CN108396150A - A kind of secondary recovery product line device of aluminium lime-ash - Google Patents
A kind of secondary recovery product line device of aluminium lime-ash Download PDFInfo
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- CN108396150A CN108396150A CN201810081623.4A CN201810081623A CN108396150A CN 108396150 A CN108396150 A CN 108396150A CN 201810081623 A CN201810081623 A CN 201810081623A CN 108396150 A CN108396150 A CN 108396150A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0007—Preliminary treatment of ores or scrap or any other metal source
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0038—Obtaining aluminium by other processes
- C22B21/0069—Obtaining aluminium by other processes from scrap, skimmings or any secondary source aluminium, e.g. recovery of alloy constituents
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The present invention is a kind of secondary recovery product line device of aluminium lime-ash, includes mainly ball-milling device, knockout drum, aluminium ash separator, cleaning/drying unit, reaction kettle, filter device, high-temperature calcination stove, electrolytic cell, negative blower fan apparatus, dust-extraction unit and PLC automatic controllers；The ball-milling device outlet is connect by conduit with knockout drum entrance；The aluminium ash separator inlet is connected by conduit and knockout drum outlet, and the dust-extraction unit is arranged in aluminium ash separator upper port；The reaction kettle includes reaction kettle one, reaction kettle two and reaction kettle three；The filter device includes filter device one, filter device two and filter device three；Electrical installation is connected by conducting wire used in the PLC automatic controller devices；The present invention can effectively economize on resources, and to the greatest extent recycle aluminium lime-ash, resources utilization degree higher.
Description
Technical field
The invention belongs to industrial waste utilization technology fields, are produced more particularly to a kind of secondary recovery of aluminium lime-ash
Line apparatus.
Background technology
As the production scale of China's metallic aluminium and aluminium alloy constantly expands, drastically increasing also occurs in the yield of aluminium lime-ash
It is long.Aluminium lime-ash is that a kind of important waste, wherein aluminium content can reach 10-80% in aluminum i ndustry.As aluminium ash slag ingredient is multiple
Miscellaneous, aluminium oxide therein belongs to the AL for being insoluble in soda acid2O3, it is difficult to recycle using general metallurgical method, so aluminium lime-ash is usual
It is used as the raw materials for production of road-making material, water purification agent etc..This virtually wastes bauxite resource therein.Recycle the aluminium in aluminium lime-ash
Resource can reduce cost, environmental protection, energy saving and raising resource utilization, there is huge economy and social effect.
Since aluminium lime-ash belongs to poisonous and harmful substance, current direct landfill method causes significant damage to environment.Aluminium lime-ash
In poisoning metal element (Se, As, Ba, Cd, Cr, Pb etc.) enter soil and groundwater system can cause heavy metal pollution etc.；
Salinity aggregation in salt-cake can lead to salinization of soil in the soil；Ammonia, hydrogen and methane are will produce after contact water, easily causes fire
Calamity；The arsine gas that the impurity such as arsenic and aluminium arsenide therein generate after being reacted with water not only pollutes after being enriched in Workplace
Air can also cause the acute hydrogen arsenide poisoning of Close contacts, and the aluminium lime-ash in factory often contains industrial greasy dirt etc., if
It does not remove, influences whether the utilization of aluminium lime-ash.Therefore, the economical and effective method for efficiently utilizing and administering aluminium lime-ash is found, it is real
The Efficient Cycle of existing aluminium secondary resource, which utilizes, has great significance to the sustainable development and environmental protection of aluminum i ndustry.
Aluminium and aluminium alloy are that current applications are very extensive, most economical applicable one of material.World aluminum yield is from 1956
Year begins to exceed copper yield and occupies always first of non-ferrous metal.The yield and dosage (being calculated by ton) of current aluminium are only second to steel, at
For the second largest metal of mankind's application；Meanwhile data show that China is the maximum alumina producing state in the whole world, global oxygen in 2010
It is 5635.50 ten thousand tons to change aluminium yield, and Chinese aluminium oxide yield increases by 20.14% on a year-on-year basis up to 2895.50 ten thousand tons, accounts for global proportion
It is 51.38%.Chinese aluminium oxide Apparent con- sumption in 2010 has reached 33,210,000 tons, annual growth 14.05%, net importation
4260000 tons, bauxite import volume is up to 30,190,000 tons, external dependence degree 39.71%, and aluminium oxide external dependence degree is up to 47.26%.
With the fast development of the industries such as China's electrolytic aluminium, ceramics, medicine, electronics, machinery, market is to aluminium oxide demand
Still there are larger growth space, aluminium oxide yield that will constantly increase.In conjunction with the Chinese aluminium oxide yield datas of 2005-2010,
It is expected that Chinese aluminium oxide yield in 2011 is up to 33,000,000 tons, growth rate 14%, 2012 on the basis of 2011 after
Continuous to increase, yield is more than 38,000,000 tons.
