CN108085512A - A kind of recycling processing method to waste and old aluminium pot - Google Patents
A kind of recycling processing method to waste and old aluminium pot Download PDFInfo
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- CN108085512A CN108085512A CN201711365052.9A CN201711365052A CN108085512A CN 108085512 A CN108085512 A CN 108085512A CN 201711365052 A CN201711365052 A CN 201711365052A CN 108085512 A CN108085512 A CN 108085512A
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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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- 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 relates to waste aluminum recoveries to utilize technical field, disclose a kind of recycling processing method to waste and old aluminium pot, waste and old aluminium pot is subjected to melting after cleaning cleans, study smelting time, refining temperature, poring rate, flux matches, influence of the technological parameters such as flux addition to Melting Quality, the technological parameter of setting makes the aluminium alloy gassiness impurity content after melting minimum, the difference acted on according to flux cleaning molten, add different flux, the flux used and auxiliary refining agent, the stress generated when not only can eliminate casting, it is capable of the plasticity of reinforcing material simultaneously, optimize materials microstructure and performance, effectively control aluminum melt metallurgical quality, it is final to improve recycling aluminium performance.
Description
Technical field
The invention belongs to waste aluminum recoveries to utilize technical field, and in particular to a kind of recycling to waste and old aluminium pot is handled
Method.
Background technology
The status and effect of aluminium and its alloy in national economy are only second to steel, and dosage and scope are growing.It is former
Aluminium has been unable to meet the needs of society, is on the one hand the increasingly depleted of bauxite, is on the other hand that the smelting of aluminium consumes a large amount of energy
Energy crisis is aggravated in source.So it effectively recycles and is just shown using the various waste materials of aluminium processing industry and using the part scrapped
It must be even more important.Aluminium scrap is a kind of metal for having height recycling and utility value, and aluminium first is a kind of information resources, is smelting aluminium
During to consume the substantial amounts of energy, the mean direct power consumption of China's current electrolysis aluminium is about 14500kWh/t, in the world most
Oneself reaches 13000kWh/t to advanced index, and the energy consumption for melting aluminium scrap is very low, just corresponds to 5% of electrolytic aluminium or so；Aluminium is a kind of
The very strong metal of corrosion stability, corrosion loss amount is few, and casting yield is quite high during aluminium scrap remelting, and recovery value is high, can unlimited number of quilt
It recycles.Based on resource, environment and economic development, there is an urgent need to aluminium scrap regeneration techniques is increasingly paid attention to.
Although China discards aluminium pot, the rate of recovery is very high, most of to be all lowered utilization, basic poor, the skill of many business equipments
Art level is low, causes environmental pollution serious, of high cost, the situation of poor product quality.
The content of the invention
The purpose of the present invention is being directed to the problem of existing, a kind of recycling processing side to waste and old aluminium pot is provided
Method effectively controls aluminum melt metallurgical quality, final to improve recycling aluminium performance.
The present invention is achieved by the following technical solutions：
A kind of recycling processing method to waste and old aluminium pot comprises the following steps：
（1）When using 50-60 DEG C of cleaning solution soaking and washing 2-3 small waste and old aluminium pot, then clear water cleans 2-3 times, in aluminium pot paint
Layer surface smears last layer except white spirit, is wrapped up using preservative film, which is made in parts by weight of following component：Pinolenic acid
4.5-5.5 parts of potassium, 5.5-6.0 parts of sorbitan trioleate, 7.5-8.5 parts of polyoxyethylene methyl alkylolamides, di-methylcarbinol amine
8.5-9.0 parts, 9.5-10.0 parts of pectic acid sodium, 11-12 parts of colophony powder, 30-35 parts of cornstarch, 70-80 parts of ethyl alcohol, be put into height
Paint removal is carried out in warm pressure cooker, heating temperature is 180-200 DEG C, pressure 0.7-0.8MPa；
（2）Aluminium pot after paint removal is dried in 240-260 DEG C of baking oven to constant weight, is then pressed into thickness using forcing press as 3-
5 centimetres of compression aluminium cake carries out melting, and flux dispensing is dried at 120-130 DEG C to constant weight, is put into ball grinder, is put into just
Ball, ball milling 4-5 obtains powder kept dry when small spare, smelting furnace is preheated before melting, scarfing cinder, and by crucible furnace, pony ladle,
Skimming ladle, bell jar, the mold of pouring aluminium ingot preheat after being cleared up, and heat-resisting paint is painted after being preheating to 210-230 DEG C, is then dried
It is dry；
（3）The compression aluminium cake for adding in 15-18% is first added in during melting, until completely melted, remainder is added, treats molten aluminum temperature
After degree reaches 700-710 DEG C, flux is added in, dosage is the 0.33-0.35% of molten aluminum quality, and is constantly stirred, and works as clinker
Granularity from large to small, can take clinker off when reaching fine-powdered, after skimming, control temperature of aluminum liquid adds in auxiliary at 725-730 DEG C
Refining agent is helped, additive amount is the 0.15-0.18% of molten aluminum quality, when effervescent and Slag inclusion do not float, rapidly removes folder
Slag after removing slag inclusion, is poured into a mould immediately.
