CN207347181U - Rafifinal atomization explosion method prepares the device of high-purity alumina powder - Google Patents
Rafifinal atomization explosion method prepares the device of high-purity alumina powder Download PDFInfo
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- CN207347181U CN207347181U CN201721438766.3U CN201721438766U CN207347181U CN 207347181 U CN207347181 U CN 207347181U CN 201721438766 U CN201721438766 U CN 201721438766U CN 207347181 U CN207347181 U CN 207347181U
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- alumina powder
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Abstract
It the utility model is related to high-purity alumina powder production equipment technology, it is the device that a kind of rafifinal atomization explosion method prepares high-purity alumina powder, it includes reactor, aluminium ingot melting plant, air transporting arrangement, the high temperature molten aluminum outlet of aluminium ingot melting plant lower part is connected with the inlet on reactor top, the gas outlet of air transporting arrangement is connected with the air inlet on reactor top, and igniter is provided with the reactor between inlet and air inlet.The utility model reasonable and compact in structure, it is easy to use, reactor, aluminium ingot melting plant, air transporting arrangement, the combination settings of igniter, when making to prepare high-purity alumina powder using the present apparatus, preparation time is shorter, and 3 to 4 hours are only needed to high-purity alumina powder from high-purity aluminium ingot；When preparing high-purity alumina powder using the present apparatus, it is not necessary to water, so eliminating the interference of sodium, potassium, hydroxyl plasma.
Description
Technical field
High-purity alumina powder production equipment technology is the utility model is related to, is prepared by a kind of rafifinal atomization explosion method
The device of high-purity alumina powder.
Background technology
High purity alumina powder at home and abroad develops extremely rapid as a kind of fine chemical product, is widely used in space flight
Aviation, weapons, electrical apparatus insulation material, ic substrate, high speed cutting tool, high-strength wearproof corrosion-resistant material, high intensity
Many high-tech tips such as gas discharge lamp tube, fluorophor carrier, monocrystal material, catalyst carrier, laser material industry, is
Green illumination three primary colors fluorescent powder, automobile sensor, tape additive, catalyst support coatings, semiconductor and liquid crystal display
The important foundation material of device, transparent high-pressure sodium fluorescent tube, precision instrument and aviation optics etc..
High-purity alumina powder requirement accomplish it is ultra-fine, high-purity, have relatively narrow particle diameter distribution, stable phase, without serious group
Poly- phenomenon.The preparation method of superfine alumina powder mainly has sol-gal process, alum pyrolysismethod, aluminium carbonate at this stage at present
Ammonium pyrolysismethod, aluminium isopropoxide Hydrolyze method, mercury chloride activation Hydrolyze method, plasma method, spray pyrolysis, spark-discharge method, water
Hot method, improvement Bayer process, high pure metal aluminium foil choline Hydrolyze method and rafifinal direct hydrolysis method etc..Hydrolyzed since mercury chloride activates
Method, plasma method, spray pyrolysis, spark-discharge method, hydro-thermal method, extraction method influenced by raw material, preparation method feature and
The influence of the maturity of method and be difficult to large-scale industrial production.Currently used production method has aluminium ammonium salt pyrolysismethod, alcohol
Brine solution and direct hydrolysis method.
One of prior art
Aluminium ammonium pyrolysismethod：Alum pyrolysismethod, ammonium hydrogen carbonate pyrolysismethod.
Alum pyrolysismethod：By the alum heat resolve of multiple crystallization and purification, then at a certain temperature phase inversion and
Phase is controlled, can obtain required superfine powder.The preferable superfine powder of sintering character is made by crushing in obtained alumina powder
Body.
Ammonium hydrogen carbonate pyrolysismethod：Alum addition ammonium hydrogen carbonate is first allowed to reaction and is converted into basic carbonate ammonium by this method
Aluminium, then high-purity aluminum carbonate basic ammonium heat resolve, powder are passed through phase inversion and crushing, obtain high-purity superfine alumina powder.
The alum pyrolysismethod that this method actually improves, but the product sodium potassium content obtained is high, and product purity is low.
The shortcomings that prior art one
This method process is complicated, and energy consumption is big, of high cost, there is also the problem of environmental pollution, the product sodium potassium content of acquisition
Height, product purity are low.
