CN215032216U - Aluminum cell waste refractory material treatment system - Google Patents
Aluminum cell waste refractory material treatment system Download PDFInfo
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- CN215032216U CN215032216U CN202022918227.8U CN202022918227U CN215032216U CN 215032216 U CN215032216 U CN 215032216U CN 202022918227 U CN202022918227 U CN 202022918227U CN 215032216 U CN215032216 U CN 215032216U
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- 229910052782 aluminium Inorganic materials 0.000 title abstract description 25
- 239000011819 refractory material Substances 0.000 title abstract description 22
- 239000002699 waste material Substances 0.000 title abstract description 19
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 title abstract description 10
- 238000002386 leaching Methods 0.000 abstract description 190
- 229910052731 fluorine Inorganic materials 0.000 abstract description 150
- 239000011737 fluorine Substances 0.000 abstract description 150
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 134
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 94
- 238000006386 neutralization reaction Methods 0.000 abstract description 58
- 238000001914 filtration Methods 0.000 abstract description 43
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 39
- 239000003546 flue gas Substances 0.000 abstract description 39
- 238000012545 processing Methods 0.000 abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 15
- 238000000227 grinding Methods 0.000 abstract description 15
- 239000004411 aluminium Substances 0.000 abstract description 10
- 235000019504 cigarettes Nutrition 0.000 abstract description 4
- 239000013049 sediment Substances 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 95
- 238000001556 precipitation Methods 0.000 description 78
- 239000007788 liquid Substances 0.000 description 67
- 239000000706 filtrate Substances 0.000 description 66
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 64
- 239000000243 solution Substances 0.000 description 58
- 230000008929 regeneration Effects 0.000 description 53
- 238000011069 regeneration method Methods 0.000 description 53
- 239000000779 smoke Substances 0.000 description 36
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 29
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- 238000005406 washing Methods 0.000 description 27
- 238000007654 immersion Methods 0.000 description 24
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- 239000002893 slag Substances 0.000 description 17
- 125000001153 fluoro group Chemical group F* 0.000 description 16
- 239000002002 slurry Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 13
- 239000012670 alkaline solution Substances 0.000 description 12
- 239000000428 dust Substances 0.000 description 11
- 238000004064 recycling Methods 0.000 description 11
- 238000004062 sedimentation Methods 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000001784 detoxification Methods 0.000 description 9
- 239000002920 hazardous waste Substances 0.000 description 7
- 230000003472 neutralizing effect Effects 0.000 description 7
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- 239000002910 solid waste Substances 0.000 description 7
- 231100000419 toxicity Toxicity 0.000 description 7
- 230000001988 toxicity Effects 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- 238000000498 ball milling Methods 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 6
- 239000000920 calcium hydroxide Substances 0.000 description 6
- 235000011116 calcium hydroxide Nutrition 0.000 description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 239000011449 brick Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
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- 238000011084 recovery Methods 0.000 description 4
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- OSVXSBDYLRYLIG-UHFFFAOYSA-N chlorine dioxide Inorganic materials O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012065 filter cake Substances 0.000 description 3
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- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
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- 239000004571 lime Substances 0.000 description 2
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- 238000011105 stabilization Methods 0.000 description 2
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- 230000002588 toxic effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 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 description 1
- 238000003723 Smelting Methods 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
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- 229910052801 chlorine Inorganic materials 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
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- 229910001385 heavy metal Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- ZODDGFAZWTZOSI-UHFFFAOYSA-N nitric acid;sulfuric acid Chemical compound O[N+]([O-])=O.OS(O)(=O)=O ZODDGFAZWTZOSI-UHFFFAOYSA-N 0.000 description 1
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Images
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- Removal Of Specific Substances (AREA)
Abstract
The utility model discloses a useless refractory material processing system of aluminium cell belongs to aluminium electroloysis overhaul sediment and handles the field. This processing system includes broken grinding module, collection cigarette module, water logging filtration module, one-level sink fluorine module, the two-level sinks fluorine module, alkaline leaching filtration module, neutralization filtration module and flue gas processing module, broken grinding module the water logging filtration module one-level sink fluorine module the two-level sink fluorine module alkaline leaching filtration module the neutralization filtration module connects gradually, broken grinding module collection cigarette module the water logging filtration module one-level sink fluorine module the two-level sink fluorine module alkaline leaching filtration module neutralization filtration module all with flue gas processing module connects. The utility model realizes the innocent treatment of the waste refractory materials of the aluminum electrolytic cell and realizes the reclamation of the overhaul residues to a certain extent.
Description
Technical Field
The utility model relates to an aluminium electroloysis overhaul sediment processing technology field especially relates to an useless refractory material processing system of aluminium cell.
Background
The aluminum electrolytic cell is a main device for metal aluminum smelting, the lining needs to be removed by major repair every 5-8 years, major repair slag is produced, and 15-20 kg of major repair slag is discharged per ton of electrolytic aluminum raw aluminum. The aluminum electrolysis overhaul slag is mainly divided into two categories of waste cathode carbon blocks and waste refractory materials, the main toxic and harmful components are cyanide and soluble fluoride, and the aluminum electrolysis overhaul slag is listed in the national hazardous waste record in 2016.
The treatment process of the aluminum electrolysis overhaul slag comprises solidification stabilization landfill, wet detoxification, traditional pyrogenic process, flotation, pyrogenic process volatilization and other processes. The most common wet detoxification process is classified into acid decomposition, alkali decomposition, water leaching and the like. The solidification and stabilization landfill not only can not fully utilize resources, but also occupies valuable hazardous and useless landfill resources; the traditional pyrogenic process is incomplete in detoxification and cannot fully recover resources; the detoxification products of the existing wet process are difficult to utilize, resources are difficult to recycle, and the salt content of the wastewater is high; large investment for pyrogenic volatilization, high treatment cost and immature technology. The current technology is difficult to meet the requirements of resource recovery and increasingly strict environmental protection.
