JPH0649550A - Treatment of hot dross of aluminum - Google Patents
Treatment of hot dross of aluminumInfo
- Publication number
- JPH0649550A JPH0649550A JP22093792A JP22093792A JPH0649550A JP H0649550 A JPH0649550 A JP H0649550A JP 22093792 A JP22093792 A JP 22093792A JP 22093792 A JP22093792 A JP 22093792A JP H0649550 A JPH0649550 A JP H0649550A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- dross
- hot dross
- impact
- plate
- 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.)
- Granted
Links
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
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はアルミニウムのホット
ドロスを処理する方法に係るものである。FIELD OF THE INVENTION The present invention relates to a method for treating aluminum hot dross.
【０００２】[0002]
【従来の技術】従来のアルミニウムのホットドロスの処
理方法はアルミニウム溶解炉から取出されたホットドロ
スにフラックスを加えて酸化反応させて発熱させ、この
発熱によりアルミニウムのホットドロスの温度を８５０
℃以上にして緻密で保護性の強い酸化皮膜（γ−Ａｌ2
Ｏ3 、スピネル型立方晶）を保護性の弱い酸化皮膜（α
−Ａｌ2 Ｏ3 、六方晶）に変化させる。次に保護性の弱
い酸化皮膜に衝撃力を加えて酸化皮膜に閉込められてい
た溶融アルミニウムと酸化物（酸化皮膜）と分離させ、
機械的撹拌作用を利用して溶融アルミニウム粒を大きく
して容器の下方に降下させて溶融アルミニウムを回収
し、残ったホットドロスを粉体の状態で冷却するという
処理方法がある。2. Description of the Related Art A conventional aluminum hot dross treatment method is to add flux to the hot dross taken out from an aluminum melting furnace to cause an oxidation reaction to generate heat, and the heat generation causes the temperature of the aluminum hot dross to rise to 850.
Dense and protective oxide film (γ-Al 2
O 3, spinel cubic) protection weakly oxide film (alpha
-Al 2 O 3, is changed to hexagonal). Next, impact force is applied to the weakly protective oxide film to separate it from the molten aluminum and oxide (oxide film) trapped in the oxide film,
There is a treatment method in which a molten aluminum grain is enlarged by utilizing a mechanical stirring action and is lowered below a container to recover the molten aluminum, and the remaining hot dross is cooled in a powder state.
【０００３】[0003]
【発明が解決しようとする課題】この従来のホットドロ
スの処理方法では多量のフラックスを使用するために塩
化物を多量に含んだ粉塵を発生するという問題点があ
り、またフラックスによる酸化反応と窒化反応に基づい
て爆発的高温発生による環境破壊を起すおそれがあると
いう問題点があった。This conventional method for treating hot dross has a problem that dust containing a large amount of chloride is generated because a large amount of flux is used, and the oxidation reaction and nitriding by the flux occur. There has been a problem that the reaction may cause environmental destruction due to the generation of explosive high temperature.
【０００４】この発明は従来のアルミニウムのホットド
ロスの処理方法が有するこれらの問題点を解消し、粉塵
を発生しないこと、爆発的高温発生による環境破壊を起
こさないこと、アルミニウムのホットドロスから空気を
抜いてホットドロスのアルミニウムと空気中の酸素、窒
素とによる酸化反応と窒化反応を防止すること、酸化反
応と窒化反応による発熱を防止すること、金属アルミニ
ウムの消失を防止することなどを目的としたものであ
る。The present invention solves these problems of the conventional aluminum hot dross treatment method, does not generate dust, does not cause environmental damage due to explosive high temperature generation, and removes air from the aluminum hot dross. The purpose is to prevent the oxidation reaction and nitriding reaction by removing hot dross aluminum and oxygen and nitrogen in the air, preventing heat generation due to the oxidation reaction and nitriding reaction, and preventing the disappearance of metallic aluminum. It is a thing.
【０００５】[0005]
【課題を解決するための手段】この発明は多孔底板を設
けた容器にアルミニウムのホットドロスを入れてこの容
器に入れたアルミニウムのホットドロスの上に金属板を
載置してから、この金属板に上から衝撃を加えては休む
という工程を繰返してアルミニウムのホットドロスを処
理する方法である。According to the present invention, an aluminum hot dross is placed in a container provided with a perforated bottom plate, the metal plate is placed on the aluminum hot dross placed in the container, and then the metal plate is placed. It is a method of treating hot dross of aluminum by repeating the steps of applying a shock from above and resting.