It is further described as to said program, step（1）0.15- containing mass fraction in the cleaning solution
0.20% detergent, the detergent are made according to mass percent meter of following component：Lauryl sodium sulfate account for 4.5-5.5%,
Neopelex accounts for 3.0-3.5%, sodium hydroxide accounts for 1.0-1.5%, sodium tripolyphosphate accounts for 0.5-0.8%, sodium triphosphate
Account for 0.4-0.5%, sodium citrate accounts for 0.3-0.4%, alkylphenol polyoxyethylene ether accounts for 0.4-0.6%, water accounts for 20-30%, remaining as third
Ketone.
It is further described as to said program, step（2）The flux formula is：By ice crystal, potassium chloride, chlorination
Sodium, according to 2.0-2.3:1.4-1.5:1.7-1.8 mass ratio composition.
It is further described as to said program, step（3）It is described casting post growth annealing be：Annealing temperature 540-
550 DEG C, annealing time for 12-15 it is small when, 6-8 DEG C/min of the rate of heat addition, in room temperature water of then quenching.
It is further described as to said program, step（3）The auxiliary refining agent is by sodium chloride, potassium chloride, fluorination
Sodium is according to 1.4-1.5:1.8-2.0:The mass ratio composition of 0.2-0.3.
The present invention has the following advantages compared with prior art：In order to solve asking for existing waste and old aluminium pot recycling processing quality difference
Topic, it is the present invention provides a kind of recycling processing method to waste and old aluminium pot, waste and old aluminium pot is laggard by cleaning removal of impurities
Row melting, the technological parameters such as research smelting time, refining temperature, poring rate, flux proportioning, flux addition are to Melting Quality
Influence, the technological parameter of setting makes the aluminium alloy gassiness impurity content after melting minimum, cleaning molten acted on according to flux
Difference adds different flux, the flux used and auxiliary refining agent, the stress generated when not only can eliminate casting, simultaneously
It is capable of the plasticity of reinforcing material, optimizes materials microstructure and performance, effectively control aluminum melt metallurgical quality, tensile strength improves
23-25%, elongation improve 12-14%, final to improve recycling aluminium performance.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
A kind of recycling processing method to waste and old aluminium pot comprises the following steps：
（1）When using 50 DEG C of cleaning solution soaking and washings 2 small waste and old aluminium pot, then clear water cleans 2 times, is smeared on aluminium pot enamelled coating surface
Last layer removes white spirit, is wrapped up using preservative film, which is made in parts by weight of following component：4.5 parts of pinolenic acid potassium,
5.5 parts of sorbitan trioleate, 7.5 parts of polyoxyethylene methyl alkylolamides, 8.5 parts of di-methylcarbinol amine, 9.5 parts of pectic acid sodium,
11 parts of colophony powder, 30 parts of cornstarch, 70 parts of ethyl alcohol, are put into high temperature and pressure pot and carry out paint removal, and heating temperature is 180 DEG C, pressure
Power is 0.7MPa；
（2）Aluminium pot after paint removal is dried in 240 DEG C of baking ovens to constant weight, is then pressed into thickness using forcing press as 3 centimetres
Compression aluminium cake carry out melting, by flux dispensing at 120 DEG C dry to constant weight, be put into ball grinder, be put into firm ball, ball milling 4
It is spare that hour obtains powder kept dry, smelting furnace is preheated before melting, scarfing cinder, and by crucible furnace, pony ladle, skimming ladle, clock
Cover, the mold of pouring aluminium ingot preheat after being cleared up, and heat-resisting paint is painted after being preheating to 210 DEG C, is then dried；
（3）The compression aluminium cake of addition 15% is first added in during melting, until completely melted, remainder is added, treats that temperature of aluminum liquid reaches
To after 700 DEG C, add in flux, dosage is the 0.33% of molten aluminum quality, and is constantly stirred, when slag granularity from large to small,
Clinker can be taken when reaching fine-powdered off, after skimming, control temperature of aluminum liquid adds in auxiliary refining agent at 725 DEG C, and additive amount is
The 0.15% of molten aluminum quality when effervescent and Slag inclusion do not float, rapidly removes slag inclusion, after removing slag inclusion, is poured immediately
Note.
