CN107201451A - A kind of aluminium skimmings isothermal melting unit and production technology - Google Patents
A kind of aluminium skimmings isothermal melting unit and production technology Download PDFInfo
- Publication number
- CN107201451A CN107201451A CN201710455788.9A CN201710455788A CN107201451A CN 107201451 A CN107201451 A CN 107201451A CN 201710455788 A CN201710455788 A CN 201710455788A CN 107201451 A CN107201451 A CN 107201451A
- Authority
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- China
- Prior art keywords
- aluminium
- aluminium skimmings
- liquid
- isothermal
- skimmings
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 121
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 239000004411 aluminium Substances 0.000 title claims abstract description 113
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000005516 engineering process Methods 0.000 title claims abstract description 21
- 238000002844 melting Methods 0.000 title claims abstract description 20
- 230000008018 melting Effects 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 74
- 239000007787 solid Substances 0.000 claims abstract description 40
- 238000003860 storage Methods 0.000 claims abstract description 20
- 239000003546 flue gas Substances 0.000 claims abstract description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000007726 management method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003923 scrap metal Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of aluminium skimmings isothermal melting unit and production technology, equipment includes casing and its closure, conveying worm, aluminium skimmings solid storage box, agitating device, vacuum control system and master controller, production technology, which is mainly, to be realized under vacuum conditions, the fusing of isothermal is carried out to aluminium skimmings solid by aluminium liquid own temperature, and aluminium liquid can continuously flow in the process, production under dynamic vacuum is formd.The present invention is that solid aluminium skimmings anaerobic isothermal is melted using aluminium liquid own temperature under vacuum conditions, the burn out rate of its metal is low, greatly save energy loss, produced flue gas can obtain unified collect and processing, any pollution is not produced to environment, keep vacuum, aluminium liquid continuously to flow and the fusing of aluminium skimmings continuous conveying while meeting, significantly improve production efficiency.
Description
Technical field
Recycling economy, which is reclaimed, the present invention relates to old metal utilizes technical field, more particularly to a kind of aluminium skimmings isothermal melting unit
And production technology.
Background technology
The world today regards waste aluminum recovery as the important topic of one environmental protection, and especially China has 4,000,000 every year
Ton aluminium scrap metal inventories are urgently handled.It is used as the essential industry field of recycling economy --- old metal reclaims and has incorporated country
13 plan key subjects.Close the filthy take-back model of small workshop mode has turned into the important measures that Chinese environmental protection is renovated,
It is also fundamental state policy.China is the big country that an aluminium production is consumed with aluminium, in this state, the big industrial production of environment-friendly type again
The advanced fundamental technology of waste aluminum recovery has been arrived at the time of must arising at the historic moment.
There is two ways to recycle aluminium scrap in the world at present, a kind of is the double chamber furance of Germany, and also one kind is
Stove mode is entered in common side.Both production technologies carry out fusing recycling, the burning of metal under aerobic conditions to aluminium skimmings
Loss rate is very high, and flue gas evacuation therein can not be controlled effectively, and energy loss is also very big.Solve environmental issue, it is necessary to
Aluminium scrap is pre-processed, the preprocess method of this removing top layer residue adds its technological process and processing cost.
The content of the invention
There is provided a kind of aluminium skimmings isothermal melting unit in order to solve the defect and deficiency that above-mentioned prior art is present by the present invention
And production technology, the melt processed removal process of aluminium skimmings solid is under a closed dynamic vacuum state and carried out, reduction
Burn out rate, environmental pollution and energy resource consumption, production cost are low.
