CN212450663U - Aluminum ash recovery processing system - Google Patents
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- CN212450663U CN212450663U CN202021843744.7U CN202021843744U CN212450663U CN 212450663 U CN212450663 U CN 212450663U CN 202021843744 U CN202021843744 U CN 202021843744U CN 212450663 U CN212450663 U CN 212450663U
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Abstract
The utility model provides an aluminium ash recovery processing system. The system comprises an aluminum ash screening treatment system, an aluminum ash reaction system, a reaction material separation and drying system and a finished product storage system which are sequentially connected. This system has retrieved the dust in with the processing procedure through dust collecting tube, has not only avoided the influence of dust to the surrounding environment, better avoid the resource loss moreover, has improved the resource recovery rate. The safety problem possibly brought in the aluminum ash treatment process is effectively solved by introducing the inert gas. The generated gases such as ammonia, hydrogen, methane and the like can be safely and effectively recovered as resources. The system comprehensively treats the waste aluminum ash, effectively recovers various resources in the waste aluminum ash, and finally uses the residual gas as a heat source of the system, so that the whole system realizes the complete cyclic utilization and obviously improves the resource utilization rate.
Description
Technical Field
The utility model belongs to the technical field of waste resource comprehensive treatment recycles. In particular to an aluminum ash recovery processing system.
Background
The aluminum ash is a product of cooling slag generated in the production process of electrolytic aluminum or cast aluminum, and is generated in all production processes of aluminum melting as solid waste, so that the production amount is huge every year. The main components of the material comprise substances with economic value such as aluminum oxide, aluminum nitride, aluminum carbide, aluminum sulfide, soluble salt and the like, and simultaneously contain a certain amount of harmful elements. Therefore, if a large amount of aluminum ash waste cannot be recycled reasonably, not only is the resource wasted, but also the environment is seriously affected. Therefore, the recovery and disposal of aluminum ash and the reuse of resources thereof have been continuously studied in this field.
Valuable resources and harmful substances contained in the aluminum ash are easy to generate toxic and harmful gas in the recovery treatment process, the generation of the gas can not only cause great influence on the environment atmosphere, but also easily cause explosion, have great potential safety hazard, and bring certain difficulty to the safe and efficient recovery treatment of the aluminum ash.
Disclosure of Invention
To the problem, the utility model provides an aluminium ash recovery processing system. The system can efficiently and safely recover various components in the aluminum ash, and can effectively avoid the influence of harmful gas on the environment and potential safety hazards. The utility model is realized by the following technical proposal
The utility model provides an aluminium ash recovery processing system, this system includes aluminium ash screening processing system, the aluminium ash reaction system who is connected with aluminium ash screening processing system, the reaction material separation drying system who is connected with aluminium ash reaction system, the finished product storage system who is connected with reaction material separation drying system.
Furthermore, the aluminum ash screening treatment system comprises a blanking hopper, a lifting machine connected with a discharge port of the blanking hopper, a raw material bin connected with a discharge port of the lifting machine, a conveying belt positioned right below an outlet of the raw material bin, a ball mill connected with a discharging end of the conveying belt, the lifting machine connected with the ball mill, and a rolling screen connected with the lifting machine, wherein the rolling screen is respectively connected with the magnetic separator, the 60-80 mesh particle storage tank and the particle storage tank smaller than 80 mesh; the magnetic separator discharge gate be connected with aluminium granule storage jar, 60-80 mesh granule storage jar is connected with the ball mill through the material pipeline, is less than 80 mesh granule storage jar discharge gates and is equipped with screw conveyer under, screw conveyer discharge gate carries the material to aluminium ash reaction system.
Furthermore, the aluminum ash screening treatment system also comprises a plurality of dust collecting pipelines and a bag-type dust collector connected with the outlets of the collecting pipelines; the plurality of collecting pipelines are respectively used for collecting dust in the blanking hopper, the raw material bin, the ball mill, the 60-80 mesh particle storage tank and the particle storage tank smaller than 80 mesh, and then the collected dust is conveyed to the particle storage tank smaller than 80 mesh through the bag-type dust remover.