The prior art two：Improve Bayer process
The sodium content of every gram of alumina powder of Bayer process production is improved more than tens of micrograms, other micronutrient levels
Also high, product purity, which can only achieve 4N levels, cannot meet the requirement of synthetic sapphire production.Its principle is molten with sodium metaaluminate
Liquid carries out the process high purity aluminium hydroxides such as desiliconization for several times, iron removaling, decomposition, washing, then passes through the work such as high temperature roast, washing
High-purity ultra-fine alumina is made in sequence.
The shortcomings that prior art two
The method production technology is relative complex, and the dissolving of raw material in process of production is difficult to control, and γ _ water aluminium easily occurs
Stone, sintering temperature is higher, and product pick-up rate is low, and production process dissolution of raw material degree is difficult to control, and sintering temperature is high, finished product rate
Low, of high cost, product purity is unsatisfactory for artificial lens needs.Pattern is irregular, and bulk density is low, it is difficult to produces high density production
Product.The high product of bulk density such as to be obtained, it is necessary to carry out ball milling again and modification.
The prior art three：Alkoxide hydrolysis
Hydrolyzed using low-carbon alkoxy aluminium, that hydrolysis occurs for the aqueous low-carbon alcohols of aging association and low-carbon alkoxy aluminium and alkali is anti-
Should, obtained aluminium hydroxide can obtain alumina powder through drying, crushing.The aluminum oxide grain size that organo-aluminum compound obtains is thin,
Purity is high（More than 99.995%）, cost is low, can effectively reduce environmental pollution.
The shortcomings that prior art three
The problem of this method is there are multipaths, to be related to equipment more, and Organic Alcohol price is high, difficult recycling, waste liquid amount is big, price is held high
It is expensive, there are production cost it is high the problems such as.It is all very high to performance requirements such as raw material, reagent, technique, equipment, even with pure water
With indoor air can all produce important influence to purity, at the same in hydrolytic process alkali addition, cause sodium, potassium element to draw
Enter, cause sodium potassium content in final products to remain high, so as to influence purity.Pattern is irregular, and bulk density is low, it is difficult to produces
High density product.The high product of bulk density such as to be obtained, it is necessary to carry out ball milling again and modification.
The prior art four：Rafifinal direct activation Hydrolyze method
It is raw material to select rafifinal and pure water, using multistage activation and controlling reaction temperature, time, to reach high reaction
Speed and well dispersed powder, then carry out powder and disperse dry and be heat-treated, select grinding mode, optimizing drying condition, excellent
Change phase inversion condition (time, temperature and mode of heating) to obtain the alumina powder of good dispersion property and required phase.Whole work
Skill process is simple, cost is low, purity is easily controllable, and any pollution will not be caused to environment, is cleansing preparation method of making, does not add
Any catalyst.
The shortcomings that prior art four
Hydrolytic process carries out in totally-enclosed organic lining environment, can not purify again, and long flow path, cost is higher, technique
Condition is harsh, simultaneously as hydrogen is released in reaction, preparation process is related to high temperature, therefore there are production safety hidden danger.Pattern is not
Rule, bulk density are low, it is difficult to produce high density product.The high product of bulk density such as to be obtained, it is necessary to carry out ball milling again
Change and modification.
In short, no matter which kind of above-mentioned method, be required to high-purity aluminium ingot carry out mechanical treatment, be processed into powder, silk, bits, piece
Etc. form, this undoubtedly adds one for the treatment of process, while also brings impurity and be mixed into；And in process of production, all in water
Carried out in solution, it is difficult to remove sodium, potassium, hydroxyl plasma, process is various, production cycle length（More than ten days）, water consumption it is very big,
The three wastes（Exhaust gas, waste water, the general name of solid waste）Complex disposal process, cost of investment and production cost are all high.
The content of the invention
The utility model provides the device that a kind of rafifinal atomization explosion method prepares high-purity alumina powder, overcomes above-mentioned
The deficiency of the prior art, it can effectively solve existing production high-purity alumina powder technique, and there are preparation time is longer, alumina powder
Pattern is irregular, is readily incorporated the problem of impurity.
The technical solution of the utility model is realized by following measures：A kind of rafifinal atomization explosion method prepares high
The device of pure zirconia aluminium powder, including reactor, aluminium ingot melting plant, air transporting arrangement, the high temperature of aluminium ingot melting plant lower part
Molten aluminum outlet is connected with the inlet on reactor top, the gas outlet of air transporting arrangement and the air inlet phase on reactor top
Connect, igniter is provided with the reactor between inlet and air inlet.
