CN103820881A - Method for preparing ceramic fibers from high-aluminum fly ash - Google Patents

Method for preparing ceramic fibers from high-aluminum fly ash Download PDF

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CN103820881A
CN103820881A CN201410046021.7A CN201410046021A CN103820881A CN 103820881 A CN103820881 A CN 103820881A CN 201410046021 A CN201410046021 A CN 201410046021A CN 103820881 A CN103820881 A CN 103820881A
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deironing
carbon
ash
batching
fusion tank
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CN103820881B (en
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张作泰
王习东
刘丽丽
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Peking University
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Peking University
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Abstract

The invention relates to a method for preparing ceramic fibers from high-aluminum fly ash. The method comprises the steps of A, batching; B, palletizing; C, melting and iron and carbon removal; D, fiber formation. According to the method, the ceramic fibers with high performance and uniform diameter distribution are obtained by selecting proper raw materials and a proper proportion and controlling process parameters of each step; each fiber product prepared from the ceramic fibers obtained by the method is detected to have high performance and broad application prospect and huge industrial potential in the fields of energy saving, emission reduction and environmental waste recycling and fully meet a plurality of application index requirements on heat resistance, fire retardance, moisture resistance and the like.

Description

A kind of method of utilizing aluminous fly-ash to prepare ceramic fibre
Technical field
The present invention relates to a kind of twice laid method of coal burning residue, more specifically, the present invention relates to a kind of method of utilizing aluminous fly-ash to prepare ceramic fibre, belong to reprocessing utilization and the ceramic fibre production field of solid waste.
Background technology
Flyash is a kind of solid waste producing in coal-burning power plant's production process, and its output accounts for the 5-20% of coal-fired total amount, and therefore its generation is huge.
At present, approximately 500,000,000 tons of flyash annual emissions in the world, and China is because coal always for a long time is the main component part of energy sources, therefore all produces every year the flyash of enormous amount, China's flyash heap, high-volume more than 1,500,000,000 tons, stores up more than 40,000 hectare of an ash land occupation at present.
For a long time, the comprehensive utilization of flyash is all an important topic of field of environment protection, and till now, flyash has been widely used in building materials, build work, the field such as build the road, but not yet large-scale promotion of the utilization of high added value.
In different producing coal regions, the inorganic mineral and the content height that form coal are all different, thereby the flyash that has caused burning to produce is also different on component forms.Wherein, the CaO content in the flyash on the ground such as China's In North of Shanxi Province, Shaanxi Province and Inner Mongolia Autonomous Region is on the low side, belongs to low calcium ash, according to quality percentage composition meter, mainly by SiO 2(40-60%), Al 2o 3(30-50%), Fe 2o 3(2-10%), CaO (1-10%) and charcoal (1-2.6%) composition of combustion, also have in addition a small amount of MgO, Na 2o, K 2o, SO 3and the trace element such as arsenic, copper, zinc, wherein SiO 2, Al 2o 3, Fe 2o 3account for more than 90% with this sum of CaO, belong to aluminous fly-ash, these regional aluminous fly-ash year generations exceed 5,000 ten thousand tons, stack flyash and need hundreds of hectares of soils, not only serious environment pollution, and take a large amount of soils, the while embarrassment fact corresponding with huge output is that the comprehensive utilization ratio of these regional aluminous fly-ash is less than 30%, and be mainly the aspect such as steam-pressing brisk and building block very low in added value, and then cause that resource reutilization level is not high, economic benefit is poor.
Process the low of the scarcity of means and recycling degree just because of high added value, cause aluminous fly-ash mainly to save as master with heap, this not only severe contamination environment, also expended a large amount of land resource, become these areas and had to face and need one of the subject matter of solution and difficult problem badly.
To this, numerous researchers and manufacturer have carried out positive research, and have developed the multiple method of preparing various goods with flyash.
For example, CN1260336A discloses a kind of production technology of high-dosage flyash sintered brick; CN1065650A discloses a kind of formula of yellow or red soil and pulverized coal ash brick; CN1070177A discloses a kind of method with coal ash for manufacturing manufacturing ceramic facing bricks; CN1410386A discloses a kind of high-content fly ash Imitation Rock Porcelain Tiles and preparation method thereof; CN102701716A discloses a kind of fine coal grey matter Ceramic Tiles and preparation method thereof; CN101164962A discloses a kind of ceramic wall and floor bricks that utilizes flyash to prepare.
