CN103255293B - Recycling method of aluminum slags generated during aluminum alloy melting process, recycled molten aluminum and application thereof - Google Patents
Recycling method of aluminum slags generated during aluminum alloy melting process, recycled molten aluminum and application thereof Download PDFInfo
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- CN103255293B CN103255293B CN201310154682.7A CN201310154682A CN103255293B CN 103255293 B CN103255293 B CN 103255293B CN 201310154682 A CN201310154682 A CN 201310154682A CN 103255293 B CN103255293 B CN 103255293B
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a recycling method of aluminum slags generated during an aluminum alloy melting process. The method comprises the following steps of: pretreatment; refining; modification and refinement; ingredient proportioning; degassing; and slag removing and ash eliminating. According to the method, by performing the pretreatment, the refining, the modification and refinement the ingredient proportioning, the degassing, the slag removing and the ash eliminating and the like on the aluminum slags, the deterioration and refinement functions are performed effectively, so that the purity degree of the recycled molten aluminum slag melt is improved; and by performing the ingredient proportioning, the obvious refinement effect is obtained, i.e., the air absorption by the alloy is reduced, so that the liquidity of the aluminum alloy melt is improved. Therefore, the quality of a down-stream product is improved. The invention further relates to a recycled molten aluminum and an application thereof.
Description
Technical field
The invention belongs to novel material-field of metallurgy, be specifically related to the aluminium slag recovery method produced in a kind of aluminum alloy melting process, the application of the aluminium liquid that application the method reclaims and this recovery aluminium liquid.
Background technology
Along with the fast development of aluminium alloy deep processing enterprise, aluminium alloy processing enterprise creates a large amount of aluminum dross in aluminium alloy smelting process, and these aluminum dross are used as industrial refuse process by enterprise usually, not only pollutes environment but also cause great waste to resource.Even if there is Some Enterprises to reclaim aluminum dross, also because its technique is immature, the rate of recovery is low and cause the series of problems such as secondary pollution.
Summary of the invention
The present invention is intended to solve the problems of the technologies described above at least to a certain extent.
First goal of the invention of the present invention is to provide the aluminium slag smelting technique produced in a kind of quick recovery aluminum alloy melting process, it not only can effectively play deslagging and outgassing, improve the purity reclaiming aluminum dross liquation, and carry out rotten after proportioning components, thinning effect is remarkable, alloy air-breathing can be reduced, so that the mobility of molten aluminium alloy can be improved, improve the quality of derived product.
Second goal of the invention of the present invention is to provide a kind of recovery aluminium liquid utilizing aforesaid method to reclaim aluminium slag.
3rd goal of the invention of the present invention is the application providing a kind of above-mentioned recovery aluminium liquid.
For realizing the first goal of the invention of the present invention, the present invention adopts following technical scheme, and the aluminium slag recovery method produced in a kind of aluminum alloy melting process, comprises the following steps:
S1. pre-treatment: the aluminium slag produced in aluminum alloy melting process is carried out impurity elimination, ball milling successively, beats sieve, screening, magneticseparation process;
S2. refining: by pretreated aluminium slag fusing, when temperature arrives 720-750 DEG C, add refining agent in aluminium liquid, carry out refining by 99.9% nitrogen;
S3. rotten and refinement: add al-sr alloy in the aluminium liquid after refining, rotten and thinning processing are carried out to aluminium liquid;
S4. proportioning components: analysis of components is carried out to the aluminium liquid sampling after rotten and refinement, temperature of aluminum liquid at 730-750 DEG C time add A00 aluminium ingot, 75 titanium additives, magnesium ingot, until aluminium liquid composition meets the requirements;
S5. degasification: be blown into nitrogen by porous plug in aluminium liquid and carry out degasification;
S6. slagging-off is scratched in the ashes: in aluminium liquid, add slagging agent carry out slag hitting, and the slag got is pulled out, and the insulation of aluminium liquid is static rear stand-by.