【０００６】[0006]
【作用】多孔底板を設けた容器にアルミニウムのホット
ドロスを入れて上から衝撃を加えては休むという工程を
繰返すことによりアルミニウムのホットドロスの中に存
在する空気はドロスより追出されるし、ドロス中の金属
アルミニウムは容器の多孔底板より回収される。ドロス
の中に空気が存在するとドロス中のアルミニウムが空気
中の酸素、窒素と反応するが、空気をドロスより追出し
たことによりアルミニウムが酸化反応と窒化反応するこ
とが防止されるとともに酸化反応と窒化反応による発熱
も防止されて金属アルミニウムの消失が防止される。か
つ発熱が防止さるるので高温発熱による環境が防止され
る。そして固形化された固形物の中に金属アルミニウム
が多く含有されるし、固形化されるので粉塵が発生され
ない。[Function] By repeating the process of putting aluminum hot dross in a container provided with a perforated bottom plate, applying an impact from above and resting, the air present in the aluminum hot dross is expelled from the dross. The metallic aluminum contained therein is recovered from the porous bottom plate of the container. When air is present in the dross, aluminum in the dross reacts with oxygen and nitrogen in the air, but the removal of the air from the dross prevents the aluminum from undergoing an oxidation reaction and a nitriding reaction and also causes an oxidation reaction. The heat generated by the nitriding reaction is also prevented, and the disappearance of metallic aluminum is prevented. In addition, since heat generation is prevented, the environment due to high temperature heat generation is prevented. Further, since a large amount of metallic aluminum is contained in the solidified solid and is solidified, dust is not generated.
【０００７】[0007]
【実施例】次にこの発明のアルミニウムのホットドロス
の処理方法を図面とともに１実施例について説明する。
アルミニウム溶解炉から掻き出した１００ｋｇアルミニ
ウムのホットドロスを耐熱鋼製円筒体２と耐熱鋼製多孔
底板３とからなる容器１に入れる。この容器１の円筒体
２は内側直径が４００ｍｍで厚さ５．０ｍｍである。多
孔底板３は直径８ｍｍの孔を多数設けた厚さ６ｍｍのも
のであり、この多孔底板３を円筒体２の下部に着脱自在
に設けた容器１である。次に容器１の中に入れたアルミ
ニウムのホットドロス４の上に直径が３９９ｍｍで厚さ
２０ｍｍの耐熱鋼の金属板５を載置し、衝撃体６を金属
板５の上にセットする。この衝撃体６により毎分４００
回で８０馬力（ＰＳ）の衝撃を金属板５を介してアルミ
ニウムのホットドロス４に４秒間加える。この衝撃力に
よりアルミニウムのホットドロス内部に混入されている
空気は逃げ場を求めて容器１の外側に移動し、ドロス４
の上は金属板５が存在するので空気はほとんど上から追
い出されずに多孔底板３の孔に向かって空気は下に移動
してこの孔から空気は外に追い出される。また衝撃力に
より炉からホットドロスとともに混入した溶融アルモニ
ウムが空気とともに排出され回収される。この１回目の
衝撃によりホットドロス４は図２に図示したように、高
さが１００ｍｍ位低くなって、体積を減少し、ホットド
ロス上の金属板５と衝撃体６との間に間隔Ａが発生す
る。この衝撃体６を図２から図３のように金属板５の上
に降下させてヒットし、前回の衝撃終了時より１５秒後
に前回と同じ条件で第２回目の衝撃を金属板５を介して
アルミニウムのホットドロス４に４秒間加える。前回と
同様に空気は容器１の外に追い出されてホットドロス上
の金属板５と衝撃体６との間に間隔Ｂが発生する。この
衝撃体６を図４から図５のように金属板５の上に降下さ
せてセットし、２回目の衝撃終了時より１５秒後に前回
と同じ条件で第３回目の衝撃を金属板５を介してアルミ
ニウムのホットドロス４に４秒間加える。ホットドロス
上の金属板５に衝撃体６で衝撃を加えてもドロスがほと
んど下がらなくなるまで繰り返し所定時間の間隔をおい
て衝撃体６で所定時間の衝撃を加えた後に図６に図示し
たように容器１の多孔底板３を円筒体２から取外し、ケ
ーキ状に固形化したドロス（以下ドロスケーキと称す）
に上から衝撃体６で衝撃を加えて容器１の円筒体２から
ドロスケーキ７を取出す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the aluminum hot dross treating method of the present invention will be described with reference to the drawings.