To reach above-mentioned purpose, the technical solution adopted by the present invention is as follows：
A kind of aluminium skimmings isothermal melting unit, including casing and its closure, conveying worm, aluminium skimmings solid storage box, stirring dress
Put, vacuum control system and master controller, casing lower edge, which is provided with two, is used for the import and export that aluminium liquid flows, side where importing and exporting
Casing outside be provided with chute, positioned at two import and export between chute in be provided with middle pneumatic flashboard, positioned at two turnover
The pneumatic flashboard of import and export is provided with one or both sides chute outside mouthful；The vacuum control system include vacuum generator,
Compressed air source and gas control unit, the casing and its closure, conveying worm and aluminium skimmings solid storage box form close
Space is sealed, and vacuum is formed by vacuum control system.The delivery end outlet of conveying worm and agitating device are all located at sealing
Cover, the movable end of agitating device is extended vertically into casing through closure, prevents aluminium skimmings to be suspended in the table of vacuum aluminum melting liquid
Layer cannot fully melt.Conveying worm, agitating device, vacuum control system etc. that can be in monitoring device by master controller
Device.
Preferably, being used to detect the liquid level in the casing and transmitting a signal to provided with laser liquid-level measurement instrument
Master controller, records display in master controller, is easy to monitoring management in real time.
Preferably, being used to detect the negative pressure value in sealing space provided with B/P EGR Back Pressure Transducer EGR and transmitting a signal to main control
Device, records display in master controller, is easy to monitoring management in real time.
Preferably, be provided with dividing plate in casing between two import and export, dividing plate is by casing internal partition institute
Space be separated into two parts, the aluminium liquid needs that its meaning is to make import and export to flow into are flowed up, aluminium skimmings all the time with temperature
Higher new aluminium liquid contact melting, then declines from another import and export outflow.
A kind of aluminium skimmings isothermal melts production technology, make use of above-mentioned melting unit, the production technology includes：
Step 1, aluminium skimmings solid to be melted is loaded after aluminium skimmings solid storage box and aluminium skimmings solid storage box is sealed.
Step 2, middle pneumatic flashboard opened by master controller, closes the pneumatic flashboard of import and export of chute wherein side,
The aluminium liquid of high temperature flows into and through two and imported and exported from chute opposite side to be entered in casing.
Step 3, after laser liquid-level measurement instrument detects the liquid level of aluminium liquid higher than the height imported and exported, that is, form liquid
Envelope, makes casing by way of vacuum jet --- the vacuum state of the sealing space formation negative pressure in aluminium skimmings solid storage box,
The liquid level of aluminium liquid gradually rises in casing.
Step 4, when laser liquid-level measurement instrument detect aluminium liquid liquid level reach setting height after, master controller start spiral
Conveyer, which falls into the aluminium skimmings Solid Conveying and Melting in aluminium skimmings solid storage box in the aluminium liquid in casing, to be melted, while starting stirring dress
Put.
Step 5, the detection by B/P EGR Back Pressure Transducer EGR and the control of master controller, the vacuum generator of vacuum control system,
Compressed air source and gas control unit control negative pressure value in setting range.
Step 6, pass through master controller and close middle pneumatic flashboard, open and import and export pneumatic flashboard, the wherein side of chute
Flowed out for aluminium liquid, opposite side flows into for aluminium liquid, the liquid level of middle pneumatic flashboard both sides produces drop, under vacuum conditions the company of being formed
Continuous dynamic flowing, during this, vacuum control system is all the time by negative pressure value control in setting range.
Preferably, the height that aluminium liquid is set in the step 4 is 900 mm~1100mm, this is highly more than the height of dividing plate
Degree.
Preferably, negative pressure value in the step 5 in sealing space is 0.2 Mpa~0.5Mpa, under this negative pressure value, both
The vacuum in closing space is ensure that, in turn ensure that the height of aluminium liquid in setting range.
Preferably, the temperature of aluminum liquid scope flowed into the step 2 is 750 DEG C~850 DEG C, higher than the fusing point 660 of aluminium
℃。
Preferably, according to the temperature range of aluminium liquid, the aluminium skimmings amount of solid of main controller controls conveying worm conveying is
The 15%~30% of aluminium liquid, i.e., the relative value for the solid aluminium skimmings solid that can be melted according to raw aluminum liquid temperature per ton, the aluminium liquid of inflow
Temperature is low, then the aluminium skimmings amount of solid conveyed is few, on the contrary then many, and in the present invention, 3~6 tons per hour are can reach under vacuum conditions
Aluminium skimmings melt processed.
