CN104209040A - Slurrying device and nano metal oxide powder production equipment comprising slurrying device - Google Patents
Slurrying device and nano metal oxide powder production equipment comprising slurrying device Download PDFInfo
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- CN104209040A CN104209040A CN201410424153.9A CN201410424153A CN104209040A CN 104209040 A CN104209040 A CN 104209040A CN 201410424153 A CN201410424153 A CN 201410424153A CN 104209040 A CN104209040 A CN 104209040A
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Abstract
The invention relates to a slurrying device and nano metal oxide powder production equipment comprising the slurrying device. The slurrying device is used for slurrying colloid. The slurrying device is characterized in that a feeding hole is formed above the slurrying device; the slurrying device comprises a mixing drum and a slurrying tank; the mixing drum comprises a stirrer and a plurality of crushing devices; the stirrer comprises a stirring shaft and a plurality of stirring paddles; the plurality of stirring paddles are arranged on the stirring shaft along the axial direction; one crushing device is arranged between each two stirring paddles; the crushing devices pass through the stirring shaft and are fixedly connected with the inner wall of the slurriyng device; the slurrying tank is communicated with the mixing drum and is arranged below the mixing drum; a plurality of groups of screw rods are arranged inside the slurrying tank, and are used for further extruding and crushing materials; and a plurality of holes are formed in the wall of the slurrying tank to be used for outside flowing of the slurry. Rapid drying of the colloid can be achieved by adopting the slurrying device, oxygen is introduced via air holes which are evenly distributed in a high-temperature region of a combustion chamber, and the material can fully react and combust in the combustion chamber, so that the energy consumption is reduced, meanwhile, the washing and suction filtration links of the colloid are eliminated, and the prepared nano metal oxide powder is excellent in performance.
Description
Technical field
The present invention relates to nano-powder material apparatus field, particularly relate to a kind of for the pulp device of colloid pulp and the production equipment of nanometer metal oxide powder.
Background technology
Nanometer metal oxide powder material is research field very active in current solid physics, materials chemistry, biomedicine.The particle size of nano-powder is the ultrafine dust of nanometer scale (1 ~ 100nm), when the size of powder granule enters nanometer scale, himself will produce quantum size effect, interfacial effect, small-size effect and macro quanta tunnel effect, and thus nanometer metal oxide powder material has broad application prospects in fields such as chemical industry catalysis, electronic ceramics, biomedicine, magnetics.
Along with deepening continuously to nanoparticle and nano materials research, the new method preparing nanometer metal oxide powder material gets more and more, and sums up and can be divided into three major types: solid phase method, liquid phase method and vapor phase method.Wherein the preparation of liquid phase method is various informative, simple to operate, and make each metallic element high degree of dispersion by the liquid phase mixing of reaction raw materials, can prepare nano-powder material under lower reaction temperature and relatively mild chemical environment, main method has microemulsion method, sol-gel process, coprecipitation, hydro-thermal method etc.
Microemulsion method is that multiple immiscible solvent forms emulsion under the effect of surfactant, in microvesicle through nucleation, coalescent, reunite, after heat treatment the method for nano particle.Microemulsion is generally made up of four kinds of components, i.e. surfactant, cosurfactant (being generally fatty alcohol), organic solvent (being generally alkane or cycloalkane) and water, compared with the simple emulsion of thermodynamic instability, it is a kind of thermodynamically stable disperse system.Water-in-oil type (W/O) microemulsion, be nanometer scale space with pond in its reversed phase micelle, the following space is reactor, can prepare the nanoparticle of 1 ~ 100nm, be called Micellar microreactor.The particle that the method obtains is spherical, has the unrivaled advantage of other chemical methodes, but there is production process complexity, the shortcoming that cost is higher simultaneously in the preparation of superfine powder especially nano-powder.
