CN1760388A - Method for regenerating 3004 aluminum alloy by melting and purifying worn-out aluminum tear-off tin - Google Patents
Method for regenerating 3004 aluminum alloy by melting and purifying worn-out aluminum tear-off tin Download PDFInfo
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- CN1760388A CN1760388A CN 200510037451 CN200510037451A CN1760388A CN 1760388 A CN1760388 A CN 1760388A CN 200510037451 CN200510037451 CN 200510037451 CN 200510037451 A CN200510037451 A CN 200510037451A CN 1760388 A CN1760388 A CN 1760388A
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Abstract
A process for regenerating the Al-alloy 3004 from used top pop can made of Al includes such steps as designing a crucible furnace with stirrer, squeezer and insulating cover, loading the flux coated carrier particles and raw material in the crucible layer by layer in a particular mode, controlling the temp to be lower than the softening temp of Al-alloy, discharging the volatile substance via the tube on insulating cover and burning it, controlling the temp to be the softening temp squeezing the covering layer and raw material layer to form molten Al-alloy layer and covering layer, controlling the temp to be the melting temp changing the flux film on carrier to a filter layer, stirring, cleaning the molten Al-alloy by said filter layer, and discharging product.
Description
Technical field: what the present invention relates to is the method that a kind of purifying aluminium alloy melt is handled, and belongs to casting field.
Background technology: waste and old aluminum easy open can contains multiple high precision fine aluminum alloy.The purpose of waste aluminium alloy smelting purification is the recovery of aluminium alloy resource and regeneration.Be divided into direct heating and indirect heating dual mode by type of heating.Direet-heating type is owing to the scaling loss of aluminium alloy and purify and take away the serious waste that aluminum metal partly causes the aluminium alloy resource in the slagging process.Scaling loss is the immediate cause that non-metallic inclusion produces, also be the immediate cause that source of pollution aluminium slag produces, scaling loss is mass consumption aluminum metal resource not only, and brings very big difficulty to aluminium melt purifying, cause waste aluminium alloy reconstituted product debase, do not reach the purpose of regeneration.Traditional indirect heating mode, scaling loss reduces relatively, but the problems referred to above still exist, and can not get development because of its limitation.At present domestic and international waste aluminium alloy regenerated melting method is used history decades till today, and burning problems aluminium base and alloying element restricts the development of regeneration Aluminum all the time in the raw material.The applicant has applied for patent on March 7th, 2005, and application number is: 20051003338X, name is called: the method for waste aluminium alloy smelting purification regeneration.This technology is the method that a kind of indirect heating mode melting and purifying worn-out aluminium alloy is made profits again, by being covered with flux layer, the carrier granule of density＜molten aluminium is formed, push the tectum that forms with the aluminium alloy liquid layer in the tectal process at waste aluminium alloy raw material softening temperature, can control the scaling loss of the waste aluminium alloy aluminium base and alloying element in the melting and purifying process that meets alloy composition standard effectively.Reached a scaling loss amount, under the condition of no longer adding primary aluminium (fine aluminium), added alloying element magnesium (Mg) and just can make the whole alloying elements of former grade aluminium alloy all meet the degree of alloy ingredient standard by alloying element magnesium (Mg).A complete waste and old aluminum easy open can is by the can body (trade mark 3004, account for complete jar of weight 11.5/15), cover (the trade mark 5182, account for complete jar of weight 3/15), three kinds of high precision fine aluminum alloys of draw ring (trade mark 5048 accounts for complete jar of weight 0.5/15) constitute, in real secondary aluminum industrial production, be difficult to accomplish these three kinds of aluminium alloys are separated, the former grade aluminium alloy of regenerating respectively must carry out mixing.Tradition melting secondary aluminium alloy method, scaling loss is serious, the mixing assorted aluminium that obtains of the multiple alloy of the former trade mark, the Chemical Composition complexity is difficult to adjust, and also can produce a large amount of aluminium slags, waste a large amount of valuable aluminium alloy resources, lose more than gain, reduce the value of waste and old aluminum easy open can regeneration greatly.Still do not have under the condition that guarantees three kinds of former grade aluminium alloy aluminium base not burnings separately of the waste and old aluminum easy open can of composition both at home and abroad at present, the waste and old aluminum easy open can of melting extracts the technology of 3004 aluminium alloy can body material.