So therefore it is existing be badly in need of device that aluminium lime-ash secondary recovery recycling produces solving the deficiencies in the prior art,
Reach resources utilization degree height, pollution it is small, it is efficient the advantages that.
Invention content
For the above technical problem, a kind of pollution of present invention offer is small, and the used time is short, the secondary recovery of efficient aluminium lime-ash
Product line device.
The technical scheme is that：A kind of secondary recovery product line device of aluminium lime-ash includes mainly ball-milling device, divides
From tank, aluminium ash separator, cleaning/drying unit, reaction kettle, filter device, high-temperature calcination stove, electrolytic cell, negative blower fan apparatus, remove
Dirt device and PLC automatic controllers；The ball-milling device outlet is connect by conduit with knockout drum entrance, the knockout drum bottom
It is provided with alumina particles outlet；The aluminium ash separator inlet is connected by conduit and knockout drum outlet, the dust-extraction unit setting
In aluminium ash separator upper port；Aluminium lime-ash after the negative blower fan apparatus is used to grind ball-milling device sucks knockout drum, will divide
Aluminium ash separator is sucked from the aluminium lime-ash after being detached in tank；Cleaning/the drying unit by conveyor-belt apparatus and aluminium ash content from
The lower port of device connects；The reaction kettle includes reaction kettle one, reaction kettle two and reaction kettle three；The filter device includes filtering
Device one, filter device two and filter device three；The outlet that the reaction kettle one passes through conveyor-belt apparatus and cleaning/drying unit
Connection, the filter device one are connect by conduit with reaction kettle one, pass through biography by one filtered aluminium lime-ash of filter device
Work-feeding means enter the reaction kettle three, and the filter device three is connect by conduit with reaction kettle three, by filter device three
Filtered aluminium ash enters electrolytic cell by conveyor-belt apparatus；The reaction kettle two is filled by conveyor-belt apparatus and cleaning/drying
The outlet connection set, the filter device two are connect by conduit with reaction kettle two, by filter device two filtered aluminium ash
Slag enters the high-temperature calcination stove by conveyor-belt apparatus, product after high-temperature calcination stove is calcined by conveyor-belt apparatus into
Enter electrolytic cell；The reaction kettle one includes motor, speed reducer, cylinder, upper capping, external disk, chuck, heating tube, agitating paddle；It is described
Motor is arranged in upper capping upper end, and motor provides power for agitating paddle, and the speed reducer is arranged in the connecting rod of motor, described
Sealing device is provided at motor and upper closure contacts, the cylinder is arranged below upper capping, and the external disk package setting exists
Outside cylinder, the folder is set between cylinder and external disk, and the heating tube is arranged in external disk lower end, and heating tube heating head
It is arranged in cylinder, the agitating paddle is arranged in inner barrel；The PLC automatic controller devices and ball-milling device, knockout drum,
Aluminium ash separator, cleaning/drying unit, reaction kettle, filter device, high-temperature calcination stove, electrolytic cell, negative blower fan apparatus, dedusting dress
It sets, gas treatment equipment connection.
Further, electrolytic cell is aluminium electrolytic tank device, including anode, cathode plate and electrolytic cell ontology, the electrolytic cell
Body interior is provided with heating device, blender and temperature control device；The anode uses metal aluminium net, anode to be arranged in electrolytic cell
The right side of ontology, the cathode plate are arranged in the left side of electrolytic cell ontology, and there are two the heating devices, is separately positioned on anode
On the left of right side and cathode plate, the blender setting is located in electrolytic cell body interior at electrolytic cell ontology chamber central, described
Temperature control device is arranged on electrolytic cell ontology, and the temperature control head of temperature control device is arranged in electrolytic cell ontology；It is arranged in a cell
Heating device and agitating device can improve operating efficiency, accelerate electrolysis rate.
Further, reaction kettle, high-temperature calcination stove, gas treatment equipment, the gas treatment dress are provided on electrolytic cell
It sets including outer housing, air entry, exhaust outlet, suction ventilator, separating plate, the first activated carbon core and the second activated carbon core；The air-breathing
Mouth is arranged in outer housing lower port；The exhaust outlet is arranged in outer housing upper port；The suction ventilator is set to the interior of outer housing
Portion is located at center；The separating plate is arranged after air entry；The first activated carbon core is arranged after separating plate, package
On the outside of suction ventilator；The second activated carbon core setting is in exhaust outlet lower end, and the second activated carbon core is to be detachably connected；Gas
Processing unit is discharged after capable of effectively being handled the exhaust gas in operation, avoids the secondary pollution to environment.