Furthermore, the aluminum ash reaction system comprises a stirring tank, a slurry pump connected with the stirring tank and a reaction tank connected with the slurry pump; a first gas outlet at the upper end of the stirring tank and a first gas outlet at the upper end of the reaction tank are both connected with a first water-sealed tank, a gas outlet of the first water-sealed tank is communicated with a concentrated ammonia device, a second gas outlet at the upper end of the reaction tank is also connected with a second water-sealed tank, the second water-sealed tank is connected with a dilute ammonia device, and a material outlet at the bottom end of the reaction tank is communicated with a reaction material separation and drying system through a material pipeline; preferably, the aluminum ash reaction system further comprises an emergency treatment pool, wherein an inlet of the emergency treatment pool is connected with a discharge port at the bottom end of the reaction tank, and an outlet of the emergency treatment pool is connected with the stirring tank.
Further, the aluminum ash reaction system also comprises a nitrogen storage tank, wherein the nitrogen storage tank passes through the stirring tank and the reaction tank through gas pipelines respectively.
Further, the dilute ammonia device comprises a washing tower connected with the aluminum ash reaction system, a discharge hole at the bottom end of the washing tower is communicated with a middle storage tank, the middle storage tank is communicated with a discharge pump, and the discharge pump is communicated with an ammonium sulfate storage tank; the device also comprises a sulfuric acid storage tank which is communicated with an inlet at the upper part of the washing tower through a circulating pump.
Further, the concentrated ammonia device comprises a hydrogen sulfide reactor, a discharge hole at the bottom end of the hydrogen sulfide reactor is communicated with a sodium hydrosulfide storage tank, and an outlet at the top end of the hydrogen sulfide reactor is communicated with an ammonia gas absorption tower; the hydrogen sulfide reactor is also provided with a sodium hydroxide solution inlet, and the sodium hydrosulfide storage tank is also communicated with the hydrogen sulfide reactor through a pipeline and a sodium hydrosulfide circulating pump; the ammonia absorption tower is also communicated with the heat exchanger through a material pipeline and a heat exchanger circulating pump.
Further, the reaction material separation and drying system comprises a five-section vacuum belt conveyor, and a material outlet of the five-section vacuum belt conveyor is connected with the aluminum ash dryer; a liquid outlet of a mother liquid area of the five-section vacuum belt conveyor is communicated with a mother liquid storage tank, a first-stage spraying area is communicated with a first-stage spraying area washing liquid storage tank, a second-stage spraying area is communicated with a second-stage spraying area washing liquid storage tank, a third-stage spraying area is communicated with a third-stage spraying area washing liquid storage tank, and a fourth-stage spraying area and a drying area are communicated with a fourth-stage spraying area washing liquid storage tank; an outlet of the mother liquor storage tank is communicated with a precipitation tank, an outlet of the precipitation tank is communicated with a strong brine tank, and the strong brine tank is communicated with a strong brine evaporation and crystallization system; and the first-stage spraying area washing liquid storage tank and the third-stage spraying area washing liquid storage tank are communicated with the saline mixing tank.
Further, the second-stage spraying area cleaning solution storage tank and the fourth-stage spraying area cleaning solution storage tank are communicated with a spraying device of the five-section vacuum belt conveyor through a conveying pipeline; the settling tank is also communicated with a feed inlet of the five-section vacuum belt conveyor through a material pipeline.
Furthermore, the brine mixing tank is communicated with the stirring tank through a material pipeline, and the solution in the brine mixing tank is conveyed to the stirring tank for recycling.