Summary of the invention and embodiment: the present invention is directed to the deficiencies in the prior art and defective, the method that provides a kind of indirect heating mode melting and purifying worn-out aluminum easy open can to regenerate 3004 aluminium alloys.Concrete grammar of the present invention is as follows: design agitator, raw material squeezer, the crucible oven of insulation cover (conduit is arranged in the middle of the lid), the lifting of above-mentioned three kinds of device adjustment heights are housed above one, can comprehensively move, as required, the wheel flow operation, the aluminum alloy melt after the purification is drawn outside the stove through the crucible bottom conduit.Flux by carrier granule and raw material (waste and old aluminum easy open can or waste and old 3004 can body material) in order layering add smelting pot.Evenly cover one deck flux layer on carrier material surface, a carrier material material must have high melt point and sufficient intensity, does not melt in melting and purifying aluminium alloy process, not cracked.The carrier granule that density＞molten aluminium has been covered flux layer is placed on the crucible bottom surface and makes filtering layer, and the filtration aspect is higher than the crucible bottom conduit and inserts mouthful.The carrier granule size is greater than inserts a mouthful bore.Put into waste and old aluminum easy open can or waste and old 3004 can body material on filtering layer after, put the carrier granule that density＜molten aluminium covered flux layer into and make tectum, carrier granule size consumption is selected according to actual needs.The control furnace temperature, when furnace temperature was lower than waste and old aluminum easy open can raw material softening temperature, volatile matter was drawn through the insulation cover intermediate pipe and is lighted in the crucible.When the raw material softening temperature, extruding tectum and raw material layer form aluminium alloy liquid layer and tectum together, reach all fused temperature of flux and raw material, and carrier particle surface covers one deck flux film and forms filtering layer.After tectum forms, Chemical Composition standard according to 3004 aluminium alloys, adjust the alloying element Chemical Composition, fully stir (making agitator paddle be in the aluminium alloy liquid layer all the time) and make the temperature uniformity, quicken fusing, the broken aluminum alloy melt that enters of oxide film of waste and old aluminum easy open can or waste and old 3004 can body material original surfaces, stop to stir leave standstill after, after meeting the 3004 aluminum alloy melts process filtering layer purification of Chemical Composition standard, draw outside the stove by the crucible bottom conduit.
By being covered with flux layer, the carrier of a density＜molten aluminium material is formed, the tectum that in the process of waste aluminium alloy raw material softening temperature extruding tectum and raw material layer, forms with the aluminium alloy liquid layer, can control the scaling loss of the waste aluminium alloy aluminium base and alloying element in the melting and purifying process that meets alloy composition standard effectively, except that alloying element magnesium (Mg), the Chemical Composition of all the other alloying elements remains unchanged substantially in the former waste aluminium alloy, all reach alloy composition standard, and can control the scaling loss amount of the aluminium alloy of alloying element magnesium (Mg) different content effectively at melting and purifying process interalloy element magnesium (Mg), scaling loss amount according to alloying element magnesium (Mg), under the condition of not adding primary aluminium (fine aluminium), add alloying element magnesium (Mg), recover the content of the alloying element magnesium (Mg) of former aluminium alloy, and make whole alloying elements meet former grade aluminium alloy Chemical Composition standard.After tectum forms, Chemical Composition standard according to 3004 aluminium alloys, adjust the alloying element Chemical Composition, fully stir (making agitator paddle be in the aluminium alloy liquid layer all the time), make the temperature uniformity, quicken fusing, stop to stir leave standstill after, the aluminum alloy melt that meets 3004 aluminum alloy chemically composition standards after the filtering layer purification, is drawn outside the stove by the crucible bottom conduit.
Refining plant by the carrier of a covering flux film filtration, purification molten aluminium that material is formed belongs to stove external purifying device, is introduced into the furnace purge system, has improved the degree of purification of aluminium alloy melt nonmetal inclusion.
The present invention has aluminium alloy rate of recovery height, and the evident characteristic that can produce the fine aluminum alloy also has less investment, can operate continuously, and treatment capacity is big, and reproduction speed is fast, and free of contamination characteristics have huge social benefit and economic benefit.