A kind of method of the secondary recovery of aluminium lime-ash, includes the following steps：
S1：Aluminium lime-ash grinds, screens and cleans：
Aluminium lime-ash input ball-milling device is subjected to grinding treatment, then passes through knockout drum respectively and exports alumina particles from alumina particles
It isolates, it will be in dust separation to dust-extraction unit by aluminium ash separator；Aluminium lime-ash after separation enter cleaning/drying unit into
Row cleaning, drying；
S2：Prepare aluminium oxide：
The hydrochloric acid solution that first and mass concentration is 25-35% in reaction kettle two by the aluminium lime-ash powder after cleaning, drying
It is 6ml by liquid-solid ratio:1g mixing carries out acidleach processing, obtains pickle liquor；It is 20-25% that mass concentration is added in pickle liquor again
Hydrogen peroxide, the volume ratio of pickle liquor and hydrogen peroxide is 25-30:1；NaOH solution is added to adjust pH value to 9-9.5, is obtained
It is enriched with NaAlO2Solution；Excessive CO is passed through in the solution2；Then pass through the precipitation that the separation of filter device two obtains；
It is 800~1000 DEG C that high-temperature calcination stove, which will be finally deposited in, according to temperature, and calcination time is that 30~45min is calcined, and is obtained
Aluminium oxide, for use；
S3：Aluminium is grey after preparing acidleach：
The hydroxide that first and solution concentration is 100-140g/L in reaction kettle one by the aluminium lime-ash powder after cleaning, drying
Sodium solution is 5ml by liquid-solid ratio:After 1g mixing, it is stirred；Aluminium ash and alkali after alkali soaks is obtained by filtration using filter device one
Wash waste liquid；Aluminium ash is 4.5ml by liquid-solid ratio in the hydrochloric acid solution of reaction kettle three and a concentration of 20-30% after the alkali is soaked:1g
After mixing, it is stirred acidleach；Aluminium ash and pickle liquor after acidleach is obtained by filtration by filter device three, by aluminium ash after acidleach
For use；
S4：Electrolysis：
Aluminium ash is 150-300 according to mass ratio after the acidleach that aluminium oxide that S2 is obtained is obtained with S3:1 mix it is latter
It rises and is put into electrolytic cell and is electrolysed.
Further, the aluminium lime-ash that grain size is less than 150 mesh is obtained after grinding treatment described in S1；The particle size of the range exists
Effect under low smelting heat is better than the aluminium lime-ash of other particle sizes, can accelerate the reaction time, improves reaction efficiency.
Further, then acidleach processing described in S2 carries out solid-liquid for will stir 45min after aluminium lime-ash powder immersion hydrochloric acid
Separation, obtains pickle liquor；Sulfuric acid is replaced with hydrochloric acid, avoids secondary pollution caused by the hydrogen sulfide gas generated in operation process.
Further, pickle liquor described in S3 and alkali-washing waste liquid carry out after effectively neutralizing evaporation, recycle Fe3+、Fe2+、Mg2 +Equal effective ions；More fully by product recycling, at the same also avoid because processing waste liquid and need other at
This cost.
Compared with prior art, beneficial effects of the present invention are：The gas treatment equipment of the present invention can be effectively to making
Exhaust gas in industry is handled, and the secondary pollution to environment is avoided；Aluminium lime-ash is used different production procedures by the present invention simultaneously
It recycles respectively, can finally obtain the molten aluminum that quality meets aluminium ingot requirement so that the utilization of aluminium lime-ash is more abundant, more
It is effective to have saved resource, at the same in operation pickle liquor and alkali-washing waste liquid neutralize, not only avoid useless because handling
Significant cost caused by liquid, at the same can more effectively in Recycling of waste liquid salinity.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of the reaction kettle one of the present invention；
Fig. 3 is the structural schematic diagram of the electrolytic cell of the present invention；
Fig. 4 is the structural schematic diagram of the gas treatment equipment of the present invention；
Wherein, 1- ball-milling devices, 2- knockout drums, the outlet of 20- alumina particles, 3- aluminium ashes separator, 4- cleanings/drying unit,
51- reaction kettles one, 511- motors, 512- speed reducers, 513- cylinders, capping, 515- external disks, 516- chucks, 517- add on 514-
Heat pipe, 518- agitating paddles, 52- reaction kettles two, 53- reaction kettles three, 61- filter devices one, 62- filter devices two, 63- filtering dresses
Three, 7- high-temperature calcination stoves, 8- electrolytic cells, 81- anodes, 82- cathode plates, 83- electrolytic cells ontology, 84- heating devices, 85- is set to stir
It mixes device, 86- temperature control devices, 9- and bears blower fan apparatus, 10- dust-extraction units, 11- gas treatment equipments, 111- outer housings, 112- suctions
Gas port, 113- exhaust outlets, 114- suction ventilators, 115- separating plates, the first activated carbons of 116- core, 117- the second activated carbon cores.