Sol-gel process provides a kind of method of low temperature synthesizing inorganic and organic material, is widely used in the preparation of nanometer metal oxide powder.The predecessor metal alkoxide of the method or non-golden alkoxide, this method is actual is that predecessor is hydrolyzed into colloidal sol under certain condition, then makes gel, drying, by nano-powder obtained after gel under strict conditions heat treatment.The method can reduce synthesis temperature, and in the solution of predecessor, introduces many kinds of metal ions, can prepare composite metal oxide with the form of alkoxide or other salt.Such as, adopt Sol-gel method to prepare M type strontium hexaferrite, nano titanium oxide, particle diameter is less than the BaTiO of 15nm
3, particle diameter is less than the PbTiO of 100nm
3, particle diameter is at the Al of 80 ~ 300nm
2tiO
5deng.The method shortcoming has that production capacity is little, cost of material is high and insalubrity, the time of processing procedure is longer, gel-forming and filtration, washing process are wayward, and powder productive rate is low, it is serious to reunite, impurity is difficult to remove, and is unfavorable for the suitability for industrialized production of the method.
Coprecipitation is the method that liquid-phase chemical reaction synthesis of metal oxide nano-powder adopts the earliest, is to add precipitating reagent in containing multiple cationic solution, makes the method that metal ion precipitates completely.The method cost is lower, and the powder of generation has higher chemical uniformity, and granularity is thinner. and particle size distribution is narrower and have certain pattern.But sediment is generally jelly, washing, filters more difficult; Precipitating reagent is easily mixed into as impurity; During washing, partly precipitated thing dissolves.Therefore this method applicable surface is narrower.Coprecipitation can prepare BaTiO
3, PbTiO
3, ZrO
2powder.With CrO
2for the oxalate precipitation method of crystal seed, prepare La, Ca, Co, Cr doping oxide.
Hydro-thermal method refers in the high-temperature high-voltage reaction system in autoclave, and using water as reaction medium, make indissoluble or insoluble substance dissolves, reaction can be recrystallized.Such as, can a certain proportion of molysite and cobalt salt, under a small amount of acid exists, be dissolved into solution, making mineralizer with sodium hydroxide solution and adjusting pH value of solution is desirable value.Loaded in autoclave by the predecessor of colloid or glue, compactedness is 50%, and turn on agitator, passes into compressed air, reacts under uniform temperature and pressure, and after filtration, washing, compressing tablet after dry, at 773 ~ 873K sintering, obtains nano-powder CoxFe to product
3-XO
4.Metal Ti powder is utilized to be dissolved in H
2o
2alkaline solution generate the peroxide solvent (TiO of Ti
4) character, in different media, carry out hydrothermal treatment consists.Prepare different crystal forms, the TiO of nine kinds of shapes
4nano powder.The shortcoming of this method is equipment complex and expensive, and reaction time is long, and condition is harsher, is difficult to realize large-scale industrial production.
Summary of the invention
The present inventor is by constantly studying and groping, improve and developed a kind of new method---colloid spray burning method, the method take soluble metallic salt as raw material, the configuration aqueous solution, solution transforms is colloid, and colloid is without the need to washing and filtering, and energy rapid draing, obtain nano-powder at a lower temperature, the method can prepare single and multicomponent powder, and powder has the advantages such as particle diameter is little, narrowly distributing, good dispersion, uniform composition.
Specifically, the method is:
(1) solution is configured: dissolved in by soluble metallic salt in water, be configured to single or multiple metal ion solution.After solution dissolves completely, polybasic carboxylic acid complexing agent is added in the metal ion solution configured, adjust ph;
(2) esterification glue: add polyol crosslink agent in step (1) solution, then solution is put into heating water bath, esterification occurs under certain condition, forms transparent colloid;
(3) broken dry: the colloid obtain step (2) and dispersant carry out pulp, obtain the slurry by compression pump conveying; Slurry is carried out be atomized, dry;
(4) oxygenation burning: the dried material Thorough combustion under oxygen effect step (3) obtained, obtains nanometer metal oxide powder;
(5) powder is prepared: collected by charging basket metallic oxide nano powder prepared by step (4).