Compared with the prior art, the utility model discloses following positive beneficial effect has
When the system is used for treating the aluminum ash, firstly, the aluminum ash is subjected to ball milling and screening treatment, and aluminum-containing particles obtained by screening are subjected to magnetic separation and then aluminum-containing particles are recovered; recovering the large particles into the ball mill for ball milling again to fully recover the resources in the ball mill, and reacting the powder particles obtained by screening in an aluminum ash reaction system which discharges air through inert gas; the liquid obtained after the solid-liquid separation of the materials generated by the reaction is recycled in the whole system, and the solid is recovered after being dried and can be used as building materials and the like (the main component of the materials after the reaction and drying is alumina which can be used for partially replacing bauxite in the industries of steel, cement, refractory materials and the like); the gas generated by the reaction is combustible gas for the residual gas after ammonia gas recovery, and can be recovered and conveyed to a drying system to be used as a heat source. Therefore, the whole system realizes the full recycling of aluminum ash resources, does not waste resources or generate wastes, greatly reduces the consumption of extra resources and has good social and economic benefits.
This system has retrieved the dust in with the processing procedure through dust collecting tube, has not only avoided the influence of dust to the surrounding environment, better avoid the resource loss moreover, has improved the resource recovery rate. The safety problem possibly brought in the aluminum ash treatment process is effectively solved by introducing the inert gas. The generated gases such as ammonia gas can be safely and effectively recovered as resources.
The system comprehensively treats the waste aluminum ash, effectively recovers various resources in the waste aluminum ash, and finally uses the residual gas as a heat source of the system, so that the whole system realizes the complete cyclic utilization and obviously improves the resource utilization rate.
Drawings
Figure 1 shows one of the schematic diagrams of the aluminum ash screening treatment system,
figure 2 shows a second schematic diagram of the aluminum ash screening treatment system,
FIG. 3 is a schematic view of an aluminum ash reaction system
FIG. 4 shows a second schematic view of an aluminum ash reaction system,
FIG. 5 shows a third schematic view of an aluminum ash reaction system,
FIG. 6 shows a schematic view of a reaction mass separation and drying system,
figure 7 shows a schematic diagram of a lean ammonia plant,
figure 8 shows a schematic diagram of a concentrated ammonia plant,
FIG. 9 shows a schematic view of an aluminum ash recovery processing system,
the symbols in the drawings indicate that: 1 denotes a hopper, 2 denotes a hoist, 3 denotes a raw material silo, 4 denotes a conveyor belt, 5 denotes a ball mill, 6 denotes a rolling screen, 7 denotes a magnetic separator, 8 denotes an aluminum particle storage tank, 9 denotes a 60-80 mesh particle storage tank, 10 denotes a less-than-80 mesh particle storage tank, 11 denotes a screw conveyor, 12 denotes a dust collection pipe, 13 denotes a bag-type dust collector, 14 denotes a stirring tank, 15 denotes a slurry pump, 16 denotes a reaction tank, 17 denotes a first water-sealed tank, 18 denotes a second water-sealed tank, 19 denotes an emergency treatment tank, 20 denotes a nitrogen storage tank, 21 denotes a five-stage vacuum belt conveyor, 2101 denotes a mother liquid zone, 2102 denotes a primary spray zone, 2103 denotes a secondary spray zone, 2104 denotes a tertiary spray zone, 2105 denotes a quaternary spray zone, 2106 denotes an evacuation zone, 22 denotes a mother liquid storage tank, 23 denotes a primary spray zone storage tank, 24 denotes a secondary spray zone washing liquid storage tank, 25 denotes a tertiary spray zone washing liquid storage tank, 26 denotes a quaternary spray zone washing liquid storage tank, 27 denotes a precipitation tank, 28 denotes a concentrated brine tank, 29 denotes a concentrated brine evaporative crystallization system, 30 denotes a brine mixing tank, 31 denotes an aluminum ash dryer, 32 denotes a seal pump, 33 denotes a product tank, 34 denotes a scrubber, 35 denotes an intermediate storage tank, 36 denotes a discharge pump, 37 denotes an ammonium sulfate circulation pump, 38 denotes a hydrogen sulfide reactor, 39 denotes a sodium hydrosulfide intermediate tank, 40 denotes a sodium hydrosulfide circulation pump, 41 denotes an ammonia gas absorption tower, 42 denotes a heat exchanger, and 43 denotes a heat exchanger circulation pump.
Detailed Description
The present invention will be described in more detail with reference to the following embodiments, so as to facilitate the understanding of the technical solutions of the present invention, but the present invention is not limited to the scope of the present invention.
