CN220919183U - Sodium fluosilicate pretreatment device and sodium fluosilicate production equipment - Google Patents
Sodium fluosilicate pretreatment device and sodium fluosilicate production equipment Download PDFInfo
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- CN220919183U CN220919183U CN202322482576.3U CN202322482576U CN220919183U CN 220919183 U CN220919183 U CN 220919183U CN 202322482576 U CN202322482576 U CN 202322482576U CN 220919183 U CN220919183 U CN 220919183U
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 45
- 239000011734 sodium Substances 0.000 title claims abstract description 45
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 136
- 239000002002 slurry Substances 0.000 claims abstract description 80
- 230000008719 thickening Effects 0.000 claims abstract description 72
- 238000005406 washing Methods 0.000 claims abstract description 57
- 238000002425 crystallisation Methods 0.000 claims abstract description 40
- 230000008025 crystallization Effects 0.000 claims abstract description 40
- 238000003756 stirring Methods 0.000 claims description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 20
- -1 sodium fluorosilicate Chemical compound 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 abstract 2
- 235000013024 sodium fluoride Nutrition 0.000 abstract 1
- 239000011775 sodium fluoride Substances 0.000 abstract 1
- 239000013078 crystal Substances 0.000 description 28
- 239000002253 acid Substances 0.000 description 21
- 239000012535 impurity Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 239000000741 silica gel Substances 0.000 description 12
- 229910002027 silica gel Inorganic materials 0.000 description 12
- 159000000000 sodium salts Chemical class 0.000 description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 6
- 239000012452 mother liquor Substances 0.000 description 6
- 229910052938 sodium sulfate Inorganic materials 0.000 description 6
- 235000011152 sodium sulphate Nutrition 0.000 description 6
- 238000000151 deposition Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000008021 deposition Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Silicon Compounds (AREA)
Abstract
The application provides a sodium fluosilicate pretreatment device and sodium fluosilicate production equipment. The sodium fluosilicate pretreatment device comprises a reaction crystallization mechanism, a first thickening mechanism, a slurry washing mechanism and a second thickening mechanism, wherein the top of the first thickening mechanism is communicated with the bottom of the reaction crystallization mechanism through a first pipeline piece, the bottom of the first thickening mechanism is communicated with the top of the slurry washing mechanism through a second pipeline piece, one side of the slurry washing mechanism is communicated with the top of the second thickening mechanism through a third pipeline piece, the second thickening mechanism comprises a first rack, a first barrel and a washing pipeline, the third pipeline piece is arranged on the first rack and communicated with the first barrel, the first barrel and the washing pipeline are arranged on the first rack, and the washing pipeline is positioned above the first barrel, so that slurry passes through the washing operation of the slurry washing mechanism and the second thickening mechanism, and the product quality of sodium fluoride is improved.
Description
Technical Field
The utility model relates to the field of chemical product production, in particular to a sodium fluosilicate pretreatment device and sodium fluosilicate production equipment.
Background
Sodium fluosilicate is widely applied in various industries, and recently, due to the explosive development of new energy electric vehicles, the demand for automobile power batteries is increasing at home and abroad, wherein lithium iron phosphate batteries are widely applied to electric vehicles of various vehicle enterprises with higher safety and longer cycle life. Because industrial phosphoric acid is an important intermediate product for preparing lithium iron phosphate, and fluosilicic acid is taken as a byproduct of phosphoric acid, the yield is also greatly increased, the preparation of sodium fluosilicate by utilizing industrial fluosilicic acid is an important application of industrial phosphoric acid byproduct fluosilicic acid, and compared with other fluoride engineering, the device for producing sodium fluosilicate has less investment and lower cost.
