JPH0665655A - Method for recovering aluminum from laminated foil - Google Patents
Method for recovering aluminum from laminated foilInfo
- Publication number
- JPH0665655A JPH0665655A JP24430992A JP24430992A JPH0665655A JP H0665655 A JPH0665655 A JP H0665655A JP 24430992 A JP24430992 A JP 24430992A JP 24430992 A JP24430992 A JP 24430992A JP H0665655 A JPH0665655 A JP H0665655A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- foil
- dross
- laminated
- melted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 78
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000011888 foil Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims description 21
- 238000011084 recovery Methods 0.000 abstract description 17
- 238000002844 melting Methods 0.000 abstract description 11
- 230000008018 melting Effects 0.000 abstract description 11
- 239000000295 fuel oil Substances 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract 2
- 239000012803 melt mixture Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010030 laminating Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ラミネ−ト箔からアル
ミニウムを回収する方法、詳しくはアルミニウム箔と
紙、樹脂フィルム等を積層した材料（以下、ラミネ−ト
箔）からアルミニウム分を回収する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering aluminum from a laminate foil, and more specifically to recovering aluminum from a material in which aluminum foil is laminated with paper, a resin film or the like (hereinafter, laminate foil). Regarding the method.
【０００２】[0002]
【従来の技術】アルミニウム箔に紙やポリエチレン、ポ
リプロピレン、ポリエステル等の樹脂フィルムを積層し
たラミネ−ト箔は包装材料として広く使用されている。
積層されるアルミニウム箔は、用途に応じて２０μｍ以
下の薄いものから３０μｍ以上の厚いものまで種々使用
される。従来、ラミネ−ト箔からアルミニウム分を回収
する方法は、アルミニウム箔の厚さが例えば３０μｍ以
上の厚いものについては、既設のルツボ炉や反射炉に装
入して一部のアルミニウムを取り出しているが、厚さが
２０μｍ以下、特に１０μｍ以下の薄いものについては
溶解時に酸化してしまいアルミニウムの回収はほとんど
不可能である。非酸化性雰囲気中で溶解することにより
アルミニウムを分離する方法（特公昭62-47932号公報)
も提案されているが、コスト高となる上、回収率は必ず
しも十分でなく、薄箔についてはほとんど廃棄処分され
ているのが現状である。2. Description of the Related Art A laminate foil obtained by laminating a paper film or a resin film such as polyethylene, polypropylene or polyester on an aluminum foil is widely used as a packaging material.
The laminated aluminum foil is variously used, depending on the application, from thin ones of 20 μm or less to thick ones of 30 μm or more. Conventionally, in the method of recovering aluminum from the laminate foil, when the thickness of the aluminum foil is, for example, 30 μm or more, the aluminum foil is charged into an existing crucible furnace or reverberatory furnace and a part of the aluminum is taken out. However, for thin materials having a thickness of 20 μm or less, particularly 10 μm or less, oxidation occurs during melting and it is almost impossible to recover aluminum. Method for separating aluminum by melting in a non-oxidizing atmosphere (Japanese Patent Publication No. 62-47932)
However, in addition to the high cost, the recovery rate is not always sufficient, and thin foils are almost all discarded at present.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、アルミニウ
ムの溶解過程において生成し、溶湯表面に浮上するアル
ミニウム酸化物や不純物からなるアルミニウムドロスか
らアルミニウム分を取り出す工程を利用してラミネ−ト
箔からアルミニウムを回収しようとするものであり、そ
の目的とするところは、２０μｍ以下の薄いアルミニウ
ム箔を積層したラミネ−ト箔を処理した場合においても
優れた回収率が得られるラミネ−ト箔からアルミニウム
を回収する方法を提供することにある。DISCLOSURE OF THE INVENTION The present invention utilizes a process of extracting an aluminum component from an aluminum dross which is produced in the melting process of aluminum and floats on the surface of the molten metal and which is composed of aluminum oxide and impurities. The purpose of the present invention is to recover aluminum, and the purpose thereof is to obtain aluminum from a laminate foil which has an excellent recovery rate even when a laminate foil in which thin aluminum foil having a thickness of 20 μm or less is laminated is treated. It is to provide a method of collecting.