Wherein, step (1) and (2) also can merge following steps: soluble metallic salt is water-soluble, be made into single or multiple metal ion solution, polybasic carboxylic acid complexing agent and polyol crosslink agent are added in this solution, adjust ph,, there is esterification in heating water bath, forms transparent colloid.
In step (1), described raw material is all soluble metallic salts, comprises metal inorganic and organic salt; Described complexing agent is polybasic carboxylic acid, comprises ethylenediamine tetra-acetic acid, citric acid, glycine, tartaric acid, amino acid, oxalic acid, malic acid, aminotriacetic acid, bicine N-etc.; Described pH value regulator is the alkaline matters such as ammoniacal liquor, ammonium carbonate, urea; Described pH value adjustable range is 3 ~ 10.
In step (2), described crosslinking agent is polyalcohol, comprises ethylene glycol, propane diols, butanediol, glycerine, pentaerythrite etc.; Described esterification reaction temperature is 60 ~ 90 DEG C, and the reaction time is 0.5 ~ 2h.
In step (3), described dispersant is one or more mixtures in white oil, alcohol, kerosene, polyethylene glycol etc.; Described colloid and the volume ratio of dispersant are 100:1 ~ 10.
Rely on above method, the present inventor innovatively devises a kind of pulp device for colloid material and comprises its production equipment of nanometer metal oxide powder, in above step (3) and (4).
Pulp device of the present invention, for colloid pulp, is provided with charging aperture above this pulp device; Pulp device comprises mixing drum and slurrying tank, mixing drum comprises agitator and multiple breaker, agitator comprises shaft and multiple paddle, multiple paddle is located on shaft vertically, be provided with breaker between every two paddles, breaker passes shaft and the inwall of affixed pulp device; Slurrying tank is communicated with mixing drum and is positioned at below it, is inside provided with and organizes screw rod more, in order to further attrition crushing material; The cell wall of slurrying tank is provided with multiple hole, flows out for slurry.
Preferably, described breaker is cutter net or silk screen.
Preferably, described cutter net to be staggered along two or more direction by multiple blade to assemble; The material of described silk screen is iron, copper, aluminium or stainless steel; Mesh size is 0.1 ~ 20mm.
Preferably, described multiple paddle is equidistantly located on this shaft vertically.
Described many group screw rods are arranged in the little mode to rotating between not affecting between two in gap between two.
Described slurrying tank is pyramidal structure, uniform multiple hole on the cell wall of described slurrying tank, and aperture is 0.1 ~ 3mm, and pitch of holes is 0.1 ~ 100mm.
The production equipment of a kind of nanometer metal oxide powder that the present invention provides in addition, it comprises aforesaid pulp device.
Preferably, this production equipment also comprises atomizer, drying tower, combustion chamber, cyclone separator and exhaust gas treating device; Atomizer is positioned at above drying tower, and combustion chamber is positioned at below drying tower, and atomizer is communicated with above drying tower, and combustion chamber is communicated with below drying tower; Pulp device lower end is connected with atomizer top, and bottom, combustion chamber is provided with the first charging basket, and combustion chamber one sidepiece connects the air inlet of cyclone separator by pipeline, and the gas outlet of cyclone separator connects exhaust gas treating device, and the lower end of cyclone separator is provided with the second charging basket; Atomizer has pressure-air air inlet, drying tower has high temperature air air inlet, combustion chamber has oxygen air inlet; Wherein, combustion chamber comprises the thermal treatment zone and high-temperature region, and the in-built heating resistance wire in the thermal treatment zone, high-temperature region ceramic wall is evenly distributed in pore.
Preferably, pump is provided with between described pulp device and atomizer; The pipeline be connected with the oxygen air inlet of the pressure-air air inlet of atomizer, the high temperature air air inlet of drying tower and/or combustion chamber is also provided with air purifier and pump, in addition, on the pipeline be connected with the high temperature air air inlet of drying tower, after air purifier, also heater is provided with.