In the aluminum electrolysis overhaul slag, the waste cathode carbon blocks account for about 55 percent, the waste refractory materials account for about 45 percent, and the research direction of the aluminum electrolysis overhaul slag treatment is classified treatment due to different components of the waste cathode carbon blocks and the waste refractory materials.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a useless refractory material processing system of aluminium cell. According to the utility model discloses an useless refractory material processing system of aluminium cell on carrying out decyanation defluorination innocent treatment's basis to aluminium cell overhaul sediment, extract fluorine and sodium ion wherein and carry out recycle, realized resourceful purpose, the utility model discloses a technical scheme as follows:
according to an aspect of the utility model, a useless refractory material processing system of aluminium cell is provided, this processing system include broken grinding module, collection cigarette module, water logging filtration module, one-level sink fluorine module, second grade and sink fluorine module, alkali soak filtration module, neutralization filtration module and flue gas processing module, broken grinding module, water logging filtration module, one-level sink fluorine module, second grade and sink fluorine module, alkali soak filtration module, neutralization filtration module and connect gradually, broken grinding module, collection cigarette module, water logging filtration module, one-level sink fluorine module, second grade and sink fluorine module, alkali soak filtration module, neutralization filtration module all are connected with flue gas processing module.
Preferably, the crushing and grinding module comprises a crusher, a ball mill and a vibrating screen, a discharge port of the crusher is communicated with a feed port of the ball mill, a discharge port of the ball mill is communicated with a feed port of the vibrating screen, and a discharge port of the vibrating screen is connected with the water immersion filtering module.
Preferably, the water immersion filter module comprises a water immersion reaction tank, a water immersion pressure filter pump, a water immersion filter press, a water immersion filtrate tank, a water immersion filtrate pump, a cyanogen breaking reaction tank and a cyanogen breaking liquid conveying pump, a feed inlet of the water immersion reaction tank is communicated with a discharge outlet of the vibrating screen, a discharge outlet of the water immersion reaction tank is communicated with a feed inlet of the water immersion pressure filter press through the water immersion pressure filter pump, a liquid outlet of the water immersion filter press is communicated with the water immersion filtrate tank, the water immersion filtrate tank is respectively communicated with the water immersion reaction tank and the cyanogen breaking reaction tank through the water immersion filtrate pump, and the cyanogen breaking reaction tank is connected with the primary fluorine precipitation module through the cyanogen breaking liquid conveying pump.
Preferably, the primary fluorine precipitation module comprises a primary fluorine precipitation reaction tank, a primary fluorine precipitation inclined plate settling tank, a primary fluorine precipitation centrifugal settling machine, a calcium fluoride pressure filter pump, a calcium fluoride pressure filter, a primary fluorine precipitation filtrate tank and a primary fluorine precipitation filtrate pump, wherein a feed inlet of the primary fluorine precipitation reaction tank is communicated with a cyanogen breaking liquid delivery pump, a discharge outlet of the primary fluorine precipitation reaction tank is communicated with a feed inlet of the primary fluorine precipitation inclined plate settling tank, the discharge gate of fluorine swash plate subsider is subsided to the one-level and the feed inlet intercommunication of fluorine centrifugal sedimentation machine is subsided to the one-level, and the discharge gate of fluorine centrifugal sedimentation machine is subsided to the one-level passes through calcium fluoride filter press and the feed inlet intercommunication of calcium fluoride pressure filter, and the liquid outlet of fluorine centrifugal sedimentation machine is subsided to the one-level, one-level and the liquid outlet of calcium fluoride pressure filter all communicates with the inlet of fluorine filtrate groove is subsided to the one-level, and the liquid outlet of fluorine filtrate groove is subsided to the one-level is passed through fluorine filtrate pump and is subsided fluorine module connection with the second grade.
Preferably, the second-stage fluorine precipitation module comprises a second-stage fluorine precipitation reaction tank, a second-stage fluorine precipitation inclined plate settling tank, a second-stage fluorine precipitation centrifugal settling machine, a coarse calcium fluoride slurry pump, a second-stage fluorine precipitation filtrate tank and a second-stage fluorine precipitation filtrate pump, the second-stage fluorine precipitation reaction tank is communicated with the first-stage fluorine precipitation filtrate pump, a discharge port of the second-stage fluorine precipitation reaction tank is communicated with a feed port of the second-stage fluorine precipitation inclined plate settling tank, a discharge port of the second-stage fluorine precipitation inclined plate settling tank is communicated with a feed port of the second-stage fluorine precipitation centrifugal settling machine, a discharge port of the second-stage fluorine precipitation centrifugal settling machine is communicated with the first-stage fluorine precipitation inclined plate settling tank through the coarse calcium fluoride slurry pump, a liquid outlet of the second-stage fluorine precipitation inclined plate settling tank is communicated with a liquid inlet of the second-stage fluorine precipitation filtrate tank, and a liquid outlet of the second-stage fluorine precipitation filtrate tank is connected with the caustic leaching filter module through the second-stage fluorine precipitation filtrate pump.
Preferably, the alkaline leaching filter module comprises an alkaline leaching reaction tank, an alkaline leaching filter press pump, an alkaline leaching filter press, an alkaline leaching filtrate tank, an alkaline leaching filtrate pump, an alkaline leaching solution regeneration reaction tank, an alkaline leaching regeneration inclined plate settling tank, an alkaline leaching solution regeneration filter press pump, an alkaline leaching solution regeneration filter press, a regeneration alkaline solution tank and a regeneration alkaline solution pump, wherein a feed inlet of the alkaline leaching reaction tank is communicated with the secondary fluorine-precipitating filtrate pump, a discharge outlet of the alkaline leaching reaction tank is communicated with the alkaline leaching filter press through the alkaline leaching filter press pump, a liquid outlet of the alkaline leaching filter press is communicated with a liquid inlet of the alkaline leaching filtrate tank, a liquid outlet of the alkaline leaching filtrate tank is communicated with a feed inlet of the alkaline leaching solution regeneration reaction tank through the alkaline leaching filtrate pump, a discharge outlet of the alkaline leaching solution regeneration reaction tank is communicated with a feed inlet of the alkaline leaching regeneration inclined plate settling tank, a discharge outlet of the alkaline leaching regeneration inclined plate settling tank is respectively communicated with a feed inlet of the alkaline leaching reaction tank and a feed inlet of the alkaline leaching solution regeneration filter press through the alkaline leaching solution regeneration filter press pump, the liquid outlet of the alkaline leaching regeneration inclined plate settling tank and the liquid outlet of the alkaline leaching solution regeneration filter press are both communicated with the liquid inlet of the regeneration alkaline solution tank, and the liquid outlet of the regeneration alkaline solution tank is connected with the flue gas treatment module through a regeneration alkaline solution pump.