Here is the further optimization and/or improvements to above-mentioned utility model technical solution：
Above-mentioned aluminium ingot melting plant includes heating furnace and bottom is provided with the alumina crucible of through hole, the molten liquid of heating furnace
Outlet is fixedly installed togather and communicates with the upper port of alumina crucible, lower end outlet and the reactor top of alumina crucible
Inlet be connected；Air transporting arrangement includes air accumulator, and air accumulator is connected with reactor upper inlet port.
The device that above-mentioned rafifinal atomization explosion method prepares high-purity alumina powder further includes cyclone separator and bag-type dust
Device, is provided with feed inlet in the middle part of cyclone separator, the feed inlet in the middle part of the discharge port and cyclone separator of reactor lower end
It is connected by the first pipeline, the dust mouth on cyclone separator top is connected with the import of bag filter by the second pipeline
Logical, bag filter right end is communicated with air-introduced machine.
Cooling device is provided with the outside of above-mentioned reactor.
Above-mentioned igniter uses arc ignition device or pulse igniter or flame igniter.
The utility model reasonable and compact in structure, easy to use, reactor, aluminium ingot melting plant, air transporting arrangement, point
The combination settings of fiery device, when making to prepare high-purity alumina powder using the present apparatus, preparation time is shorter, from high-purity aluminium ingot to high-purity
Alumina powder only needs 3 to 4 hours, and the preparation time of the prior art reaches more than ten days；And in the prior art, high pure oxygen
The preparation for changing aluminium powder carries out in aqueous, it is difficult to removes sodium, potassium, hydroxyl plasma, and is prepared using the present apparatus high-purity
During alumina powder, it is not necessary to water, so eliminate the interference of sodium, potassium, hydroxyl plasma, so as to avoid to high purity aluminium oxide
Sodium, potassium, the impurity such as hydroxyl are introduced in powder, that is, improves the purity of pure zirconia aluminium powder, meanwhile, the cost of water is saved, without three
Useless generation, only has a small amount of unreacted air, oxygen discharge, avoids environmental pollution；Furthermore obtained using the present apparatus high-purity
Alumina powder particle diameter distribution is uniform, and pattern is spherical in shape, size tunable, eliminates the prior art to the irregular alumina powder of pattern
Modified or ball milling operation.
Brief description of the drawings
Attached drawing 1 is the main structure diagram of the best embodiment of the utility model.
Coding in attached drawing is respectively：1 is reactor, and 2 be aluminium ingot melting plant, and 3 be air accumulator, and 4 be igniter, 5
It is bag filter for cyclone separator, 6,7 be the first pipeline, and 8 be air-introduced machine, and 9 be the second pipeline.
Embodiment
The utility model, can technical solution according to the present utility model and actual conditions from the limitation of following embodiments
Determine specific embodiment.
In the utility model, for the ease of description, the description of the relative position relation of each component is according to specification
The Butut mode of attached drawing 1 is described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is according to Figure of description 1
Butut direction come it is definite.
The utility model is further described with reference to embodiment and attached drawing：
As shown in Figure 1, the rafifinal atomization explosion method prepare high-purity alumina powder device include reactor 1, aluminium ingot
Melting plant 2, air transporting arrangement, the inlet phase of the outlet of high temperature molten aluminum and 1 top of reactor of 2 lower part of aluminium ingot melting plant
Connection, the gas outlet of air transporting arrangement is connected with the air inlet on 1 top of reactor, anti-between inlet and air inlet
Answer and igniter 4 is provided with device 1.
Reactor 1, aluminium ingot melting plant 2, air transporting arrangement, the combination settings of igniter 4, make to use present apparatus system
During standby high-purity alumina powder, preparation time is shorter, and 3 to 4 hours are only needed to high-purity alumina powder from high-purity aluminium ingot, and existing
The preparation time of technology reaches more than ten days；It is difficult and in the prior art, the preparation of high-purity alumina powder carries out in aqueous
To remove sodium, potassium, hydroxyl plasma, and when preparing high-purity alumina powder using the present apparatus, it is not necessary to water, so eliminating
The interference of sodium, potassium, hydroxyl plasma, so as to avoid the impurity such as sodium, potassium, hydroxyl are introduced into high-purity alumina powder, i.e.,
Improve the purity of pure zirconia aluminium powder, meanwhile, save the cost of water, three wastes generation, only have a small amount of unreacted air,
Oxygen discharges, and avoids environmental pollution；Furthermore the high-purity alumina powder particle diameter distribution obtained using the present apparatus is uniform, pattern is in ball
Shape, size tunable, eliminate the prior art to the modification of pattern irregular alumina powder or the operation of ball milling.