Described pulp device is made up of mixing drum and slurrying tank two parts.The effect of mixing drum is stirred and promote colloid to make it broken by agitator by breaker (such as cutter net, silk screen), and make broken colloid and dispersant evenly, the material mixed enters slurrying tank by discharging opening simultaneously; The effect of slurrying tank is that the material making to enter is broken further under the effect of many group extruding screws, and finally discharge from cone tank cinclides, taper cell wall is that aperture 0.1 ~ 3mm orifice plate is made, and can ensure that the material diameter after pulp is less than 3mm.Pulp equipment matter is stainless steel, lining teflon equal to material contact surface.
In step (3), described slurry is delivered to atomizer by compression pump; Described atomizer is pressure-air atomizer; Described pressure-air is cold air, and pressure is 1 ~ 10MPa; Described drying tower is heated by high temperature air, and temperature controls at 200 ~ 350 DEG C; Drying time is 0.1 ~ 30s.
In step (4), the burning of dried material is carried out in a combustion chamber, and this combustion chamber comprises the thermal treatment zone and high-temperature region, is ignited rapidly after dried material enters the thermal treatment zone of combustion chamber, in high-temperature region, and Thorough combustion reaction under the effect of oxygen.Better, described Heating Zone Temperature is 400 ~ 800 DEG C; Described oxygen is imported by high-temperature region wall pore, oxygen pressure 1.6 ~ 3.0MPa; Temperature when described high-temperature region works reaches as high as 1200 DEG C.
Better, described combustion chamber main body is refractory ceramics, and shell is made up of carbon steel, to support whole body of heater.The in-built heating resistance wire in the thermal treatment zone; High-temperature region ceramic wall is evenly distributed in the pore of diameter 5mm, and import oxygen by the pressure of 1.6 ~ 3.0MPa, enter material vigorous combustion under oxygen effect of high-temperature region, temperature reaches as high as 1200 DEG C.In combustion chamber, ceramic structures is made up, as zirconia, quartz sand etc. of the material bearing more than 1200 DEG C high temperature.
Colloid has very strong water imbibition, and non-refractory, the therefore general long-time heat preservation at low temperatures of the drying of colloid.Improve the rate of drying of colloid, just need colloid to be broken into less particle.In order to colloid is broken into fine particle, just need to take special method.We utilize pulp device that the colloid mixing dispersant is broken into flowable slurry, and in this slurry, the size of colloid is at below 3mm.This pulp device is made up of mixing drum and slurrying tank two parts, mixing drum is stirred by agitator and promotes colloid and makes it broken by breaker, make simultaneously broken colloid and dispersant even, by discharging opening, material is sent into slurrying tank again, the material entering slurrying tank is broken further under the effect of many group screw rods, and last slurry is discharged from cone tank cinclides.
Atomizer utilizes pressure-air to be broken up by the slurry after fragmentation, aerosol dispersion becomes independent fine particle, and the material after atomization needs by high temperature air heat drying, now as directly adopted HTHP air atomizing, although eliminate the trouble of air access, the dispersant in slurry can be caused to volatilize before slurry aerosol dispersion, cause the sticky connection of colloidal solid contact in sizing material, be unfavorable for dispersion, high temperature can improve the viscosity of colloid itself simultaneously, makes sticky connection more serious.Therefore high pressure cold air can only be adopted respectively to implement atomization, and high temperature air imports drying tower and implements dry method.
Combustor outer casing is steel, lined ceramics, is from top to bottom feeding mouth, the thermal treatment zone, high-temperature region and discharging opening successively.Feeding mouth connects drying tower, heater is had in the thermal treatment zone, can be heated to 800 DEG C, high-temperature region ceramic wall circumference uniform distribution pore, after dry material enters the thermal treatment zone by feeding mouth, due to temperature its burning-point far super, just can burn immediately, more can vigorous combustion when running into the oxygen that pore is discharged in high-temperature region, make high-temperature region temperature rise to more than 1000 DEG C, be enough to ensure the organic matter in material and slaine complete reaction, thus realize just can obtaining nano-powder at a lower temperature.