It is further described as to said program, step（1）0.15% cleaning containing mass fraction in the cleaning solution
Agent, the detergent are made according to mass percent meter of following component：Lauryl sodium sulfate accounts for 4.5%, dodecyl benzene sulfonic acid
Sodium, which accounts for 3.0%, sodium hydroxide and accounts for 1.0%, sodium tripolyphosphate and account for 0.5%, sodium triphosphate and account for 0.4%, sodium citrate, accounts for 0.3%, alkyl
Phenol polyethenoxy ether accounts for 0.4%, water and accounts for 20%, remaining as acetone.
It is further described as to said program, step（2）The flux formula is：By ice crystal, potassium chloride, chlorination
Sodium, according to 2.0:1.4:1.7 mass ratio composition.
It is further described as to said program, step（3）It is described casting post growth annealing be：540 DEG C of annealing temperature,
Annealing time for 12 it is small when, 6 DEG C/min of the rate of heat addition, in room temperature water of then quenching.
It is further described as to said program, step（3）The auxiliary refining agent is by sodium chloride, potassium chloride, fluorination
Sodium is according to 1.4:1.8:0.2 mass ratio composition.
Embodiment 2
A kind of recycling processing method to waste and old aluminium pot comprises the following steps：
（1）When using 55 DEG C of cleaning solution soaking and washings 2.5 small waste and old aluminium pot, then clear water cleans 2 times, on aluminium pot enamelled coating surface
Last layer is smeared except white spirit, is wrapped up using preservative film, which is made in parts by weight of following component：Pinolenic acid potassium 5.0
Part, 5.8 parts of sorbitan trioleate, 8.0 parts of polyoxyethylene methyl alkylolamides, 8.8 parts of di-methylcarbinol amine, pectic acid sodium 9.8
Part, 11.5 parts of colophony powder, 33 parts of cornstarch, 75 parts of ethyl alcohol, are put into high temperature and pressure pot and carry out paint removal, heating temperature 190
DEG C, pressure 0.75MPa；
（2）Aluminium pot after paint removal is dried in 250 DEG C of baking ovens to constant weight, is then pressed into thickness using forcing press as 4 centimetres
Compression aluminium cake carry out melting, by flux dispensing at 125 DEG C dry to constant weight, be put into ball grinder, be put into firm ball, ball milling
4.5 to obtain powder kept dry when small spare, smelting furnace is preheated before melting, scarfing cinder, and by crucible furnace, pony ladle, skimming ladle,
Bell jar, the mold of pouring aluminium ingot preheat after being cleared up, and heat-resisting paint is painted after being preheating to 220 DEG C, is then dried；
（3）The compression aluminium cake of addition 16% is first added in during melting, until completely melted, remainder is added, treats that temperature of aluminum liquid reaches
To after 705 DEG C, add in flux, dosage is the 0.34% of molten aluminum quality, and is constantly stirred, when slag granularity from large to small,
Clinker can be taken when reaching fine-powdered off, after skimming, control temperature of aluminum liquid adds in auxiliary refining agent at 728 DEG C, and additive amount is
The 0.17% of molten aluminum quality when effervescent and Slag inclusion do not float, rapidly removes slag inclusion, after removing slag inclusion, is poured immediately
Note.
