CN103820881B - A kind of method utilizing aluminous fly-ash to prepare ceramic fibre - Google Patents
A kind of method utilizing aluminous fly-ash to prepare ceramic fibre Download PDFInfo
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- CN103820881B CN103820881B CN201410046021.7A CN201410046021A CN103820881B CN 103820881 B CN103820881 B CN 103820881B CN 201410046021 A CN201410046021 A CN 201410046021A CN 103820881 B CN103820881 B CN 103820881B
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Abstract
The present invention relates to a kind of method utilizing aluminous fly-ash to prepare ceramic fibre, described method comprises the steps: A, batching; B, pelletizing; C, fusing, deironing de-carbon; D, fibroblast.By selecting suitable proportion material and amount ratio, and control the technological parameter of each process, and obtain the ceramic fibre that functional, diameter is evenly distributed, through detecting, the various fibre function admirables obtained by the ceramic fibre that such as the method obtains, meet many application indexs such as heat insulation, fire-resistant, moistureproof completely, have broad application prospects and industrialization potential in energy-saving and emission-reduction, environmental area waste recycling field.
Description
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 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 produced 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, flyash annual emissions about 500,000,000 tons in the world, and China always is the main component part of energy sources due to coal for a long time, therefore all produces the flyash of enormous amount every year, current China flyash heap, high-volume more than 1,500,000,000 tons, stores up grey field land occupation more than 40,000 hectare.
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 to build the road, but the utilization of high added value not yet large-scale promotion.
Due in different producing coal regions, form the inorganic mineral of coal and content height is all different, thus it is also different on component is formed to result in the flyash that burning produces.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 mass percentage meter, primarily of SiO
2(40-60%), Al
2o
3(30-50%), Fe
2o
3(2-10%), CaO (1-10%) and charcoal (1-2.6%) composition that do not fire, also have a small amount of MgO, Na in addition
2o, K
2o, SO
3and the trace element such as arsenic, copper, zinc, wherein SiO
2, Al
2o
3, Fe
2o
3more than 90% is accounted for this sum of CaO, belong to aluminous fly-ash, these areas aluminous fly-ash year generation more than 5,000 ten thousand tons, stack flyash and need hundreds of hectare of land, not only serious environment pollution, and take a large amount of soil, the embarrassment fact corresponding with huge output is that the comprehensive utilization ratio of the aluminous fly-ash in these areas is less than 30% simultaneously, and mainly in steam-pressing brisk and building block etc. that added value is very low, and then cause that resource reutilization level is not high, economic benefit is poor.
Just because of the scarcity of high added value process means and the low of recycling degree, aluminous fly-ash is caused mainly to save as master with heap, this is severe contamination environment not only, also consume a large amount of land resource, become these areas and had to face and one of the subject matter and a difficult problem of needing solution badly.
To this, numerous researchers and manufacturer have carried out positive research, and have developed multiple use flyash to prepare the method for various goods.
Such as, 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 of 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 Coal ash ceramic brick and preparation method thereof; CN101164962A discloses a kind of ceramic wall and floor bricks utilizing 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 a kind of inorganic high-temperature resistant fibrous light Novel heat insulation energy-saving material, there is high temperature resistant, Heat stability is good, lightweight, energy-saving effect significantly feature such as (1 ton of energy-conservation heat energy being equivalent to 200 tons of standard coals of ceramic fibre), 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, use the huge flyash of China output to prepare ceramic fibre, on the one hand can maximum restriction utilize flyash, realize its high value added utilization degree.On the other hand, resource, energy circulation and the innovation item in regeneration field especially, to raising waste utilization efficiency, make full use of the discarded energy, promote the economy and society of China, the harmonious development of man and nature, realize resources economy, to jumping of recycling economy, there is extremely profound significance.All these, the basic place all becoming research power of the present invention He be accomplished.
Summary of the invention
For current demand as above and technical development, the present inventor, through a large amount of further investigations, after having paid sufficient creative work, has developed a kind of method utilizing aluminous fly-ash to prepare ceramic fibre, thus has completed the present invention.