Aluminium slag a series of process such as to be scratched in the ashes through pre-treatment, refining, rotten and refinement, proportioning components, degasification, slagging-off by the present invention, effectively play deslagging and outgassing, improve the purity reclaiming aluminum dross liquation, and carry out rotten after proportioning components, thinning effect is remarkable, alloy air-breathing can be reduced, so that the mobility of molten aluminium alloy can be improved, improve the quality of derived product.
Preferred version of the present invention, after completing composition proportion in step s 4 which, the content of each component is by weight: Mg content is 0.25-0.45%; Titanium content is 0.10-0.20%; Silicone content is 6.5-7.5%; The content of strontium is the 0.005-0.015% of aluminium liquid weight.
Preferred version of the present invention, described porous plug is rotating porous plug in step s 5.
The present invention improves further and is, during degasification, refining temperature is 700-720 DEG C in step s 5, and nitrogen flow is 0.8-1.12 cubic meter/hour, and rotating porous plug rotating speed controls at 450 ± 50 revs/min, and nitrogen bubble controls at diameter 1-3mm.
For realizing the second goal of the invention of the present invention, the invention provides a kind of aluminium liquid applied aforesaid method and reclaim.
For realizing the 3rd goal of the invention of the present invention, described aluminium liquid is best to be used in 30-45 minute after recovery completes.
The invention has the beneficial effects as follows, effectively can remove the impurity in aluminum dross and obnoxious flavour, improve the purity that aluminium alloy reclaims liquation, and after modifying-refining and degasification, improve the mechanical property of molten aluminium alloy cast article.
Embodiment
The following detailed description of working process of the present invention and principle of work.
The refining agent adopted in the present invention, A00 aluminium ingot, 75 titanium additives, magnesium ingot are conventional sale product on market.Concrete employing be refining agent, 75 titanium additives that the permanent good melt material products factory in Shandong Wendeng City is produced.The A00 aluminium ingot that Guizhou Aluminum Factory is produced and the magnesium ingot that Wenxi, southwestern Shansi silver light magnesium industry is produced.
Embodiment 1
Process according to the following steps:
S1. pre-treatment: the aluminium slag 10 kilograms produced in aluminum alloy melting process is carried out impurity elimination, ball milling successively, beats sieve, screening, magneticseparation process;
S2. refining: pretreated aluminium slag is dropped into crucible melting, when in-furnace temperature reaches 720 °, adds refining agent 1 kilogram in aluminium liquid, pass into 99.9% nitrogen and carry out refining;
S3. rotten and refinement: add 1.1 kilograms, 10% al-sr alloy ingot in the aluminium liquid after refining, rotten and thinning processing are carried out to aluminium liquid;
S4. proportioning components: carry out analysis of components to the aluminium liquid sampling after rotten and refinement, aluminium content is 91.3%; Mg content is 0.005%; Titanium content is 0.18%; Silicone content is 8.0%; A00 aluminium ingot 90 kilograms, magnesium ingot 2.7 kilograms is added in aluminium liquid; Detect again: aluminium content is 92.05%; Mg content is 0.26%; Titanium content is 0.10%; Content of strontium is 0.005%; Silicone content is 7.2%.
S5. degasification: be blown into nitrogen by rotating porous plug (Guangdong Wanfeng Motorcycle Wheel Co., Ltd.'s production) in aluminium liquid and carry out degasification; During degasification, refining temperature is 700 DEG C, and nitrogen flow is 0.8 cubic meter/hour, and rotating porous plug rotating speed controls at 420 revs/min, and nitrogen bubble controls at diameter 1-3mm.
S6. slagging-off is scratched in the ashes: in aluminium liquid, add slagging agent 1 kilogram carry out slag hitting, and the slag got is pulled out.
Utilize above-mentioned aluminium liquid casting hub of motorcycle, after testing, the mechanical performance index of wheel hub is tensile strength 279.3Mpa, and unit elongation 7.6%, meets hub of motorcycle manufacture requirements.