Provide following three examples in conjunction with content of the present invention:
The regenerating waste used aluminum easy open can body of the embodiment one melting and purifying material (trade mark: 3004)
The table 1 100% waste and old aluminum easy open can body material (trade mark: 3004)
| Chemical Composition (wt%) | Mg | Si | Fe | Cu | Zn | Mn | Cr | Ti |
| 0.9 | 0.28 | 0.41 | 0.19 | 0.03 | 1.0 | 0.02 | 0.02 | |
| The Chemical Composition standard | 0.8～1.3 | 0.30 | ≤0.70 | ≤0.25 | ≤0.25 | 1.0～1.5 | ≤0.05 | ≤0.05 |
| Contrast | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
Table 2 100% waste and old aluminum easy open can body material+0.1% alloying element magnesium (Mg)
| Chemical Composition (wt%) | Mg | Si | Fe | Cu | Zn | Mn | Cr | Ti |
| 1.0 | 0.28 | 0.41 | 0.19 | 0.03 | 1.0 | 0.02 | 0.02 | |
| The Chemical Composition standard | 0.8～1.3 | 0.30 | ≤0.70 | ≤0.25 | ≤0.25 | 1.0～1.5 | ≤0.05 | ≤0.05 |
| Contrast | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
The embodiment two melting and purifying worn-out aluminum easy open can raw materials regeneration trade mark 3004 aluminium alloy can body material
Table 1 100% complete waste and old aluminum easy open can raw material (can body+cover+jar draw ring)
| Chemical Composition (wt%) | Mg | Si | Fe | Cu | Zn | Mn | Cr | Ti |
| 1.0 | 0.27 | 0.38 | 0.16 | 0.03 | 0.8 | 0.02 | 0.02 | |
| The Chemical Composition standard | 0.8～1.3 | ≤0.30 | ≤0.70 | ≤0.25 | ≤0.25 | 1.0～1.5 | ≤0.05 | ≤0.05 |
| Contrast | Qualified | Qualified | Qualified | Qualified | Qualified | Defective | Qualified | Qualified |
Table 2 100% complete waste and old aluminum easy open can raw material (can body+cover+jar draw ring)+0.27% manganese
(Mn) additive (manganese additive contains manganese 75%)
| Chemical Composition (wt%) | Mg | Si | Fe | Cu | Zn | Mn | Cr | Ti |
| 1.0 | 0.27 | 0.38 | 0.16 | 0.03 | 1.0 | 0.02 | 0.02 | |
| The Chemical Composition standard | 0.8～1.3 | ≤0.30 | ≤0.70 | ≤0.25 | ≤0.25 | 1.0～1.5 | ≤0.05 | ≤0.05 |
| Contrast | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
Embodiment three melting and purifyings (waste and old aluminum easy open can raw material+waste and old aluminum easy open can body material) the regeneration trade mark 3004
The can body material
The waste and old aluminum easy open can body material of table 1 50% complete waste and old aluminum easy open can raw material+50%
| Chemical Composition (wt%) | Mg | Si | Fe | Cu | Zn | Mn | Cr | Ti |
| 1.0 | 0.28 | 0.39 | 0.18 | 0.03 | 0.9 | 0.02 | 0.02 | |
| The Chemical Composition standard | 0.8～1.3 | ≤0.30 | 0.70 | ≤0.25 | ≤0.25 | 1.0～1.5 | ≤0.05 | ≤0.05 |
| Contrast | Qualified | Qualified | Qualified | Qualified | Qualified | Defective | Qualified | Qualified |
The waste and old aluminum easy open can body material of table 2 50% complete waste and old aluminum easy open can raw material+50%+0.14% manganese
(Mn) additive (manganese additive contains manganese 75%)
| Chemical Composition (wy%) | Mg | Si | Fe | Cu | Zn | Mn | Cr | Ti |
| 1.0 | 0.28 | 0.39 | 0.18 | 0.03 | 1.0 | 0.02 | 0.02 | |
| The Chemical Composition standard | 0.8～1.3 | ≤0.30 | 0.70 | ≤0.25 | ≤0.25 | 1.0～1.5 | ≤0.05 | ≤0.05 |
| Contrast | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
Claims (3)
1. the melting and purifying worn-out aluminum easy open can method of 3004 aluminium alloys of regenerating, it is characterized in that concrete grammar is as follows: design the crucible oven that agitator, raw material squeezer, insulation cover (conduit is arranged in the middle of the lid) are housed above, the lifting of above-mentioned three kinds of device adjustment heights, can comprehensively move, as required, the wheel flow operation, the aluminum alloy melt after the purification is drawn outside the stove through the crucible bottom conduit.Flux by carrier granule and raw material (waste and old aluminum easy open can or waste and old 3004 can body material) in order layering add smelting pot.Evenly cover one deck flux layer on carrier material surface, the carrier granule material must have high melt point and sufficient intensity, does not melt in melting and purifying aluminium alloy process, not cracked.The carrier granule that density＞molten aluminium has been covered flux layer is placed at the bottom of the crucible and makes filtering layer, the filtration aspect is higher than the crucible bottom conduit and inserts mouth, the carrier granule size is greater than inserts a mouthful bore, after on filtering layer, putting into waste and old aluminum easy open can or waste and old 5182 cover material, put the carrier granule that density＜molten aluminium covered flux layer into and make tectum, carrier granule size consumption is selected according to actual needs.When the raw material softening temperature, extruding tectum and raw material layer form aluminium alloy liquid layer and tectum together, reach all fused temperature of flux and raw material, and carrier particle surface covers one deck flux film and forms filtering layer.After tectum forms, Chemical Composition standard according to 3004 aluminium alloys, adjust the alloying element Chemical Composition, fully stir (agitator paddle is in the aluminium alloy liquid layer all the time) and make the temperature uniformity, quicken fusing, the broken aluminum alloy melt that enters of oxide film of waste and old aluminum easy open can or waste and old 3004 can body material original surfaces, stop to stir leave standstill after, after meeting the 3004 aluminum alloy melts process filtering layer purification of Chemical Composition standard, draw outside the stove by the crucible bottom conduit.