But up to now, not yet utilize coal ash for manufacturing for ceramic fibre, be especially applicable to the technology report in the building thermal insulation material field such as energy-conservation, heat insulation, fire-resistant.
Ceramic fibre material is the novel insulating energy-saving material of a kind of inorganic high-temperature resistant fibrous light, there is significantly feature such as (1 ton of energy-conservation heat energy that is equivalent to 200 tons of standard coals of ceramic fibre) of high temperature resistant, Heat stability is good, lightweight, energy-saving effect, and being widely used in industry, civilian and space flight military industry field, pottery dimension is replacing the refractory materials such as traditional asbestos friction material, refractory brick and calcium silicate board.Therefore,, under the present situation of China, the extensive use of ceramic fibre, is of great immediate significance and social effect to energy-saving and emission-reduction.
Further, prepare ceramic fibre with the flyash that China's output is huge, what one side can maximumly limit utilizes flyash, realizes its high value added utilization degree.On the other hand, the innovation item in resource, energy circulation and regeneration field especially, to improving waste utilization efficiency, making full use of the discarded energy, promote the economy and society of China, the harmonious development of man and nature, realize resources economy and there is extremely profound significance to jumping of recycling economy.All these, the basic place that all becomes research power of the present invention and be accomplished.
Summary of the invention
For current demand as above and technical development, the inventor, through a large amount of further investigations, is paying after sufficient creative work, has developed a kind of method of utilizing aluminous fly-ash to prepare ceramic fibre, thereby has completed the present invention.
Particularly, the present invention relates to a kind of method of utilizing aluminous fly-ash to prepare ceramic fibre, described method comprises the steps: A, batching; B, pelletizing; C, fusing, deironing de-carbon; D, fibroblast.
More specifically, the invention provides a kind of method of utilizing aluminous fly-ash to prepare ceramic fibre, described method comprises the steps:
A, batching
Take respectively aluminous fly-ash and bauxite, carry out proportioning according to certain component, then both are mixed, prepared burden;
B, pelletizing
Batching is carried out to pelletizing, obtain spherolite;
C, fusing, deironing de-carbon
By spherolite fusing, deironing de-carbon, obtain high-temperature fusion liquid;
D, fibroblast
High-temperature fusion liquid is blown to silk or gets rid of a fibroblast, obtain final products ceramic fibre.
Utilize in the method that aluminous fly-ash prepares ceramic fibre of the present invention, it is 43-50% that aluminous fly-ash in steps A and the proportioning of bauxite should make the quality of alumina content (being the alumina content sum in aluminous fly-ash and bauxite) in gained batching, for example, can be 43%, 45%, 47%, 49% or 50%.
Utilize in the method that aluminous fly-ash prepares ceramic fibre of the present invention, the quality of alumina percentage composition in steps A in aluminous fly-ash is 30-45%, for example, can be 30%, 35%, 40% or 45%.For example can be the aluminous fly-ash as shown in table 1 below from Shuozhou, shanxi Province chemical composition:
The chemical composition of table 1. aluminous fly-ash
Wherein: LOI is loss on ignition.
Utilize in the method that aluminous fly-ash prepares ceramic fibre of the present invention, in step B, batching is carried out to pelletizing, obtain spherolite.In the time of granulation, add organic binder bond, described organic binder bond is the 1-5% of batching quality, for example, be 1%, 2%, 3%, 4% or 5%.
Wherein, described organic binder bond is conventional binding agent conventional in granulation field, for example, be polyvinyl alcohol or other similar large molecular binder.
Wherein, the diameter of gained spherolite is 3-6cm, for example, be 3cm, 4cm, 5cm or 6cm.
This granulation operates the device using and is the conventional equipment in granulation field, and this is no longer going to repeat them.
Utilize in the method that aluminous fly-ash prepares ceramic fibre of the present invention, in step C, melt, when the operation of deironing de-carbon, use deironing carbon removing device, described deironing carbon removing device comprises fusion tank, described fusion tank open top, the bottom land of described fusion tank is obliquely installed, the medium position of described bottom land is provided with discharging opening, the extreme lower position of described bottom land is provided with the outlet of iron liquid, in described fusion tank, be provided with three for heating the melt electrode of material in described fusion tank, between three described melt electrodes, be mutually 60-120 ° of angle, for example can be 60 °, 80 °, 100 ° or 120 °.