It is further described as to said program, step（1）0.18% cleaning containing mass fraction in the cleaning solution
Agent, the detergent are made according to mass percent meter of following component：Lauryl sodium sulfate accounts for 5.0%, dodecyl benzene sulfonic acid
Sodium, which accounts for 3.3%, sodium hydroxide and accounts for 1.3%, sodium tripolyphosphate and account for 0.6%, sodium triphosphate and account for 0.45%, sodium citrate, accounts for 0.35%, alkane
Base phenol polyethenoxy ether accounts for 0.5%, water and accounts for 25%, remaining as acetone.
It is further described as to said program, step（2）The flux formula is：By ice crystal, potassium chloride, chlorination
Sodium, according to 2.1:1.45:1.75 mass ratio composition.
It is further described as to said program, step（3）It is described casting post growth annealing be：545 DEG C of annealing temperature,
Annealing time for 13 it is small when, 7 DEG C/min of the rate of heat addition, in room temperature water of then quenching.
It is further described as to said program, step（3）The auxiliary refining agent is by sodium chloride, potassium chloride, fluorination
Sodium is according to 1.45:1.9:0.25 mass ratio composition.
Embodiment 3
A kind of recycling processing method to waste and old aluminium pot comprises the following steps：
（1）When using 60 DEG C of cleaning solution soaking and washings 3 small waste and old aluminium pot, then clear water cleans 3 times, is smeared on aluminium pot enamelled coating surface
Last layer removes white spirit, is wrapped up using preservative film, which is made in parts by weight of following component：5.5 parts of pinolenic acid potassium,
6.0 parts of sorbitan trioleate, 8.5 parts of polyoxyethylene methyl alkylolamides, 9.0 parts of di-methylcarbinol amine, 10.0 parts of pectic acid sodium,
12 parts of colophony powder, 35 parts of cornstarch, 80 parts of ethyl alcohol, are put into high temperature and pressure pot and carry out paint removal, and heating temperature is 200 DEG C, pressure
Power is 0.8MPa；
（2）Aluminium pot after paint removal is dried in 260 DEG C of baking ovens to constant weight, is then pressed into thickness using forcing press as 5 centimetres
Compression aluminium cake carry out melting, by flux dispensing at 130 DEG C dry to constant weight, be put into ball grinder, be put into firm ball, ball milling 5
It is spare that hour obtains powder kept dry, smelting furnace is preheated before melting, scarfing cinder, and by crucible furnace, pony ladle, skimming ladle, clock
Cover, the mold of pouring aluminium ingot preheat after being cleared up, and heat-resisting paint is painted after being preheating to 230 DEG C, is then dried；
（3）The compression aluminium cake of addition 18% is first added in during melting, until completely melted, remainder is added, treats that temperature of aluminum liquid reaches
To after 710 DEG C, add in flux, dosage is the 0.35% of molten aluminum quality, and is constantly stirred, when slag granularity from large to small,
Clinker can be taken when reaching fine-powdered off, after skimming, control temperature of aluminum liquid adds in auxiliary refining agent at 730 DEG C, and additive amount is
The 0.18% of molten aluminum quality when effervescent and Slag inclusion do not float, rapidly removes slag inclusion, after removing slag inclusion, is poured immediately
Note.
It is further described as to said program, step（1）0.20% cleaning containing mass fraction in the cleaning solution
Agent, the detergent are made according to mass percent meter of following component：Lauryl sodium sulfate accounts for 5.5%, dodecyl benzene sulfonic acid
Sodium, which accounts for 3.5%, sodium hydroxide and accounts for 1.5%, sodium tripolyphosphate and account for 0.8%, sodium triphosphate and account for 0.5%, sodium citrate, accounts for 0.4%, alkyl
Phenol polyethenoxy ether accounts for 0.6%, water and accounts for 30%, remaining as acetone.
It is further described as to said program, step（2）The flux formula is：By ice crystal, potassium chloride, chlorination
Sodium, according to 2.3:1.5:1.8 mass ratio composition.
It is further described as to said program, step（3）It is described casting post growth annealing be：550 DEG C of annealing temperature,
Annealing time for 15 it is small when, 8 DEG C/min of the rate of heat addition, in room temperature water of then quenching.
It is further described as to said program, step（3）The auxiliary refining agent is by sodium chloride, potassium chloride, fluorination
Sodium is according to 1.5:2.0:0.3 mass ratio composition.