Controlled preferably, the flue gas that aluminium skimmings solid melts are produced in the step 4 is collected by vacuum control system, because
To be to remain vacuum-packed state, all flue gases are post-processed by centralized collection, during produced on-site
Fume emission the problem of.
Preferably, agitating device design speed is 300 turns/min~500 turn/min.It can be increased by way of stirring
Plus the melting speed of aluminium skimmings, prevent the top layer that aluminium skimmings are suspended in vacuum aluminum melting liquid from cannot fully melt, the speed of rotating speed according to
The conveying capacity regulation of aluminium skimmings solid.
The advantage of the invention is that：A, under vacuum conditions solid aluminium skimmings melt under anaerobic state, its metal
Burn out rate is no more than 3 ‰；
B, due to the mode of production under air-tight state, all flue gases can suction out hole by one and focus on, and be not present
Flue gas leakage during produced on-site, is truly realized environmentally friendly production；
C, the own temperature fusing aluminium skimmings with raw aluminum liquid, its energy consumption save 50%, reduce cost；
D, high-volume quantity-produced requirement is met, substantially increase production efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 be Fig. 1 in A-A to sectional view；
In figure:1. casing, 1.1. is imported and exported, 2. closures, 3. master controllers, 4. conveying worms, the storage of 5. aluminium skimmings solids
Case, 6. agitating devices, 7. laser liquid-level measurement instrument, 8. B/P EGR Back Pressure Transducer EGRs, 9. vacuum generators, 10. gas control units, 11.
Middle pneumatic flashboard, 12. import and export pneumatic flashboard, 13. chutes, 14. dividing plates, 15. compressed air sources.
Embodiment
Below by embodiment and accompanying drawing, the present invention is further illustrated.
Embodiment is：As depicted in figs. 1 and 2, a kind of aluminium skimmings isothermal melting unit, including casing 1 and its closure 2,
Conveying worm 4, aluminium skimmings solid storage box 5, agitating device 6, vacuum control system and master controller 3, the lower edge of casing 1 are provided with
Two are used for the import and export 1.1 that aluminium liquid flows, and chute 13 is provided with outside the casing 1 for importing and exporting 1.1 place sides, positioned at two turnover
Middle pneumatic flashboard 11 is provided with chute 13 between mouth 1.1, positioned at two one or both sides chutes imported and exported outside 1.1
The pneumatic flashboard 12 of import and export is provided with 13；Wherein, vacuum control system is gentle including vacuum generator 9, compressed air source 15
Casing 1 and its closure 2, conveying worm 4 and the formation sealing space of aluminium skimmings solid storage box 5 in body control unit 10, equipment,
And by vacuum control system in sealing space formation vacuum.
Wherein, laser liquid-level measurement instrument 7 and B/P EGR Back Pressure Transducer EGR 8 are also included in equipment, is respectively used to detect the liquid in casing 1
Negative pressure value in position height and sealing space, and transmit a signal to master controller 3.
In addition, be provided with dividing plate 14 in two casings 1 imported and exported between 1.1, dividing plate 14 is by the institute of 1 internal partition of casing 14
Lower space be separated into two parts.