Preferably, the neutralization filtering module comprises a neutralization reaction tank, a neutralization filter press pump, a neutralization filter press, a neutralization filtrate tank and a neutralization filtrate pump, wherein a feed inlet of the neutralization reaction tank is communicated with a discharge outlet of the alkaline leaching filter press, a discharge outlet of the neutralization reaction tank is communicated with a feed inlet of the neutralization filter press through the neutralization filter press pump, a liquid outlet of the neutralization filter press is communicated with a liquid inlet of the neutralization filtrate tank, and a liquid outlet of the neutralization filtrate tank is respectively communicated with a feed inlet of the aqueous leaching reaction tank and a feed inlet of the alkaline leaching reaction tank through the neutralization filtrate pump.
Preferably, the flue gas treatment module comprises a flue gas washing tower, a flue gas washing liquid circulating pump, an activated carbon adsorber, an environment smoke collecting fan and an exhaust funnel, the water immersion reaction tank, the cyanogen breaking reaction tank, the primary fluorine precipitation reaction tank, the alkaline leaching liquid regeneration reaction tank, the neutralization reaction tank and the regenerated alkaline liquid pump are communicated with the flue gas washing tower, a smoke outlet of the flue gas washing tower is communicated with a smoke inlet of the activated carbon adsorber, a smoke outlet of the activated carbon adsorber is communicated with a smoke inlet of the environment smoke collecting fan, a smoke outlet of the environment smoke collecting fan is connected with the exhaust funnel, and a liquid outlet of the flue gas washing tower is communicated with a liquid inlet and the alkaline leaching reaction tank of the flue gas washing tower through the flue gas washing liquid circulating pump.
Preferably, the smoke collecting module comprises an environment smoke collecting cover and a bag-type dust remover, the environment smoke collecting cover is arranged to be two, the two environment smoke collecting covers are respectively arranged above the crusher and the ball mill, the two environment smoke collecting covers are communicated with the bag-type dust remover, and a discharge port of the bag-type dust remover is communicated with the smoke washing tower.
The above technical scheme of the utility model, have as follows and show the effect:
(1) the utility model discloses an aluminium cell refractory material processing system that gives up, including broken grinding module, smoke collection module, water logging filtration module, one-level heavy fluorine module, second grade heavy fluorine module, alkali leaching filtration module, neutralization filtration module and flue gas treatment module, broken grinding module, water logging filtration module, one-level heavy fluorine module, second grade heavy fluorine module, alkali leaching filtration module, neutralization filtration module connect gradually, broken grinding module, smoke collection module, water logging filtration module, one-level heavy fluorine module, second grade heavy fluorine module, alkali leaching filtration module, neutralization filtration module all are connected with flue gas treatment module, the utility model discloses the water reuse rate is high, and waste water volume is few, carries out two-stage counter-current heavy fluorine processing to the water logging liquid, has improved water logging liquid retrieval and utilization number of times, not only realizes fluorine's recovery, has reduced the new water consumption of water logging liquid moreover by a wide margin; the calcium hydroxide is adopted to carry out fluorine precipitation regeneration on the alkaline leaching solution, so that calcium fluoride is recovered, the regeneration and the recycling of the alkaline leaching solution are realized, and the consumption of new water for detoxification by alkaline leaching is greatly reduced.
(2) Compared with the conventional treatment system, the treatment system of the scheme has the advantages that the alkaline leaching slag can be used for producing baking-free bricks for sale through grading and step-by-step treatment, so that the economic benefit can be directly generated, and the storage capacity of a landfill site is not occupied; the neutralized slag produced by further neutralizing the alkaline leaching slag belongs to harmless slag, can enter a common industrial solid waste landfill for landfill, does not occupy valuable hazardous waste landfill resources, and is easy to realize building material utilization.
(3) Fluorine and sodium alkali resources in the waste refractory material are recycled by the treatment system, the water extract is subjected to multi-stage fluorine precipitation, fluorine resources are recovered, and fine calcium fluoride with good quality is produced; the lime of the alkaline leaching solution is regenerated, so that the alkaline leaching solution is regenerated and utilized, the resource is recycled, the inorganic salt content of alkaline leaching residues and neutralization residues is reduced, and the next utilization of detoxification products is facilitated.
(4) The utility model treats the waste refractory material of the aluminum electrolytic cell step by step, and deposits fluorine in a grading way, thereby being beneficial to controlling process indexes and realizing continuous production.
Drawings
Fig. 1 is a schematic structural view of a first part of the present invention;
fig. 2 is a schematic structural diagram of the second part of the present invention.
1-a crusher, 2-a ball mill, 3-a vibrating screen, 4-an environmental smoke collecting hood, 5-a bag-type dust collector, 6-a water immersion reaction tank, 7-a water immersion filter press, 8-a water immersion filter press, 9-a water immersion filter tank, 10-a water immersion filter liquid pump, 11-a cyanogen breaking reaction tank, 12-a cyanogen breaking liquid delivery pump, 13-a first-stage fluorine precipitation reaction tank, 14-a first-stage fluorine precipitation inclined plate settling tank, 15-a first-stage fluorine precipitation centrifugal settling machine, 16-a calcium fluoride filter press pump, 17-a calcium fluoride filter press, 18-a first-stage fluorine precipitation filter tank, 19-a first-stage fluorine precipitation filter liquid pump, 20-a second-stage fluorine precipitation reaction tank, 21-a second-stage fluorine precipitation inclined plate settling tank, 22-a second-stage fluorine precipitation centrifugal settling machine, 23-a crude calcium fluoride slurry pump, 24-a second-stage fluorine precipitation filter liquid tank, 25-a secondary fluorine-precipitating filtrate pump, 26-an alkaline leaching reaction tank, 27-an alkaline leaching pressure filter pump, 28-an alkaline leaching pressure filter, 29-an alkaline leaching filtrate tank, 30-an alkaline leaching filtrate pump, 31-an alkaline leaching solution regeneration reaction tank, 32-an alkaline leaching regeneration inclined plate settling tank, 33-an alkaline leaching solution regeneration pressure filter pump, 34-an alkaline leaching solution regeneration pressure filter, 35-a regeneration alkaline solution tank, 36-a regeneration alkaline solution pump, 37-a neutralization reaction tank, 38-a neutralization pressure filter pump, 39-a neutralization pressure filter, 40-a neutralization filtrate tank, 41-a neutralization filtrate pump, 42-a flue gas washing tower, 43-a flue gas washing liquid circulating pump, 44-an active carbon adsorber, 45-an environmental smoke collection fan and 46-an exhaust barrel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
As shown in figures 1-2, according to the utility model discloses a useless refractory material processing system of aluminium cell, this processing system includes broken grinding module, smoke collecting module, water logging filtration module, the fluorine module is sunk to the one-level, the fluorine module is sunk to the second grade, alkali soaks filtration module, neutralization filtration module and flue gas processing module, broken grinding module, water logging filtration module, the fluorine module is sunk to the one-level, the fluorine module is sunk to the second grade, alkali soaks filtration module, neutralization filtration module connects gradually, broken grinding module, smoke collecting module, water logging filtration module, the fluorine module is sunk to the one-level, the fluorine module is sunk to the second grade, alkali soaks filtration module, neutralization filtration module all is connected with flue gas processing module.
