CN201901600U - Sodium aluminate liquor crystallization reactor - Google Patents
Sodium aluminate liquor crystallization reactor Download PDFInfo
- Publication number
- CN201901600U CN201901600U CN2010206266735U CN201020626673U CN201901600U CN 201901600 U CN201901600 U CN 201901600U CN 2010206266735 U CN2010206266735 U CN 2010206266735U CN 201020626673 U CN201020626673 U CN 201020626673U CN 201901600 U CN201901600 U CN 201901600U
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- decomposer
- sodium aluminate
- crystallization reactor
- chute
- fixed
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The utility model discloses a sodium aluminate liquor crystallization reactor, which belongs to a crystallization reaction device and aims to be convenient in manufacture and low in cost, save electric energy and be capable of increasing granularity of aluminum oxide. The sodium aluminate liquor crystallization reactor comprises a decomposer, a discharge chute, at least two discharge tubes and lifting air hoses, the decomposer is a flat-bottom structure, the discharge chute is fixed on the decomposer, the discharge tubes are vertically fixed in the decomposer and communicated with the discharge chute, the lifting air hoses are communicated with the discharge tubes, the discharge chute (8) is communicated with the discharge tubes (3) via a connecting chute (7), the connecting chute (7) is fixed at a position, which is close to the top, in the decomposer (1), the amount of the lifting air hoses (2) is identical to that of the discharge tubes (3), and the lifting air hoses (2) are respectively inserted in the corresponding discharge tubes (3). The sodium aluminate liquor crystallization reactor is large in granularity of products, low in manufacturing cost of equipment and low in power consumption, and is ideal equipment for producing aluminum oxide.
Description
Technical field: the utility model relates to a kind of crystallization reaction device in the alumina industry, relates in particular to a kind of supersaturated sodium aluminate solution and adds the seeded crystallization reaction unit.
Background technology:
At present, supersaturated sodium aluminate solution adds seeded crystallization and produces the cylindrical structural that the reaction unit of aluminium hydroxide mostly is flat straight bucket greatly, utilizes a pipe-line transportation that vertically is installed on the reaction unit wall to go out the reaction product hydrogen alumina slurry.Common this reaction unit is called decomposer, in reaction process, to stir with the mechanical stirrer (being generally five layers of combination leaf oar) of multilayer leaf oar combination, to prevent that the aluminum hydroxide crystals deposit buildup that crystallization reaction produces from causing the deep gouge accident after at the bottom of the decomposer, the blocking-up continuous production.Discover that though this continual violent stirring can prevent aluminum hydroxide crystals precipitation buildup, the shearing force that produces can make the crystalline aluminum hydroxide growth process be destroyed and cause xln refinement once more in the sodium aluminate solution flow field; Cause the finished product aluminum oxide quality grade to improve, the granularity of aluminum oxide does not reach the sandy alumina product that international standard requires all the time between sand shape and powdered intermediateness.In addition, this mechanical stirring device leaf oar reaches tens meters, and not only manufacture difficulty is big, cost is high; And because the stirring load is bigger, every decomposer needs the electric motor of one 75 kilowatts of adapteds to drive the whipping appts rotation incessantly usually throughout the year, so power consumption is very high.
Summary of the invention: at the above-mentioned defective that exists in the prior art, the utility model aim to provide a kind of easily manufactured, cost is low, saves energy, can improve the sodium aluminate solution crystallization reactor of aluminium oxide granule granularity.
To achieve these goals, the utility model is by the following technical solutions: it comprise flat-bottom structure decomposer, be fixed on discharging chute on this decomposer, vertically be fixed on the discharge nozzle that is communicated with this discharging chute in the described decomposer, be communicated with this discharge nozzle carry the material airduct; Discharge nozzle is at least two, and the connection chute near tip position is communicated with each discharge nozzle discharging chute in the decomposer by being fixed on; The material airduct of carrying that quantity is identical with discharge nozzle is inserted in the corresponding discharge nozzle separately.
Connect chute and be arc-shaped structure; Discharge nozzle is uniform distribution in decomposer; Upper fixed at decomposer has agitator, and fixing vaned turning axle is connected with this agitator; The downward-sloping layout of blade.