For example, chinese patent No. 201720953200.8 discloses an apparatus for preparing sodium fluosilicate, comprising fluosilicic acid storage tank, sodium sulfate solution storage tank, reaction crystallization tank, and centrifuge connected by pipeline; the liquid outlet of the fluosilicic acid storage tank is communicated with the reaction crystallization tank through a fluosilicic acid infusion tube; the liquid outlet of the sodium sulfate solution storage tank is communicated with the reaction crystallization tank through a sodium sulfate infusion tube; and a discharge hole of the reaction crystallization tank is communicated with a feed inlet of the centrifugal machine through a sodium fluosilicate slurry pipe.
However, the structural design of the device for preparing sodium fluosilicate has the following problems in the use process:
The fluosilicic acid and sodium sulfate solution of the device are conveyed into a reaction crystallization tank through a pipeline to react to generate sodium fluosilicate crystals, and are separated by a centrifugal machine and dried to form a finished product, but because silica gel and other crystal impurities exist in the fluosilicic acid and sodium sulfate solution during the reaction, the device does not separate and remove the silica gel and other crystal impurities, so that the generated sodium fluosilicate impurities are more, namely the sodium fluosilicate has lower quality.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art and provide a sodium fluosilicate pretreatment device and sodium fluosilicate production equipment which can separate and remove silica gel and other crystal impurities so as to produce sodium fluosilicate with higher quality.
The aim of the utility model is realized by the following technical scheme:
A sodium fluorosilicate pretreatment device comprising:
The slurry washing device comprises a reaction crystallization mechanism, a first thickening mechanism, a slurry washing mechanism and a second thickening mechanism, wherein the top of the first thickening mechanism is communicated with the bottom of the reaction crystallization mechanism through a first pipeline piece, and the bottom of the first thickening mechanism is communicated with the top of the slurry washing mechanism through a second pipeline piece;
The second thickening mechanism comprises a first frame, a first barrel and a washing pipeline, wherein one side of the slurry washing mechanism is communicated with the top of the first barrel through a third pipeline piece, so that materials sequentially flow through the reaction crystallization mechanism, the first thickening mechanism, the slurry washing mechanism and the second thickening mechanism, the first barrel and the washing pipeline are both arranged on the first frame, and the washing pipeline is positioned above the first barrel.
In one embodiment, the washing pipeline comprises a water inlet part and an annular spraying part which are communicated, the annular spraying part is installed on the first frame, and a plurality of water outlet holes which are arranged at intervals are formed in one side, adjacent to the first cylinder, of the annular spraying part.
In one embodiment, the second thickening mechanism further comprises a first tooth-shaped overflow weir and a first stirring assembly, the first tooth-shaped overflow weir is mounted at the end part of the inner wall of the first barrel, a first overflow groove is formed by the first tooth-shaped overflow weir and the inner wall of the first barrel together, a first overflow port is formed in the first barrel, and the first overflow port is communicated with the first overflow groove;
The first stirring assembly comprises a first motor and a first stirring piece, the first motor is installed on the first frame, the power output end of the first motor is connected with the first stirring piece, and the stirring action end of the first stirring piece is located in the first barrel.
In one embodiment, the first thickening mechanism comprises a second frame, a second cylinder, a second tooth-shaped overflow weir and a second stirring assembly, wherein the second cylinder is installed on the second frame, the first pipeline piece is installed on the second frame and communicated with the second cylinder, one end of the second pipeline piece is communicated with the bottom of the second cylinder, the second tooth-shaped overflow weir is installed at the end part of the inner wall of the second cylinder, a second overflow groove is formed by the second tooth-shaped overflow weir and the inner wall of the second cylinder together, and a second overflow port is formed in the second cylinder and communicated with the second overflow groove;
The second stirring assembly comprises a second motor and a second stirring piece, the second motor is installed on the second frame, the power output end of the second motor is connected with the second stirring piece, and the stirring action end of the second stirring piece is located in the second cylinder.
In one embodiment, the slurry washing mechanism comprises a third cylinder, a third stirring assembly and a slurry extractor, one end of the second pipeline member is communicated with the third cylinder, the third stirring assembly comprises a third motor and a third stirring member, the third motor is installed on the third cylinder, the power output end of the third motor is connected with the third stirring member, one end of the slurry extractor is communicated with the third cylinder, and one side of the slurry extractor is communicated with the third pipeline member.