Specific implementation mode
Embodiment 1：A kind of secondary recovery product line device of aluminium lime-ash as shown in Figs 1-4 includes mainly ball-milling device
1, knockout drum 2, aluminium ash separator 3, cleaning/drying unit 4, reaction kettle, filter device, high-temperature calcination stove 7, electrolytic cell 8, negative wind
Machine device 9, dust-extraction unit 10 and PLC automatic controllers；The outlet of ball-milling device 1 is connect by conduit with 2 entrance of knockout drum, is detached
2 bottom of tank is provided with alumina particles outlet 20；3 entrance of aluminium ash separator is connected by conduit and the outlet of knockout drum 2, dust-extraction unit 10
It is arranged in 3 upper port of aluminium ash separator；Negative blower fan apparatus 9 be used to grind ball-milling device 1 after aluminium lime-ash sucking knockout drum 2,
Aluminium lime-ash sucking aluminium ash separator 3 after being detached in knockout drum 2；Cleaning/drying unit 4 passes through conveyor-belt apparatus and aluminium ash content
Lower port connection from device 3；Reaction kettle includes reaction kettle 1, reaction kettle 2 52 and reaction kettle 3 53；Filter device included
Filter device 1, filter device 2 62 and filter device 3 63；Reaction kettle 1 passes through conveyor-belt apparatus and cleaning/drying unit
4 outlet connection, filter device 1 are connect by conduit with reaction kettle 1, by filter device one 61 filtered aluminium ash
Slag enters reaction kettle 3 53 by conveyor-belt apparatus, and filter device 3 63 is connect by conduit with reaction kettle 3 53, by filtering
3 63 filtered aluminium ash of device enters electrolytic cell 8 by conveyor-belt apparatus；Reaction kettle 2 52 by conveyor-belt apparatus with cleaning/
The outlet of drying unit 4 connects, and filter device 2 62 is connect by conduit with reaction kettle 2 52, is filtered by filter device 2 62
Aluminium lime-ash afterwards enters high-temperature calcination stove 7 by conveyor-belt apparatus, and the product after the calcining of high-temperature calcination stove 7 passes through conveyer belt
Device enters electrolytic cell 8；Reaction kettle, high-temperature calcination stove 7 are provided with gas treatment equipment 11, gas treatment equipment on electrolytic cell 8
11 include outer housing 111, air entry 112, exhaust outlet 113, suction ventilator 114, separating plate 115, the first activated carbon core 116 and second
Activated carbon core 117；Air entry 112 is arranged in 111 lower port of outer housing；Exhaust outlet 113 is arranged in 111 upper port of outer housing；It inhales
Wind turbine 114 is set to the inside of outer housing 111, is located at center；Separating plate 115 is arranged after air entry 112；First activity
Charcoal core 116 is arranged after separating plate 115, is wrapped in 114 outside of suction ventilator；Second activated carbon core 117 is arranged under exhaust outlet 113
End, and the second activated carbon core 117 is to be detachably connected；Gas treatment equipment 11 can effectively will be at the exhaust gas in operation
It is discharged after reason, avoids the secondary pollution to environment；Reaction kettle 1 includes motor 511, speed reducer 512, cylinder 513, upper envelope
Lid 514, external disk 515, chuck 516, heating tube 517, agitating paddle 518；Motor 511 is arranged in 514 upper ends of upper capping, motor 511
Power is provided for agitating paddle 518, speed reducer 512 is arranged in the connecting rod of motor 511, motor 511 and 514 contact positions of upper capping
It is provided with sealing device 5140, the setting of cylinder 513 is below upper capping 514, and the package of external disk 515 is arranged outside cylinder 513, folder
Set 516 is arranged between cylinder 513 and external disk 515, and heating tube 517 is arranged in 515 lower end of external disk, and 517 heating head of heating tube
It is arranged in cylinder 513, agitating paddle 518 is arranged inside cylinder 513；Electrolytic cell 8 be aluminium electrolytic tank device, including anode 81,
Cathode plate 82 and electrolytic cell ontology 83, electrolytic cell ontology 83 are internally provided with heating device 84, blender 85 and temperature control device 86；
Anode 81 uses metal aluminium net, anode 81 to be arranged on the right side of electrolytic cell ontology 83, and cathode plate 82 is arranged in electrolytic cell ontology 83
Left side, there are two heating devices 84, is separately positioned on 82 left side of the right side of anode 81 and cathode plate, and the setting of blender 85 is being electrolysed
Inside slot ontology 83, it is located at 83 chamber central of electrolytic cell ontology, temperature control device 86 is arranged on electrolytic cell ontology 83, temperature control dress
Set 86 temperature control head be arranged in electrolytic cell ontology 83；Heating device 84 and agitating device 85 are arranged in a cell to be improved
Operating efficiency accelerates electrolysis rate；PLC automatic controller devices and ball-milling device 1, knockout drum 2, aluminium ash separator 3, cleaning/
Drying unit 4, reaction kettle, filter device, high-temperature calcination stove, electrolytic cell, negative blower fan apparatus 9, dust-extraction unit 10, gas treatment dress
Set 11 connections.