The utility model provides an aluminum ash recovery processing system, which comprises an aluminum ash screening processing system, an aluminum ash reaction system connected with the aluminum ash screening processing system, a reaction material separation and drying system connected with the aluminum ash reaction system, and a finished product storage system connected with the reaction material separation and drying system;
the aluminum ash screening treatment system comprises a blanking hopper, a lifting machine connected with a discharge port of the blanking hopper, a raw material bin connected with a discharge port of the lifting machine, a conveying belt positioned right below an outlet of the raw material bin, a ball mill connected with a discharging end of the conveying belt, the lifting machine connected with the ball mill, and a rolling screen connected with the lifting machine, wherein a discharge port of the rolling screen is respectively connected with a magnetic separator, a 60-80 mesh particle storage tank and a less than 80 mesh particle storage tank; the discharge port of the magnetic separator is connected with an aluminum particle storage tank, the 60-80-mesh particle storage tank is connected with a ball mill through a material pipeline, a screw conveyor is arranged right below the discharge port of the particle storage tank smaller than 80 meshes, and the material is conveyed to an aluminum ash reaction system through the discharge port of the screw conveyor;
the collected aluminum ash is placed in a raw material bin through a discharging hopper and a lifting machine, then is conveyed to a ball mill through the raw material bin and a conveying belt, and is conveyed to a rolling screen through the ball mill, the rolling screen is used for screening, oversize materials (mainly containing iron and aluminum) are placed in a magnetic separator for magnetic separation, and the residual aluminum particles after the magnetic separation are recovered. And placing the particles of 60-80 meshes obtained by screening with a rolling screen into a particle storage tank of 60-80 meshes, then conveying the particles into the ball mill for ball milling again in the ball mill, and recovering and fully utilizing the particles again. And placing the particles smaller than 80 meshes obtained by screening by the rolling screen into a particle storage tank smaller than 80 meshes, and then conveying the particles into an aluminum ash reaction system by a screw conveyor for reaction treatment.
Preferably, the aluminum ash screening treatment system further comprises a plurality of dust collecting pipelines and a bag-type dust collector connected with outlets of the collecting pipelines; the plurality of collecting pipelines are respectively used for collecting dust in the blanking hopper, the raw material bin, the ball mill, the 60-80 mesh particle storage tank and the particle storage tank smaller than 80 mesh, and then the collected dust is conveyed to the particle storage tank smaller than 80 mesh through the bag-type dust remover.
The dust that produces in this in-process through many dust collecting tube says collects each in-process, then collects the dust of collecting to being less than 80 mesh granule storage jar through the sack cleaner and carries out follow-up use. The process can not generate dust which has great influence on the environment, and materials in the process can be more sufficiently recovered, so that the resource recovery rate is improved.
The aluminum ash reaction system comprises a stirring tank, a slurry pump connected with the stirring tank and a reaction tank connected with the slurry pump; a first gas outlet at the upper end of the stirring tank and a first gas outlet at the upper end of the reaction tank are both connected with a first water-sealed tank, a gas outlet of the first water-sealed tank is communicated with a concentrated ammonia device, a second gas outlet at the upper end of the reaction tank is also connected with a second water-sealed tank, the second water-sealed tank is connected with a dilute ammonia device, and a material outlet at the bottom end of the reaction tank is communicated with a reaction material separation and drying system through a material pipeline; preferably, the retort can be a plurality of, a plurality of retort are established ties, the material after mixing in the agitator tank at first gets into first retort and reacts, then gets into the second retort of establishing ties and reacts, can react as to in a plurality of retort in proper order for the material reaction is more abundant, more abundant retrieves the material in the aluminium ash.
And (3) mixing the granular material smaller than 80 meshes conveyed into the stirring tank with the sodium hydroxide aqueous solution, uniformly stirring, conveying the mixture into the reaction tank through a material pump, reacting for 8-10 hours at the temperature of 80-120 ℃, conveying gas generated in the reaction process into a concentrated ammonia device from the top of the reaction tank for recycling, and conveying the mixed material generated in the reaction into a reaction material separation and drying system through a material pipeline for separation and drying.