In one embodiment, a liquid level device is arranged in the third cylinder, and electric valves are arranged at the bottom of the first thickening mechanism and the bottom of the reaction crystallization mechanism, and each electric valve is electrically connected with the liquid level device.
In one embodiment, the reaction crystallization mechanism comprises a fourth cylinder, a fourth stirring assembly and a third frame, the fourth cylinder is mounted on the third frame, the fourth stirring assembly comprises a fourth motor and a fourth stirring piece, the fourth motor is mounted on the third frame, the power output end of the fourth motor is connected with the fourth stirring piece, and one end of the first pipeline piece is communicated with the bottom of the fourth cylinder.
In one embodiment, the reaction crystallization mechanism further comprises a tooth-shaped distributor and a baffle, wherein the periphery of the tooth-shaped distributor is connected with the fourth cylinder, and the baffle is connected with the tooth-shaped distributor, so that the baffle and the tooth-shaped distributor form a first material groove and a second material groove which are arranged at intervals together.
In one embodiment, the reaction crystallization mechanism further comprises a central cylinder, wherein the central cylinder is positioned inside the fourth cylinder and connected with the fourth cylinder, and the acting end of the fourth stirring piece is positioned inside the central cylinder.
The sodium fluosilicate production equipment comprises the sodium fluosilicate pretreatment device in any embodiment.
Compared with the prior art, the utility model has at least the following advantages:
According to the sodium fluosilicate pretreatment device, fluosilicic acid and sodium salt are fully contacted and react in the reaction crystallization mechanism to generate crystals, then slurry flows through the first pipeline piece to the first thickening mechanism to enable crystallization crystal nuclei to be increased in the first thickening mechanism, then slurry flows through the second pipeline piece to the slurry washing mechanism, process water is added in the slurry washing mechanism to wash silica gel and other crystal impurities in the slurry, then the slurry flows through the third pipeline piece to the second thickening mechanism to enable the crystallization crystal nuclei to further grow in the second thickening mechanism, meanwhile, process water can be added into the first barrel through the washing pipeline to further wash the silica gel and other crystal impurities in the slurry, and the quality of sodium fluosilicate is improved through the washing operation of the slurry washing mechanism and the second thickening mechanism.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a sodium fluorosilicate pretreatment apparatus according to one embodiment;
FIG. 2 is a schematic structural view of a second thickening mechanism of the sodium fluorosilicate pretreatment apparatus shown in FIG. 1;
FIG. 3 is a cross-sectional view of a second thickening mechanism of the sodium fluorosilicate pretreatment device shown in FIG. 2;
FIG. 4 is a schematic structural view of a first thickening mechanism of the sodium fluorosilicate pretreatment device shown in FIG. 1;
FIG. 5 is a schematic view of the slurry washing mechanism of the sodium fluorosilicate pretreatment device shown in FIG. 1;
FIG. 6 is a sectional view showing the structure of a reaction crystallization mechanism of the sodium fluorosilicate pretreatment apparatus shown in FIG. 1.