The crushing and grinding module comprises a crusher 1, a ball mill 2 and a vibrating screen 3, a discharge port of the crusher 1 is communicated with a feed port of the ball mill 2, a discharge port of the ball mill 2 is communicated with a feed port of the vibrating screen 3, and a discharge port of the vibrating screen 3 is connected with a water immersion filtering module.
The water leaching filter module comprises a water leaching reaction tank 6, a water leaching filter pressing pump 7, a water leaching filter press 8, a water leaching filtrate tank 9, a water leaching filtrate pump 10, a cyanogen breaking reaction tank 11 and a cyanogen breaking filtrate conveying pump 12, wherein a feed inlet of the water leaching reaction tank 6 is communicated with a discharge outlet of the vibrating screen 3, a discharge outlet of the water leaching reaction tank 6 is communicated with a feed inlet of the water leaching filter press 8 through the water leaching filter pressing pump 7, a liquid outlet of the water leaching filter press 8 is communicated with the water leaching filtrate tank 9, the water leaching filtrate tank 9 is respectively communicated with the water leaching reaction tank 6 and the cyanogen breaking reaction tank 11 through the water leaching filtrate pump 10, and the cyanogen breaking reaction tank 11 is connected with the primary fluorine precipitation module through the cyanogen breaking filtrate conveying pump 12.
The primary fluorine precipitation module comprises a primary fluorine precipitation reaction tank 13, a primary fluorine precipitation inclined plate settling tank 14, a primary fluorine precipitation centrifugal settling machine 15, a calcium fluoride pressure filter pump 16, a calcium fluoride pressure filter 17, a primary fluorine precipitation filtrate tank 18 and a primary fluorine precipitation filtrate pump 19, the feed inlet and the broken cyanogen liquid delivery pump 12 intercommunication of one-level fluorine reaction tank 13 that sinks, the discharge gate of one-level fluorine reaction tank 13 that sinks and the feed inlet intercommunication of one-level fluorine swash plate subsider 14 that sinks, the discharge gate of one-level fluorine swash plate subsider 14 and the feed inlet intercommunication of one-level fluorine centrifugal sedimentation machine 15 that sinks, the discharge gate of one-level fluorine centrifugal sedimentation machine 15 passes through calcium fluoride filter-pressing pump 16 and calcium fluoride filter press 17's feed inlet intercommunication, fluorine swash plate subsider 14 is sunk to one-level fluorine, the liquid outlet of one-level fluorine centrifugal sedimentation machine 15 and calcium fluoride filter press 17 all communicates with the inlet of one-level fluorine filtrate groove 18 that sinks, the liquid outlet of one-level fluorine filtrate groove 18 that sinks is connected with the second grade fluorine module through one-level fluorine filtrate pump 19 that sinks.
The secondary fluorine precipitation module comprises a secondary fluorine precipitation reaction tank 20, a secondary fluorine precipitation inclined plate sedimentation tank 21, a secondary fluorine precipitation centrifugal sedimentation machine 22, a crude calcium fluoride slurry pump 23, a secondary fluorine precipitation filtrate tank 24 and a secondary fluorine precipitation filtrate pump 25, the second grade sinks fluorine reaction tank 20 and sinks fluorine filtrate pump 19 intercommunication with the one-level, the discharge gate that the second grade sinks fluorine reaction tank 20 and the feed inlet intercommunication of the fluorine swash plate subsider 21 of sinking of the second grade, the discharge gate of the fluorine swash plate subsider 21 of sinking of the second grade and the feed inlet intercommunication of the fluorine centrifugal sedimentation machine 22 of sinking of the second grade, the discharge gate of the fluorine centrifugal sedimentation machine 22 of sinking of the second grade is through thick calcium fluoride thick liquid pump 23 and the fluorine swash plate subsider 14 intercommunication of sinking of the one-level, the fluorine swash plate subsider 21 of the second grade, the liquid outlet of the fluorine centrifugal sedimentation machine 22 of sinking of the second grade all communicates with the inlet of the fluorine filtrate groove 24 of sinking of the second grade, the liquid outlet of the fluorine filtrate groove 24 of sinking of the second grade is connected with the alkaline leaching filter module through the fluorine filtrate pump 25 of the fluorine sinking of the second grade.
The alkaline leaching filter module comprises an alkaline leaching reaction tank 26, an alkaline leaching filter press pump 27, an alkaline leaching filter press 28, an alkaline leaching filtrate tank 29, an alkaline leaching filtrate pump 30, an alkaline leaching solution regeneration reaction tank 31, an alkaline leaching regeneration inclined plate settling tank 32, an alkaline leaching solution regeneration filter press 33, an alkaline leaching solution regeneration filter press 34, a regeneration alkaline solution tank 35 and a regeneration alkaline solution pump 36, wherein a feed inlet of the alkaline leaching reaction tank 26 is communicated with the secondary fluorine leaching filtrate pump 25, a discharge outlet of the alkaline leaching reaction tank 26 is communicated with the alkaline leaching filter press 28 through the alkaline leaching filter press 27, a liquid outlet of the alkaline leaching filter press 28 is communicated with a liquid inlet of the alkaline leaching filtrate tank 29, a liquid outlet of the alkaline leaching filtrate tank 29 is communicated with a feed inlet of the alkaline leaching solution regeneration reaction tank 31 through the alkaline leaching filtrate pump 30, a discharge outlet of the alkaline leaching solution regeneration reaction tank 31 is communicated with an inclined plate feed inlet of the alkaline leaching regeneration inclined plate settling tank 32, and a discharge outlet of the alkaline leaching regeneration filter press 32 is respectively communicated with a feed inlet of the alkaline leaching reaction tank 26 and an alkaline leaching solution regeneration filter press 33 The material inlet is communicated, the liquid outlet of the alkaline leaching regeneration inclined plate settling tank 32 and the liquid outlet of the alkaline leaching solution regeneration filter press 34 are both communicated with the liquid inlet of the regeneration alkaline solution tank 35, and the liquid outlet of the regeneration alkaline solution tank 35 is connected with the flue gas treatment module through a regeneration alkaline solution pump 36.