Preferably, the aluminum ash reaction system further comprises an emergency treatment pool, wherein an inlet of the emergency treatment pool is connected with a discharge port at the bottom end of the reaction tank, and an outlet of the emergency treatment pool is connected with the stirring tank. When a problem occurs in the reaction process, materials in the reaction tank are conveyed to the stirring tank through the emergency treatment pool to be subjected to recycling treatment again, so that resource waste and environmental pollution caused by reaction material discharge are avoided.
More preferably, the aluminum ash reaction system further comprises a nitrogen storage tank, wherein the nitrogen storage tank passes through the stirring tank and the reaction tank respectively through a gas pipeline. Before the material mixing reaction and at the beginning of the mixing reaction, firstly introducing nitrogen into the stirring tank and the reaction tank, discharging oxygen in the stirring tank and the reaction tank through the nitrogen, conveying the mixed gas discharged from the stirring tank and the reaction tank into the dilute ammonia device through the second water-sealed tank to treat ammonia contained in the mixed gas, and recovering and reusing the residual inert gas after treatment or discharging the residual inert gas outside (no pollution exists to the atmosphere). And after the inert gas is discharged, closing the inert gas inlet valve, fully reacting the materials in the reaction tank to generate a large amount of mixed gas containing ammonia gas, and treating the mixed gas in the ammonia concentration device through the first water seal tank to recover the ammonia gas and other gases.
The reaction material separation and drying system comprises a five-section vacuum belt conveyor, and a material outlet of the five-section vacuum belt conveyor is connected with an aluminum ash dryer; a liquid outlet of a mother liquid area of the five-section vacuum belt conveyor is communicated with a mother liquid storage tank, a first-stage spraying area is communicated with a first-stage spraying area washing liquid storage tank, a second-stage spraying area is communicated with a second-stage spraying area washing liquid storage tank, a third-stage spraying area is communicated with a third-stage spraying area washing liquid storage tank, and a fourth-stage spraying area and a drying area are communicated with a fourth-stage spraying area washing liquid storage tank; an outlet of the mother liquor storage tank is communicated with a precipitation tank, an outlet of the precipitation tank is communicated with a strong brine tank, and the strong brine tank is communicated with a strong brine evaporation and crystallization system;
putting the reaction materials into a five-section vacuum dryer, firstly carrying out solid-liquid separation through a mother liquor zone, conveying the separated liquid into a mother liquor storage tank, precipitating the liquid in the mother liquor storage tank in a precipitation tank, putting the precipitated solid into a concentrated salt water tank, then carrying out evaporation crystallization treatment, recovering the salt in the concentrated salt water tank, and recycling the salt as a resource; the materials passing through the mother liquid zone are washed and subjected to solid-liquid separation through a first-stage spraying zone, a second-stage spraying zone, a third-stage spraying zone and a fourth-stage spraying zone in sequence, liquid generated after separation respectively enters a first-stage spraying zone washing liquid storage tank, a second-stage spraying zone washing liquid storage tank, a third-stage spraying zone washing liquid storage tank and a fourth-stage spraying zone washing liquid storage tank, the solid materials forward enter a drying zone of a five-stage vacuum belt conveyor for solid-liquid separation again, and the solid obtained through separation is conveyed to an aluminum ash drying machine for drying treatment (the temperature during drying is 300-600 ℃, and the drying is carried out until the water content is within 1 percent), and the product materials are obtained after drying. And liquid obtained by solid-liquid separation in the pumping area enters a washing liquid storage tank in the four-stage spraying area. The five-segment vacuum belt conveyor is a device well known to those skilled in the art.
Preferably, the first-stage spraying area washing liquid storage tank and the third-stage spraying area washing liquid storage tank are both communicated with the brine mixing tank, and the solution in the brine mixing tank is conveyed to the stirring tank for recycling; the secondary spraying area washing liquid storage tank and the fourth spraying area washing liquid storage tank are communicated with a spraying device of the five-section type vacuum belt conveyor through a conveying pipeline, so that the materials are recycled; the settling tank is also communicated with a feed inlet of the five-section vacuum belt conveyor through a material pipeline. Realizes the recycling of materials in the whole process, obviously improves the resource utilization rate and reduces the resource consumption.