Carbon mass content in gained fused solution after the deironing de-carbon operation of this step C is less than 0.1%, weight of iron content is less than 0.5%.If can not reach this content requirement, can repeat this step operation, until meeting These parameters, the carbon mass content in gained fused solution and weight of iron content requires (for example the fused solution after deironing de-carbon for the first time can be pulverized again, and then fusing, deironing de-carbon).
In described deironing carbon removing device, as a kind of optimal technical scheme, preferably between three described melt electrodes, be mutually 80 ° of angles or 120 ° of angles.
In described deironing carbon removing device, as a kind of optimal technical scheme, in described discharging opening, be provided with one and prevent the anti-condensation electrode that fused solution solidifies.
In described deironing carbon removing device, as a kind of optimal technical scheme, in described iron liquid outlet, be provided with one and prevent the anti-condensation electrode that iron liquid solidifies.
In described deironing carbon removing device, as a kind of optimal technical scheme, described fusion tank comprises interior cell body and outer cell body, between described interior cell body and outer cell body, is provided with cooling sandwith layer, described cooling sandwith layer connects cooling water source by pipeline, and described pipeline is provided with stop valve.
In described deironing carbon removing device, as a kind of optimal technical scheme, the aeration tube that is provided with some lateral arrangement and is made by ceramic material in described fusion tank, on described aeration tube, offer some passages, described aeration tube runs through described fusion tank and the sealing of described aeration tube one end, and the other end connects compressed air source.
Wherein, for a person skilled in the art, the quantity of aeration tube and quantity and passage can reasonably be determined according to operational requirements, molten mass can be carried out to suitable or maximum fully stirring.
In described deironing carbon removing device, as a kind of optimal technical scheme, described aeration tube is arranged near described bottom land, thereby has maximum aeration efficiency.
In described deironing apparatus, unless otherwise prescribed, from start to finish, term " fused solution " comprises aluminium oxide, silica after referring to spherolite fusing, has removed the liquid of iron oxide and residual carbon, remove this fused solution after impurity and flowed out from discharging opening, can be used in operation subsequently.And remaining carbon in original flyash and iron oxide react and generate gas and discharge in high-temperature heating, the iron liquid of generation is from iron liquid outlet discharge.
In described deironing carbon removing device, unless otherwise prescribed, from start to finish, term " molten mass " refers to the initial molten mixture that has comprised iron liquid and fused solution, and along with the carrying out of processing, slowly physical layering becomes described iron liquid and described fused solution.
In the time carrying out described deironing, de-carbon operation, the temperature of fusion tank is controlled between 1800-2000 ℃, for example, can be 1800 ℃, 1850 ℃, 1900 ℃, 1950 ℃ or 2000 ℃.
Utilize in the method that aluminous fly-ash prepares ceramic fibre of the present invention, in step D, fibroblast temperature is 1500-1700 ℃, for example, can be 1500 ℃, 1550 ℃, 1600 ℃, 1650 ℃ or 1700 ℃.
In the time blowing a thread fibroblast, winding-up wind speed >=200 meter per second.
In the time getting rid of a thread fibroblast, the rotating speed of tumbling machine is 6000-7200 rev/min, for example, be 6000 revs/min, 6200 revs/min, 6400 revs/min, 6600 revs/min, 6800 revs/min, 7000 revs/min or 7200 revs/min.
As mentioned above, the aforesaid operations step of the application of the invention and each technological parameter, can use aluminous fly-ash to make the ceramic fibre of high added value, and the ceramic fibre of gained has good performance, can meet the concrete application index in multiple fields.
In general, the present invention has following advantage and disadvantage:
1. the high added value, the high-efficiency comprehensive utilization that have realized aluminous fly-ash, can produce huge economic benefit and social value;
2. reduce solid waste total amount, protected environment, thereby promoted the harmonious development of economy, environment, realized the leap to recycling economy by society of resources recycling.
Accompanying drawing explanation
Fig. 1 is the structural representation of the deironing carbon removing device one that uses in steps A of the present invention;
Fig. 2 is another kind of structural representation of the deironing carbon removing device two that uses in steps A of the present invention.
