CN115893460A - Method and device for reducing separation of oxalate impurities in seed precipitation tank - Google Patents
Method and device for reducing separation of oxalate impurities in seed precipitation tank Download PDFInfo
- Publication number
- CN115893460A CN115893460A CN202211470153.3A CN202211470153A CN115893460A CN 115893460 A CN115893460 A CN 115893460A CN 202211470153 A CN202211470153 A CN 202211470153A CN 115893460 A CN115893460 A CN 115893460A
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- Prior art keywords
- cooling plate
- seed precipitation
- plate type
- precipitation tank
- oxalate
- Prior art date
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- 238000001556 precipitation Methods 0.000 title claims abstract description 39
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000012535 impurity Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000000926 separation method Methods 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 50
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 238000007790 scraping Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 241000579971 Terebridae Species 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 4
- 206010039509 Scab Diseases 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 235000006408 oxalic acid Nutrition 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 231100000241 scar Toxicity 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000012856 packing Methods 0.000 description 8
- 239000012071 phase Substances 0.000 description 6
- 208000032544 Cicatrix Diseases 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000037387 scars Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005185 salting out Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000037390 scarring Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a method and a device for reducing separation of oxalate impurities in a seed precipitation tank, and relates to the field of oxidation production. A method and a device for reducing oxalate impurity separation in a seed precipitation tank comprise a plurality of seed precipitation tanks, wherein each seed precipitation tank comprises a casing, stirring equipment rotationally arranged in the casing, and a driving device arranged on the casing and used for driving the stirring equipment, the stirring equipment is provided with a wall scraping structure, the seed precipitation tanks are sequentially arranged on the ground, each seed precipitation tank is communicated with a cooling plate type through a pipeline, and the arrangement of the temperatures of the cooling plate type is from low to high; the invention aims to solve the technical problems that the precipitation amount of oxalic acid is increased due to a cooling mode in the prior art and the internal scab is cleaned.
Description
Technical Field
The invention relates to the field of oxidation production, in particular to a method and a device for reducing separation of oxalate impurities in a seed precipitation tank.
Background
At present, most imported ores adopted by alumina factories contain high organic matters, and in the dissolving-out process, due to the action of high temperature, the organic matters with high molecular chains are degraded into short molecular chain organic matters in an accelerated manner, and finally the short molecular chain organic matters are continuously degraded into oxalate, and the degradation speed is higher when the temperature is higher. Oxalate as an impurity causes extremely bad influence on product granularity in a seed precipitation system in the production of alumina, and causes product quality reduction. In order to ensure the product quality, the plate-type cooling efficiency of the wide channel for cooling the middle of the front section needs to be reduced, the temperature difference between the grooves is reduced, and the purpose of reducing the salting-out amount of the oxalic acid is achieved. In addition, the generation speed of scars in the seed precipitation tank is accelerated due to the influence of oxalate, so that the scar thickness of the tank wall is 2 to 3 meters thicker than normal, and a serious production accident that the stirring is stopped at equal pressure in a tank collapse is easily caused. Broken scars that break away from get into the board-like material item of formation of cooling and internal division board grinds hourglass etc. leads to the board-like cooling efficiency of cooling to seriously descend, still needs a device to go on degrading the scar of inside simultaneously.
Disclosure of Invention
The invention aims to solve the technical problems that the salting-out amount of oxalic acid is increased due to a cooling mode in the prior art and the internal scab cleaning problem, and provides a method and a device for reducing oxalate impurity precipitation in a seed precipitation tank.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a method and device for reducing oxalate impurity in kind groove and appear, includes several kind grooves, and kind groove includes the casing, rotates the agitated vessel that sets up in the casing inside, installs the drive arrangement who is used for driving agitated vessel on the casing, be provided with on the agitated vessel and scrape the wall structure, several kind groove is installed subaerial in proper order, all has the cooling plate formula through the pipeline intercommunication on every kind groove, and the arrangement of the board-like temperature of several cooling is from low to high.
Further, every be provided with water pump and sieve case between cooling plate formula and the kind groove, the water pump all passes through with the sieve case the pipeline intercommunication.
Further, agitated vessel includes the puddler be connected with drive arrangement, installs the stirring leaf on the puddler, be provided with the mounting groove that is used for the installation to scrape the wall structure on the puddler.