Reference numerals: 100-reaction crystallization mechanism; 200-a first thickening mechanism; 300-a slurry washing mechanism; 400-a second thickening mechanism; 500-a first pipe element; 600-a second conduit member; 700-third piping member; 410-a first rack; 420-a first cylinder; 430-washing the pipeline; 431-water inlet part; 432-an annular spray portion; 440-a first toothed overflow weir; 450-a first stirring assembly; 421-a first overflow; 451-a first motor; 452-a first stirring member; 210-a second rack; 220-a second cylinder; 230-a second toothed overflow weir; 240-a second stirring assembly; 231-a second overflow trough; 241-a second motor; 242-a second stirring member; 310-a third cylinder; 320-a third stirring assembly; 330-a slurry extractor; 321-a third motor; 322-third stirring piece; 800-an electric valve; 110-a fourth cylinder; 120-fourth stirring assembly; 130-a third rack; 121-fourth motor; 122-fourth stirring piece; 140-tooth profile distributor; 150-a separator; 151-a first material trough; 152-a second material trough; 160-a central cylinder.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
In order to better understand the technical scheme and beneficial effects of the present application, the following describes the present application in further detail with reference to specific embodiments:
As shown in fig. 1 to 3, the sodium fluosilicate pretreatment device 10 of an embodiment includes a reaction crystallization mechanism 100, a first thickening mechanism 200, a slurry washing mechanism 300 and a second thickening mechanism 400, wherein the top of the first thickening mechanism 200 is communicated with the bottom of the reaction crystallization mechanism 100 through a first pipe member 500, the bottom of the first thickening mechanism 200 is communicated with the top of the slurry washing mechanism 300 through a second pipe member 600, the second thickening mechanism 400 includes a first frame 410, a first cylinder 420 and a washing pipe 430, one side of the slurry washing mechanism 300 is communicated with the top of the first cylinder 420 through a third pipe member 700, so that materials sequentially flow through the reaction crystallization mechanism 100, the first thickening mechanism 200, the slurry washing mechanism 300 and the second thickening mechanism 400, the first cylinder 420 and the washing pipe 430 are all installed on the first frame 410, and the washing pipe 430 is located above the first cylinder 420, so that process water is added into the first cylinder 420 through the washing pipe 430, and silica gel and other crystal impurities in the slurry are washed.
In this embodiment, fluosilicic acid and sodium salt (sodium sulfate or sodium chloride) enter the reaction crystallization mechanism 100 to be fully contacted and reacted to generate crystals, and sodium fluosilicate slurry is transported to the first thickening mechanism 200 and the second thickening mechanism 400 through pipelines respectively, so that crystal nuclei are further increased in the first thickening mechanism 200 and the second thickening mechanism 400, and simultaneously the slurry is washed by using process water in the slurry washing mechanism 300 and the second thickening mechanism 400, so that silica gel and other crystal impurities floating in the slurry are washed, and further the product quality of sodium fluosilicate is improved. Further, the slurry is transported from the second thickening mechanism 400 to a centrifuge in the next process through a pipe for solid-liquid separation. It will be appreciated that the reactive crystallization mechanism 100, the first thickening mechanism 200, and the second thickening mechanism 400 are all made of PVC (rigid polyvinyl chloride) material due to the relatively high corrosiveness of fluosilicic acid.
In the sodium fluosilicate pretreatment device 10, fluosilicic acid and sodium salt are fully contacted and reacted in the reaction crystallization mechanism 100 to generate crystals, then slurry flows to the first thickening mechanism 200 through the first pipeline member 500, crystal nuclei are increased in the first thickening mechanism 200, then slurry flows to the slurry washing mechanism 300 through the second pipeline member 600, process water is added in the slurry washing mechanism 300 at this time to wash silica gel and other crystal impurities in the slurry, then the slurry flows to the second thickening mechanism 400 through the third pipeline member 700, so that the crystal nuclei further grow in the second thickening mechanism 400, and meanwhile, process water can be added into the first cylinder 420 through the washing pipeline 430 to further wash silica gel and other crystal impurities in the slurry, and the quality of sodium fluosilicate is improved through the washing operation of the slurry washing mechanism 300 and the second thickening mechanism 400.
As shown in fig. 2, in one embodiment, the washing pipe 430 includes a water inlet portion 431 and an annular spraying portion 432 that are connected, the annular spraying portion 432 is mounted on the first frame 410, and a plurality of water outlet holes (not shown) are formed in a side of the annular spraying portion 432 adjacent to the first cylinder 420 at intervals.
It can be appreciated that the water inlet 431 is communicated with the water supply device, so that the process water flows through the annular spraying portion 432 by the water inlet 431, and is sprayed into the slurry in the lower first cylinder 420 through the water outlet of the annular spraying portion 432.