Wherein, in Fig. 1 and Fig. 2, each number designation refers to respectively following concrete meaning, element or parts.
In figure: 1, outer cell body, 2, interior cell body, 3, cooling sandwith layer, 4, discharging opening, 5, the outlet of iron liquid, 6, melt electrode, 7, stop valve, 8, anti-condensation electrode, 9, aeration tube.
Fig. 3 is the Electronic Speculum microphoto of the embodiment of the present invention 1 gained ceramic fibre.
The specific embodiment
Below by specific embodiment, the present invention is described in detail; but the purposes of these exemplary embodiments and object are only used for exemplifying the present invention; not real protection scope of the present invention is formed to any type of any restriction, more non-protection scope of the present invention is confined to this.
Wherein, the aluminous fly-ash using in all embodiment is the aluminous fly-ash with chemical composition in above-mentioned table 1.
deironing carbon removing device one
As shown in Figure 1, deironing carbon removing device of the present invention, comprise fusion tank, fusion tank open top, the bottom land of fusion tank is obliquely installed, the medium position of bottom land is provided with discharging opening 4, the extreme lower position of bottom land is provided with iron liquid outlet 5, in fusion tank, be provided with three melt electrodes 6 for material in heating and melting groove, between three melt electrodes 6, be mutually 60 ° of angles, in iron liquid outlet 5, be provided with an anti-condensation electrode 8 that prevents iron liquid condensing, in fused solution discharging opening 4, also can be provided with the Anti-solidification electrode (attached not shown) that prevents fused solution and solidify.Certainly, the mode of heating of fusion tank there is no special restriction, for example, can adopt high-frequency melting, and those skilled in the art can select as required and voluntarily.
Described fusion tank comprises interior cell body 2 and outer cell body 1, between interior cell body 2 and outer cell body 1, is provided with cooling sandwith layer 3, and cooling sandwith layer 3 connects cooling water source by pipeline, and pipeline is provided with stop valve 7.
As everyone knows, the binary phase diagraml of aluminium oxide and silica is known, fusing point can be controlled between 1800-2000 ℃ and use, when use, the temperature of fusion tank is controlled between 1800-2000 ℃, this is more than the fusing point of iron, after spherolite is added in interior cell body 2 by feeding device (not shown), three melt electrodes 6 are switched on, along with the carrying out of energising, melt electrode 6 peripheral regions slowly melt, and expand gradually, because formed molten mass itself has very high resistance, thereby can be by the current flow heats of self, at this moment on can be slowly, carry melt electrode 6, and the spherolite that relies on self electric current of molten mass to continue not melting heats.In heating process, oxidation of impurities iron in spherolite and carbon generation reduction reaction, wherein carbon is converted into oxycarbide as carbon dioxide or carbon monoxide discharge, iron oxides impurity forms iron liquid in the interior thawing of interior cell body 2, and under self gravitation effect, be pooled to iron liquid outlet 5 along the inclination of bottom land, discharged and collected or further moulding by iron liquid outlet 5, separating the high-quality fused solution obtaining can be discharged by discharging opening 4, can follow-uply be used for preparing high-performance ceramic fiber.Wherein, in discharging opening 4, can be provided with the anti-condensation electrode (not shown) that prevents that fused solution from solidifying.
deironing carbon removing device two
As shown in Figure 2, a kind of deironing carbon removing device of the present invention, its structure and deironing carbon removing device one are basic identical, its difference is: the aeration tube 9 that is also additionally provided with some lateral arrangement and is made up of ceramic material in fusion tank, the quantity of aeration tube 9, according to the volume settings of fusion tank, offers some passages on aeration tube 9, aeration tube 9 runs through fusion tank and close bottom land setting, aeration tube 9 one end sealings, the other end connects compressed air source.
When use, in the time of the interior formation molten mass of interior cell body 2, can use gases at high pressure to form bubble and stir, make reaction more abundant, removal of impurities is more thorough.After removal of impurities, when discharge, open stop valve 7, in cooling sandwith layer 3, add recirculated cooling water, after the heat of recovery molten mass, recycle.
the operation of deironing de-carbon
Use the deironing carbon removing device shown in Fig. 1 to carry out deironing operation, wherein between three melt electrodes, be mutually 60-120 ° of angle, in operating process, keep the temperature of fusion tank between 1800-2000 ℃, the fused solution that the purity obtaining from discharging opening improves is for subsequent step.