Further, scrape the wall structure including installing the scraper blade on the mounting groove, the one end that the puddler was kept away from to the scraper blade is provided with flexible subassembly, flexible subassembly is including scraping piece, spring, the spring both ends with the scraper blade with scrape the piece and be connected.
Furthermore, the driving device is a first servo motor installed on the casing.
Further, install auger equipment on the shell, auger equipment includes the charge-in pipeline of installing with the shell, install auger shell on charge-in pipeline, rotate the auger rotary rod of assembly on auger shell, install auger blade on auger rotary rod, install the second servo motor on auger shell.
Furthermore, a temperature heating device is arranged in the casing, and a clamping groove which is located on the same horizontal plane with the temperature heating device is formed in the scraper.
Furthermore, a valve is arranged on the feeding pipeline.
Compared with the prior art, the invention provides the method and the device for reducing the separation of oxalate impurities in the seed precipitation tank, and the method and the device have the following beneficial effects.
The device is designed from low to high through a plurality of cooling plate types, so that the problem that the cooling capacity of the front section is high and the cooling capacity of the rear section is low in the original design is solved, the total temperature difference can be guaranteed to be constant, imported ores are higher than domestic ore organic matters, more oxalate can be decomposed in the front stage in the original mode, for example, the design from high to low can affect the granularity of products, scab at the high temperature of the front section can be 2-3 m thicker than normal, partial oxalate can be decomposed in the front stage in the design from low to high, and the separation of oxalate can be reduced when high-temperature heating is carried out later, so that the thickness of the scab at the later stage can be relieved, meanwhile, a detachable wall scraping structure is designed in the device, and the scab at the inner part can be scraped by the wall scraping structure.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows; and will be apparent to those skilled in the art, to a certain extent, upon a study of the following; or may be learned by the practice of the invention.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a first perspective view of the present invention.
Fig. 3 is a second perspective view of the present invention.
Fig. 4 is a schematic view of the structure of the scraping wall of the present invention.
Fig. 5 is a cross-sectional view of the wall scraping structure of the present invention.
FIG. 6 is a schematic view of the seed precipitation tank and cooling plate structure of the present invention.
FIG. 7 is a flow chart of the present invention.
In the figure:
1. a housing; 2. a packing auger housing; 3. a feed conduit; 4. a second servo motor; 5. a first servo motor; 6. a stirring rod;
7. stirring blades; 8. mounting grooves; 9. a temperature heating device; 10. a screw blade; 11. rotating the auger by a rod; 12. a squeegee;
13. a card slot; 14. scraping the block; 15. a spring; 16. a seed separating groove; 17. cooling plate type; 18. a water pump; 19. a screen box; 20. Liquid caustic soda; 21. returning water; 22. returning alkali; 23. and (4) water supply.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a method and a device for reducing oxalate impurity precipitation in seed precipitation tanks, comprising a plurality of seed precipitation tanks 16, wherein each seed precipitation tank 16 comprises a casing 1, stirring equipment rotatably arranged in the casing 1, and a driving device arranged on the casing 1 and used for driving the stirring equipment, a wall scraping structure is arranged on the stirring equipment, the plurality of seed precipitation tanks 16 are sequentially arranged on the ground, each seed precipitation tank 16 is communicated with a cooling plate type 17 through a pipeline, and the temperature arrangement of the plurality of cooling plate type 17 is from low to high.
The method is characterized in that the original used ores are Chinese ores, because the internal organic matters of the domestic ores are few, the precipitated impurities are few, the inner wall scabbing speed is low, but the domestic ores are not enough according to years of mining, the foreign ores need to be purchased as raw materials, the organic matters in the foreign ores are higher than the organic matters of the domestic ores, the scabbing speed is higher when the foreign ores are dissolved, the scabbing speed of the inner wall of a shell is higher than normal at the same time, the quality of products is affected, the original flow is that four seed precipitation grooves 16 are used for decomposing the ores, each seed precipitation groove 16 corresponds to different cooling plate types 17, the original cooling plate types 17 are high-temperature cooling plate types 17 in the first two, the cooling plate types 17 in the second two are low-temperature cooling plate types, the positions of the cooling plate types 17 in the first two and the positions of the cooling plate types 17 in the second two are changed at present, the density of the oxalate precipitated in the first two can be reduced, and the internal scabbing speed can be reduced.