The neutralization filtering module comprises a neutralization reaction tank 37, a neutralization pressure filter pump 38, a neutralization filter press 39, a neutralization filtrate tank 40 and a neutralization filtrate pump 41, wherein a feed inlet of the neutralization reaction tank 37 is communicated with a discharge outlet of the alkaline leaching filter press 28, a discharge outlet of the neutralization reaction tank 37 is communicated with a feed inlet of the neutralization filter press 39 through the neutralization pressure filter pump 38, a liquid outlet of the neutralization filter press 39 is communicated with a liquid inlet of the neutralization filtrate tank 40, and a liquid outlet of the neutralization filtrate tank 40 is respectively communicated with a feed inlet of the aqueous leaching reaction tank 6 and a feed inlet of the alkaline leaching reaction tank 26 through the neutralization filtrate pump 41.
The flue gas treatment module comprises a flue gas washing tower 42, a flue gas washing liquid circulating pump 43, an activated carbon adsorber 44, an environment smoke collecting fan 45 and an exhaust funnel 46, wherein a water immersion reaction tank 6, a cyanogen breaking reaction tank 11, a primary fluorine precipitation reaction tank 13, an alkaline leaching reaction tank 26, an alkaline leaching liquid regeneration reaction tank 31, a neutralization reaction tank 37 and a regenerated alkaline liquid pump 36 are communicated with the flue gas washing tower 42, a smoke outlet of the flue gas washing tower 42 is communicated with a smoke inlet of the activated carbon adsorber 44, a smoke outlet of the activated carbon adsorber 44 is communicated with a smoke inlet of the environment smoke collecting fan 45, a smoke outlet of the environment smoke collecting fan 45 is connected with the exhaust funnel 46, and a liquid outlet of the flue gas washing tower 42 is respectively communicated with a liquid inlet of the flue gas washing tower 42 and the alkaline leaching reaction tank 26 through the flue gas washing liquid circulating pump 43.
The smoke collecting module comprises an environment smoke collecting cover 4 and a bag-type dust collector 5, the environment smoke collecting cover 4 is arranged to be two, the two environment smoke collecting covers 4 are respectively arranged above the crusher 1 and the ball mill 2, the two environment smoke collecting covers 4 are communicated with the bag-type dust collector 5, and a discharge hole of the bag-type dust collector 5 is communicated with the smoke washing tower 42.
The treatment steps of the waste refractory material of the aluminum electrolytic cell of the utility model are as follows:
A. crushing, ball milling and screening: crushing the waste refractory materials into waste refractory materials with the granularity of less than 20mm by using a crusher 1, then feeding the crushed waste refractory materials into a ball mill 2, wherein the ball milling time is 1.5 hours, the ball milling time is properly prolonged for the materials with higher content of the waste cathode carbon blocks, feeding the powder subjected to ball milling into a vibrating screen 3, sieving by using a 2-3 mm-sized screen mesh, feeding the undersize materials which are qualified by spot inspection into a water leaching reaction tank 6, returning the residues which are not passed through the screen mesh and the powder which is unqualified by spot inspection to the ball mill 2 for continuous ball milling, and crushing, grinding and sieving the waste refractory materials to obtain 18-200-mesh powder;
B. water leaching and filtering: adding water (or a water leaching solution and a neutralizing solution) and qualified powder materials subjected to ball milling into a water leaching reaction tank 6 according to a liquid-solid ratio of 10:1, stirring and leaching at normal temperature for 3 hours, conveying leaching slurry to a water leaching filter press 8 through a water leaching filter press pump 7 for filter pressing after leaching is finished, controlling the moisture content of a filter cake to be less than 35% in production, conveying the water leaching solution to return to the water leaching reaction tank 6 through the water leaching filter press pump 10 for leaching next batch of powder materials, repeatedly recycling the water leaching solution until the content of sodium fluoride in leaching residues is more than 0.5%, or leading the water leaching solution out from a discharge port of the water leaching filter press pump 7 to a cyanogen breaking reaction tank 11 for cyanogen breaking and detoxification after the content of cyanogen in the water leaching solution is more than 5 mg/L;
the water leaching solution after cyanogen breaking can be conveyed to the water leaching reaction tank 6 for recycling through a cyanogen breaking solution conveying pump 12, the cyanogen breaking and fluorine removing solution after cyanogen breaking and fluorine removing can be conveyed to the water leaching reaction tank 6 for recycling through a secondary fluorine precipitation filter pump 25, and the neutralizing solution can be conveyed to the water leaching reaction tank 6 for recycling through a neutralizing filter pump 41;
C. alkaline leaching and filtering: in the alkaline leaching reaction tank 26, according to the total fluorine content of the water leaching residues, adding an alkaline calcium-based composite fluorine-fixing agent which is 1.5 times of the theoretical dosage of fluorine and calcium, and according to the liquid-solid ratio of an alkaline leaching solution to the water leaching residues of 6:1 addition of OH-Controlling the temperature to be less than 100 ℃ to perform stirring reaction for 2-4 hours, after sampling and detecting that the fluorine ion concentration of the reaction liquid is less than 100mg/L, conveying the alkaline leaching slurry to an alkaline leaching filter press 28 through an alkaline leaching filter press pump 27 to perform filter pressing, and controlling the moisture content of a filter cake wet base of the alkaline leaching residue to be less than 35%; alkaline Leaching test detection F-Content is more than 100mg/L, CN-Returning the alkaline leaching residue larger than 5mg/L to the alkaline leaching reaction tank 26 for continuing the alkaline leaching detoxification treatment, F-The content is below 100mg/L, CN-The alkaline leaching residue less than 5mg/L is sent to a neutralization reaction tank 37 for treatment or is directly used for building materials; conveying the alkaline leaching solution back to the alkaline leaching reaction tank 26 through an alkaline leaching filtrate pump 30 to leach the next batch of water leaching residues, or leading the alkaline leaching solution out from a discharge port of the alkaline leaching filtrate pump 30 to an alkaline leaching solution regeneration reaction tank 31 for regeneration treatment;
the alkaline calcium-based composite fluorine-fixing agent for alkaline leaching mainly comprises quicklime or slaked lime, desulfurized gypsum and sodium hydroxide; quicklime, slaked limeCaO or Ca (OH)2The content of active ingredients is more than or equal to 70 percent, and the CaSO of the desulfurized gypsum4˙2H2O content is more than or equal to 80 percent (calculated according to dry basis), heavy metal content is lower than the toxicity leaching index limit value, CaSO3˙l/2H2O﹤5％；