The invention has the advantages that: adopt the production equipment of pulp device of the present invention and nanometer metal oxide powder can realize the rapid draing of colloid; The pore uniform by combustion chamber high temperature district introduces oxygen, can allow material abundant reactive combustion in combustion chamber, reduces energy consumption, utilizes its oxidisability to make nonmetallic substance in material all be converted into gas simultaneously and discharge, eliminate colloid and wash suction filtration link; The nanometer metal oxide powder of preparation has the advantages such as particle diameter is little, narrowly distributing, good dispersion, uniform composition.
Accompanying drawing explanation
Fig. 1 is the structural representation of pulp device in one embodiment of the invention.
Fig. 2 is the structural representation of the production equipment of nanometer metal oxide powder in one embodiment of the invention.
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the pulp device proposed according to the present invention and its detailed description of the invention of production equipment of nanometer metal oxide powder, structure, feature and effect thereof of comprising it, be described in detail as follows.
Refer to shown in Fig. 1, be the structural representation of pulp device in one embodiment of the invention, pulp device is for the device by colloid substances slip, is provided with charging aperture 10 above pulp device 1, enters for colloid material; Pulp device 1 comprises mixing drum 11 and slurrying tank 12, mixing drum 11 comprises agitator 111 and multiple cutter net 112, agitator 111 comprises shaft 1111 and multiple paddle 1112, multiple paddle 1112 is equidistantly located on shaft 1111 vertically, be provided with cutter net 112 between every two paddles 1112, cutter net 112 passes shaft 1111 and the inwall of affixed pulp device 1; Cutter net 112 is assembled by multiple blade, its assembling that is staggered along two or more direction, mesh size 0.1 ~ 20mm; The quantity of paddle 1112 and cutter net 112 and the arrangement assembling mode of cutter net, mesh size can be selected to arrange according to practical condition flexibly; In the present embodiment, agitator 111 has 4 paddles 1112, is provided with cutter net 112, arranges three cutter nets 112 altogether between every two paddles 1112.
Slurrying tank 12 is communicated with mixing drum 11 and is positioned at below it, inside be provided with many group screw rods 121, its group number and set-up mode can be selected flexibly according to practical condition, preferably, its set-up mode is arrange in the little mode to rotating between not affecting between two in gap between two, in the present embodiment, three groups of screw rods 121 are provided with; The cell wall of slurrying tank 12 is provided with multiple hole, and pitch of holes is 0.1 ~ 100mm (not shown); In the present embodiment, slurrying tank 12 is pyramidal structure, and its taper cell wall is that aperture 0.1 ~ 3mm orifice plate is made, and can ensure that the material diameter after pulp is less than 3mm.
The effect of mixing drum 11 is stirred and promote colloid material to make it broken by agitator 111 by cutter net 112, and broken material enters slurrying tank 12 by the discharging opening below mixing drum 11; The effect of slurrying tank 12 is that the material making to enter is broken further under the effect of many group screw rods 121, finally discharges from cone tank cinclides.In addition, pulp equipment matter is stainless steel, lining teflon equal to material contact surface.
In other embodiments, above-mentioned cutter net 112 also can be replaced by silk screen, and this silk screen is namely for such as, to be interwoven by many iron (also can be other materials that those skilled in the art know, copper, aluminium, stainless steel etc.) silk.
Referring to shown in Fig. 2, is the structural representation of the production equipment of nanometer metal oxide powder in one embodiment of the invention, comprises pulp device 1, atomizer 2, drying tower 3, combustion chamber 4, cyclone separator 5 and air purifier 6; Atomizer 2 is positioned at above drying tower 3, and combustion chamber 4 is positioned at below drying tower 3, and atomizer 2 is communicated with above drying tower 3, and combustion chamber 4 is communicated with below drying tower; Pulp device 1 lower end is connected with atomizer 2 top, bottom, combustion chamber 4 is provided with the first charging basket 81, combustion chamber 4 one sidepiece connects the air inlet 51 of cyclone separator 5 by pipeline, and the gas outlet of cyclone separator 5 connects air purifier 6, and the lower end of cyclone separator 5 is provided with the second charging basket 82; Atomizer 2 has pressure-air air inlet 21, drying tower 3 has high temperature air air inlet 31, combustion chamber 4 has oxygen air inlet 41.For convey materials, between pulp device 1 and atomizer 2, be provided with pump 7.