Embodiment 2
Process according to the following steps:
S1. pre-treatment: the aluminium slag 10 kilograms produced in aluminum alloy melting process is carried out impurity elimination, ball milling successively, beats sieve, screening, magneticseparation process;
S2. refining: pretreated aluminium slag is dropped into crucible melting, is add refining agent 1 kilogram in 730 degree of aluminium liquid at in-furnace temperature, passes into 99.9% nitrogen and carry out refining;
S3. rotten and refinement: add 1.3 kilograms, 10% al-sr alloy ingot in the aluminium liquid after refining, rotten and thinning processing are carried out to aluminium liquid;
S4. proportioning components: carry out analysis of components to the aluminium liquid sampling after rotten and refinement, aluminium content is 91.1%; Mg content is 0.004%; Titanium content is 0.19%; Silicone content is 8.1%; A00 aluminium ingot 90 kilograms, 75 titanium additives 0.02 kilogram is added in aluminium liquid; Magnesium ingot 3 kilograms; Detect again: aluminium content is 92.05%; Mg content is 0.32%; Titanium content is 0.17%; Content of strontium is 0.011%; Silicone content is 7.0%.
S5. degasification: be blown into nitrogen by rotating porous plug (Guangdong Wanfeng Motorcycle Wheel Co., Ltd.'s production) in aluminium liquid and carry out degasification; During degasification, refining temperature is 710 DEG C, and nitrogen flow is 1 cubic meter/hour, and rotating porous plug rotating speed controls at 450 revs/min, and nitrogen bubble controls at diameter 1-3mm.
S6. slagging-off is scratched in the ashes: in aluminium liquid, add slagging agent 1 kilogram carry out slag hitting, and the slag got is pulled out.
Utilize above-mentioned aluminium liquid casting hub of motorcycle, after testing, the mechanical performance index of wheel hub is tensile strength 279.3Mpa, and unit elongation 7.6%, meets hub of motorcycle manufacture requirements.
Embodiment 3
Process according to the following steps:
S1. pre-treatment: the aluminium slag 10 kilograms produced in aluminum alloy melting process is carried out impurity elimination, ball milling successively, beats sieve, screening, magneticseparation process;
S2. refining: pretreated aluminium slag is dropped into crucible melting, is add refining agent 1 kilogram in 750 aluminium liquid at in-furnace temperature, passes into 99.9% nitrogen and carry out refining;
S3. rotten and refinement: add 1.33 kilograms, 10% al-sr alloy ingot in the aluminium liquid after refining, rotten and thinning processing are carried out to aluminium liquid;
S4. proportioning components: carry out analysis of components to the aluminium liquid sampling after rotten and refinement, aluminium content is 91.5%; Mg content is 0.003%; Titanium content is 0.16%; Silicone content is 7.9%; A00 aluminium ingot 90 kilograms, 75 titanium additives 0.05 kilogram is added in aluminium liquid; Magnesium ingot 3.2 kilograms; Detect again: aluminium content is 92.05%; Mg content is 0.41%; Titanium content is 0.19%; Content of strontium is 0.015%; Silicone content is 6.6%.
S5. degasification: be blown into nitrogen by rotating porous plug (Guangdong Wanfeng Motorcycle Wheel Co., Ltd.'s production) in aluminium liquid and carry out degasification; During degasification, refining temperature is 720 DEG C, and nitrogen flow is 1.1 cubic meters/hour, and rotating porous plug rotating speed controls at 500 revs/min, and nitrogen bubble controls at diameter 1-3mm.
S6. slagging-off is scratched in the ashes: in aluminium liquid, add slagging agent 1 kilogram carry out slag hitting, and the slag got is pulled out.
Utilize above-mentioned aluminium liquid casting hub of motorcycle, after testing, the mechanical performance index of wheel hub is tensile strength 279.3Mpa, and unit elongation 7.6%, meets hub of motorcycle manufacture requirements.