A kind of method of the secondary recovery of aluminium lime-ash, includes the following steps：
S1：Aluminium lime-ash grinds, screens and cleans：
Aluminium lime-ash input ball-milling device 1 is subjected to grinding treatment, then respectively goes out alumina particles from alumina particles by knockout drum 2
Mouth 20 is isolated, will be in dust separation to dust-extraction unit 10 by aluminium ash separator 3；Aluminium lime-ash after separation enters cleaning/baking
Equipment for drying 4 is cleaned, is dried；
S2：Prepare aluminium oxide：
The hydrochloric acid solution that aluminium lime-ash powder after cleaning, drying is first 25% with mass concentration in reaction kettle 2 52 is pressed
Liquid-solid ratio is 6ml:1g mixing carries out acidleach processing, obtains pickle liquor；Pair that mass concentration is 20% is added in pickle liquor again
The volume ratio of oxygen water, pickle liquor and hydrogen peroxide is 25:1；NaOH solution is added to adjust pH value to 9, is enriched with
NaAlO2Solution；Excessive CO is passed through in the solution2；Then pass through the precipitation that the separation of filter device 2 62 obtains；Finally
It is 800 DEG C that high-temperature calcination stove 7, which will be deposited in, according to temperature, and calcination time is that 30min is calcined, and obtains aluminium oxide, for use；
S3：Aluminium is grey after preparing acidleach：
The sodium hydroxide that first and solution concentration is 100g/L in reaction kettle 1 by the aluminium lime-ash powder after cleaning, drying
Solution is 5ml by liquid-solid ratio:After 1g mixing, it is stirred；Aluminium ash and alkali after alkali soaks is obtained by filtration using filter device 1
Wash waste liquid；It is 4.5ml that aluminium ash presses liquid-solid ratio in the hydrochloric acid solution of reaction kettle 3 53 and a concentration of 20% after the alkali is soaked:1g is mixed
After conjunction, it is stirred acidleach；Aluminium ash and pickle liquor after acidleach is obtained by filtration by filter device 3 63, by aluminium ash after acidleach
For use；
S4：Electrolysis：
Aluminium ash is 150 according to mass ratio after the acidleach that aluminium oxide that S2 is obtained is obtained with S3:1 mixed after put together
Enter electrolytic cell 8 to be electrolysed.
Wherein, the aluminium lime-ash that grain size is less than 150 mesh is obtained after S1 grinding treatments；The particle size of the range is in low smelting heat
Under effect be better than other particle sizes aluminium lime-ash, can accelerate the reaction time, improve reaction efficiency；S2 acidleach processing is by aluminium
Lime-ash powder stirs 45min after immersing hydrochloric acid, is then separated by solid-liquid separation, obtains pickle liquor；Sulfuric acid is replaced with hydrochloric acid, avoids making
Secondary pollution caused by the hydrogen sulfide gas generated during industry；Pickle liquor and alkali-washing waste liquid carry out effectively neutralizing evaporation in S3
Afterwards, Fe is recycled3+、Fe2+、Mg2+Equal effective ions；More fully by product recycling, while also avoiding because processing is useless
Other cost prices abandoned liquid and needed.