Further, the dilute ammonia device comprises a washing tower connected with the aluminum ash reaction system, a discharge hole at the bottom end of the washing tower is communicated with a middle storage tank, the middle storage tank is communicated with a discharge pump, and the discharge pump is communicated with an ammonium sulfate storage tank; the device also comprises a sulfuric acid storage tank which is communicated with an inlet at the upper part of the washing tower through a circulating pump.
The concentrated ammonia device comprises a hydrogen sulfide reactor, wherein a discharge port at the bottom end of the hydrogen sulfide reactor is communicated with a sodium hydrosulfide storage tank, and an outlet at the top end of the hydrogen sulfide reactor is communicated with an ammonia gas absorption tower; the hydrogen sulfide reactor is also provided with a sodium hydroxide solution inlet, and the sodium hydrosulfide storage tank is also communicated with the hydrogen sulfide reactor through a pipeline and a sodium hydrosulfide circulating pump; the ammonia absorption tower is also communicated with the heat exchanger through a material pipeline and a heat exchanger circulating pump.
Conveying mixed gas containing inert gas (nitrogen) generated in the initial stirring tank and the reaction tank to a washing tower of a dilute ammonia device, reversely contacting with sulfuric acid in the washing tower to generate ammonium sulfate, and placing the ammonium sulfate in an ammonium sulfate storage tank to realize recycling of ammonia gas; the residual inert gas is discharged from the top end of the washing tower, so that the inert gas can be recycled and reused and can be discharged after reaching the standard.
The mixed gas with larger ammonia concentration generated in the reaction tank is introduced into a concentrated ammonia device, firstly mixed with sodium hydroxide solution to remove hydrogen sulfide gas in the mixed gas, the generated sodium hydrosulfide is placed in a sodium hydrosulfide storage tank for recycling, the rest unreacted gas enters an ammonia gas absorption tower and is in reverse contact with cooling water to generate ammonia water, the ammonia water is discharged from the bottom of the tower for recycling, the rest gas is discharged from the top of the tower and is recycled to an aluminum ash dryer for ignition as a heat source, namely, the whole process realizes the whole recycling of aluminum ash resources, and the operation is simple and safe, thereby having good social application value.
Claims (10)
1. The utility model provides an aluminium ash recovery processing system, its characterized in that, this system includes aluminium ash screening processing system, the aluminium ash reaction system who is connected with aluminium ash screening processing system, the reaction material separation drying system who is connected with aluminium ash reaction system, the finished product storage system who is connected with reaction material separation drying system.
2. The treatment system of claim 1, wherein the aluminum ash screening treatment system comprises a blanking hopper, a lifting machine connected with a discharge port of the blanking hopper, a raw material bin connected with a discharge port of the lifting machine, a conveying belt positioned right below an outlet of the raw material bin, a ball mill connected with a discharge end of the conveying belt, the lifting machine connected with the ball mill, and a rolling screen connected with the lifting machine, wherein the rolling screen is respectively connected with the magnetic separator, the 60-80 mesh particle storage tank and the less than 80 mesh particle storage tank;
the magnetic separator discharge gate be connected with aluminium granule storage jar, 60-80 mesh granule storage jar is connected with the ball mill through the material pipeline, is less than 80 mesh granule storage jar discharge gates and is equipped with screw conveyer under, screw conveyer discharge gate carries the material to aluminium ash reaction system.
3. The treatment system of claim 2, wherein the aluminum ash screening treatment system further comprises a plurality of dust collecting pipes and a bag-type dust collector connected with outlets of the collecting pipes; the plurality of collecting pipelines are respectively used for collecting dust in the blanking hopper, the raw material bin, the ball mill, the 60-80 mesh particle storage tank and the particle storage tank smaller than 80 mesh, and then the collected dust is conveyed to the particle storage tank smaller than 80 mesh through the bag-type dust remover.