D. Neutralizing and filtering alkaline leaching residues: adding water (or neutralizing liquid for reuse) according to the liquid-solid ratio of 6:1 in a neutralization reaction tank 37, adding alkali leaching residues, stirring at normal temperature, dropwise adding 98% concentrated sulfuric acid to neutralize residual Ca (OH) in detoxication residues2Stopping dropwise adding sulfuric acid, and after the pH value of the slurry is stabilized at 7-9 for more than 1 hour, neutralizing the detoxified residues; the neutralized slurry is conveyed to a neutralization filter press 39 by a neutralization filter press pump 38 for filter pressing, the moisture content of a filter cake is controlled to be less than 35%, and harmless neutralized slag is produced; the neutralization solution is conveyed to the water leaching reaction tank 6 or the alkaline leaching reaction tank 26 by a neutralization filtrate pump 41 for recycling; the content of fluorine detected by toxicity leaching test is less than 100mg/L, CN-<5mg/L of neutralization slag is sent to a common industrial solid waste landfill for landfill or is comprehensively utilized after further detoxification and solidification;
E. breaking cyanogen in water leaching solution: leading out part of water leaching solution from an outlet of a water leaching solution pump 10 to a cyanogen breaking reaction tank 11, heating the water leaching solution to 50-80 ℃, stirring, and adding ClO2/CN-Adding chlorine dioxide into the water leaching filtrate according to the proportion of 2.0-5.0 to break cyanogen, controlling the oxidation-reduction potential OPR to be 300-800 mV, reacting for 1-3 h, stabilizing the residual chlorine at 3-6 ppm for more than 30min, sampling and detecting, and obtaining water leaching solution CN-The concentration less than 0.5mg/L is completed by cyanogen breaking; the cyanogen breaking water leaching solution is conveyed to a first-stage fluorine precipitation reaction tank 13 for fluorine precipitation or returned to the water leaching reaction tank 6 for recycling through a cyanogen breaking solution conveying pump 12;
F. calcium fluoride recovery and refining: calcium fluoride recovery by two-stage countercurrent fluorine precipitation process
Fluorine precipitation in the first stage: the cyanogen-breaking water extract conveyed by a cyanogen-breaking liquid conveying pump 12 is stirred at normal temperature in a primary fluorine-precipitating reaction tank 13, industrial pure calcium hydroxide with the theoretical dosage of 0.4-0.6 times (calcium ion meter) is added to carry out fluorine-precipitating treatment on the cyanogen-breaking water extract, the reaction time is 2-4 h, the fluorine-precipitating solution automatically flows into a primary fluorine-precipitating inclined plate settling tank 14 for settling, bottom slurry is placed into a primary fluorine-precipitating centrifugal settling machine 15 for centrifugal separation, the slurry produced by the centrifugal settling machine is conveyed to a calcium fluoride filter press 17 by a calcium fluoride filter press pump 16 for filter pressing, and refined calcium fluoride is produced; primary fluorine precipitation clear liquid produced by the primary fluorine precipitation inclined plate settling tank 14, the primary fluorine precipitation centrifugal settling machine 15 and the calcium fluoride filter press 17 is conveyed to a secondary fluorine precipitation reaction tank 20 by a primary fluorine precipitation filtrate pump 19 for secondary fluorine precipitation;
and (3) fluorine precipitation in the second stage: under the condition of normal temperature stirring, adding industrial pure calcium hydroxide with the theoretical dosage of 0.2-1.0 time (calcium ion meter) into primary fluorine precipitation clear liquid in a secondary fluorine precipitation reaction tank 20 for fluorine precipitation treatment, wherein the reaction time is 2-4 h, the fluorine precipitation liquid after the fluorine precipitation reaction automatically flows into a secondary fluorine precipitation inclined plate settling tank 21 for settling, the bottom slurry automatically flows into a secondary fluorine precipitation centrifugal settling machine 22 for centrifugal separation, the produced crude calcium fluoride is conveyed by a crude calcium fluoride slurry pump 23 and returns to a primary fluorine precipitation reaction tank 13 for refining, and the clear liquid produced by the secondary fluorine precipitation inclined plate settling tank 21 and the secondary fluorine precipitation centrifugal settling machine 22 returns to a water leaching reaction tank 6 or an alkaline leaching reaction tank 26 for recycling;
G. regeneration of alkaline leaching solution: after repeated recycling, the alkalinity of the alkaline leaching solution is increased and Na is added2SO4When inorganic salt is enriched, conveying an alkaline leaching solution from the outlet of an alkaline leaching solution pump 30 to an alkaline leaching solution regeneration reaction tank 31, adding lime which is 0.8-1.5 times of the amount of calcium required by the reaction of calcium hydroxide and sodium sulfate to regenerate the alkaline leaching solution, reacting under the conditions of normal temperature and stirring to obtain regenerated slurry mainly containing calcium hydroxide, sodium hydroxide, calcium sulfate and other components, automatically flowing the reaction slurry into an alkaline leaching solution regeneration inclined plate settling tank for settling, conveying bottom slurry to an alkaline leaching solution regeneration filter press 34 through an alkaline leaching solution regeneration filter press 3433 to produce calcium fluoride-containing gypsum residue (common solid waste), and conveying part of inclined plate settling slurry to the alkaline leaching reaction tank 26 through the alkaline leaching solution regeneration filter press 34 for recycling; regenerated alkali liquor is conveyed to the flue gas washing tower 42 by a regenerated alkali liquor pump 36 to be used as circulating washing liquid, and part of regenerated alkali liquor is conveyed to an external flue gas treatment system by the regenerated alkali liquor pump 36 to be used for desulfurization or sold;
H. flue gas treatment: the dust-containing flue gas generated by the crusher 1, the ball mill 2 and the vibrating screen 3 is collected by a smoke collecting hood and then sent to a bag-type dust collector 5 for dust removal treatment; the flue gas from the water leaching reaction tank 6, the cyanogen breaking reaction tank 11, the primary fluorine precipitation reaction tank 13, the secondary fluorine precipitation reaction tank 20, the alkaline leaching reaction tank 26, the alkaline leaching solution regeneration reaction tank 31 and the neutralization reaction tank 37 and the flue gas from the bag-type dust collector 5 are sent to a flue gas washing tower 42, and are in countercurrent contact with and washed by a circulating washing liquid from a flue gas washing circulating pump, wherein the circulating washing liquid is an alkaline leaching regeneration solution added with NaOH, and the flue gas washed by the flue gas washing tower 42 is filtered by an activated carbon filter and then sent to an exhaust funnel 46 for discharge by an environmental smoke collection fan 45; the surplus circulating washing liquid is conveyed to the alkaline leaching reaction tank 26 for recycling through the flue gas washing circulating pump.