Can also use the deironing carbon removing device shown in Fig. 2 to carry out deironing operation, wherein between three melt electrodes, be mutually 60-120 ° of angle, in operating process, keep the temperature of fusion tank between 1800-2000 ℃.Operating period, is used gases at high pressure to carry out bubbling stirring by aeration tube, thereby makes reaction more fully, completely, has improved dust removal rate.The fused solution that the purity obtaining from discharging opening improves is for subsequent step.
Embodiment 1
A, batching
The aluminous fly-ash and the bauxite that take respectively table 1, carry out proportioning, then both mixed, and prepared burden, and wherein the quality of alumina content (being the alumina content sum in aluminous fly-ash and bauxite) in batching is 43%.
B, pelletizing
In the batching of steps A gained, add polyvinyl alcohol, wherein the quality of polyvinyl alcohol is 1% of batching quality, obtains the spherolite that diameter is 3cm after pelletizing.
C, fusing, deironing de-carbon
Spherolite is joined in above-mentioned deironing carbon removing device one, is wherein 80 ° of angles between three melt electrodes, energising melting, and the temperature that makes fusion tank is between 1800-2000 ℃, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can be carried out one or many, until carbon mass content is wherein less than 0.1%, weight of iron content is less than 0.5%.
D, fibroblast
The high-temperature fusion liquid of step C is blown to a fibroblast, and wherein fibroblast temperature is 1500 ℃, and winding-up wind speed is 200 meter per seconds, obtains final products ceramic fibre, called after XW1.
Embodiment 2
A, batching
The aluminous fly-ash and the bauxite that take respectively table 1, carry out proportioning, then both mixed, and prepared burden, and wherein the quality of alumina content (being the alumina content sum in aluminous fly-ash and bauxite) in batching is 46%.
B, pelletizing
In the batching of steps A gained, add polyvinyl alcohol, wherein the quality of polyvinyl alcohol is 3% of batching quality, obtains the spherolite that diameter is 5cm after pelletizing.
C, fusing, deironing de-carbon
Spherolite is joined in above-mentioned deironing carbon removing device two, is wherein 100 ° of angles between three melt electrodes, energising melting, and the temperature that makes fusion tank is between 1800-2000 ℃, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can be carried out one or many, until carbon mass content is wherein less than 0.1%, weight of iron content is less than 0.5%.
D, fibroblast
The high-temperature fusion liquid of step C is got rid of to a fibroblast, and wherein fibroblast temperature is 1600 ℃, and the rotating speed of tumbling machine is 6000 revs/min, obtains final products ceramic fibre, called after XW2.
Embodiment 3
A, batching
The aluminous fly-ash and the bauxite that take respectively table 1, carry out proportioning, then both mixed, and prepared burden, and wherein the quality of alumina content (being the alumina content sum in aluminous fly-ash and bauxite) in batching is 48%.
B, pelletizing
In the batching of steps A gained, add polyvinyl alcohol, wherein the quality of polyvinyl alcohol is 5% of batching quality, obtains the spherolite that diameter is 6cm after pelletizing.
C, fusing, deironing de-carbon
Spherolite is joined in above-mentioned deironing carbon removing device one, is wherein 120 ° of angles between three melt electrodes, energising melting, and the temperature that makes fusion tank is between 1800-2000 ℃, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can be carried out one or many, until carbon mass content is wherein less than 0.1%, weight of iron content is less than 0.5%.
D, fibroblast
The high-temperature fusion liquid of step C is blown to a fibroblast, and wherein fibroblast temperature is 1700 ℃, and winding-up wind speed 250 meter per seconds, obtain final products ceramic fibre, called after XW3.
Embodiment 4
A, batching
The aluminous fly-ash and the bauxite that take respectively table 1, carry out proportioning, then both mixed, and prepared burden, and wherein the quality of alumina content (being the alumina content sum in aluminous fly-ash and bauxite) in batching is 50%.
B, pelletizing
In the batching of steps A gained, add polyvinyl alcohol, wherein the quality of polyvinyl alcohol is 2% of batching quality, obtains the spherolite that diameter is 4cm after pelletizing.