【０００４】[0004]
【課題を解決するための手段】上記の目的を達成するた
めの本発明によるラミネ−ト箔からアルミニウムを回収
する方法は、アルミニウムドロスとラミネ−ト箔の混合
溶解物を圧縮してアルミニウムを回収することを構成上
の特徴とし、アルミニウムドロスとラミネ−ト箔の合計
量に対して、５〜５０重量％のラミネ−ト箔を混合する
ことを好ましい態様とする。In order to achieve the above object, a method of recovering aluminum from a laminate foil according to the present invention is a method in which a mixed melt of aluminum dross and laminate foil is compressed to recover aluminum. This is a characteristic feature of the present invention, and a preferable mode is to mix 5 to 50% by weight of the laminate foil with respect to the total amount of the aluminum dross and the laminate foil.
【０００５】アルミニウムの溶解作業において生成する
アルミニウムドロスは、通常、回転式溶解炉に装入し重
油バ−ナ−で加熱溶解した後、圧縮装置に入れて圧縮し
アルミニウムを取り出している。本発明は、アルミニウ
ムドロスとラミネ−ト箔の混合溶解物を圧縮装置に入れ
て圧縮しアルミニウムを回収するものである。混合溶解
物の形成は、加熱溶解したアルミニウムドロス中にラミ
ネ−ト箔を混合して溶解してもよく、はじめにアルミニ
ウムドロスとラミネ−ト箔とを混合し加熱溶解してもよ
い。ラミネ−ト箔は既知の圧縮装置により圧塊状態とし
て使用する。The aluminum dross produced in the melting operation of aluminum is usually charged into a rotary melting furnace, heated and melted by a heavy oil burner, and then compressed in a compression device to take out aluminum. In the present invention, a mixed melt of aluminum dross and laminate foil is put into a compression device and compressed to recover aluminum. To form the mixed melt, the laminate foil may be mixed and melted in the heat-melted aluminum dross, or the aluminum dross and the laminate foil may be first mixed and heat-melted. The laminate foil is used in the compacted state by means of known compression equipment.
【０００６】アルミニウムドロスに対するラミネ−ト箔
の混合比を変え、回転式溶解炉中で重油バ−ナ−により
混合溶解した後、圧縮装置で圧縮しアルミニウムを回収
する試験を行った場合のデ−タを表１に示す。処理した
ラミネ−ト箔としては、積層されたアルミニウム箔の厚
さが７〜９μｍ以上のものを使用した。[0006] The data in the case of performing a test of recovering aluminum by changing the mixing ratio of the laminate foil to aluminum dross, mixing and melting with a heavy oil burner in a rotary melting furnace, and compressing with a compression device Table 1 shows the data. As the treated laminating foil, a laminated aluminum foil having a thickness of 7 to 9 μm or more was used.
【０００７】[0007]
【表１】 [Table 1]
【０００８】表１にみられるように、ラミネ−ト箔を混
合せずにアルミニウムドロスのみを溶解、圧縮した場合
( 試験No.5) のアルミニウム回収率に比べ、ラミネ−ト
箔を混合して溶解し圧縮してアルミニウムを取り出した
場合( 試験No.1〜4)は、回収率が増加している。図１
は、さらに多くの試験結果に基づいてラミネ−ト箔混合
率とアルミニウム回収率との関係を示したものである。
図１によれば、ラミネ−ト箔からアルミニウムを回収す
る場合、ドロスに対するラミネ−ト箔の混合率を５〜５
０重量％の範囲、さらに好ましくは１０〜３０重量％と
することにより、効率のよいアルミニウムの回収効果が
達成される。アルミニウム回収率のピ−クはラミネ−ト
箔混合率２０〜２５％あたりにみられる。As shown in Table 1, when aluminum dross alone is melted and compressed without mixing the laminate foil
Compared with the aluminum recovery rate of (Test No. 5), when the laminate foil was mixed, melted and compressed to take out aluminum (Test Nos. 1 to 4), the recovery rate increased. Figure 1
Shows the relationship between the laminating foil mixing rate and the aluminum recovery rate based on more test results.