As shown in fig. 2 and 3, in one embodiment, the second thickening mechanism 400 further includes a first toothed overflow weir 440 and a first stirring assembly 450, the first toothed overflow weir 440 is mounted at an end of the inner wall of the first cylinder 420, a first overflow groove 441 is formed by the first toothed overflow weir 440 and the inner wall of the first cylinder 420 together, the first cylinder 420 is provided with a first overflow port 421, and the first overflow port 421 is communicated with the first overflow groove 441;
The first stirring assembly 450 comprises a first motor 451 and a first stirring member 452, the first motor 451 is mounted on the first frame 410, a power output end of the first motor 451 is connected with the first stirring member 452, and a stirring action end of the first stirring member 452 is located inside the first cylinder 420.
It can be appreciated that the top of the inner wall of the first cylinder 420 is provided with a first toothed overflow weir 440, when the mother liquor flows through the first toothed overflow weir 440, large-particle sodium fluosilicate crystals are blocked in front of the first toothed overflow weir 440, so that the solid content of the mother liquor flowing into the first overflow trough 441 is small, resource waste is avoided, and meanwhile, the mother liquor in the first overflow trough 441 flows through the collecting device through the first overflow port 421. Further, because the sodium fluorosilicate slurry has a high solid content, the first motor 451 drives the first stirring member 452 to stir in the first cylinder 420 in order to prevent material deposition while allowing sufficient contact reaction between the fluorosilicic acid and sodium salt.
As shown in fig. 1 and 4, in one embodiment, the first thickening mechanism 200 includes a second frame 210, a second cylinder 220, a second toothed overflow weir 230, and a second stirring assembly 240, where the second cylinder 220 is mounted on the second frame 210, the first pipe 500 is mounted on the second frame 210 and is communicated with the second cylinder 220, one end of the second pipe 600 is communicated with the bottom of the second cylinder 220, the second toothed overflow weir 230 is mounted on an end of an inner wall of the second cylinder 220, a second overflow trough 231 is formed by the second toothed overflow weir 230 and the inner wall of the second cylinder 220 together, and a second overflow port is opened on the second cylinder 220 and is communicated with the second overflow trough 231;
The second stirring assembly 240 includes a second motor 241 and a second stirring member 242, the second motor 241 is mounted on the second rack 210, a power output end of the second motor 241 is connected with the second stirring member 242, and a stirring action end of the second stirring member 242 is located inside the second cylinder 220.
It will be appreciated that the top of the inner wall of the second cylinder 220 is provided with a second toothed overflow weir 230, and when the mother liquor flows through the second toothed overflow weir 230, large-sized sodium fluosilicate crystals are blocked in front of the second toothed overflow weir 230, so that the solid content of the mother liquor flowing into the second overflow trough 231 is small, resource waste is avoided, and the mother liquor in the second overflow trough 231 flows through the collecting device through the second overflow port. Further, because the sodium fluosilicate slurry has higher solid content, in order to prevent the material from depositing and simultaneously make fluosilicic acid and sodium salt fully contact and react, the second motor 241 drives the second stirring piece 242 to stir in the second cylinder 220.
As shown in fig. 1 and 5, in one embodiment, the slurry washing mechanism 300 includes a third cylinder 310, a third stirring assembly 320, and a slurry extractor 330, one end of the second pipe member 600 is in communication with the third cylinder 310, the third stirring assembly 320 includes a third motor 321 and a third stirring member 322, the third motor 321 is mounted on the third cylinder 310, a power output end of the third motor 321 is connected with the third stirring member 322, one end of the slurry extractor 330 is in communication with the third cylinder 310, and one side of the slurry extractor 330 is in communication with the third pipe member 700.
