JP3448728B2 - Metal recovery method and recovery device - Google Patents
Metal recovery method and recovery deviceInfo
- Publication number
- JP3448728B2 JP3448728B2 JP12949897A JP12949897A JP3448728B2 JP 3448728 B2 JP3448728 B2 JP 3448728B2 JP 12949897 A JP12949897 A JP 12949897A JP 12949897 A JP12949897 A JP 12949897A JP 3448728 B2 JP3448728 B2 JP 3448728B2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- water
- slag
- gutter
- molten product
- 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.)
- Expired - Fee Related
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
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Furnace Details (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、金属及びスラグと
を含む溶融生成物から金属を回収する回収方法及び回収
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recovery method and recovery apparatus for recovering metal from a molten product containing metal and slag.
【０００２】[0002]
【従来の技術】一般に、製鉄或いは精練を行った場合、
鉄等の金属と、スラグとを含む溶融生成物が不可避的に
発生する。このような溶融生成物から、金属だけを回収
し、再利用しようとする試みが行われている。金属を回
収する場合、溶融生成物から金属とスラグとを分離する
技術が必要であり、且つ、回収された金属は、再利用に
適した形状を備えていることが望ましい。2. Description of the Related Art Generally, when ironmaking or scouring is performed,
A molten product containing a metal such as iron and slag is inevitably generated. Attempts have been made to recover and reuse only metals from such molten products. When recovering the metal, a technique for separating the metal and the slag from the molten product is required, and it is desirable that the recovered metal has a shape suitable for reuse.
【０００３】本発明者等は、先に、これらのことを考慮
して、溶融生成物から鉄等の金属を分離して回収するた
めの回収装置を特願平８−３３０，５０５号明細書（以
下、引用例１と呼ぶ）において提案した。In consideration of the above, the present inventors have previously proposed a recovery device for separating and recovering a metal such as iron from a molten product in Japanese Patent Application No. 8-330,505. (Hereinafter, referred to as Cited Example 1).
【０００４】しかしながら、上記した回収装置では、溶
融生成物を一旦に冷却水槽内で冷却した後、搬出機によ
り、外部に搬出して、磁選等により、金属とスラグとを
分離している。このようにして、分離、回収された金属
を精練等において再利用するためには、再度、回収され
た金属を再利用に適した形状に、再処理する必要があ
り、再利用の際に、手間が掛かる。However, in the above-mentioned recovery apparatus, after the molten product is once cooled in the cooling water tank, it is carried out to the outside by the carry-out machine and the metal and the slag are separated by magnetic separation or the like. In this way, in order to reuse the separated and recovered metal in the scouring and the like, it is necessary to reprocess the recovered metal into a shape suitable for reuse, and at the time of reuse, Take the trouble.
【０００５】更に、再利用を考慮した場合、金属は粒状
化した形状で回収されていることが好ましい。しかし、
上記した引用例１は、金属を粒状化した状態で回収する
ことについて、考慮していない。Further, in consideration of reuse, it is preferable that the metal is recovered in a granular form. But,
The above-mentioned reference 1 does not consider recovery of the metal in a granular state.
【０００６】[0006]
【発明が解決しようとする課題】一方、溶融金属を粒状
化する従来の技術として、溶融金属を単に水中に滴下す
る方法、溶融金属に高圧水又は高圧空気を吹き付けるこ
とにより、粒状化する方法等がある。しかしながら、こ
れらの従来の技術は、金属とスラグとを分離するために
は、使用されていない。更に、これらの方法を数パーセ
ントの炭素を含有する溶融金属に適用した場合、好まし
いサイズ及び形状の金属は得られず、突起物のある牡蠣
殻状の金属しか得られていないのが実情である。On the other hand, as a conventional technique for granulating molten metal, a method of simply dropping molten metal into water, a method of granulating by blowing high-pressure water or high-pressure air to the molten metal, etc. There is. However, these conventional techniques have not been used to separate metal and slag. Further, when these methods are applied to a molten metal containing a few percent of carbon, a metal having a preferable size and shape is not obtained, and only an oyster shell-like metal having a protrusion is obtained. .
【０００７】また、特公昭５６−１８６４７号公報（以
下、引用例２と呼ぶ）には、フェロニッケルの粒状金属
の製造方法が記載されている。しかしながら、引用例２
も、溶融金属を粒状化することのみを企図しているた
め、金属とスラグとを分離する方法については、何等、
開示していない。Further , Japanese Patent Publication No. 56-18647 ( hereinafter referred to as Reference Example 2) describes a method for producing granular metal of ferronickel. However, the reference example 2
However, since it is only intended to granulate the molten metal, what about the method for separating the metal and the slag,
Not disclosed.