Specifically, the present invention relates to a kind of method 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 utilizing aluminous fly-ash to prepare ceramic fibre, described method comprises the steps:
A, batching
Take aluminous fly-ash and bauxite respectively, carry out proportioning according to certain component, then both are mixed, prepared burden;
B, pelletizing
Batching is carried out pelletizing, obtains spherolite;
C, fusing, deironing de-carbon
By spherolite fusing, deironing de-carbon, obtain high-temperature fusion liquid;
D, fibroblast
High-temperature fusion liquid blown silk or gets rid of a fibroblast, obtaining final products ceramic fibre.
Prepare in the method for ceramic fibre at the aluminous fly-ash that utilizes of the present invention, quality of alumina content (the alumina content sum namely in aluminous fly-ash and bauxite) during aluminous fly-ash in steps A and the proportioning of bauxite should make gained prepare burden is 43-50%, such as, can be 43%, 45%, 47%, 49% or 50%.
Prepare in the method for ceramic fibre at the aluminous fly-ash that utilizes of the present invention, the quality of alumina percentage composition in steps A in aluminous fly-ash is 30-45%, such as, can be 30%, 35%, 40% or 45%.Such as can be from Shuozhou, shanxi Province chemical composition aluminous fly-ash as shown in table 1 below:
The chemical composition of table 1. aluminous fly-ash
Wherein: LOI is loss on ignition.
Prepare in the method for ceramic fibre at the aluminous fly-ash that utilizes of the present invention, in stepb, batching is carried out pelletizing, obtains spherolite.Add organic binder bond when granulation, described organic binder bond is the 1-5% of batching quality, such as, be 1%, 2%, 3%, 4% or 5%.
Wherein, described organic binder bond is conventional binders conventional in granulation field, such as, be polyvinyl alcohol or other similar large molecular binder.
Wherein, the diameter of gained spherolite is 3-6cm, such as, be 3cm, 4cm, 5cm or 6cm.
The device that this granulation operations uses is the conventional equipment in granulation field, and this is no longer going to repeat them.
Prepare in the method for ceramic fibre at the aluminous fly-ash that utilizes of the present invention, melt in step C, deironing carbon removing device is used during the operation of deironing de-carbon, 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, three are provided with for heating the melt electrode of material in described fusion tank in described fusion tank, 60-120 ° of angle is mutually between three described melt electrodes, such as 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 this content requirement can not be reached, then can repeat the operation of this step, until carbon mass content in gained fused solution and weight of iron content meet These parameters require (such as the fused solution after first time deironing de-carbon can be pulverized again, and then fusing, deironing de-carbon).
In described deironing carbon removing device, as a kind of optimal technical scheme, be preferably mutually 80 ° of angles or 120 ° of angles between three described melt electrodes.
In described deironing carbon removing device, as a kind of optimal technical scheme, in described discharging opening, be provided with an anti-condensation electrode preventing fused solution from solidifying.
In described deironing carbon removing device, as a kind of optimal technical scheme, in described iron liquid outlet, be provided with an anti-condensation electrode preventing iron liquid from solidifying.
In described deironing carbon removing device, as a kind of optimal technical scheme, described fusion tank comprises interior cell body and outer cell body, is provided with cooling sandwith layer between described interior cell body and outer cell body, 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, some lateral arrangement are provided with and the aeration tube be made up of ceramic material in described fusion tank, described aeration tube offers some passages, described aeration tube runs through described fusion tank and described aeration tube one end is closed, 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 reasonably can be determined according to operational requirements, molten mass can be carried out suitable or farthest fully to stir.
In described deironing carbon removing device, as a kind of optimal technical scheme, described aeration tube is arranged near described bottom land, thus 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, eliminates the liquid of iron oxide and residual carbon, eliminate this fused solution after impurity to flow 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 then exports discharge from iron liquid.
In described deironing carbon removing device, unless otherwise prescribed, from start to finish, term " molten mass " refers to the initial molten mixture containing iron liquid and fused solution, and along with the carrying out processed, slowly physical layering becomes described iron liquid and described fused solution.
When carrying out described deironing, de-carbon operation, the temperature of fusion tank controls between 1800-2000 DEG C, such as, can be 1800 DEG C, 1850 DEG C, 1900 DEG C, 1950 DEG C or 2000 DEG C.