C, fusing, deironing de-carbon
Spherolite is joined in above-mentioned deironing carbon removing device one, is wherein 60 ° of angles between three melt electrodes, energising melting, and the temperature that makes fusion tank is between 1800-2000 ℃, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can be carried out one or many, until carbon mass content is wherein less than 0.1%, weight of iron content is less than 0.5%.
D, fibroblast
The high-temperature fusion liquid of step C is got rid of to a fibroblast, and wherein fibroblast temperature is 1550 ℃, and the rotating speed of tumbling machine is 7000 revs/min, obtains final products ceramic fibre, called after XW4.
Embodiment 5
A, batching
The aluminous fly-ash and the bauxite that take respectively table 1, carry out proportioning, then both mixed, and prepared burden, and wherein the quality of alumina content (being the alumina content sum in aluminous fly-ash and bauxite) in batching is 45%.
B, pelletizing
In the batching of steps A gained, add polyvinyl alcohol, wherein the quality of polyvinyl alcohol is 3% of batching quality, obtains the spherolite that diameter is 5cm after pelletizing.
C, fusing, deironing de-carbon
Spherolite is joined in above-mentioned deironing carbon removing device two, is wherein 120 ° of angles between three melt electrodes, energising melting, and the temperature that makes fusion tank is between 1800-2000 ℃, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can be carried out one or many, until carbon mass content is wherein less than 0.1%, weight of iron content is less than 0.5%.
D, fibroblast
The high-temperature fusion liquid of step C is blown to a fibroblast, and wherein fibroblast temperature is 1650 ℃, and winding-up wind speed 300 meter per seconds, obtain final products ceramic fibre, called after XW5.
Fiber detects
Diameter and the form of practical scanning electron microscopic observation embodiment 1-5 gained ceramic fibre, for example Fig. 3 is the scanning electron microscope (SEM) photograph of XW1, from this figure: the ceramic fibre diameter of gained evenly, smooth surface, there is good physical aspect.
The ceramic fibre XW2-XW5 of practical scanning electron microscopic observation embodiment 2-5 gained, find that they have the highly similarly diameter with XW1 shown in Fig. 3, and same diameter is even, smooth surface, has good physical aspect.
Fibre performance
For example, according to the known ceramics Fibreboard Production technique (adopting vacuum forming) in currently available technology, prepare ceramic beaverboard with the XW1-5 of embodiment of the present invention 1-5, then detect the various physical parameters of gained ceramic beaverboard, concrete data see the following form 2.
Table 2. ceramic beaverboard technical performance
As seen from the above table, the ceramic beaverboard being made by gained ceramic fibre of the present invention has good physical property, as advantages such as good heat endurance, low-shrinkage, the high and low thermal conductivities of compressive resistance, can be used for insulation, the field such as heat insulation.
In sum; the described method of the application of the invention, can be made by aluminous fly-ash the ceramic fibre of high added value, thereby has opened up new Application Areas for the high value added utilization of aluminous fly-ash; and greatly protected environment, there is good social benefit and economic worth.
The purposes that should be appreciated that these embodiment only limits the scope of the invention for the present invention being described but not being intended to.In addition; also should understand; after having read technology contents of the present invention, those skilled in the art can make various changes, modification and/or modification to the present invention, within these all equivalent form of values fall within the protection domain that the application's appended claims limits equally.

Claims (10)

1. utilize aluminous fly-ash to prepare a method for ceramic fibre, described method comprises the steps:
A, batching
Take respectively aluminous fly-ash and bauxite, carry out proportioning according to certain component, then both are mixed, prepared burden;
B, pelletizing
Batching is carried out to pelletizing, obtain spherolite;
C, fusing, deironing de-carbon
By spherolite fusing, deironing de-carbon, obtain high-temperature fusion liquid;
D, fibroblast
High-temperature fusion liquid is blown to silk or gets rid of a fibroblast, obtain final products ceramic fibre.
2. the method for claim 1, is characterized in that: it is 43-50% that the aluminous fly-ash in steps A and the proportioning of bauxite should make the quality of alumina content in gained batching.
3. method as claimed in claim 1 or 2, is characterized in that: the quality of alumina percentage composition in steps A in aluminous fly-ash is 30-45%.
4. the method as described in claim 1-3 any one, is characterized in that: in step B, add organic binder bond in the time of granulation, described organic binder bond is the 1-5% of batching quality.