【０００８】更に、引用例２では、０．１％以上の炭素
を含有するフェロニッケルに脱酸剤を使用することによ
り、形状の均一な金属が得られることが指摘されてい
る。このように、脱酸剤を添加する方法では、溶融炉内
で直接添加することは、困難であるため、溶融炉からト
リベ（レードル）等の中間容器に、一旦、溶融金属を取
り出し、取り出された溶融金属に対して脱酸剤の添加し
た後、水砕処理が行われている。したがって、引用例２
の方法においても、粒状金属を得るためには、脱酸剤の
添加等の前処理が必要である。Further, in Reference Example 2, it is pointed out that a metal having a uniform shape can be obtained by using a deoxidizer for ferronickel containing 0.1% or more of carbon. As described above, in the method of adding the deoxidizer, it is difficult to add the deoxidizer directly in the melting furnace. Therefore, the molten metal is once taken out from the melting furnace into an intermediate container such as a tribe (ladle) and taken out. After adding the deoxidizing agent to the molten metal, water granulation treatment is performed. Therefore, the reference example 2
Also in the method of (1), pretreatment such as addition of a deoxidizer is necessary to obtain the granular metal.
【０００９】本発明の目的は、金属及びスラグを含む溶
融生成物から、金属とスラグとを分離した状態で回収で
きる回収方法が得られる。An object of the present invention is to provide a recovery method capable of recovering a metal and a slag in a separated state from a molten product containing the metal and the slag.
【００１０】本発明の他の目的は、溶融金属に対して、
脱酸剤の添加等の前処理を施すことなく、均一なサイズ
を有する粒状金属をスラグと分離、回収出来る回収方法
を提供することである。Another object of the present invention is for molten metal,
It is an object of the present invention to provide a recovery method capable of separating and recovering granular metal having a uniform size from slag without performing pretreatment such as addition of a deoxidizer.
【００１１】本発明の更に他の目的は、金属及びスラグ
を含む溶融生成物から、粒状物の形で金属をスラグから
分級し、スラグの混入量を最小にした状態で、粒状化金
属を回収できる回収装置を提供することである。Still another object of the present invention is to recover the granulated metal from the molten product containing the metal and the slag, while classifying the metal in the form of granules from the slag and minimizing the mixing amount of the slag. It is to provide a recovery device that can do so.
【００１２】[0012]
【課題を解決するための手段】本発明の一実施の形態に
よれば、金属及びスラグとを含む溶融生成物から、金属
を回収する方法において、前記溶融生成物を傾斜した水
樋の上部の流水中に投入し、前記溶融生成物を凝固、転
動させ、前記金属及び前記スラグとを分離出来る状態
で、前記水樋の下部から取り出す金属の回収方法が得ら
れる。According to one embodiment of the present invention, in a method for recovering metal from a molten product containing metal and slag, the molten product is provided on an upper part of an inclined water gutter. It is possible to obtain a method for recovering a metal that is taken out from the lower part of the water gutter in a state in which the molten product is solidified and tumbled by being poured into running water to separate the metal and the slag.
【００１３】本発明の他の実施の形態によれば、金属及
びスラグを含む溶融生成物から前記金属を回収する回収
装置において、予め定められた角度で配置された所定長
の水樋と、前記水樋の上端近傍におかれた溶融生成物を
前記水樋に投入するための手段と、前記水樋の上端部か
ら水を流す手段と、前記水樋の下端部に置かれ、前記金
属と前記スラグとを分離して回収する回収手段とを有す
る回収装置が得られる。According to another embodiment of the present invention, in a recovery device for recovering the metal from a molten product containing metal and slag, a water gutter having a predetermined length and arranged at a predetermined angle, Means for charging the molten product placed in the vicinity of the upper end of the water gutter into the water gutter, means for flowing water from the upper end of the water gutter, placed at the lower end of the water gutter, and the metal A recovery device having a recovery means for separating and recovering the slag is obtained.
【００１４】上記した回収方法及び回収装置によって回
収された金属及びスラグは、互いに異なるサイズを持つ
粒状物となるから、これを分級することにより一定形状
の金属が得られることから精練等においては、回収され
た金属を再処理することなく、そのまま使用出来る。The metal and slag recovered by the recovery method and the recovery apparatus described above become granular materials having different sizes from each other. Therefore, by classifying the particles, a metal having a constant shape can be obtained. It can be used as it is without reprocessing the recovered metal.