Prepare in the method for ceramic fibre at the aluminous fly-ash that utilizes of the present invention, in step D, fibroblast temperature is 1500-1700 DEG C, such as, can be 1500 DEG C, 1550 DEG C, 1600 DEG C, 1650 DEG C or 1700 DEG C.
When blowing a thread fibroblast, winding-up wind speed >=200 meter per second.
When getting rid of a thread fibroblast, the rotating speed of tumbling machine is 6000-7200 rev/min, such as, 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, aluminous fly-ash can be used to obtain the ceramic fibre of high added value, and the ceramic fibre of gained has good performance, can meet the embody rule index in multiple field.
In general, the present invention has following advantage and disadvantage:
1. achieve the high added value of aluminous fly-ash, high-efficiency comprehensive utilization, huge economic benefit and social value can be produced;
2. decrease solid waste total amount, protect environment, thus facilitate the harmonious development of economy, environment, achieve by the leap of society of resources recycling to recycling economy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the deironing carbon removing device one used in steps A of the present invention;
Fig. 2 is another kind of structural representation of the deironing carbon removing device two used in steps A of the present invention.
Wherein, in fig. 1 and 2, each number designation refers to following concrete meaning, element or parts respectively.
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 electron micrograph of the embodiment of the present invention 1 gained ceramic fibre.
Detailed description of the invention
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 any type of any restriction is formed to real protection scope of the present invention, more non-protection scope of the present invention is confined to this.
Wherein, the aluminous fly-ash used in all embodiments 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, three melt electrodes 6 for material in heating and melting groove are provided with in fusion tank, 60 ° of angles are mutually between three melt electrodes 6, be provided with the anti-condensation electrode 8 that prevents iron liquid condensing in iron liquid outlet 5, in fused solution discharging opening 4, also can be provided with the Anti-solidification electrode (attached not shown) preventing fused solution from solidifying.Certainly, there is no particular limitation for the mode of heating of fusion tank, such as, 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, and be provided with cooling sandwith layer 3 between interior cell body 2 and outer cell body 1, 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 control to use between 1800-2000 DEG C, during use, the temperature of fusion tank controls between 1800-2000 DEG C, 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 energized, along with the carrying out of energising, melt electrode 6 peripheral region slowly melts, and expand gradually, because formed molten mass itself has very high resistance, thus can by the current flow heats of self, at this moment can slowly on carry melt electrode 6, and rely on self electric current of molten mass to continue to heat the spherolite do not melted.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 is then melted and is formed iron liquid in interior cell body 2, and under self gravitation effect, iron liquid outlet 5 is pooled to along the inclination of bottom land, export 5 by iron liquid to discharge and carry out collecting or shaping further, being separated the high-quality fused solution obtained can be discharged by discharging opening 4, can follow-uply be used for preparing high-performance ceramic fiber.Wherein, the anti-condensation electrode (not shown) preventing fused solution from solidifying can be provided with in discharging opening 4.
deironing carbon removing device two
As shown in Figure 2, a kind of deironing carbon removing device of the present invention, its structure is substantially identical with deironing carbon removing device one, its difference is: be also additionally provided with some lateral arrangement in fusion tank and the aeration tube 9 be made up of ceramic material, the quantity of aeration tube 9, according to the volume settings of fusion tank, aeration tube 9 offers some passages, and aeration tube 9 runs through fusion tank and arranges near bottom land, aeration tube 9 one end is closed, and the other end connects compressed air source.
During use, when forming molten mass in interior cell body 2, gases at high pressure can be used to form bubble and stir, make reaction more abundant, removal of impurities is more thorough.After removal of impurities, during discharge, open stop valve 7, in cooling sandwith layer 3, add recirculated cooling water, recycle after reclaiming the heat of molten mass.
deironing de-carbon operates
The deironing carbon removing device shown in Fig. 1 is used to carry out deironing operation, wherein be mutually 60-120 ° of angle between three melt electrodes, keep the temperature of fusion tank in operating process between 1800-2000 DEG C, the fused solution that the purity obtained from discharging opening improves is for subsequent step.