2. the regenerate method of 3004 aluminium alloys of this melting and purifying worn-out aluminum easy open can according to claim 1, it is characterized in that by being covered with flux layer, the carrier of a density＜molten aluminium material is formed, the tectum that in the process of waste aluminium alloy raw material softening temperature extruding tectum and raw material layer, forms with the aluminium alloy liquid layer, can control the scaling loss of the waste aluminium alloy aluminium base and alloying element in the melting and purifying process that meets alloy composition standard effectively, except that alloying element magnesium (Mg), the Chemical Composition of all the other alloying elements remains unchanged substantially in the former waste aluminium alloy, all reach alloy composition standard, and can control the scaling loss amount of the aluminium alloy of alloying element magnesium (Mg) different content effectively at melting and purifying process interalloy element magnesium (Mg), scaling loss amount according to alloying element magnesium (Mg), under the condition of not adding primary aluminium (fine aluminium), add alloying element magnesium (Mg), recover the content of the alloying element magnesium (Mg) of former aluminium alloy, and make whole alloying elements meet former grade aluminium alloy Chemical Composition standard.After tectum forms, Chemical Composition standard according to 3004 aluminium alloys, adjust the alloying element Chemical Composition, fully stir (making agitator paddle be in the aluminium alloy liquid layer all the time), make the temperature uniformity, quicken fusing, stop to stir leave standstill after, the aluminum alloy melt that meets 3004 aluminum alloy chemically composition standards after the filtering layer purification, is drawn outside the stove by the crucible bottom conduit.
3. the regenerate method of 3004 aluminium alloys of this melting and purifying worn-out aluminum easy open can according to claim 1, the refining plant that it is characterized in that the filtration, purification aluminium alloy melt be made up of the carrier granule of covering flux film belongs to stove external purifying device, be introduced into the furnace purge system, improved the degree of purification of aluminium alloy melt nonmetal inclusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510037451 CN1760388A (en) | 2005-09-26 | 2005-09-26 | Method for regenerating 3004 aluminum alloy by melting and purifying worn-out aluminum tear-off tin |
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| CN 200510037451 CN1760388A (en) | 2005-09-26 | 2005-09-26 | Method for regenerating 3004 aluminum alloy by melting and purifying worn-out aluminum tear-off tin |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407522A (en) * | 2015-03-03 | 2017-11-28 | Ds液体有限公司 | aluminium smelting furnace |
| CN108374109A (en) * | 2018-02-27 | 2018-08-07 | 西安理工大学 | A method of preparing secondary aluminium alloy with discarded pop can |
| CN111809089A (en) * | 2020-07-31 | 2020-10-23 | 河南泰鸿新材料有限公司 | 3004 aluminum alloy bottle cap material and preparation method thereof |
-
2005
- 2005-09-26 CN CN 200510037451 patent/CN1760388A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407522A (en) * | 2015-03-03 | 2017-11-28 | Ds液体有限公司 | aluminium smelting furnace |
| CN108374109A (en) * | 2018-02-27 | 2018-08-07 | 西安理工大学 | A method of preparing secondary aluminium alloy with discarded pop can |
| CN111809089A (en) * | 2020-07-31 | 2020-10-23 | 河南泰鸿新材料有限公司 | 3004 aluminum alloy bottle cap material and preparation method thereof |
| CN111809089B (en) * | 2020-07-31 | 2022-01-28 | 河南泰鸿新材料有限公司 | 3004 aluminum alloy bottle cap material and preparation method thereof |
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