Preferably, the pipeline be connected with the oxygen air inlet of the pressure-air air inlet 21 of atomizer 2, the high temperature air air inlet 31 of drying tower 3 and/or combustion chamber 4 is also provided with air purifier and pump (not shown), in addition, on the pipeline be connected with the high temperature air air inlet 31 of drying tower 3, after air purifier, be also provided with heater (not shown), for adding hot-air.
Combustion chamber 4 comprises the thermal treatment zone and high-temperature region (not shown), the in-built heating resistance wire in the thermal treatment zone; High-temperature region ceramic wall is evenly distributed in the pore of diameter 5mm, and oxygen enters.
Combustor outer casing is steel, lined ceramics, the thermal treatment zone can be heated to 800 DEG C, high-temperature region ceramic wall circumference uniform distribution pore, after dry material enters the thermal treatment zone by feeding mouth, due to temperature its burning-point far super, just can burn immediately, more can vigorous combustion when running into the oxygen that pore is discharged in high-temperature region, make high-temperature region temperature rise to more than 1000 DEG C, be enough to ensure the organic matter in material and slaine complete reaction.The nanometer metal oxide powder major part produced enters charging basket, enters cyclone separator on a small quantity with air.
Be further described below in conjunction with the concrete operation principle of production instance to above equipment.
To prepare nano tin-oxide powder, specific as follows:
(1) solution is configured: dissolved in by butter of tin in water, be configured to the aqueous solution.After solution dissolves completely, citric acid is added in the metal ion solution configured, ammoniacal liquor adjust ph to 4.
(2) esterification glue: add ethylene glycol in step (1) solution, then solution is put into heating water bath to 80 DEG C, after 1h, esterification occurs, forms transparent colloid.
(3) broken dry: the colloid obtain step (2) and dispersant white oil by volume 100:6 add in the mixing drum 11 of pulp device 1 via the charging aperture 10 of pulp device 1, being stirred by agitator 111 and promoting colloid makes it broken by cutter net 112, simultaneously broken colloid mixes with dispersant white oil, and the material mixed enters slurrying tank 12 by the discharging opening below mixing drum 11; In slurrying tank 12, material is broken further by the extruding of many group screw rods 121, and finally discharge from slurrying tank cinclides, aperture is set to 0.1 ~ 3mm, can ensure that the material diameter after pulp is less than 3mm.
The slurry of discharging from slurrying tank is delivered to atomizer 2 by high-pressure pump 7, and utilize the pressure-air of 8MPa to be atomized, the rapid draing in drying tower 3 of the material after atomization, now in drying tower, high-temperature gas is 300 DEG C.
(4) oxygenation burning: it is take fire behind the thermal treatment zone of 500 DEG C that dry material enters combustion chamber 4 temperature, under the effect of oxygen, Thorough combustion reaction, makes high-temperature region be in higher temperature about 1000 DEG C.Material under high temperature decomposes completely, and wherein tin element is combined with oxygen and generates Nano granules of stannic oxide, and other material is then converted into gas and is absorbed completely by exhaust gas treating device 6.
(5) powder is prepared: tin oxide nano-powder prepared by step (4) is collected by the first charging basket 81, gas doping solid particle after burning enters cyclone separator 5 via the outlet of combustion chamber sidepiece, gas, solid separation is realized in cyclone separator 5, Nano granules of stannic oxide after separation is collected by the second charging basket 82, and the gas after separation is discharged by exhaust blower 9 after exhaust gas treating device 6 processes.