According to FIG. 1, when aluminum is recovered from the laminate foil, the mixing ratio of the laminate foil to the dross is 5 to 5.
By setting the content in the range of 0% by weight, more preferably 10 to 30% by weight, an efficient aluminum recovery effect can be achieved. The peak of aluminum recovery rate is seen around the mixing rate of laminate foil of 20 to 25%.
【０００９】さらに表１によれば、ラミネ−ト箔混合率
が多くなるほど加熱溶解に必要な重油の使用量が減少
し、溶解量当たりの燃費、回収Alkg当たり燃費が向上し
ているのが認められる。これはラミネ−ト箔の積層樹脂
フィルムや紙が燃焼して加熱源となっているためであ
り、この直接加熱効果により、ラミネ−ト箔からのアル
ミニウムの回収が促進されるとともにドロスからのアル
ミニウム回収増も期待される。Further, according to Table 1, as the mixing ratio of the laminate foil increases, the amount of heavy oil required for heating and melting decreases, and the fuel efficiency per melting amount and the fuel efficiency per recovered Alkg are improved. To be This is because the laminated resin film or paper of the laminating foil burns and becomes a heat source, and this direct heating effect promotes the recovery of aluminum from the laminating foil and the aluminum from the dross. Increased collection is also expected.
【００１０】[0010]
【作用】本発明は、ラミネ−ト箔をアルミニウムドロス
とともに溶解することにより、ラミネ−ト箔に積層され
るアルミニウム箔が１０μｍ以下の薄いものであっても
酸化が防止され、ラミネ−ト箔中の樹脂フィルムや紙の
燃焼による直接加熱がアルミニウムの回収を促進して高
い回収効果を達成する。According to the present invention, the laminate foil is melted together with the aluminum dross to prevent oxidation even if the aluminum foil laminated on the laminate foil is as thin as 10 μm or less. Direct heating by burning the resin film and paper promotes recovery of aluminum and achieves high recovery effect.
【００１１】[0011]
【実施例】以下、本発明を実施例に基づいて説明する。 実施例 回転式溶解炉にアルミニウムドロスと７〜９μｍ厚さの
アルミニウム箔を積層したラミネ−ト箔の圧縮屑を装入
し、重油バ−ナ−で加熱溶解した後、混合溶解物を圧縮
装置により圧縮してアルミニウムを取り出した。詳細を
表２に示す。アルミニウムの回収率は１２．９〜１７．
５重量％、平均１５．１重量％であった。一方アルミニ
ウムドロスのみを溶解し圧縮してアルミニウムを取り出
した場合は、平均回収率１０．７％であり、ラミネ−ト
箔からのアルミニウム回収率は平均４．４％であった。
圧塊状としたラミネ−ト箔のみを回転炉に入れて溶解し
たが、アルミニウム分の酸化が激しくアルミニウムの回
収はほとんどできなかった。なお、本実施例において、
アルミニウムドロスとラミネ−ト箔の混合溶解に際し途
中で重油バ−ナ−を止める試験も行ったが、バ−ナ−を
止めた場合でもラミネ−ト箔中の積層樹脂分が燃焼し加
熱源となっているため、加熱溶解過程が続行した。EXAMPLES The present invention will be described below based on examples. Example A rotary melting furnace was charged with compression waste of a laminate foil in which aluminum dross and an aluminum foil having a thickness of 7 to 9 μm were stacked, heated and melted with a heavy oil burner, and then the mixed melt was compressed by a compression device. And aluminum was taken out. Details are shown in Table 2. The recovery rate of aluminum is 12.9 to 17.