The deironing carbon removing device shown in Fig. 2 can also be used to carry out deironing operation, be wherein mutually 60-120 ° of angle between three melt electrodes, in operating process, keep the temperature of fusion tank between 1800-2000 DEG C.During operation, use gases at high pressure to carry out bubbling stirring by aeration tube, thus make reaction more abundant, complete, improve dust removal rate.The fused solution that the purity obtained from discharging opening improves is for subsequent step.
Embodiment 1
A, batching
Take aluminous fly-ash and the bauxite of table 1 respectively, carry out proportioning, then both mixed, prepared burden, the quality of alumina content (the alumina content sum namely in aluminous fly-ash and bauxite) wherein 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
Being joined by spherolite in above-mentioned deironing carbon removing device one, is wherein 80 ° of angles between three melt electrodes, and energising melting, makes the temperature of fusion tank be between 1800-2000 DEG C, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can carry 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
Carried out blowing a fibroblast by the high-temperature fusion liquid of step C, wherein fibroblast temperature is 1500 DEG C, and winding-up wind speed is 200 meter per seconds, obtains final products ceramic fibre, called after XW1.
Embodiment 2
A, batching
Take aluminous fly-ash and the bauxite of table 1 respectively, carry out proportioning, then both mixed, prepared burden, the quality of alumina content (the alumina content sum namely in aluminous fly-ash and bauxite) wherein 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
Being joined by spherolite in above-mentioned deironing carbon removing device two, is wherein 100 ° of angles between three melt electrodes, and energising melting, makes the temperature of fusion tank be between 1800-2000 DEG C, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can carry 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
Carried out getting rid of a fibroblast by the high-temperature fusion liquid of step C, wherein fibroblast temperature is 1600 DEG C, and the rotating speed of tumbling machine is 6000 revs/min, obtains final products ceramic fibre, called after XW2.
Embodiment 3
A, batching
Take aluminous fly-ash and the bauxite of table 1 respectively, carry out proportioning, then both mixed, prepared burden, the quality of alumina content (the alumina content sum namely in aluminous fly-ash and bauxite) wherein 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
Being joined by spherolite in above-mentioned deironing carbon removing device one, is wherein 120 ° of angles between three melt electrodes, and energising melting, makes the temperature of fusion tank be between 1800-2000 DEG C, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can carry 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
Carried out blowing a fibroblast by the high-temperature fusion liquid of step C, wherein fibroblast temperature is 1700 DEG C, and winding-up wind speed 250 meter per second, obtains final products ceramic fibre, called after XW3.
Embodiment 4
A, batching
Take aluminous fly-ash and the bauxite of table 1 respectively, carry out proportioning, then both mixed, prepared burden, the quality of alumina content (the alumina content sum namely in aluminous fly-ash and bauxite) wherein 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
Being joined by spherolite in above-mentioned deironing carbon removing device one, is wherein 60 ° of angles between three melt electrodes, and energising melting, makes the temperature of fusion tank be between 1800-2000 DEG C, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can carry 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
Carried out getting rid of a fibroblast by the high-temperature fusion liquid of step C, wherein fibroblast temperature is 1550 DEG C, and the rotating speed of tumbling machine is 7000 revs/min, obtains final products ceramic fibre, called after XW4.
Embodiment 5
A, batching
Take aluminous fly-ash and the bauxite of table 1 respectively, carry out proportioning, then both mixed, prepared burden, the quality of alumina content (the alumina content sum namely in aluminous fly-ash and bauxite) wherein 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
Being joined by spherolite in above-mentioned deironing carbon removing device two, is wherein 120 ° of angles between three melt electrodes, and energising melting, makes the temperature of fusion tank be between 1800-2000 DEG C, by spherolite fusing, deironing de-carbon, obtains high-temperature fusion liquid.This operation can carry 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
Carried out blowing a fibroblast by the high-temperature fusion liquid of step C, wherein fibroblast temperature is 1650 DEG C, and winding-up wind speed 300 meter per second, obtains final products ceramic fibre, called after XW5.