It will be appreciated that the slurry passes through the reactive crystallization mechanism 100 and the first thickening mechanism 200 and then flows through the third cylinder 310, and at this time, process water is added to the third cylinder 310 to wash silica gel and other crystal impurities in the slurry. Further, since the sodium fluosilicate slurry has a high solid content, deposition is likely to occur when the flow rate is lower than the critical flow rate, and thus the third stirring member 322 is provided in the third cylinder 310, and the third stirring member 322 is rotated and stirred by the third motor 321 to prevent deposition of the slurry in the third cylinder 310. In this embodiment, slurry extractor 330 is a slurry pump by which slurry within third cylinder 310 is extracted into second thickening mechanism 400.
As shown in fig. 4, 5 and 6, in one embodiment, a liquid level device (not shown) is disposed inside the third cylinder 310, and electric valves 800 are disposed at the bottom of the first thickening mechanism 200 and the bottom of the reaction crystallization mechanism 100, and each electric valve 800 is electrically connected to the liquid level device.
It can be understood that the third cylinder 310 is internally provided with a liquid level device, the electric valve 800 at the bottom of the first thickening mechanism 200 and the electric valve 800 of the reaction crystallization mechanism 100 are electrically connected with the liquid level device, when the reaction crystallization mechanism 100 and the first thickening mechanism are in misoperation or the equipment is in failure to cause a certain blockage or the flow suddenly becomes large, the liquid level of the slurry washing tank can be changed, and if the liquid level is higher than the highest alarm line, the two electric valves 800 are closed or the flow is reduced, so that the liquid level in the third cylinder 310 is reduced. Further, the liquid inlet end of the slurry extractor 330 is also provided with an electric valve 800, the electric valve 800 is also electrically connected with the liquid level device, when the liquid level in the third cylinder 310 is lower than the lowest alarm line, the electric valve 800 of the slurry extractor 330 is closed to stop conveying the slurry in the third cylinder 310 to the second thickening mechanism 400, and simultaneously, the third motor 321 is started to drive the third stirring piece 322 to stir, so that the slurry extractor 330 is prevented from being blocked by the residue deposition in the third cylinder 310.
It should be noted that, the electrical connection between the electric valve 800 and the liquid level device belongs to the prior art, and the circuit control method of the liquid level device and the electric valve 800 is not in the protection scope of the present application, and the present application only protects the positional relationship and the connection manner of the electric valve 800 and the liquid level device.
As shown in fig. 6, in one embodiment, the reaction crystallization mechanism 100 includes a fourth cylinder 110, a fourth stirring assembly 120 and a third frame 130, the fourth cylinder 110 is mounted on the third frame 130, the fourth stirring assembly 120 includes a fourth motor 121 and a fourth stirring member 122, the fourth motor 121 is mounted on the third frame 130, a power output end of the fourth motor 121 is connected to the fourth stirring member 122, and one end of the first pipe member 500 is communicated with the bottom of the fourth cylinder 110.
It will be appreciated that the fluorosilicic acid and sodium salt are contacted in the fourth cylinder 110 while the fourth stirring member 122 is driven by the fourth motor 121 to stir the fluorosilicic acid and sodium salt sufficiently to contact and react, and the crystals and slurry produced by the reaction flow into the first thickening mechanism 200 through the first pipe member 500 to enlarge the crystals in the first thickening mechanism 200.
As shown in fig. 6, in one embodiment, the reaction crystallization mechanism 100 further includes a toothed distributor 140 and a partition plate 150, wherein a circumferential side of the toothed distributor 140 is connected to the fourth cylinder 110, and the partition plate 150 is connected to the toothed distributor 140 such that the partition plate 150 and the toothed distributor 140 together form a first material tank 151 and a second material tank 152 that are disposed at intervals.
It can be understood that the tooth-shaped distributor 140 and the partition 150 together form a first material tank 151 and a second material tank 152 which are arranged at intervals, so that sodium salt and fluosilicic acid in the conveying device enter the first material tank 151 and the second material tank 152 respectively, sodium salt and fluosilicic acid in the first material tank 151 and the second material tank 152 enter the fourth cylinder 110 again, and fluosilicic acid and sodium salt are fully contacted and reacted under the stirring action of the fourth stirring piece 122.