A kind of aluminium skimmings isothermal fusing production technology produced according to above-mentioned melting unit, production technology includes：
Step 1, aluminium skimmings solid to be melted is loaded after aluminium skimmings solid storage box 5 and aluminium skimmings solid storage box 5 is sealed；
Step 2, pass through master controller 3 and open middle pneumatic flashboard 11, close the pneumatic flashboard of import and export of the wherein side of chute 13
12, temperature range flows into and through two entrance of import and export 1.1 for 750 DEG C~850 DEG C of high temperature aluminium liquid from the opposite side of chute 13
In casing 1；
Step 3, after laser liquid-level measurement instrument 7 detects the liquid level of aluminium liquid higher than 1.1 height formation fluid-tight is imported and exported, pass through
The mode of vacuum jet makes casing 1 --- the vacuum state of the sealing space formation negative pressure in aluminium skimmings solid storage box 5, aluminium liquid
Liquid level is raised；
Step 4, when laser liquid-level measurement instrument 7 detect aluminium liquid liquid level reach setting height --- after 900 mm~1100mm,
The temperature flowed into according to aluminium liquid, master controller 3 starts conveying worm 4 by the aluminium skimmings Solid Conveying and Melting in aluminium skimmings solid storage box 5
Fall into the aluminium liquid in casing 1 and melt, the aluminium skimmings amount of solid of conveying is the 15%~30% of aluminium liquid, while starting agitating device 6；
Step 5, the detection by B/P EGR Back Pressure Transducer EGR 8 and the control of master controller 3, the vacuum generator 9 of vacuum control system, pressure
Contracting air-source 15 and gas control unit 10 control negative pressure value in setting range --- within 0.2 Mpa~0.5Mpa；
Step 6, pass through master controller 3 and close middle pneumatic flashboard 11, open and import and export pneumatic flashboard 12, wherein the one of chute 13
Side is flowed out for aluminium liquid, and opposite side flows into for aluminium liquid, and the liquid level of the both sides of middle pneumatic flashboard 11 produces drop, under vacuum conditions shape
Into continuous dynamic flowing.
, it is necessary to which the height for setting liquid level is more than the height of dividing plate 14 to meet work primary condition in production technology.
In addition, in production process of the present invention, the flue gas that aluminium skimmings solid melts are produced is collected by vacuum control system to be controlled
System.
It should be noted that can arbitrarily select two one imported and exported in 1.1 in present embodiment in actual production
The middle outlet flowed out as aluminium liquid, another is used as entrance.
The specific embodiment of the present invention is the foregoing is only, but the architectural feature of the present invention is not limited thereto, the present invention
It can be used on similar product, any those skilled in the art is in the field of the invention, and the change or modification made are all
Cover among the scope of the claims of the present invention.
Claims (10)
1. a kind of aluminium skimmings isothermal melting unit, it is characterised in that：Including casing（1）And its closure（2）, conveying worm（4）、
Aluminium skimmings solid storage box（5）, agitating device（6）, vacuum control system and master controller（3）, casing（1）Lower edge is provided with two
The import and export flowed for aluminium liquid（1.1）, import and export（1.1）The casing of place side（1）It is provided with chute outside（13）, positioned at two
Import and export（1.1）Between chute（13）Inside it is provided with middle pneumatic flashboard（11）, positioned at two import and export（1.1）Outside one
Side or both sides chute（13）Inside it is provided with the pneumatic flashboard of import and export（12）；
The vacuum control system includes vacuum generator（9）, compressed air source（15）And gas control unit（10）, the case
Body（1）And its closure（2）, conveying worm（4）With aluminium skimmings solid storage box（5）Sealing space is formed, and passes through negative pressure control
System formation vacuum processed.
2. a kind of aluminium skimmings isothermal melting unit according to claim 1, it is characterised in that：Provided with laser liquid-level measurement instrument
（7）For detecting the casing（1）Interior liquid level simultaneously transmits a signal to master controller（3）.
3. a kind of aluminium skimmings isothermal melting unit according to claim 1, it is characterised in that：Provided with B/P EGR Back Pressure Transducer EGR（8）With
In detection sealing space in negative pressure value and transmit a signal to master controller（3）.
4. a kind of aluminium skimmings isothermal melting unit according to claim 1, it is characterised in that：Positioned at two import and export
（1.1）Between casing（1）Inside it is provided with dividing plate（14）, dividing plate（14）By casing（1）Internal partition（14）The space at place separates
Into two parts.