A 100 kg aluminum hot dross scraped from an aluminum melting furnace is placed in a container 1 composed of a heat-resistant steel cylindrical body 2 and a heat-resistant steel porous bottom plate 3. The cylindrical body 2 of this container 1 has an inner diameter of 400 mm and a thickness of 5.0 mm. The perforated bottom plate 3 has a thickness of 6 mm provided with a large number of holes having a diameter of 8 mm, and is the container 1 in which the perforated bottom plate 3 is detachably provided in the lower portion of the cylindrical body 2. Next, a metal plate 5 of heat-resistant steel having a diameter of 399 mm and a thickness of 20 mm is placed on the aluminum hot dross 4 placed in the container 1, and the impact body 6 is set on the metal plate 5. 400 per minute with this impact body 6
A shock of 80 horsepower (PS) is applied to the aluminum hot dross 4 through the metal plate 5 for 4 seconds. Due to this impact force, the air mixed inside the aluminum hot dross moves to the outside of the container 1 in search of an escape place, and the dross 4
Since the metal plate 5 is present on the upper part, the air is hardly expelled from the upper part, and the air moves downward toward the holes of the perforated bottom plate 3, and the air is expelled to the outside from the holes. Further, the impact force causes the molten aluminium mixed with the hot dross to be discharged together with air from the furnace and recovered. As shown in FIG. 2, the height of the hot dross 4 is lowered by about 100 mm due to the first impact, and the volume is reduced, and the space A is provided between the metal plate 5 and the impact body 6 on the hot dross. Occur. The impact body 6 is dropped onto the metal plate 5 as shown in FIGS. 2 to 3 and hits, and 15 seconds after the end of the previous impact, the second impact is passed through the metal plate 5 under the same conditions as the last time. Add to aluminum hot dross 4 for 4 seconds. Similar to the previous time, the air is expelled to the outside of the container 1 and a space B is generated between the metal plate 5 on the hot dross and the impact body 6. As shown in FIGS. 4 to 5, the impact body 6 is dropped onto the metal plate 5 and set, and 15 seconds after the end of the second impact, the third impact is applied to the metal plate 5 under the same conditions as the previous time. Through aluminum hot dross 4 for 4 seconds. As shown in FIG. 6, after the impact body 6 repeatedly impacts the metal plate 5 on the hot dross with the impact body 6 until the dross does not substantially drop, the impact body 6 repeatedly applies the impact for a predetermined time. The porous bottom plate 3 of the container 1 is removed from the cylindrical body 2 and solidified into a cake-like dross (hereinafter referred to as dross cake).
Then, a shock is applied from above to the dross cake 7 from the cylindrical body 2 of the container 1.
【０００８】なお、この実施例では容器１の多孔底板３
の孔は直径８ｍｍのものについて説明したが、多孔底板
の孔は直径７ｍｍから２０ｍｍ位がテストした結果とし
てよい。同様に実施例では毎分４００回で８０馬力の衝
撃や衝撃を加える時間４秒休む時間１５秒について説明
したが、容器の大きさや容器に入れるホットドロスの量
などによりこれらの数値は異なり、テストした結果とし
て毎分２００回から６００回の衝撃を加える時間は３秒
から６秒位がよく、休む時間は１０秒から２０秒位がよ
い。更に衝撃を加えた後に休むという工程は３回から６
回位がテストした結果としてよい。そしてドロスケーキ
の容積は最初のホットドロスの容積の１／２から１／４
位になる。In this embodiment, the porous bottom plate 3 of the container 1
Although the hole having a diameter of 8 mm has been described, the hole having a diameter of 7 mm to 20 mm may be tested as the hole of the porous bottom plate. Similarly, in the embodiment, an impact of 80 hp at 400 times per minute and a time of applying a shock of 4 seconds and a rest time of 15 seconds have been described. However, these values are different depending on the size of the container, the amount of hot dross put in the container, etc. As a result, it is preferable that the time of applying an impact of 200 to 600 times per minute is about 3 to 6 seconds, and the rest time is about 10 to 20 seconds. The process of resting after further impact is from 3 times to 6
Good as a result of the probation. And the volume of the dross cake is 1/2 to 1/4 of the volume of the first hot dross.
Rank
【０００９】[0009]
【発明の効果】この発明は多孔底板を設けた容器にアル
ミニウムのホットドロスを入れてこの容器に入れたアル
ミニウムのホットドロスの上に金属板を載置してから、
この金属板の上から衝撃を加えては休むという工程を繰
返す方法であるから、アルミニウムのホットドロスの中
に存在する空気をドロスより追出すことができるし、ド
ロス中の金属アルミニウムを容器の多孔底板より回収す
ることができる。そしてドロスより空気を追出したこと
によりドロス中のアルミニウムが空気中の酸素、窒素と
酸化反応と窒化反応することを防止することができると
ともにこの酸化反応と窒化反応による発熱することを防
止することができて、金属アルミニウムが消失すること
を防止することができる。更に発熱することが防止でき
るので爆発的高温発生による環境破壊を防止することが
できるし、固形化された固形物の中に酸化アルミニウム
（Ａｌ2 Ｏ3 ）や窒化アルミニウム（ＡｌＮ）の発生を
少なくすることができるとともに固形化の際にも粉塵を
発生しないという効果がある。According to the present invention, aluminum hot dross is placed in a container provided with a perforated bottom plate, and a metal plate is placed on the aluminum hot dross placed in the container.