As shown in fig. 6, in one embodiment, the reaction crystallization mechanism 100 further includes a central cylinder 160, the central cylinder 160 is located inside the fourth cylinder 110 and connected to the fourth cylinder 110, and the active end of the fourth stirring member 122 is located inside the central cylinder 160.
It will be appreciated that the central barrel 160 is located inside the fourth barrel 110, and the active end of the fourth stirring member 122 is located inside the central barrel 160, and the central barrel 160 serves to enhance the stirring effect so that the fluorosilicic acid and sodium salt are in more complete contact. Further, since the center barrel 160 can enhance the stirring effect, the fourth stirring member 122 having a smaller size can be used to reduce the motor power.
The application also provides sodium fluosilicate production equipment which comprises the sodium fluosilicate pretreatment device 10 in any embodiment.
Compared with the prior art, the utility model has at least the following advantages:
In the sodium fluosilicate pretreatment device 10, fluosilicic acid and sodium salt are fully contacted and reacted in the reaction crystallization mechanism 100 to generate crystals, then slurry flows to the first thickening mechanism 200 through the first pipeline member 500, crystal nuclei are increased in the first thickening mechanism 200, then slurry flows to the slurry washing mechanism 300 through the second pipeline member 600, process water is added in the slurry washing mechanism 300 at this time to wash silica gel and other crystal impurities in the slurry, then the slurry flows to the second thickening mechanism 400 through the third pipeline member 700, so that the crystal nuclei further grow in the second thickening mechanism 400, and meanwhile, process water can be added into the first cylinder 420 through the washing pipeline 430 to further wash silica gel and other crystal impurities in the slurry, and the quality of sodium fluosilicate is improved through the washing operation of the slurry washing mechanism 300 and the second thickening mechanism 400.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A sodium fluorosilicate pretreatment device (10), characterized by comprising: a reaction crystallization mechanism (100), a first thickening mechanism (200), a slurry washing mechanism (300) and a second thickening mechanism (400);
The top of the first thickening mechanism (200) is communicated with the bottom of the reaction crystallization mechanism (100) through a first pipeline piece (500), and the bottom of the first thickening mechanism (200) is communicated with the top of the slurry washing mechanism (300) through a second pipeline piece (600);
The second thickening mechanism (400) comprises a first frame (410), a first cylinder (420) and a washing pipeline (430), wherein one side of the slurry washing mechanism (300) is communicated with the top of the first cylinder (420) through a third pipeline piece (700), so that materials sequentially flow through the reaction crystallization mechanism (100), the first thickening mechanism (200), the slurry washing mechanism (300) and the second thickening mechanism (400); the first cylinder (420) and the washing pipeline (430) are both installed on the first frame (410), and the washing pipeline (430) is located above the first cylinder (420).
2. The sodium fluosilicate pretreatment device (10) according to claim 1, wherein the washing pipeline (430) comprises a water inlet part (431) and an annular spraying part (432) which are communicated, the annular spraying part (432) is installed on the first frame (410), and a plurality of water outlet holes which are arranged at intervals are formed in one side, adjacent to the first cylinder (420), of the annular spraying part (432).
3. The sodium fluosilicate pretreatment device (10) according to claim 1, wherein the second thickening mechanism (400) further comprises a first toothed overflow weir (440) and a first stirring assembly (450), the first toothed overflow weir (440) is mounted at the end part of the inner wall of the first cylinder (420), a first overflow groove (441) is formed by the first toothed overflow weir (440) and the inner wall of the first cylinder (420), a first overflow port (421) is formed in the first cylinder (420), and the first overflow port (421) is communicated with the first overflow groove (441);
The first stirring assembly (450) comprises a first motor (451) and a first stirring piece (452), the first motor (451) is installed on the first frame (410), the power output end of the first motor (451) is connected with the first stirring piece (452), and the stirring action end of the first stirring piece (452) is located inside the first barrel (420).