When preparing high-purity alumina powder using the present apparatus, its production equipment is few, therefore equipment investment is few.
Heating furnace uses intermediate-frequency heating furnace.Igniter 4 is using points such as high-voltage pulses, electric arc, oxyhydrogen flame, oxy arcs
Firearm.Reactor 1, aluminium ingot melting plant 2, igniter 4, air transporting arrangement are existing known technology.
Can be according to actual needs, the device work that high-purity alumina powder is prepared to above-mentioned rafifinal atomization explosion method is further excellent
Change or/and improve：
As shown in Figure 1, aluminium ingot melting plant 2 includes heating furnace and bottom is provided with the alumina crucible of through hole, heating
The molten liquid outlet of stove is fixedly installed togather and communicates with the upper port of alumina crucible, the outlet of the lower end of alumina crucible and
The inlet on 1 top of reactor is connected；Air transporting arrangement includes air accumulator 3, air accumulator 3 and 1 upper inlet port of reactor
It is connected.
As shown in Figure 1, rafifinal atomization explosion method prepares the device of high-purity alumina powder and further includes 5 He of cyclone separator
Bag filter 6, feed inlet, discharge port and the cyclone separator 5 of 1 lower end of reactor are provided with the middle part of cyclone separator 5
The feed inlet at middle part is connected by the first pipeline 7, and the dust mouth on 5 top of cyclone separator and the import of bag filter 6 are led to
Cross the second pipeline 9 to be connected, bag filter right end is communicated with air-introduced machine 8.
Start air-introduced machine 10, air-introduced machine 10 collects the nano-alumina powder dirt in cyclone separator 5 to bag-type dust
In device 6, utilized as high value added product.
As needed, the outside of reactor 1 is provided with cooling device.
The cooling medium of cooling device is using water etc..When cooling medium uses water, cooling device is conventionally known cooling
Water circle device.
Cooling device carries out cooling down to the oxidation molten aluminum in reactor 1, is allowed to fast shaping and uniform particle sizes.
As needed, igniter 4 uses arc ignition device or pulse igniter or flame igniter.
Above technical characteristic constitutes the most preferred embodiment of the utility model, it is with stronger adaptability and optimal implementation
Effect, can increase and decrease non-essential technical characteristic, to meet the needs of different situations according to being actually needed.
The use process of the best embodiment of the utility model：High-purity aluminium ingot heats in heating furnace and is melt into high temperature molten aluminum,
After high temperature molten aluminum passes through the through hole of alumina crucible, the uniform drop of grade is formed, drop flows into anti-by inlet
Answer in device 1, compressed air is sent into reactor 1 by air transporting arrangement by air inlet, the compressed air into reactor 1
Dispel drop and be atomized drop, while atomization, drop and oxygen generation oxidation reaction formation high-purity alumina powder are tiny
Drop, high-purity alumina powder fine drop pass through obtain after the indirect cooling of cooling device particle diameter distribution uniformly, spherical morphology
High-purity alumina powder, alumina powder enters cyclone separator 5 and carries out gas solid separation, under alumina powder is under self gravitation effect
Fall, the gas after separation（Oxygen or compressed air）Discharged with nano-alumina powder dirt from 5 top dust mouth of cyclone separator,
And under the action of air-introduced machine 10, nano-alumina powder dirt is inhaled into bag filter 6, the larger alumina powder of particle
Fall into 5 bottom of cyclone separator.
Claims (8)
1. a kind of rafifinal atomization explosion method prepares the device of high-purity alumina powder, it is characterised in that is melted including reactor, aluminium ingot
Melt device, air transporting arrangement, the high temperature molten aluminum outlet of aluminium ingot melting plant lower part is connected with the inlet on reactor top,
The gas outlet of air transporting arrangement is connected with the air inlet on reactor top, in the reactor between inlet and air inlet
It is provided with igniter.