This is a method of repeating the process of applying an impact from above the metal plate and resting, so that the air present in the aluminum hot dross can be expelled from the dross, and the metal aluminum in the dross can be removed from the porosity of the container. It can be recovered from the bottom plate. Then, by expelling the air from the dross, it is possible to prevent aluminum in the dross from oxidizing and nitriding with oxygen and nitrogen in the air and preventing heat generation due to the oxidizing and nitriding reactions. It is possible to prevent the metal aluminum from disappearing. Furthermore, since it is possible to prevent heat generation, it is possible to prevent environmental destruction due to explosive high temperature generation, and to reduce generation of aluminum oxide (Al 2 O 3 ) and aluminum nitride (AlN) in the solidified solid matter. It is possible to do so, and there is an effect that dust is not generated even when it is solidified.
【図１】本発明の第１回目のセット時の断面図である。FIG. 1 is a cross-sectional view of a first set of the present invention.
【図２】本発明の第１回目の衝撃後の断面図である。FIG. 2 is a cross-sectional view after the first impact of the present invention.
【図３】本発明の第２回目のセット時の断面図である。FIG. 3 is a cross-sectional view of the second set time of the present invention.
【図４】本発明の第２回目の衝撃後の断面図である。FIG. 4 is a cross-sectional view after the second impact of the present invention.
【図５】本発明の第３回目のセット時の断面図である。FIG. 5 is a cross-sectional view of the third set time of the present invention.
【図６】本発明の取外し時の断面図である。FIG. 6 is a cross-sectional view of the present invention when detached.
１ 容器 ２ 円筒体 ３ 多孔底板 ４ ホットドロス ５ 金属板 ６ 衝撃体 ７ ドロスケーキ 1 Container 2 Cylindrical Body 3 Perforated Bottom Plate 4 Hot Dross 5 Metal Plate 6 Impact Body 7 Dross Cake
Claims (2)
の孔を有する多孔底板を設けた容器に溶解炉から取出さ
れたアルミニウムのホットドロスを入れ、該容器に入れ
たアルミニウムのホットドロスの上に金属板を載置して
から、該金属板に上から衝撃を３秒から６秒加えた後に
１０秒から２０秒休むという工程を３回から６回繰返す
ことを特徴とするアルミニウムのホットドロスの処理方
法。1. A diameter of 7 mm to 20 mm at the bottom of the cylindrical body
The hot dross of aluminum taken out from the melting furnace is put in a container provided with a perforated bottom plate having holes, the metal plate is placed on the hot dross of aluminum put in the container, and then the metal plate is placed on the metal plate. The method for treating aluminum hot dross, characterized in that the step of applying an impact for 3 to 6 seconds and then resting for 10 to 20 seconds is repeated 3 to 6 times.
けたことを特徴とする請求項１記載のアルミニウムのホ
ットドロスの処理方法。2. The method for treating aluminum hot dross according to claim 1, wherein the porous bottom plate of the cylindrical container is detachably provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22093792A JP2683476B2 (en) | 1992-07-29 | 1992-07-29 | How to treat aluminum hot dross |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22093792A JP2683476B2 (en) | 1992-07-29 | 1992-07-29 | How to treat aluminum hot dross |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0649550A true JPH0649550A (en) | 1994-02-22 |
| JP2683476B2 JP2683476B2 (en) | 1997-11-26 |
Family
ID=16758899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22093792A Expired - Lifetime JP2683476B2 (en) | 1992-07-29 | 1992-07-29 | How to treat aluminum hot dross |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2683476B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06192755A (en) * | 1992-12-24 | 1994-07-12 | Yamaichi Syst Purodeyuusu:Kk | Method for solidifying hot dross of aluminum |
| JPH08157979A (en) * | 1994-12-06 | 1996-06-18 | Shinko Flex:Kk | Treatment of magnesium molten slag and device therefor |
| US6063330A (en) * | 1996-01-17 | 2000-05-16 | J. Mcintyre Machinery Limited | Press head and dross pot for dross processing system |
| US20180223499A1 (en) * | 2015-09-09 | 2018-08-09 | Young Gil Kim | Excavator having rotatable arm |
-
1992
- 1992-07-29 JP JP22093792A patent/JP2683476B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06192755A (en) * | 1992-12-24 | 1994-07-12 | Yamaichi Syst Purodeyuusu:Kk | Method for solidifying hot dross of aluminum |
| JPH08157979A (en) * | 1994-12-06 | 1996-06-18 | Shinko Flex:Kk | Treatment of magnesium molten slag and device therefor |
| US6063330A (en) * | 1996-01-17 | 2000-05-16 | J. Mcintyre Machinery Limited | Press head and dross pot for dross processing system |
| US20180223499A1 (en) * | 2015-09-09 | 2018-08-09 | Young Gil Kim | Excavator having rotatable arm |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2683476B2 (en) | 1997-11-26 |
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