Compared with the prior art, the utility model is owing to adopted technique scheme, cooperate with the individual layer blade of being located at the bottom with the discharge nozzle more than two or two that is distributed in the decomposer, realized that in decomposer bottom big area evenly puies forward the function of material and transmission slurry, overcome the easily difficult problem of precipitation buildup of bottom.Compare with existing large-scale flat mechanical agitation type decomposer,, therefore alleviated the load of whipping appts greatly, can reduce with electric consumption 30% owing to cancelled many groups blade of arranging along the turning axle multilayer; In addition,, eliminated the powerful shearing force that causes that stirs in the fluid flow fields, therefore be easy to obtain the alumina product of sand shape owing to changed the dynamic conditions of supersaturated sodium aluminate solution crystallization reaction.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
Among the figure: decomposer 1 is carried material airduct 2 discharge nozzles 3 blades 4 turning axles 5 agitators 6 and is connected chute 7 discharging chutes 8
Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
Embodiment 1
In Fig. 1～2, discharging chute 8 is fixed on the decomposer 1 of the straight barrel structure of flat circle, the position that chute 7 is fixed on close top in the decomposer 1 that is connected that is arc-shaped structure with discharging chute 8 connections, three discharge nozzles 3 that vertically are located in this decomposer are fixed on bottom and the connection with it that connects chute 7, the lower port of each discharge nozzle 3 extends downward the bottom of decomposer 1, is inserted with carrying of being connected with gas blower in each discharge nozzle 3 and expects airduct 2.In order to guarantee to carry material evenly, discharge nozzle 3 is uniform distribution in decomposer 1.
Shown in Fig. 1～2, on the identical basis of basic structure and embodiment 1, produce buildup for fear of the bottom at decomposer 1, the utility model can also adopt following structure: be fixed with agitator 6 at the top of decomposer 1, the below of this agitator is the turning axle 5 that is fixed with individual layer blade 4; The upper end of this turning axle is connected with agitator 6, the lower end is arranged on decomposer 1 bottom by bearing.For fear of producing precipitation, blade 4 downward-sloping layouts.
During work, agitator 6 drives blade 4 by turning axle 5 and slowly rotates, and the sodium aluminate solution of being dug by this blade disturbance compiles in the inflow connection chute 7 by discharge nozzle 3 under the effect of carrying material airduct 2, flows out through discharging chute 8 then.The utility model has been owing to increased the quantity of discharge nozzle 3 and has been connected chute 7, and will original many groups stirring rake along the distribution of turning axle multilayer change the individual layer blade 4 of close decomposer 1 bottom into.Therefore, compare, alleviated the load of agitator 1, reduce, improve aluminum oxide grain size with electric consumption 30% with existing machinery stirring-type decomposer.
Claims (7)
1. sodium aluminate solution crystallization reactor, comprise flat-bottom structure decomposer, be fixed on discharging chute on this decomposer, vertically be fixed on the discharge nozzle that is communicated with this discharging chute in the described decomposer, be communicated with this discharge nozzle carry the material airduct; It is characterized in that: discharge nozzle (3) is at least two, and the connection chute (7) near tip position is communicated with each discharge nozzle (3) discharging chute (8) in the decomposer (1) by being fixed on; The material airduct (2) of carrying that quantity is identical with discharge nozzle (3) is inserted in the corresponding discharge nozzle (3) separately.
2. sodium aluminate solution crystallization reactor according to claim 1 is characterized in that: connect chute (7) and be arc-shaped structure.
3. sodium aluminate solution crystallization reactor according to claim 1 and 2 is characterized in that: discharge nozzle (3) is uniform distribution in decomposer (1).
4. sodium aluminate solution crystallization reactor according to claim 1 and 2 is characterized in that: the upper fixed at decomposer (1) has agitator (6), and the turning axle (5) that is fixed with blade (4) is connected with this agitator.
5. sodium aluminate solution crystallization reactor according to claim 3 is characterized in that: the upper fixed at decomposer (1) has agitator (6), and the turning axle (5) that is fixed with blade (4) is connected with this agitator.
6. sodium aluminate solution crystallization reactor according to claim 4 is characterized in that: the downward-sloping layout of blade (4).
7. sodium aluminate solution crystallization reactor according to claim 5 is characterized in that: the downward-sloping layout of blade (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206266735U CN201901600U (en) | 2010-11-26 | 2010-11-26 | Sodium aluminate liquor crystallization reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206266735U CN201901600U (en) | 2010-11-26 | 2010-11-26 | Sodium aluminate liquor crystallization reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201901600U true CN201901600U (en) | 2011-07-20 |
Family
ID=44272200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206266735U Expired - Fee Related CN201901600U (en) | 2010-11-26 | 2010-11-26 | Sodium aluminate liquor crystallization reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201901600U (en) |
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2010
- 2010-11-26 CN CN2010206266735U patent/CN201901600U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20121126 |