A water pump 18 and a screen box 19 are arranged between each cooling plate 17 and the seed precipitation tank 16, and the water pump 18 is communicated with the screen box 19 through a pipeline.
The shell is provided with a pipeline, water inside the shell is pumped into a cooling plate type 17 through a water pump 18, then the water passes through a middle sieve box 19, the sieve box 19 is 1.5 m long and 0.6 m in diameter, a slide way is manufactured in the sieve box 19, a screen with a detachable pore size of 0.5mm is installed, after material combination scars are filtered, the temperature is reduced through a plate type, meanwhile, a cylindrical screen with the diameter of 800mm and the length of 2000mm is respectively added on an outlet pipeline of the water pump 18, a slag pan and a discharge flow are manufactured at the same time, water quality is filtered, the impurity entering plate type is reduced, the plate type cooling efficiency is improved, meanwhile, the sieve box 19 enters filtered impurities into a trench, a liquid inlet pipe of liquid alkali 20 or mother liquid is arranged between the sieve box 19 and the cooling plate type 17, the liquid inlet pipe is connected with the pipeline in series, meanwhile, a return water 21 and an incoming water 23 are designed on the cooling plate type 17, a discharge position connected with the shell is also arranged on the cooling plate type 17, a liquid outlet pipe of alkali return water or mother liquid is arranged between the discharge position and the cooling plate type 17, the liquid outlet pipe is connected with the pipeline in series, the cooling plate type 17, only the material cooling plate type 17 is provided with a water tank, the water phase, the water tank, the water phase return flow is not provided with the alkali return pipe, the outlet of the alkali fork inlet, the alkali return pipe, the water tank, the alkali fork inlet pipe, the alkali tank, the alkali fork inlet is combined flow, the water phase is combined flow, and the alkali fork inlet, the water tank, the alkali fork inlet, and the alkali fork inlet of the water phase, and the alkali fork inlet are combined flow, and the alkali fork inlet of the alkali fork inlet are combined, and the water phase, and the alkali fork inlet of the water phase.
Meanwhile, the cooling plate type 17 water tank material box needs to be periodically chemically cleaned, and the material box is cleaned by alkali to remove aluminum hydroxide scabs; removing scale through water tank acid washing; or alkali washing can be carried out, and the separated scale is washed out by high-temperature sodium hydroxide. Therefore I factory is outside separately chemical cleaning, through establishing ties workbin and water tank pipeline and transforming, realize carrying out the cluster through high temperature sodium hydroxide and wash, 17 workbin imports of cooling plate type are all installed sieve case 19 additional, the filtering material item scars, regularly place the scar through sieve case 19, reduce and block up the emergence, 18 exports of circulating water pump install sieve case 19 additional, water purification system, slow down aqueous phase speed of scarring, circulating water pond carries out the water replacement through the unqualified water of evaporation, reduce impurity and ion in the circulating water, improve the specific heat capacity, and the heat transfer effect is improved.
The stirring equipment comprises a stirring rod 6 connected with a driving device and a stirring blade 7 installed on the stirring rod 6, wherein an installation groove 8 for installing a wall scraping structure is arranged on the stirring rod 6.
Scrape the wall structure including installing scraper blade 12 on mounting groove 8, scraper blade 12 keeps away from the one end of puddler 6 and is provided with flexible subassembly, and flexible subassembly is including scraping piece 14, spring 15, and spring 15 both ends are connected with scraper blade 12 and scraping piece 14.
This embodiment can install and scrape the wall structure and carry out periodic cleaning to the inner wall because this mode can reduce the inner wall speed of scabbing, but the condition that the scabbing still can appear in the inner wall needs periodic cleaning, and the number of times of clearance can not be very frequent, has reduced working strength.
The driving device is a first servo motor 5 arranged on the machine shell 1.
The packing auger device is arranged on the shell and comprises a feed pipeline 3 arranged with the shell, a packing auger shell 2 arranged on the feed pipeline 3, a packing auger rotating rod 11 rotatably assembled on the packing auger shell 2, packing auger blades 10 arranged on the packing auger rotating rod 11 and a second servo motor 4 arranged on the packing auger shell 2.