Embodiment 2：Difference from Example 1 is that a kind of method of the secondary recovery of aluminium lime-ash is：
S1：Aluminium lime-ash grinds, screens and cleans：
Aluminium lime-ash input ball-milling device 1 is subjected to grinding treatment, then respectively goes out alumina particles from alumina particles by knockout drum 2
Mouth 20 is isolated, will be in dust separation to dust-extraction unit 10 by aluminium ash separator 3；Aluminium lime-ash after separation enters cleaning/baking
Equipment for drying 4 is cleaned, is dried；
S2：Prepare aluminium oxide：
The hydrochloric acid solution that aluminium lime-ash powder after cleaning, drying is first 30% with mass concentration in reaction kettle 2 52 is pressed
Liquid-solid ratio is 6ml:1g mixing carries out acidleach processing, obtains pickle liquor；Pair that mass concentration is 23% is added in pickle liquor again
The volume ratio of oxygen water, pickle liquor and hydrogen peroxide is 28:1；NaOH solution is added to adjust pH value to 9-9.5, is enriched with
NaAlO2Solution；Excessive CO is passed through in the solution2；Then pass through the precipitation that the separation of filter device 2 62 obtains；Finally
It is 900 DEG C that high-temperature calcination stove 7, which will be deposited in, according to temperature, and calcination time is that 40min is calcined, and obtains aluminium oxide, for use；
S3：Aluminium is grey after preparing acidleach：
The sodium hydroxide that first and solution concentration is 120g/L in reaction kettle 1 by the aluminium lime-ash powder after cleaning, drying
Solution is 5ml by liquid-solid ratio:After 1g mixing, it is stirred；Aluminium ash and alkali after alkali soaks is obtained by filtration using filter device 1
Wash waste liquid；It is 4.5ml that aluminium ash presses liquid-solid ratio in the hydrochloric acid solution of reaction kettle 3 53 and a concentration of 25% after the alkali is soaked:1g is mixed
After conjunction, it is stirred acidleach；Aluminium ash and pickle liquor after acidleach is obtained by filtration by filter device 3 63, by aluminium ash after acidleach
For use；
S4：Electrolysis：
Aluminium ash is 230 according to mass ratio after the acidleach that aluminium oxide that S2 is obtained is obtained with S3:1 mixed after put together
Enter electrolytic cell 8 to be electrolysed.
Embodiment 3：Difference from Example 1 is that a kind of method of the secondary recovery of aluminium lime-ash is：
S1：Aluminium lime-ash grinds, screens and cleans：
Aluminium lime-ash input ball-milling device 1 is subjected to grinding treatment, then respectively goes out alumina particles from alumina particles by knockout drum 2
Mouth 20 is isolated, will be in dust separation to dust-extraction unit 10 by aluminium ash separator 3；Aluminium lime-ash after separation enters cleaning/baking
Equipment for drying 4 is cleaned, is dried；
S2：Prepare aluminium oxide：
The hydrochloric acid solution that aluminium lime-ash powder after cleaning, drying is first 35% with mass concentration in reaction kettle 2 52 is pressed
Liquid-solid ratio is 6ml:1g mixing carries out acidleach processing, obtains pickle liquor；Pair that mass concentration is 25% is added in pickle liquor again
The volume ratio of oxygen water, pickle liquor and hydrogen peroxide is 30:1；NaOH solution is added to adjust pH value to 9.5, is enriched with
NaAlO2Solution；Excessive CO is passed through in the solution2；Then pass through the precipitation that the separation of filter device 2 62 obtains；Finally
It is 1000 DEG C that high-temperature calcination stove 7, which will be deposited in, according to temperature, and calcination time is that 45min is calcined, and obtains aluminium oxide, for use；
S3：Aluminium is grey after preparing acidleach：
The sodium hydroxide that first and solution concentration is 140g/L in reaction kettle 1 by the aluminium lime-ash powder after cleaning, drying
Solution is 5ml by liquid-solid ratio:After 1g mixing, it is stirred；Aluminium ash and alkali after alkali soaks is obtained by filtration using filter device 1
Wash waste liquid；It is 4.5ml that aluminium ash presses liquid-solid ratio in the hydrochloric acid solution of reaction kettle 3 53 and a concentration of 30% after the alkali is soaked:1g is mixed
After conjunction, it is stirred acidleach；Aluminium ash and pickle liquor after acidleach is obtained by filtration by filter device 3 63, by aluminium ash after acidleach
For use；
S4：Electrolysis：
Aluminium ash is 300 according to mass ratio after the acidleach that aluminium oxide that S2 is obtained is obtained with S3:1 mixed after put together
Enter electrolytic cell 8 to be electrolysed.