Fiber check and measure
The diameter of practical scanning electron microscopic observation embodiment 1-5 gained ceramic fibre and form, such as Fig. 3 is the scanning electron microscope (SEM) photograph of XW1, from this figure: the ceramic fibre uniform diameter of gained, smooth surface, has good physical aspect.
The ceramic fibre XW2-XW5 of practical scanning electron microscopic observation embodiment 2-5 gained, finds that they have the diameter highly similar with XW1 shown in Fig. 3, and same uniform diameter, smooth surface, there is good physical aspect.
Fibre performance
According to the known ceramics fiberboard production processes (such as adopting vacuum forming) in currently available technology, the XW1-5 of embodiment of the present invention 1-5 is used to prepare ceramic beaverboard, 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 obtained by gained ceramic fibre of the present invention has good physical property, as advantages such as excellent heat endurance, low-shrinkage, the high and low thermal conductivities of compressive resistance, can be used for fields such as being incubated, heat insulation.
In sum; the described method of the application of the invention, can be obtained the ceramic fibre of high added value by aluminous fly-ash, thus has opened up new Application Areas for the high value added utilization of aluminous fly-ash; and greatly protect environment, there is good social benefit and economic worth.
Should be appreciated that the purposes of these embodiments is only not intended to for illustration of the present invention limit the scope of the invention.In addition; also should understand; after having read technology contents of the present invention, those skilled in the art can make various change, amendment and/or modification to the present invention, and these all equivalent form of values fall within the protection domain that the application's appended claims limits equally.
Claims (9)
1. utilize aluminous fly-ash to prepare a method for ceramic fibre, described method comprises the steps:
A, batching
Take aluminous fly-ash and bauxite respectively, carry out proportioning according to certain component, then both are mixed, prepared burden;
B, pelletizing
Batching is carried out pelletizing, obtains spherolite;
C, fusing, deironing de-carbon
By spherolite fusing, deironing de-carbon, obtain high-temperature fusion liquid;
D, fibroblast
High-temperature fusion liquid blown silk or gets rid of a fibroblast, obtaining final products ceramic fibre;
Carry out melting in step C, the operation of deironing de-carbon time 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, being provided with three for heating the melt electrode of material in described fusion tank, being mutually 60-120 ° of angle between three described melt electrodes in described fusion tank.
2. the method for claim 1, is characterized in that: the quality of alumina content during the aluminous fly-ash in steps A and the proportioning of bauxite should make gained prepare burden is 43-50%.
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. method as claimed in claim 1 or 2, is characterized in that: in step B, adds organic binder bond when granulation, and described organic binder bond is the 1-5% of batching quality.
5. the method for claim 1, it is characterized in that: be provided with some lateral arrangement in described fusion tank and the aeration tube be made up of ceramic material, described aeration tube offers some passages, described aeration tube runs through described fusion tank and described aeration tube one end is closed, and the other end connects compressed air source.
6. method as claimed in claim 1 or 2, is characterized in that: the carbon mass content in the gained molten mass after the deironing de-carbon operation of step C is less than 0.1%, weight of iron content is less than 0.5%.
7. method as claimed in claim 1 or 2, is characterized in that: when carrying out the described deironing de-carbon operation of step C, the temperature of fusion tank controls between 1800-2000 DEG C.
8. method as claimed in claim 1 or 2, it is characterized in that: in step D, fibroblast temperature is 1500-1700 DEG C.
9. method as claimed in claim 1 or 2, is characterized in that: in step D, when blowing a thread fibroblast, and winding-up wind speed >=200 meter per second; When getting rid of a thread fibroblast, the rotating speed of tumbling machine is 6000-7200 rev/min.
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| CN104387031B (en) * | 2014-10-22 | 2016-09-07 | 华文蔚 | A kind of alumina ceramic material and preparation 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 |
| 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 |
| CN113457577B (en) * | 2021-07-06 | 2023-06-06 | 淄博胜赢化工有限公司 | Raw material mixing and melting device for producing p-tert-butyl catechol and application method thereof |
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| JPH06212516A (en) * | 1992-12-18 | 1994-08-02 | Onoda Cement Co Ltd | Production of ceramic fiber |
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2014
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Patent Citations (5)
| 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 |
| 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 |
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