The amount was 5% by weight, and the average was 15.1% by weight. On the other hand, when only aluminum dross was melted and compressed to take out aluminum, the average recovery rate was 10.7%, and the average aluminum recovery rate from the laminate foil was 4.4%.
Only the pressed laminate foil was put into a rotary furnace and melted, but the aluminum content was so oxidized that almost no aluminum could be recovered. In this example,
A test was also conducted to stop the heavy oil burner on the way of mixing and melting the aluminum dross and the laminate foil, but even when the burner was stopped, the laminated resin component in the laminate foil burned and became a heat source. Therefore, the heating dissolution process was continued.
【００１２】[0012]
【表２】 [Table 2]
【００１３】[0013]
【発明の効果】以上のとおり、本発明のラミネ−ト箔か
らアルミニウムを回収する方法によれば、薄箔を積層し
たラミネ−ト箔からのアルミニウムの回収も効果的に行
うことができ、回収過程における熱源も節減することが
できる。As described above, according to the method for recovering aluminum from a laminate foil of the present invention, it is possible to effectively recover aluminum from a laminate foil in which thin foils are laminated. The heat source in the process can also be saved.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年３月１６日[Submission date] March 16, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１３】[0013]
【発明の効果】以上のとおり、本発明のラミネート箔か
らアルミニウムを回収する方法によれば、薄箔を積層し
たラミネート箔からのアルミニウムの回収も効果的に行
うことができ、回収過程における熱源も節減することが
できる。As described above, according to the method for recovering aluminum from a laminated foil of the present invention, aluminum can be effectively recovered from a laminated foil in which thin foils are laminated, and a heat source in the recovery process is also used. You can save money.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Name of item to be corrected] Brief description of the drawing
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図面の簡単な説明】[Brief description of drawings]
【図１】ラミネート箔混合率とアルミニウム回収率との
関係を示すグラフである。FIG. 1 is a graph showing a relationship between a laminate foil mixing ratio and an aluminum recovery ratio.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平野 宏茲 静岡県小笠郡大須賀町西大渕6303番地の２ 大須賀アルミ株式会社内 (72)発明者 小森 章夫 東京都千代田区神田錦町３丁目19番地 住 軽アルミ箔株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroyuki Hirano Inoue Hiroshi Hirano 6203 Nishiobuchi, Osuka-cho, Ogasa-gun, Shizuoka Inside Osuka Aluminum Co., Ltd. Light Aluminum Foil Co., Ltd.
Claims (3)
ネ−ト箔との混合溶解物を圧縮してアルミニウムを回収
することを特徴とするラミネ−ト箔からアルミニウムを
回収する方法。1. A method for recovering aluminum from a laminate foil, which comprises recovering aluminum by compressing a mixed melt of a heat-melted aluminum dross and a laminate foil.
計量に対して、５〜５０重量％のラミネ−ト箔を混合す
る請求項１記載のラミネ−ト箔からアルミニウムを回収
する方法。2. A method for recovering aluminum from a laminate foil according to claim 1, wherein 5 to 50% by weight of the laminate foil is mixed with the total amount of the aluminum dross and the laminate foil.
箔の厚さが２０μｍ以下である請求項２記載のラミネ−
ト箔からアルミニウムを回収する方法。3. The laminator according to claim 2, wherein the aluminum foil laminated on the laminate foil has a thickness of 20 μm or less.