The result shows that the present invention effectively raises the utilization rate of aluminium lime-ash to 85-90%；Aluminium lime-ash is set to have obtained more
It adequately utilizes, has many advantages, such as that raw material sources are wide, environmental pollution is small, low energy consumption for material consumption, at low cost, be suitable for industrial metaplasia
Production.And the quality of the molten aluminum of institute's output of the present invention meets the requirement of aluminium ingot.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in previous embodiment or equivalent replacement of some of the technical features；And
These modifications or replacements, the spirit and model of technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (7)
1. a kind of secondary recovery product line device of aluminium lime-ash, which is characterized in that include mainly ball-milling device (1), knockout drum
(2), aluminium ash separator (3), cleaning/drying unit (4), reaction kettle, filter device, high-temperature calcination stove (7), electrolytic cell (8), negative
Blower fan apparatus (9), dust-extraction unit (10) and PLC automatic controllers；Ball-milling device (1) outlet passes through conduit and knockout drum
(2) entrance connects, and knockout drum (2) bottom is provided with alumina particles outlet (20)；Aluminium ash separator (3) entrance is by leading
Pipe is connected with knockout drum (2) outlet, and the dust-extraction unit (10) is arranged in aluminium ash separator (3) upper port；The negative wind turbine dress
Set (9) for after ball-milling device (1) is ground aluminium lime-ash sucking knockout drum (2), by the aluminium lime-ash after separation in knockout drum (2)
Suck aluminium ash separator (3)；Cleaning/the drying unit (4) is connected by the lower port of conveyor-belt apparatus and aluminium ash separator (3)
It connects；The reaction kettle includes reaction kettle one (51), reaction kettle two (52) and reaction kettle three (53)；The filter device includes filtering
Device one (61), filter device two (62) and filter device three (63)；The reaction kettle one (51) is by conveyor-belt apparatus and clearly
/ the outlet of drying unit (4) connection is washed, the filter device one (61) is connect with reaction kettle one (51) by conduit, passed through
It filters device one (61) filtered aluminium lime-ash and the reaction kettle three (53), the filter device three is entered by conveyor-belt apparatus
(63) connect with reaction kettle three (53) by conduit, by the filtered aluminium ash of filter device three (63) by conveyor-belt apparatus into
Enter electrolytic cell (8)；The reaction kettle two (52) is connect by conveyor-belt apparatus with the outlet of cleaning/drying unit (4), the mistake
Filter device two (62) is connect by conduit with reaction kettle two (52), passes through biography by the filtered aluminium lime-ash of filter device two (62)
Work-feeding means enter the high-temperature calcination stove (7), and the product after high-temperature calcination stove (7) calcining is entered by conveyor-belt apparatus
Electrolytic cell (8)；The reaction kettle one (51) includes motor (511), speed reducer (512), cylinder (513), upper capping (514), outer
Disk (515), chuck (516), heating tube (517), agitating paddle (518)；The motor (511) is arranged in upper capping (514) upper end,
Motor (511) is that agitating paddle (518) provides power, and the speed reducer (512) is arranged in the connecting rod of motor (511), described
Motor (511) is provided with sealing device (5140) with upper capping (514) contact position, and the cylinder (513) is arranged in upper capping
(514) lower section, the setting of the external disk (515) package is external in cylinder (513), chuck (516) setting cylinder (513) with
Between external disk (515), heating tube (517) setting is in external disk (515) lower end, and heating tube (517) heating head is arranged in cylinder
In body (513), agitating paddle (518) setting is internal in cylinder (513)；The PLC automatic controller devices and ball-milling device
(1), knockout drum (2), aluminium ash separator (3), cleaning/drying unit (4), reaction kettle, filter device, high-temperature calcination stove, electrolysis
Slot, negative blower fan apparatus (9), dust-extraction unit (10), gas treatment equipment (11) connection.
2. a kind of secondary recovery product line device of aluminium lime-ash as claimed in claim 2, which is characterized in that the electrolytic cell
(8) it is aluminium electrolytic tank device, including anode (81), cathode plate (82) and electrolytic cell ontology (83), the electrolytic cell ontology (83)
It is internally provided with heating device (84), blender (85) and temperature control device (86)；The anode (81) uses metal aluminium net, anode
(81) setting is on the right side of electrolytic cell ontology (83), and cathode plate (82) setting is described in the left side of electrolytic cell ontology (83)
There are two heating devices (84), is separately positioned on the right side of anode (81) and on the left of cathode plate (82), blender (85) setting
It is internal in electrolytic cell ontology (83), it is located at electrolytic cell ontology (83) chamber central, temperature control device (86) setting is being electrolysed
On slot ontology (83), the temperature control head setting of temperature control device (86) is in electrolytic cell ontology (83).