I. Treatment effect;
the components of the waste refractory material of the aluminum electrolytic cell before treatment are as follows:
| composition (I) | C | NaF | Al2O3 | SiO2 | CaO |
| ％ | 2.8 | 8.45 | 29.15 | 44.68 | 6.86 |
| Composition (I) | MgO | CaF2 | Aluminum-iron alloy | Na3AlF6 | CN- |
| ％ | 2.79 | 0.82 | 0.8 | 3.62 | 0.03 |
The waste refractory material has slightly lower cyanogen content and fluorine content, 30 percent of the alkali leaching slag is discharged for producing baking-free bricks after treatment, and 70 percent of the neutralization slag is produced after continuous treatment.
The leaching toxicity and corrosivity of the baking-free bricks processed by the neutralization slag and the alkaline leaching slag are identified as follows:
in the above table, the leaching toxicity of the sample is detected according to the sulfuric acid-nitric acid method of the leaching toxicity leaching method of HJT 299-2007 solid waste, and in the leaching toxicity detection result, F-The concentration is identified according to the limit value of I-type industrial solid waste, and the cyanogen is identified according to the limit value specified in GB 5085.3-2007 identification standard leaching toxicity identification of hazardous waste; corrosivity leachate was prepared according to the "GB/T15555.12-1995 glass electrode method for identifying corrosivity of solid wastes", and identified according to the standard limits of the "GB 5085.1 Standard for identifying corrosivity of hazardous wastes".
According to the general rule of GB 5085.7-2019 hazardous waste identification Standard 6.2, the solid waste generated in the hazardous waste utilization process with the toxic hazardous characteristic is identified to be no longer hazardous and not to belong to hazardous waste, and the produced baking-free brick is no longer hazardous and can be sold as a product.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A waste refractory material treatment system of an aluminum electrolysis cell is characterized in that: including broken grinding module, collection cigarette module, water logging filtration module, one-level heavy fluorine module, the heavy fluorine module of second grade, alkaline leaching filtration module, neutralization filtration module and flue gas treatment module, broken grinding module, water logging filtration module, the heavy fluorine module of one-level, the heavy fluorine module of second grade, alkaline leaching filtration module, neutralization filtration module connect gradually, broken grinding module, collection cigarette module, water logging filtration module, the heavy fluorine module of one-level, the heavy fluorine module of second grade, alkaline leaching filtration module, neutralization filtration module all are connected with flue gas treatment module.
2. The aluminum reduction cell spent refractory treatment system of claim 1, wherein: the crushing and grinding module comprises a crusher, a ball mill and a vibrating screen, a discharge port of the crusher is communicated with a feed port of the ball mill, a discharge port of the ball mill is communicated with a feed port of the vibrating screen, and a discharge port of the vibrating screen is connected with the water immersion filtering module.
3. The aluminum reduction cell spent refractory treatment system of claim 2, wherein: the water immersion filter module comprises a water immersion reaction tank, a water immersion filter press pump, a water immersion filter press, a water immersion filter tank, a water immersion filter liquor pump, a cyanogen breaking reaction tank and a cyanogen breaking liquid conveying pump, a feed inlet of the water immersion reaction tank is communicated with a discharge outlet of a vibrating screen, a discharge outlet of the water immersion reaction tank is communicated with a feed inlet of the water immersion filter press through the water immersion filter liquor pump, a liquid outlet of the water immersion filter press is communicated with the water immersion filter liquor tank, the water immersion filter liquor tank is communicated with the water immersion reaction tank and the cyanogen breaking reaction tank respectively through the water immersion filter liquor pump, and the cyanogen breaking reaction tank is connected with the one-level fluorine precipitation module through the cyanogen breaking liquid conveying pump.
4. The aluminum reduction cell spent refractory treatment system of claim 3, wherein: the primary fluorine precipitation module comprises a primary fluorine precipitation reaction tank, a primary fluorine precipitation inclined plate settling tank, a primary fluorine precipitation centrifugal settling machine, a calcium fluoride filter press pump, a calcium fluoride filter press, a primary fluorine precipitation filtrate tank and a primary fluorine precipitation filtrate pump, wherein a feed inlet of the primary fluorine precipitation reaction tank is communicated with a cyanogen breaking liquid delivery pump, a discharge outlet of the primary fluorine precipitation reaction tank is communicated with a feed inlet of the primary fluorine precipitation inclined plate settling tank, the discharge gate of fluorine swash plate subsider is subsided to the one-level and the feed inlet intercommunication of fluorine centrifugal sedimentation machine is subsided to the one-level, and the discharge gate of fluorine centrifugal sedimentation machine is subsided to the one-level passes through calcium fluoride filter press and the feed inlet intercommunication of calcium fluoride pressure filter, and the liquid outlet of fluorine centrifugal sedimentation machine is subsided to the one-level, one-level and the liquid outlet of calcium fluoride pressure filter all communicates with the inlet of fluorine filtrate groove is subsided to the one-level, and the liquid outlet of fluorine filtrate groove is subsided to the one-level is passed through fluorine filtrate pump and is subsided fluorine module connection with the second grade.