A temperature heating device 9 is arranged in the machine shell 1, and a clamping groove 13 which is positioned on the same horizontal plane with the temperature heating device 9 is arranged on the scraping plate 12.
The feed pipe 3 is provided with a valve.
This embodiment can be opened or closed through the valve, when needing to shift next process to inside raw materials, only need open second servo motor 4, auger blade 10 will shift inside raw materials, auger blade 10 can only promote inside ore, and inside rivers are difficult to promote through auger blade 10, and when the inside scar of clearance simultaneously, inside scar also can be put forward through auger blade 10.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. The utility model provides a reduce device that kind intra-groove oxalate impurity of branch was appeared, a serial communication port, including several kind branch groove (16), kind branch groove (16) include casing (1), rotate the agitated vessel that sets up in casing (1) inside, install the drive arrangement who is used for driving agitated vessel on casing (1), be provided with on the agitated vessel and scrape the wall structure, several kind branch groove (16) are installed subaerial in proper order, all have cooling plate formula (17) through the pipeline intercommunication on every kind branch groove (16), and the arrangement of the temperature of several cooling plate formula (17) is from low to high.
2. The method and the device for reducing the separation of oxalate impurities in the seed precipitation tank according to claim 1, characterized in that a water pump (18) and a screen box (19) are arranged between each cooling plate type (17) and the seed precipitation tank (16), and the water pump (18) and the screen box (19) are communicated through the pipeline.
3. The method and the device for reducing the separation of oxalate impurities in the seed precipitation tank according to claim 2, characterized in that the stirring equipment comprises a stirring rod (6) connected with a driving device and a stirring blade (7) arranged on the stirring rod (6), and the stirring rod (6) is provided with an installation groove (8) for installing a wall scraping structure.
4. The method and the device for reducing the separation of oxalate impurities in the seed precipitation tank according to claim 3, characterized in that the wall scraping structure comprises a scraping plate (12) installed on the installation tank (8), one end of the scraping plate (12) far away from the stirring rod (6) is provided with a telescopic assembly, the telescopic assembly comprises a scraping block (14) and a spring (15), and two ends of the spring (15) are connected with the scraping plate (12) and the scraping block (14).
5. A method and apparatus for reducing the precipitation of oxalate impurities in a seed precipitation tank according to claim 4, characterized in that said driving means is a first servomotor (5) mounted on the housing (1).
6. The method and the device for reducing the separation of oxalate impurities in the seed precipitation tank according to claim 5 are characterized in that the shell is provided with an auger device, the auger device comprises a feed pipeline (3) installed with the shell, an auger shell (2) installed on the feed pipeline (3), an auger rotary rod (11) rotatably assembled on the auger shell (2), auger blades (10) installed on the auger rotary rod (11), and a second servo motor (4) installed on the auger shell (2).
7. The method and the device for reducing oxalate impurity separation in the seed precipitation tank according to claim 4, characterized in that a temperature heating device (9) is arranged in the casing (1), and a clamping groove (13) which is positioned on the same horizontal plane as the temperature heating device (9) is formed in the scraper (12).
8. A method and apparatus for reducing the separation of oxalate impurities in a seed precipitation tank according to claim 6, characterized in that the feed pipe (3) is provided with a valve.
9. A method for reducing oxalate impurity precipitation in seed precipitation tanks is provided, wherein the number of the seed precipitation tanks (16) is four, and the temperature of a cooling plate type (17) on each seed precipitation tank (16) is transited from low temperature to high temperature; the cooling plate type (17) on the four seed precipitation grooves (16) are defined as a first cooling plate type, a second cooling plate type, a third cooling plate type and a fourth cooling plate type, wherein the first cooling plate type and the second cooling plate type are low temperatures, and the third cooling plate type and the fourth cooling plate type are high temperatures.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211470153.3A CN115893460B (en) | 2022-11-23 | 2022-11-23 | Method and device for reducing precipitation of oxalate impurities in seed precipitation tank |
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| CN202211470153.3A CN115893460B (en) | 2022-11-23 | 2022-11-23 | Method and device for reducing precipitation of oxalate impurities in seed precipitation tank |
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| CN115893460B CN115893460B (en) | 2024-04-02 |
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