【００１５】[0015]
【発明の実施の形態】以下、図面を参照して、本発明の
一実施の形態に係る回収装置を説明する。BEST MODE FOR CARRYING OUT THE INVENTION A recovery device according to an embodiment of the present invention will be described below with reference to the drawings.
【００１６】図１を参照すると、本発明の一実施の形態
に係る回収装置は、金属及びスラグを含む溶融生成物２
を取り出す溶融炉１を備えている。この溶融炉１として
は、特願平８−３３０，５０５号明細書で述べられたよ
うなロータリキルンを用いた溶融炉１を使用出来るが、
これに限定されないことは言うまでも無い。また、図示
された溶融生成物２は、回収されるべき鉄及びその合金
等を含む金属と、スラグとにより構成されているものと
する。Referring to FIG. 1, a recovery apparatus according to an embodiment of the present invention is a molten product 2 containing metal and slag.
A melting furnace 1 is provided for taking out. As the melting furnace 1, a melting furnace 1 using a rotary kiln as described in Japanese Patent Application No. 8-330,505 can be used.
It goes without saying that it is not limited to this. Further, the illustrated melted product 2 is assumed to be composed of a metal containing iron and its alloy to be recovered, and slag.
【００１７】図示された例では、溶融生成物２は、水樋
３に投入される。水樋３は、約１０ｍの長さを有し、且
つ、図２に示すように、Ｕ字型の断面形状を備えてい
る。水樋３は、例えば、厚さ５ｍｍのステンレススティ
ールによって形成されており、１５５ｍｍの幅、及び、
直径約１６５ｍｍの半円形形状の底部を有している。ま
た、水樋３は、図１に示されているように、傾斜して設
置されており、傾斜した水樋３の上端部から下端部に対
して水８が流されている。In the illustrated example, the molten product 2 is thrown into a water gutter 3. The water gutter 3 has a length of about 10 m and, as shown in FIG. 2, has a U-shaped cross section. The water gutter 3 is made of, for example, stainless steel having a thickness of 5 mm, and has a width of 155 mm and
It has a semi-circular bottom with a diameter of about 165 mm. As shown in FIG. 1, the water gutter 3 is installed so as to be inclined, and water 8 flows from the upper end portion to the lower end portion of the inclined water gutter 3.
【００１８】この構造を備えた回収装置では、水樋３の
上端部に近い上部に、溶融炉１から連続的に投入された
溶融生成物２は、流水と共に水樋３の下端部へ送られ
る。この場合、溶融生成物２は、水樋３の中で、凝固、
転動しながら流水と共に、下流方向に流れていき、水樋
３の下端部から粒状物の形で水槽５に、水流３と共に排
出される。後述するように、金属はこの凝固、転動の相
互作用によって、粒状物の形で回収され、その大きさ、
形状、及び、密度が決定される。一方、スラグは水砕さ
れ砂状の微粒となる。In the recovery device having this structure, the molten product 2 continuously charged from the melting furnace 1 to the upper part near the upper end of the water gutter 3 is sent to the lower end of the water gutter 3 together with running water. . In this case, the molten product 2 solidifies in the water gutter 3
While rolling, it flows in the downstream direction together with the running water, and is discharged from the lower end of the water gutter 3 in the form of particles into the water tank 5 together with the water flow 3. As will be described later, the metal is recovered in the form of particles by the interaction of solidification and rolling, and its size,
The shape and density are determined. On the other hand, the slag is water granulated into sandy fine particles.
【００１９】水槽５内の水はポンプ６によって循環使用
される一方、熱交換器７によって所定の温度に調整さ
れ、流水として水樋３の上端部に送られる。したがっ
て、この回収装置では、流水も循環使用されている。The water in the water tank 5 is circulated and used by the pump 6, while being adjusted to a predetermined temperature by the heat exchanger 7, and sent to the upper end of the water gutter 3 as running water. Therefore, running water is also circulated in this recovery device.
【００２０】また、水槽５内に、粒状物の形で堆積され
る金属及び水砕されたスラグは、上記した相互作用に必
要な条件を後述するように設定することにより、互いに
大きさの異なる粒状物として、水樋３から排出させるこ
とができる。このように、互いに大きさ、即ち、サイズ
の異なる粒状金属及び水砕スラグを含む粒状物は、搬出
装置９により水槽５から、水槽５の外側に設けられた分
離、分級噐１０に搬出される。Further, the metal and water-slag slag deposited in the form of particles in the water tank 5 have mutually different sizes by setting the conditions necessary for the above-mentioned interaction as described later. As a granular material, it can be discharged from the water gutter 3. In this way, the granular material including the granular metal and the granulated slag having different sizes, that is, different sizes, is carried out of the water tank 5 by the carrying-out device 9 to the separation / classification unit 10 provided outside the water tank 5. .