5. a kind of aluminium skimmings isothermal melts production technology, it is characterised in that the production technology includes：
Step 1, aluminium skimmings solid to be melted loaded into aluminium skimmings solid storage box（5）Afterwards and by aluminium skimmings solid storage box（5）Sealing；
Step 2, pass through master controller（3）Open middle pneumatic flashboard（11）, close chute（13）The wherein turnover implication of side
Dynamic flashboard（12）, the aluminium liquid of high temperature is from chute（13）Opposite side flows into and through two import and export（1.1）Into casing（1）It is interior；
Step 3, when laser liquid-level measurement instrument（7）The liquid level of aluminium liquid is detected higher than import and export（1.1）Height after, pass through vacuum
The mode of jet makes casing（1）--- aluminium skimmings solid storage box（5）The vacuum state of interior sealing space formation negative pressure, aluminium liquid
Liquid level is raised；
Step 4, when laser liquid-level measurement instrument（7）The liquid level for detecting aluminium liquid is reached after setting height, master controller（3）Start spiral shell
Revolve conveyer（4）By aluminium skimmings solid storage box（5）In aluminium skimmings Solid Conveying and Melting fall into casing（1）Melted in interior aluminium liquid, simultaneously
Start agitating device（6）；
Step 5, pass through B/P EGR Back Pressure Transducer EGR（8）Detection and master controller（3）Control, the vacuum generator of vacuum control system
（9）, compressed air source（15）And gas control unit（10）By negative pressure value control in setting range；
Step 6, pass through master controller（3）Close middle pneumatic flashboard（11）, open and import and export pneumatic flashboard（12）, chute（13）
Wherein side be aluminium liquid outflow, opposite side be aluminium liquid inflow, middle pneumatic flashboard（11）The liquid level of both sides produces drop, true
Continuous dynamic flowing is formed under Altitude.
6. a kind of aluminium skimmings isothermal fusing production technology according to claim 5, it is characterised in that：Aluminium liquid in the step 4
The height set is 900 mm~1100mm, and this is highly more than dividing plate（14）Height.
7. a kind of aluminium skimmings isothermal fusing production technology according to claim 6, it is characterised in that：Sealed in the step 5
Negative pressure value in space is 0.2 Mpa~0.5Mpa.
8. a kind of aluminium skimmings isothermal fusing production technology according to claim 5, it is characterised in that：Flowed into the step 2
Temperature of aluminum liquid scope be 750 DEG C~850 DEG C.
9. a kind of aluminium skimmings isothermal fusing production technology according to claim 9, it is characterised in that：According to the temperature model of aluminium liquid
Enclose, master controller（3）Control conveying worm（4）The aluminium skimmings amount of solid of conveying is the 15%~30% of aluminium liquid.
10. a kind of aluminium skimmings isothermal fusing production technology according to claim 5, it is characterised in that：Aluminium skimmings in the step 4
The flue gas that solid melts are produced is collected by vacuum control system and controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455788.9A CN107201451A (en) | 2017-06-16 | 2017-06-16 | A kind of aluminium skimmings isothermal melting unit and production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455788.9A CN107201451A (en) | 2017-06-16 | 2017-06-16 | A kind of aluminium skimmings isothermal melting unit and production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107201451A true CN107201451A (en) | 2017-09-26 |
Family
ID=59907481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710455788.9A Pending CN107201451A (en) | 2017-06-16 | 2017-06-16 | A kind of aluminium skimmings isothermal melting unit and production technology |
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| Country | Link |
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| CN (1) | CN107201451A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110918002A (en) * | 2019-12-24 | 2020-03-27 | 湖州织里卓成铝型材股份有限公司 | Raw material melting treatment equipment for aluminum processing production |
| CN110938750A (en) * | 2019-12-28 | 2020-03-31 | 福建麦特新铝业科技有限公司 | Vacuum device for online continuous filtration of aluminum liquid and working method thereof |
| CN111676378A (en) * | 2020-07-15 | 2020-09-18 | 滨州戴森车轮科技有限公司 | Aluminum pretreatment process and equipment for hub manufacturing |
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| CN110918002A (en) * | 2019-12-24 | 2020-03-27 | 湖州织里卓成铝型材股份有限公司 | Raw material melting treatment equipment for aluminum processing production |
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| CN111676378B (en) * | 2020-07-15 | 2022-05-03 | 滨州戴森车轮科技有限公司 | Aluminum pretreatment process and equipment for hub manufacturing |
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Application publication date: 20170926 |
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| RJ01 | Rejection of invention patent application after publication |