A method of recovering aluminum from foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24430992A JPH0665655A (en) | 1992-08-20 | 1992-08-20 | Method for recovering aluminum from laminated foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24430992A JPH0665655A (en) | 1992-08-20 | 1992-08-20 | Method for recovering aluminum from laminated foil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0665655A true JPH0665655A (en) | 1994-03-08 |
Family
ID=17116822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24430992A Pending JPH0665655A (en) | 1992-08-20 | 1992-08-20 | Method for recovering aluminum from laminated foil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0665655A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7404776B2 (en) | 2004-05-31 | 2008-07-29 | Tsubakimoto Chain Co. | Hydraulic tensioner |
| US7927242B2 (en) | 2007-06-19 | 2011-04-19 | Tsubakimoto Chain Co. | Downward angle settable hydraulic tensioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57502132A (en) * | 1980-12-03 | 1982-12-02 | ||
| JPS61291933A (en) * | 1985-06-18 | 1986-12-22 | Chiyoda Yuka Eng Kk | Manufacture of secondary metal from aluminum packaging material |
| JPS6247932A (en) * | 1985-08-26 | 1987-03-02 | Nec Home Electronics Ltd | Display device |
| JPH03243731A (en) * | 1990-02-22 | 1991-10-30 | Mitsubishi Materials Corp | Method for recovering aluminum |
-
1992
- 1992-08-20 JP JP24430992A patent/JPH0665655A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57502132A (en) * | 1980-12-03 | 1982-12-02 | ||
| JPS61291933A (en) * | 1985-06-18 | 1986-12-22 | Chiyoda Yuka Eng Kk | Manufacture of secondary metal from aluminum packaging material |
| JPS6247932A (en) * | 1985-08-26 | 1987-03-02 | Nec Home Electronics Ltd | Display device |
| JPH03243731A (en) * | 1990-02-22 | 1991-10-30 | Mitsubishi Materials Corp | Method for recovering aluminum |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7404776B2 (en) | 2004-05-31 | 2008-07-29 | Tsubakimoto Chain Co. | Hydraulic tensioner |
| US7927242B2 (en) | 2007-06-19 | 2011-04-19 | Tsubakimoto Chain Co. | Downward angle settable hydraulic tensioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH1074539A (en) | Method for recovering reusable material from used lithium battery | |
| JP3079287B2 (en) | How to recover valuable resources from used lithium batteries | |
| WO2022019172A1 (en) | Method for recovering valuable metal | |
| CN104955969B (en) | The recovery method of heavy rare earth element | |
| CN107191943B (en) | Incineration disposal draff processing method | |
| JPH0665655A (en) | Method for recovering aluminum from laminated foil | |
| JP3450684B2 (en) | How to recover valuable resources from used lithium batteries | |
| JP3384270B2 (en) | Recovery of valuable metals from incinerated ash from municipal waste | |
| Barakat | The pyrometallurgical processing of galvanizing zinc ash and flue dust | |
| JP3461300B2 (en) | Method for recovering valuable resources from used lithium-manganese batteries | |
| KR100438473B1 (en) | Process of recovering valuable metal | |
| CN108165750A (en) | Aluminium and aluminium alloy scrap recovery and treatment method and application | |
| KR20210036287A (en) | Treatment method of waste battery | |
| JP2021161455A (en) | Method for recovering valuable metal from waste lithium-ion battery | |
| US20040187642A1 (en) | Method of recycling metallic coated scrap pieces | |
| JPH10113647A (en) | Method for recovering valuable metal from refuse incineration ash | |
| JPS644572B2 (en) | ||
| WO2023026854A1 (en) | Electric furnace and method for producing valuable metal | |
| Schlesinger | Recycling of Aluminum | |
| WO2024048249A1 (en) | Method for recovering valuable metal | |
| JP7215517B2 (en) | Valuable metal manufacturing method | |
| JPS6357147B2 (en) | ||
| JPS5879581A (en) | Electromelting method of fly ash | |
| TWI250214B (en) | Method for smelting metal tin from tin-containing compound | |
| JP2021188068A (en) | Preparation method of raw material to be melted, and valuable metal recovery method |