Claims (3)
1. a recovery method for the aluminium slag produced in aluminum alloy melting process, is characterized in that, comprise the following steps:
S1. pre-treatment: the aluminium slag produced in aluminum alloy melting process is carried out impurity elimination, ball milling successively, beats sieve, screening, magneticseparation process;
S2. refining: by pretreated aluminium slag fusing, when temperature arrives 720-750 DEG C, add refining agent in aluminium liquid, pass into nitrogen and carry out refining;
S3. rotten and refinement: add al-sr alloy in the aluminium liquid after refining, rotten and thinning processing are carried out to aluminium liquid;
S4. proportioning components: analysis of components is carried out to the aluminium liquid sampling after rotten and refinement, temperature of aluminum liquid at 730-750 DEG C time add A00 aluminium ingot, 75 titanium additives, magnesium ingot;
S5. degasification: be blown into nitrogen by porous plug in aluminium liquid and carry out degasification;
S6. slagging-off is scratched in the ashes: in aluminium liquid, add slagging agent carry out slag hitting, and the slag got is pulled out, and the insulation of aluminium liquid is static rear stand-by;
After completing composition proportion in step s 4 which, the content of each component is by weight: Mg content is 0.25-0.45%; Titanium content is 0.10-0.20%; Silicone content is 6.5-7.5%; The content of strontium is the 0.005-0.015% of aluminium liquid weight;
In step s 5, described porous plug is rotating porous plug, and during degasification, the temperature of aluminium liquid is 700-720 DEG C, and nitrogen flow is 0.8-1.12 cubic meter/hour, and rotating porous plug rotating speed controls at 450 ± 50 revs/min, and nitrogen bubble diameter is 1-3mm.
2. the recovery method of the aluminium slag produced in aluminum alloy melting process according to claim 1, is characterized in that, the concentration of described nitrogen is 99.9% in step s 2.
3. the application of the aluminium liquid prepared by the recovery method of the aluminium slag produced in aluminum alloy melting process described in claim 1 or 2, is characterized in that, described aluminium liquid uses in 45 minutes after recovery completes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310154682.7A CN103255293B (en) | 2013-04-28 | 2013-04-28 | Recycling method of aluminum slags generated during aluminum alloy melting process, recycled molten aluminum and application thereof |
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| CN201310154682.7A CN103255293B (en) | 2013-04-28 | 2013-04-28 | Recycling method of aluminum slags generated during aluminum alloy melting process, recycled molten aluminum and application thereof |
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| CN103255293B true CN103255293B (en) | 2015-06-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103484684B (en) * | 2013-10-16 | 2015-03-25 | 普曦峻 | No-pollution treatment method of electrolytic aluminum smelting aluminum slag |
| CN108624789A (en) * | 2017-03-17 | 2018-10-09 | 天津金鹏铝材制造有限公司 | A kind of production technology of aluminium alloy ingots |
| CN109457133A (en) * | 2018-11-22 | 2019-03-12 | 昆山市超群金属制品有限公司 | A kind of and grain refining efficiency high-efficiency refining agent and its manufacturing method |
| CN111074079A (en) * | 2020-02-26 | 2020-04-28 | 佛山市和阳精密金属制品有限公司 | Preparation method of aluminum melt |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653825A (en) * | 2011-03-01 | 2012-09-05 | 赵凯志 | Aluminum alloy wheel hub cutting scrap recycling and smelting process |
| CN102703739A (en) * | 2012-07-03 | 2012-10-03 | 遂宁市新华西铝业有限公司 | Production process of recycled aluminum |
| CN102912140A (en) * | 2012-07-26 | 2013-02-06 | 北京科技大学 | Method for recycling waste aluminum ring-pull cans in green circular relegation way |
| CN102925763A (en) * | 2011-08-11 | 2013-02-13 | 赵凯志 | Aluminum alloy automobile wheel hub composite reinforcement technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653825A (en) * | 2011-03-01 | 2012-09-05 | 赵凯志 | Aluminum alloy wheel hub cutting scrap recycling and smelting process |
| CN102925763A (en) * | 2011-08-11 | 2013-02-13 | 赵凯志 | Aluminum alloy automobile wheel hub composite reinforcement technology |
| CN102703739A (en) * | 2012-07-03 | 2012-10-03 | 遂宁市新华西铝业有限公司 | Production process of recycled aluminum |
| CN102912140A (en) * | 2012-07-26 | 2013-02-06 | 北京科技大学 | Method for recycling waste aluminum ring-pull cans in green circular relegation way |
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