5. The aluminum reduction cell spent refractory treatment system of claim 4, wherein: the second grade is heavy fluorine module and is included the second grade and is heavy fluorine reacting bath, the fluorine swash plate subsider is heavy to the second grade, the fluorine centrifugal sedimentation machine is heavy to the second grade, thick calcium fluoride slurry pump, the fluorine filtrate groove is heavy to the second grade and the fluorine filtrate pump is heavy to the second grade, the fluorine reacting bath is heavy to the second grade and the fluorine filtrate pump is heavy to the second grade, the discharge gate of the fluorine reaction bath is heavy to the second grade and the feed inlet intercommunication of the fluorine centrifugal sedimentation machine is heavy to the second grade, the discharge gate of the fluorine centrifugal sedimentation machine is heavy to the second grade passes through thick calcium fluoride slurry pump and the fluorine swash plate subsider intercommunication is heavy to the one-level, the fluorine swash plate subsider is heavy to the second grade, the liquid outlet of the fluorine centrifugal sedimentation machine is heavy with the inlet intercommunication of the fluorine filtrate groove of the second grade, the liquid outlet of the fluorine filtrate groove is heavy to the second grade is connected with the caustic dip filtration module through the fluorine filtrate pump.
6. The aluminum reduction cell spent refractory treatment system of claim 5, wherein: the alkaline leaching filter module comprises an alkaline leaching reaction tank, an alkaline leaching filter press pump, an alkaline leaching filter press, an alkaline leaching filter liquor tank, an alkaline leaching filtrate pump, an alkaline leaching liquor regeneration reaction tank, an alkaline leaching regeneration inclined plate settling tank, an alkaline leaching liquor regeneration filter press pump, an alkaline leaching liquor regeneration filter press, a regeneration alkaline liquor tank and a regeneration alkaline liquor pump, wherein a feed inlet of the alkaline leaching reaction tank is communicated with the secondary fluorine-precipitating filtrate pump, a discharge outlet of the alkaline leaching reaction tank is communicated with the alkaline leaching filter press through the alkaline leaching filter press pump, a liquid outlet of the alkaline leaching filter press is communicated with a liquid inlet of the alkaline leaching filter liquor tank, a liquid outlet of the alkaline leaching filter liquor tank is communicated with a feed inlet of the alkaline leaching liquor regeneration reaction tank through the alkaline leaching filtrate pump, a discharge outlet of the alkaline leaching liquor regeneration reaction tank is communicated with a feed inlet of the alkaline leaching regeneration inclined plate settling tank, a discharge outlet of the alkaline leaching regeneration inclined plate settling tank is respectively communicated with a feed inlet of the alkaline leaching reaction tank and a feed inlet of the alkaline leaching liquor regeneration filter press through the alkaline leaching liquor regeneration filter press pump, the liquid outlet of the alkaline leaching regeneration inclined plate settling tank and the liquid outlet of the alkaline leaching solution regeneration filter press are both communicated with the liquid inlet of the regeneration alkaline solution tank, and the liquid outlet of the regeneration alkaline solution tank is connected with the flue gas treatment module through a regeneration alkaline solution pump.
7. The aluminum reduction cell spent refractory treatment system of claim 6, wherein: the neutralization filtering module comprises a neutralization reaction tank, a neutralization filter press pump, a neutralization filter press, a neutralization filtrate tank and a neutralization filtrate pump, wherein a feed inlet of the neutralization reaction tank is communicated with a discharge outlet of the alkaline leaching filter press, a discharge outlet of the neutralization reaction tank is communicated with a feed inlet of the neutralization filter press through the neutralization filter press pump, a liquid outlet of the neutralization filter press is communicated with a liquid inlet of the neutralization filtrate tank, and a liquid outlet of the neutralization filtrate tank is respectively communicated with a feed inlet of the water leaching reaction tank and a feed inlet of the alkaline leaching reaction tank through the neutralization filtrate pump.
8. The aluminum reduction cell spent refractory treatment system of claim 7, wherein: the flue gas treatment module includes flue gas washing tower, flue gas washing liquid circulating pump, activated carbon adsorber, environment collection cigarette fan, the aiutage, the water logging reaction tank, broken cyanogen reaction tank, one-level heavy fluorine reaction tank, alkaline leaching liquid regeneration reaction tank, neutralization reaction tank and regeneration lye pump all with flue gas washing tower intercommunication, the outlet flue of flue gas washing tower and the inlet flue intercommunication of activated carbon adsorber, the outlet flue and the environment collection cigarette fan inlet intercommunication of activated carbon adsorber, environment collection cigarette fan outlet flue is connected with the aiutage, the liquid outlet of flue gas washing tower passes through flue gas washing liquid circulating pump respectively with the inlet and the alkaline leaching reaction tank intercommunication of flue gas washing tower.
9. The aluminum reduction cell spent refractory treatment system of claim 8, wherein: the smoke collecting module comprises an environment smoke collecting cover and a bag-type dust remover, the environment smoke collecting cover is arranged to be two, the two environment smoke collecting covers are respectively arranged above the crusher and the ball mill, the two environment smoke collecting covers are communicated with the bag-type dust remover, and a discharge port of the bag-type dust remover is communicated with the smoke washing tower.
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Effective date of registration: 20240508 Address after: 242300 intersection of Dongcheng Avenue and Dongcheng Road, heli Park, Ningguo Economic and Technological Development Zone, Ningguo City, Xuancheng City, Anhui Province Patentee after: Anhui Boshike Environmental Protection Technology Co.,Ltd. Country or region after: China Patentee after: Guangxi Boshike Environmental Technology Co.,Ltd. Address before: 242300 intersection of Dongcheng Avenue and Dongcheng Road, heli Park, Ningguo Economic and Technological Development Zone, Ningguo City, Xuancheng City, Anhui Province Patentee before: Anhui Boshike Environmental Protection Technology Co.,Ltd. Country or region before: China |
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