5. the method as described in claim 1-4 any one, it is characterized in that: in step C, melt, deironing de-carbon when operation uses deironing carbon removing device, described deironing carbon removing device comprises fusion tank, described fusion tank open top, the bottom land of described fusion tank is obliquely installed, the medium position of described bottom land is provided with discharging opening, the extreme lower position of described bottom land is provided with the outlet of iron liquid, in described fusion tank, be provided with three for heating the melt electrode of material in described fusion tank, between three described melt electrodes, be mutually 60-120 ° of angle.
6. method as claimed in claim 5, it is characterized in that: the aeration tube that is provided with some lateral arrangement and is made by ceramic material in described fusion tank, on described aeration tube, offer some passages, described aeration tube runs through described fusion tank and the sealing of described aeration tube one end, and the other end connects compressed air source.
7. the method as described in claim 1-6 any one, is characterized in that: the carbon mass content in the gained molten mass after the operation of the deironing de-carbon of step C is less than 0.1%, weight of iron content is less than 0.5%.
8. the method as described in claim 1-7 any one, is characterized in that: while carrying out the described deironing de-carbon operation of step C, the temperature of fusion tank is controlled between 1800-2000 ℃.
9. the method as described in claim 1-8 any one, is characterized in that: in step D, fibroblast temperature is 1500-1700 ℃.
10. the method as described in claim 1-9 any one, is characterized in that: in step D, and in the time blowing a thread fibroblast, winding-up wind speed >=200 meter per second; In the time getting rid of a thread fibroblast, the rotating speed of tumbling machine is 6000-7200 rev/min.
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Cited By (3)

* Cited by examiner, † Cited by third party
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CN104387031A (en) * 2014-10-22 2015-03-04 华文蔚 Alumina ceramic material and preparation method thereof
CN111499364A (en) * 2020-05-11 2020-08-07 唐山顺浩环保科技有限公司 Superfine ceramic fiber cotton and production method thereof
CN111533432A (en) * 2020-05-11 2020-08-14 唐山顺浩环保科技有限公司 Aluminum silicate fiber cotton raw material melting process based on molybdenum electrode high-temperature melting furnace

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405723A (en) * 1979-10-08 1983-09-20 Gmundner Zementwerke Hans Hatschek Aktiengesellschaft Ceramic fibers and wools and a process for their production
EP0116873A1 (en) * 1983-02-22 1984-08-29 Combustion Engineering, Inc. Ceramic fiber composition
JPH06212516A (en) * 1992-12-18 1994-08-02 Onoda Cement Co Ltd Production of ceramic fiber
CN1340639A (en) * 2000-09-01 2002-03-20 山东鲁阳股份有限公司 Aluminium silicate fibres for fabrics
CN101235555A (en) * 2007-02-01 2008-08-06 山西鑫秀工矿废渣利用有限公司 Method for preparing fiber by using coal gangue clinker as raw material
CN102718495A (en) * 2012-06-25 2012-10-10 武汉科技大学 Magnesium silicon ceramic fiber and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405723A (en) * 1979-10-08 1983-09-20 Gmundner Zementwerke Hans Hatschek Aktiengesellschaft Ceramic fibers and wools and a process for their production
EP0116873A1 (en) * 1983-02-22 1984-08-29 Combustion Engineering, Inc. Ceramic fiber composition
JPH06212516A (en) * 1992-12-18 1994-08-02 Onoda Cement Co Ltd Production of ceramic fiber
CN1340639A (en) * 2000-09-01 2002-03-20 山东鲁阳股份有限公司 Aluminium silicate fibres for fabrics
CN101235555A (en) * 2007-02-01 2008-08-06 山西鑫秀工矿废渣利用有限公司 Method for preparing fiber by using coal gangue clinker as raw material
CN102718495A (en) * 2012-06-25 2012-10-10 武汉科技大学 Magnesium silicon ceramic fiber and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104387031A (en) * 2014-10-22 2015-03-04 华文蔚 Alumina ceramic material and preparation method thereof
CN111499364A (en) * 2020-05-11 2020-08-07 唐山顺浩环保科技有限公司 Superfine ceramic fiber cotton and production method thereof
CN111533432A (en) * 2020-05-11 2020-08-14 唐山顺浩环保科技有限公司 Aluminum silicate fiber cotton raw material melting process based on molybdenum electrode high-temperature melting furnace

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