4. The treatment system according to claim 1, wherein the aluminum ash reaction system comprises a stirring tank, a slurry pump connected with the stirring tank, and a reaction tank connected with the slurry pump;
a first gas outlet at the upper end of the stirring tank and a first gas outlet at the upper end of the reaction tank are both connected with a first water-sealed tank, a gas outlet of the first water-sealed tank is communicated with a concentrated ammonia device, a second gas outlet at the upper end of the reaction tank is also connected with a second water-sealed tank, the second water-sealed tank is connected with a dilute ammonia device, and a material outlet at the bottom end of the reaction tank is communicated with a reaction material separation and drying system through a material pipeline;
the aluminum ash reaction system further comprises an emergency treatment pool, wherein an inlet of the emergency treatment pool is connected with a discharge port at the bottom end of the reaction tank, and an outlet of the emergency treatment pool is connected with the stirring tank.
5. The processing system of claim 4, wherein the aluminum ash reaction system further comprises a nitrogen storage tank, and the nitrogen storage tank passes through the stirring tank and the reaction tank respectively through gas pipelines.
6. The treatment system of claim 4, wherein the dilute ammonia device comprises a washing tower connected with the aluminum ash reaction system, a discharge port at the bottom end of the washing tower is communicated with an intermediate storage tank, the intermediate storage tank is communicated with a discharge pump, and the discharge pump leads to the ammonium sulfate storage tank; the device also comprises a sulfuric acid storage tank which is communicated with an inlet at the upper part of the washing tower through a circulating pump.
7. The treatment system of claim 4, wherein the concentrated ammonia device comprises a hydrogen sulfide reactor, a discharge port at the bottom end of the hydrogen sulfide reactor is communicated with a sodium hydrosulfide storage tank, and an outlet at the top end of the hydrogen sulfide reactor is communicated with an ammonia gas absorption tower;
the hydrogen sulfide reactor is also provided with a sodium hydroxide solution inlet, and the sodium hydrosulfide storage tank is also communicated with the hydrogen sulfide reactor through a pipeline and a sodium hydrosulfide circulating pump; the ammonia absorption tower is also communicated with the heat exchanger through a material pipeline and a heat exchanger circulating pump.
8. The processing system of claim 1, wherein the reaction material separation and drying system comprises a five-stage vacuum belt conveyor, and a material outlet of the five-stage vacuum belt conveyor is connected with an aluminum ash dryer;
a liquid outlet of a mother liquid area of the five-section vacuum belt conveyor is communicated with a mother liquid storage tank, a first-stage spraying area is communicated with a first-stage spraying area washing liquid storage tank, a second-stage spraying area is communicated with a second-stage spraying area washing liquid storage tank, a third-stage spraying area is communicated with a third-stage spraying area washing liquid storage tank, and a fourth-stage spraying area and a drying area are communicated with a fourth-stage spraying area washing liquid storage tank; an outlet of the mother liquor storage tank is communicated with a precipitation tank, an outlet of the precipitation tank is communicated with a strong brine tank, and the strong brine tank is communicated with a strong brine evaporation and crystallization system; and the first-stage spraying area washing liquid storage tank and the third-stage spraying area washing liquid storage tank are communicated with the saline mixing tank.
9. The treatment system of claim 8, wherein the secondary spray area cleaning solution storage tank and the quaternary spray area cleaning solution storage tank are communicated with a spraying device of the five-section vacuum belt conveyor through a conveying pipeline; the settling tank is also communicated with a feed inlet of the five-section vacuum belt conveyor through a material pipeline.
10. The treatment system according to any one of claims 8 to 9, wherein the brine mixing tank is further communicated with the stirring tank through a material pipeline, and the solution in the brine mixing tank is conveyed into the stirring tank for recycling.
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| CN111994928A (en) * | 2020-08-29 | 2020-11-27 | 河南明泰科技发展有限公司 | Aluminum ash recycling system and processing method thereof |
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| CN111994928A (en) * | 2020-08-29 | 2020-11-27 | 河南明泰科技发展有限公司 | Aluminum ash recycling system and processing method thereof |
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