2. rafifinal atomization explosion method according to claim 1 prepares the device of high-purity alumina powder, it is characterised in that aluminium
Ingot melting plant includes heating furnace and bottom is provided with the alumina crucible of through hole, molten liquid outlet and the aluminium oxide earthenware of heating furnace
The upper port of crucible is fixedly installed togather and communicates, and the lower end outlet of alumina crucible is connected with the inlet on reactor top
It is logical；Air transporting arrangement includes air accumulator, and air accumulator is connected with reactor upper inlet port.
3. rafifinal atomization explosion method according to claim 1 or 2 prepares the device of high-purity alumina powder, it is characterised in that
Cyclone separator and bag filter are further included, feed inlet, the discharging of reactor lower end are provided with the middle part of cyclone separator
Mouth is connected with the feed inlet in the middle part of cyclone separator by the first pipeline, the dust mouth on cyclone separator top and bag-type dust
The import of device is connected by the second pipeline, and bag filter right end is communicated with air-introduced machine.
4. rafifinal atomization explosion method according to claim 1 or 2 prepares the device of high-purity alumina powder, it is characterised in that
Cooling device is provided with the outside of reactor.
5. rafifinal atomization explosion method according to claim 3 prepares the device of high-purity alumina powder, it is characterised in that anti-
Answer and cooling device is provided with the outside of device.
6. the rafifinal atomization explosion method according to claim 1 or 2 or 5 prepares the device of high-purity alumina powder, its feature
It is that igniter uses arc ignition device or pulse igniter or flame igniter.
7. rafifinal atomization explosion method according to claim 3 prepares the device of high-purity alumina powder, it is characterised in that point
Fiery device uses arc ignition device or pulse igniter or flame igniter.
8. rafifinal atomization explosion method according to claim 4 prepares the device of high-purity alumina powder, it is characterised in that point
Fiery device uses arc ignition device or pulse igniter or flame igniter.
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| CN107601537A (en) * | 2017-11-01 | 2018-01-19 | 乌鲁木齐市三锐科技有限公司 | Rafifinal atomization explosion method prepares the method and special purpose device of high-purity alumina powder |
| CN109179466A (en) * | 2018-10-09 | 2019-01-11 | 湖南工业大学 | A kind of metallic aluminium prepares the method and production system of ultra-fine schmigel |
| CN111115645A (en) * | 2020-01-21 | 2020-05-08 | 新疆三锐佰德新材料有限公司 | Method and device for preparing spherical silicon dioxide powder |
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|---|---|---|---|---|
| CN107601537A (en) * | 2017-11-01 | 2018-01-19 | 乌鲁木齐市三锐科技有限公司 | Rafifinal atomization explosion method prepares the method and special purpose device of high-purity alumina powder |
| CN107601537B (en) * | 2017-11-01 | 2023-04-18 | 乌鲁木齐市三锐科技有限公司 | Method for preparing high-purity alumina powder by high-purity aluminum atomization fast combustion method and special device |
| CN109179466A (en) * | 2018-10-09 | 2019-01-11 | 湖南工业大学 | A kind of metallic aluminium prepares the method and production system of ultra-fine schmigel |
| CN109179466B (en) * | 2018-10-09 | 2021-09-28 | 湖南工业大学 | Method for preparing superfine corundum powder from metal aluminum |
| CN111115645A (en) * | 2020-01-21 | 2020-05-08 | 新疆三锐佰德新材料有限公司 | Method and device for preparing spherical silicon dioxide powder |
| CN114130494A (en) * | 2021-10-08 | 2022-03-04 | 苏州金仓合金新材料有限公司 | Preparation equipment of aluminum-manganese bronze hollow pipe material and equipment using method |
| CN114130494B (en) * | 2021-10-08 | 2022-09-30 | 苏州金仓合金新材料有限公司 | Preparation equipment of aluminum-manganese bronze hollow pipe material and equipment using method |
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Effective date of registration: 20220112 Address after: 830092 No. 2, No. 418 Quyang street, high tech Zone (new urban area), Urumqi City, Xinjiang Uygur Autonomous Region Patentee after: XINJIANG SANRISEPOWDER NEW MATERIALS CO.,LTD. Address before: 830013 room 208, Chuangye building, No. 682, Tianjin South Road, Xinshi District, Urumqi, Xinjiang Uygur Autonomous Region Patentee before: URUMQI SANRUI TECHNOLOGY CO.,LTD. |
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