3. a kind of method of the secondary recovery of aluminium lime-ash, which is characterized in that include the following steps：
S1：Aluminium lime-ash grinds, screens and cleans：
Aluminium lime-ash input ball-milling device (1) is subjected to grinding treatment, then respectively goes out alumina particles from alumina particles by knockout drum (2)
Mouthful (20) are isolated, will be in dust separation to dust-extraction unit (10) by aluminium ash separator (3)；Aluminium lime-ash after separation enters clear
Wash/drying unit (4) cleaned, dried；
S2：Prepare aluminium oxide：
The hydrochloric acid solution that first and mass concentration is 25-35% in reaction kettle two (52) by the aluminium lime-ash powder after cleaning, drying
It is 6ml by liquid-solid ratio:1g mixing carries out acidleach processing, obtains pickle liquor；It is 20-25% that mass concentration is added in pickle liquor again
Hydrogen peroxide, the volume ratio of pickle liquor and hydrogen peroxide is 25-30:1；NaOH solution is added to adjust pH value to 9-9.5, is obtained
It is enriched with NaAlO2Solution；Excessive CO is passed through in the solution2；Then pass through what filter device two (62) separation obtained
Precipitation；It is 800~1000 DEG C that high-temperature calcination stove (7), which will be finally deposited in, according to temperature, and calcination time is that 30~45min is forged
It burns, obtains aluminium oxide, for use；
S3：Aluminium is grey after preparing acidleach：
The hydroxide that first and solution concentration is 100-140g/L in reaction kettle one (51) by the aluminium lime-ash powder after cleaning, drying
Sodium solution is 5ml by liquid-solid ratio:After 1g mixing, it is stirred；Aluminium is grey after alkali leaching is obtained by filtration using filter device one (61)
And alkali-washing waste liquid；Aluminium ash is by liquid-solid ratio in reaction kettle three (53) and the hydrochloric acid solution of a concentration of 20-30% after the alkali is soaked
4.5ml:After 1g mixing, it is stirred acidleach；Aluminium ash and pickle liquor after acidleach is obtained by filtration by filter device three (63),
Aluminium ash after acidleach is for use；
S4：Electrolysis：
Aluminium ash is 150-300 according to mass ratio after the acidleach that aluminium oxide that S2 is obtained is obtained with S3:1 mixed after put together
Enter electrolytic cell (8) to be electrolysed.
4. a kind of method of the secondary recovery of aluminium lime-ash as claimed in claim 3, which is characterized in that after grinding treatment described in S1
Obtain the aluminium lime-ash that grain size is less than 150 mesh.
5. a kind of method of the secondary recovery of aluminium lime-ash as claimed in claim 3, which is characterized in that acidleach described in S2, which is handled, is
45min is stirred after aluminium lime-ash powder is immersed hydrochloric acid, is then separated by solid-liquid separation, obtains pickle liquor.
6. a kind of method of the secondary recovery of aluminium lime-ash as claimed in claim 3, which is characterized in that electrolysis is using aluminium electricity in S4
Solution slot device is electrolysed.
7. a kind of method of the secondary recovery of aluminium lime-ash as claimed in claim 3, which is characterized in that pickle liquor described in S3
It is carried out after effectively neutralizing evaporation with alkali-washing waste liquid, recycles effective salinity.
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| CN110526268A (en) * | 2019-03-26 | 2019-12-03 | 河南科技大学 | A kind of recycling aluminium electroloysis aluminium ash preparation α-Al2O3Method |
| CN112111657A (en) * | 2020-09-15 | 2020-12-22 | 江苏海光金属有限公司 | Device for preparing high-purity aluminum by using aluminum ash and using method thereof |
| CN112811451A (en) * | 2020-12-24 | 2021-05-18 | 安溪县世荣有色金属有限公司 | Alumina recovery system and method |
| CN115301692A (en) * | 2022-08-01 | 2022-11-08 | 广东省中环协节能环保产业研究院 | Comprehensive utilization and treatment system for aluminum ash |
| CN116159337A (en) * | 2023-04-23 | 2023-05-26 | 山东金力王实业有限公司 | High-efficient equipment of leaching of aluminium sulfate preparation |
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| CN103555955A (en) * | 2013-11-13 | 2014-02-05 | 昆明冶金研究院 | Resource utilization method of aluminum ash |
| CN203728939U (en) * | 2014-03-12 | 2014-07-23 | 郑州经纬科技实业有限公司 | Resourceful treatment system for aluminum ash |
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| CN103160693A (en) * | 2013-03-12 | 2013-06-19 | 焦作万方铝业股份有限公司 | Method for aluminum ash treatment and recycling use |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110526268A (en) * | 2019-03-26 | 2019-12-03 | 河南科技大学 | A kind of recycling aluminium electroloysis aluminium ash preparation α-Al2O3Method |
| CN112111657A (en) * | 2020-09-15 | 2020-12-22 | 江苏海光金属有限公司 | Device for preparing high-purity aluminum by using aluminum ash and using method thereof |
| CN112811451A (en) * | 2020-12-24 | 2021-05-18 | 安溪县世荣有色金属有限公司 | Alumina recovery system and method |
| CN115301692A (en) * | 2022-08-01 | 2022-11-08 | 广东省中环协节能环保产业研究院 | Comprehensive utilization and treatment system for aluminum ash |
| CN116159337A (en) * | 2023-04-23 | 2023-05-26 | 山东金力王实业有限公司 | High-efficient equipment of leaching of aluminium sulfate preparation |
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| CN108396150B (en) | 2019-06-25 |
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