Claims (5)
1. a kind of recycling processing method to waste and old aluminium pot, which is characterized in that comprise the following steps：
（1）When using 50-60 DEG C of cleaning solution soaking and washing 2-3 small waste and old aluminium pot, then clear water cleans 2-3 times, in aluminium pot paint
Layer surface smears last layer except white spirit, is wrapped up using preservative film, which is made in parts by weight of following component：Pinolenic acid
4.5-5.5 parts of potassium, 5.5-6.0 parts of sorbitan trioleate, 7.5-8.5 parts of polyoxyethylene methyl alkylolamides, di-methylcarbinol amine
8.5-9.0 parts, 9.5-10.0 parts of pectic acid sodium, 11-12 parts of colophony powder, 30-35 parts of cornstarch, 70-80 parts of ethyl alcohol, be put into height
Paint removal is carried out in warm pressure cooker, heating temperature is 180-200 DEG C, pressure 0.7-0.8MPa；
（2）Aluminium pot after paint removal is dried in 240-260 DEG C of baking oven to constant weight, is then pressed into thickness using forcing press as 3-
5 centimetres of compression aluminium cake carries out melting, and flux dispensing is dried at 120-130 DEG C to constant weight, is put into ball grinder, is put into just
Ball, ball milling 4-5 obtains powder kept dry when small spare, smelting furnace is preheated before melting, scarfing cinder, and by crucible furnace, pony ladle,
Skimming ladle, bell jar, the mold of pouring aluminium ingot preheat after being cleared up, and heat-resisting paint is painted after being preheating to 210-230 DEG C, is then dried
It is dry；
（3）The compression aluminium cake for adding in 15-18% is first added in during melting, until completely melted, remainder is added, treats molten aluminum temperature
After degree reaches 700-710 DEG C, flux is added in, dosage is the 0.33-0.35% of molten aluminum quality, and is constantly stirred, and works as clinker
Granularity from large to small, can take clinker off when reaching fine-powdered, after skimming, control temperature of aluminum liquid adds in auxiliary at 725-730 DEG C
Refining agent is helped, additive amount is the 0.15-0.18% of molten aluminum quality, when effervescent and Slag inclusion do not float, rapidly removes folder
Slag after removing slag inclusion, is poured into a mould immediately.
A kind of 2. recycling processing method to waste and old aluminium pot as described in claim 1, which is characterized in that step（1）Institute
The 0.15-0.20% detergents containing mass fraction in cleaning solution are stated, the detergent is according to mass percent meter by following component system
Into：Lauryl sodium sulfate accounts for 4.5-5.5%, neopelex accounts for 3.0-3.5%, sodium hydroxide accounts for 1.0-1.5%, three
Polyphosphate sodium accounts for 0.5-0.8%, sodium triphosphate accounts for 0.4-0.5%, sodium citrate accounts for 0.3-0.4%, alkylphenol polyoxyethylene ether accounts for
0.4-0.6%, water account for 20-30%, remaining as acetone.
A kind of 3. recycling processing method to waste and old aluminium pot as described in claim 1, which is characterized in that step（2）Institute
Stating flux formula is：By ice crystal, potassium chloride, sodium chloride, according to 2.0-2.3:1.4-1.5:1.7-1.8 mass ratio composition.
A kind of 4. recycling processing method to waste and old aluminium pot as described in claim 1, which is characterized in that step（3）Institute
Stating casting post growth annealing is：540-550 DEG C of annealing temperature, when annealing time is 12-15 small, 6-8 DEG C/min of the rate of heat addition,
Then quench in room temperature water.
A kind of 5. recycling processing method to waste and old aluminium pot as described in claim 1, which is characterized in that step（3）Institute
Auxiliary refining agent is stated by sodium chloride, potassium chloride, sodium fluoride according to 1.4-1.5:1.8-2.0:The mass ratio composition of 0.2-0.3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983069A (en) * | 2019-11-25 | 2020-04-10 | 赫晓苓 | Aluminum alloy die-casting waste recycling device |
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| CN110983069A (en) * | 2019-11-25 | 2020-04-10 | 赫晓苓 | Aluminum alloy die-casting waste recycling device |
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Application publication date: 20180529 |