluminum-zirconium composite fire fiber felt according to claim 1, is characterized in that,
Described stain is iron sesquioxide, copper oxide, ferroso-ferric oxide, ferrous oxide, Red copper oxide, cobalt oxide, vanadic anhydride
One or more of with chromic oxide.
4. a kind of preparation method of padding magnesium-aluminum-zirconium composite fire fiber felt according to claim 1, is characterized in that,
The particle diameter of described main material is 250～350 mesh.
5. a kind of preparation method of padding magnesium-aluminum-zirconium composite fire fiber felt according to claim 1, is characterized in that,
Centrifugal speed is 2～30,000 revs/min, and the aperture of pore is 0.1～0.4 millimeter.
6. a kind of preparation method of padding magnesium-aluminum-zirconium composite fire fiber felt according to claim 1, is characterized in that,
The temperature of described industrial nitrogen is 150～180 DEG C, and air velocity is 5～25 meter per seconds.
7. the preparation method of a kind of padding magnesium-aluminum-zirconium composite fire fiber felt according to claim 1 or 3, its feature
It is that in industrial nitrogen, the concentration of stain powder is 100～1000mg/L.
8. a kind of preparation method of padding magnesium-aluminum-zirconium composite fire fiber felt according to claim 1, is characterized in that,
A diameter of 25～50 microns of described padding magnesium-aluminum-zirconium composite fire fiber, length is 70～210 millimeters.
9. a kind of preparation method of padding magnesium-aluminum-zirconium composite fire fiber felt according to claim 1, is characterized in that,
Needling density is 250～500 thorns/cm2, depth of needling be 9～13 millimeters.
10. the preparation method of a kind of padding magnesium-aluminum-zirconium composite fire fiber felt according to claim 1, its feature
It is that the described thermal finalization of pressurization stage by stage is pressure 5～8Kg/cm in 600～800 DEG C of temperature2Under the conditions of process 30～60 minutes,
Then it is warming up to 1400～1600 DEG C with 10～30 DEG C/minute, pressure 3～5Kg/cm2Under the conditions of process 1～3 minute, processed
Finish, naturally cool to room temperature.
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Address after: 313100 Meishan Town Industrial Park, Changxing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang ally Refractories Co.,Ltd. Address before: 313117 Industrial Park, Changxing County Town, Changxing County, Huzhou Patentee before: CHANGXING MENGYOU REFRACTORIES Co.,Ltd. |