【００２１】上記したように、粒状金属及び水砕スラグ
とは互いに異なるサイズを有しているから、分離、分級
噐１０を用いて粒状物のサイズを区分することにより、
水砕スラグ１１と粒状金属１２とに分離して回収するこ
とができる。尚、回収される金属が磁気分離可能な金属
であれば、磁選の方法を使用しても分離、回収すること
ができる。As described above, since the granular metal and the granulated slag have different sizes from each other, the size of the granular material is divided by using the separating and classifying machine 10,
The granulated slag 11 and the granular metal 12 can be separated and recovered. If the metal to be recovered is a metal that can be magnetically separated, it can be separated and recovered by using a magnetic separation method.
【００２２】ここで、水樋３中における溶融生成物の凝
固、転動の相互作用について検討する。本発明者等の研
究によれば、水樋３内における溶融生成物の凝固の速度
に対しては、溶融生成物２の投入温度（実質的には、投
入温度と、回収されるべき金属の凝固点との差）、溶融
生成物の投入量と流水の水量の比、及び、流水の水温と
が関係しており、溶融生成物の転動には、水樋３の傾斜
角、水樋３の長さ、及び、水樋３の断面形状が関係して
いることが判明した。これらの条件を適切に設定するこ
とにより、突起を持たず、しかも、高密度及び再処理に
適したサイズの粒状金属が水樋３から排出され、且つ、
スラグを粒状金属より細かい粒子の形で水樋３から排出
させることができた。Here, the interaction of solidification and rolling of the molten product in the water gutter 3 will be examined. According to the research conducted by the present inventors, with respect to the rate of solidification of the molten product in the water gutter 3, the temperature at which the molten product 2 is charged (substantially the temperature at which the molten product is charged and the temperature of the metal to be recovered) are determined. The difference between the freezing point ), the ratio of the amount of the melted product to the amount of the flowing water, and the water temperature of the flowing water are related to the rolling of the melted product. It was found that the length of No. 3 and the cross-sectional shape of the water gutter 3 were related. By setting these conditions appropriately, a granular metal having no protrusions and having a high density and a size suitable for reprocessing is discharged from the water gutter 3, and
The slag could be discharged from the water gutter 3 in the form of finer particles than the granular metal.
【００２３】まず、溶融生成物２の投入温度、水温、及
び、水量／投入量等が、凝固速度に与える影響について
説明する。一般的に、水中での凝固が速すぎると、転動
による凝固金属の表面に丸みをつける効果が減少し、凝
固が遅いと、水樋３に対する溶融生成物の付着等の問題
が生じる。First, the effect of the temperature of the molten product 2, the temperature of the water, the amount of water / the amount of water supplied, and the like on the solidification rate will be described. Generally, if the solidification in water is too fast, the effect of rounding the surface of the solidified metal due to rolling decreases, and if the solidification is slow, problems such as adhesion of the molten product to the water gutter 3 occur.
【００２４】更に、回収された金属のサイズは、投入温
度と、当該金属の凝固点の差が少ないほど大きくなる傾
向が見られたが、その影響は小さいことが確かめられて
いる。実験によれば、回収される金属の投入温度と凝固
点との差は、５０〜７０℃の範囲にあればよく、好まし
くは６０℃前後であることが分かった。Furthermore, the size of the recovered metal tended to increase as the difference between the charging temperature and the freezing point of the metal decreased, but the effect was confirmed to be small. Experiments have shown that the input temperature and solidification of the recovered metal
It was found that the difference from the point should be in the range of 50 to 70 ° C, preferably around 60 ° C.