It should be noted that, pulp device of the present invention is not limited to the preparation being applied to nanometer metal oxide powder, and also can be applied to other needs to carry out in the production of pulp material.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a pulp device, for colloid pulp, is characterized in that being provided with charging aperture above this pulp device; Pulp device comprises mixing drum and slurrying tank, mixing drum comprises agitator and multiple breaker, agitator comprises shaft and multiple paddle, multiple paddle is located on shaft vertically, be provided with breaker between every two paddles, breaker passes shaft and the inwall of affixed pulp device; Slurrying tank is communicated with mixing drum and is positioned at below it, is inside provided with and organizes screw rod more, in order to further attrition crushing material; The cell wall of slurrying tank is provided with multiple hole, flows out for slurry.
2. pulp device as claimed in claim 1, is characterized in that described breaker is cutter net or silk screen.
3. pulp device as claimed in claim 2, is characterized in that described cutter net to be staggered along two or more direction by multiple blade to assemble; The material of described silk screen is iron, copper, aluminium or stainless steel; Mesh size 0.1 ~ 20mm.
4. pulp device as claimed in claim 1, is characterized in that described multiple paddle is equidistantly located on this shaft vertically.
5. pulp device as claimed in claim 1, it is characterized in that the quantity of described paddle is four, the quantity of cutter net is three, and screw rod is three groups.
6. pulp device as claimed in claim 1, is characterized in that described many group screw rods are arranged in the little mode to rotating between not affecting between two in gap between two.
7. pulp device as claimed in claim 1, it is characterized in that described slurrying tank is pyramidal structure, uniform multiple hole on the cell wall of described slurrying tank, and aperture is 0.1 ~ 3mm, pitch of holes is 0.1 ~ 100mm.
8. a production equipment for nanometer metal oxide powder, is characterized in that the pulp device comprised described in any one of claim 1-7.
9. the production equipment of nanometer metal oxide powder as claimed in claim 8, characterized by further comprising atomizer, drying tower, combustion chamber, cyclone separator and exhaust gas treating device; Atomizer is positioned at above drying tower, and combustion chamber is positioned at below drying tower, and atomizer is communicated with above drying tower, and combustion chamber is communicated with below drying tower; Pulp device lower end is connected with atomizer top, and bottom, combustion chamber is provided with the first charging basket, and combustion chamber one sidepiece connects the air inlet of cyclone separator by pipeline, and the gas outlet of cyclone separator connects exhaust gas treating device, and the lower end of cyclone separator is provided with the second charging basket; Atomizer has pressure-air air inlet, drying tower has high temperature air air inlet, combustion chamber has oxygen air inlet; Wherein, combustion chamber comprises the thermal treatment zone and high-temperature region, and the in-built heating resistance wire in the thermal treatment zone, high-temperature region ceramic wall is evenly distributed in pore.
10. the production equipment of nanometer metal oxide powder as claimed in claim 9, is characterized in that being provided with pump between described pulp device and atomizer; The pipeline be connected with the oxygen air inlet of the pressure-air air inlet of atomizer, the high temperature air air inlet of drying tower and/or combustion chamber is also provided with air purifier and pump, in addition, on the pipeline be connected with the high temperature air air inlet of drying tower, after air purifier, also heater is provided with.
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| CN107971073A (en) * | 2017-12-28 | 2018-05-01 | 郑州赫恩电子信息技术有限公司 | A kind of construction waste crushing and screening equipment easy to cleaning |
| CN108325416A (en) * | 2018-04-01 | 2018-07-27 | 中鸿纳米纤维技术丹阳有限公司 | A kind of aeroge aging equipment |
| CN109482083A (en) * | 2018-11-29 | 2019-03-19 | 刘伟 | A kind of building coating mixing plant that mixing effect is good |
| CN111729552A (en) * | 2020-06-22 | 2020-10-02 | 抚州市鹤达实业有限公司 | Beating device for starch warp |
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