4. The sodium fluosilicate pretreatment device (10) according to claim 1, wherein the first thickening mechanism (200) comprises a second frame (210), a second cylinder (220), a second tooth-shaped overflow weir (230) and a second stirring assembly (240), the second cylinder (220) is mounted on the second frame (210), the first pipeline (500) is mounted on the second frame (210) and communicated with the second cylinder (220), one end of the second pipeline (600) is communicated with the bottom of the second cylinder (220), the second tooth-shaped overflow weir (230) is mounted on the end of the inner wall of the second cylinder (220), a second overflow groove (231) is jointly formed by the second tooth-shaped overflow weir (230) and the inner wall of the second cylinder (220), and a second overflow port is formed in the second cylinder (220) and communicated with the second overflow groove (231);
The second stirring assembly (240) comprises a second motor (241) and a second stirring piece (242), the second motor (241) is installed on the second rack (210), the power output end of the second motor (241) is connected with the second stirring piece (242), and the stirring action end of the second stirring piece (242) is located inside the second cylinder (220).
5. The sodium fluosilicate pretreatment device (10) according to claim 1, wherein the slurry washing mechanism (300) comprises a third cylinder (310), a third stirring assembly (320) and a slurry extractor (330), one end of the second pipeline member (600) is communicated with the third cylinder (310), the third stirring assembly (320) comprises a third motor (321) and a third stirring member (322), the third motor (321) is mounted on the third cylinder (310), a power output end of the third motor (321) is connected with the third stirring member (322), one end of the slurry extractor (330) is communicated with the third cylinder (310), and one side of the slurry extractor (330) is communicated with the third pipeline member (700).
6. The sodium fluosilicate pretreatment device (10) according to claim 5, wherein a liquid level device is arranged in the third cylinder (310), and an electric valve (800) is arranged at the bottom of the first thickening mechanism (200) and the bottom of the reaction crystallization mechanism (100), and each electric valve (800) is electrically connected with the liquid level device.
7. The sodium fluosilicate pretreatment device (10) according to claim 1, wherein the reaction crystallization mechanism (100) comprises a fourth cylinder (110), a fourth stirring assembly (120) and a third rack (130), the fourth cylinder (110) is mounted on the third rack (130), the fourth stirring assembly (120) comprises a fourth motor (121) and a fourth stirring member (122), the fourth motor (121) is mounted on the third rack (130), a power output end of the fourth motor (121) is connected with the fourth stirring member (122), and one end of the first pipeline member (500) is communicated with the bottom of the fourth cylinder (110).
8. The sodium fluosilicate pretreatment device (10) according to claim 7, wherein the reaction crystallization mechanism (100) further comprises a tooth-shaped distributor (140) and a partition plate (150), wherein the circumference of the tooth-shaped distributor (140) is connected with the fourth cylinder (110), and the partition plate (150) is connected with the tooth-shaped distributor (140) so that the partition plate (150) and the tooth-shaped distributor (140) together form a first material groove (151) and a second material groove (152) which are arranged at intervals.
9. The sodium fluorosilicate pretreatment apparatus (10) of claim 7, wherein the reactive crystallization mechanism (100) further comprises a central cylinder (160), the central cylinder (160) being located inside the fourth cylinder (110) and being connected to the fourth cylinder (110), the active end of the fourth stirring member (122) being located inside the central cylinder (160).
10. Sodium fluorosilicate production plant, characterized by comprising a sodium fluorosilicate pretreatment device (10) according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322482576.3U CN220919183U (en) | 2023-09-12 | 2023-09-12 | Sodium fluosilicate pretreatment device and sodium fluosilicate production equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322482576.3U CN220919183U (en) | 2023-09-12 | 2023-09-12 | Sodium fluosilicate pretreatment device and sodium fluosilicate production equipment |
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