【００２５】また、流水の水温は、粒状金属のサイズ、
形状、嵩比重に大きく影響を与えることが確かめられて
いる。溶融生成物２が水樋３の流水中に投入されると、
溶融生成物２中の溶融金属のまわりに蒸気膜が形成さ
れ、この蒸気膜によって冷却が阻害される。したがっ
て、流水の水温が低いと、形成される蒸気膜が薄く、冷
却が速いためサイズは大きくなるが、逆に、冷却された
金属の内部には空洞が多く、嵩比重が小さい粒状金属し
か得られない。実験によれば、水流の水温は６０℃前後
が望ましいことが判明した。尚、粒状金属のサイズが比
較的小さくてもよい場合には、より高い水温の水を流し
ても良い。The water temperature of the running water depends on the size of the granular metal,
It has been confirmed that the shape and bulk specific gravity are greatly affected. When the molten product 2 is thrown into the running water of the water gutter 3,
A vapor film is formed around the molten metal in the molten product 2, and the vapor film hinders cooling. Therefore, if the water temperature of running water is low, the vapor film that is formed is thin and the size is large because cooling is fast, but conversely, there are many cavities inside the cooled metal, and only granular metal with a low bulk specific gravity can be obtained. I can't. According to the experiment, it was found that the water temperature of the water stream is preferably around 60 ° C. In addition, when the size of the granular metal may be relatively small, water having a higher water temperature may be flown.
【００２６】次に、水樋３の水量と投入溶融生成物量の
関係を検討してみると、水量に比較して、投入溶融生成
物の量が多くなるにしたがって、回収される粒状金属の
サイズは大きくなる。しかしながら、水量１ｍ３に対し
て、投入溶融生成物の量が８０ｋｇを越えると、粒状金
属のサイズに対する影響は少なくなって、逆に、水樋３
に対する溶融生成物の付着の問題が生じる。これは、水
量に比較して、投入溶融生成物の量が多くなると、凝固
速度が遅くなるためであると、推測される。Next, considering the relationship between the amount of water in the water gutter 3 and the amount of the molten product to be charged, the size of the granular metal recovered as the amount of the molten product to be charged increases as compared with the amount of water. Grows. However, when the amount of the molten product added exceeds 80 kg per 1 m 3 of water, the influence on the size of the granular metal is reduced, and conversely, the water gutter 3
The problem of adhesion of the molten product to It is presumed that this is because the solidification rate becomes slower when the amount of the molten product to be added is larger than the amount of water.
【００２７】他方、溶融生成物の転動と、水樋３の傾斜
角、形状、及び、長さとの関係を検討してみると、水樋
３の傾斜角は小さい方が粒状金属のサイズは大きくなる
が、２／１０の傾斜角より小さい角度では、粒状金属の
サイズは大きくても、水樋３内における溶融生成物の滑
り、及び、転動が不十分なため、回収された金属の粒子
の形状等に問題が生じることも分かった。このため、水
樋３の傾斜角は３／１０（１６．７°）以上であること
が望ましい。On the other hand, considering the relationship between the rolling of the molten product and the inclination angle, shape, and length of the water gutter 3, the smaller the inclination angle of the water gutter 3, the smaller the size of the granular metal. When the tilt angle is smaller than 2/10, even if the size of the granular metal is large, slippage and rolling of the molten product in the water gutter 3 are insufficient, so that the amount of the recovered metal It was also found that there is a problem with the shape of the particles. Therefore, it is desirable that the inclination angle of the water gutter 3 be 3/10 (16.7 °) or more.
【００２８】また、水樋３は、約１０ｍ程度の長さを有
しているのが、経済性の面で有利である。水樋３の長さ
が１０ｍを越えても、回収された粒状金属の物性は、１
０ｍの水樋３を用いた場合と、実質的に同等であった。
逆に、１０ｍより短い水樋を使用した場合、水樋内で凝
固が完了せず、水槽５の中で凝固し、粒状金属同士が互
いに溶着した状態になる現象が見受けられ、回収された
金属を再利用する際には、再処理が必要な場合もあっ
た。The water gutter 3 has a length of about 10 m, which is advantageous from the economical point of view. Even if the length of the water gutter 3 exceeds 10 m, the physical properties of the recovered granular metal are 1
It was substantially equivalent to the case of using 0 m of water gutter 3.
On the contrary, when a water gutter shorter than 10 m is used, solidification is not completed in the water gutter, solidification occurs in the water tank 5, and a phenomenon in which granular metals are welded to each other is observed, and the recovered metal is recovered. When reusing, there were cases where reprocessing was necessary.
【００２９】図３を参照すると、水樋３の変形例が示さ
れている。図示された水樋は、断面形状において、波型
の底部を有しており、粒状物のサイズが細かい場合に適
している。Referring to FIG. 3, a modification of the water gutter 3 is shown. The illustrated water gutter has a corrugated bottom in cross-sectional shape, and is suitable when the size of the granular material is small.
【００３０】図４には、水樋３の他の変形例が示されて
おり、ここでは、断面形状において、Ｗ字型を有する底
部を備えている。このＷ字型の水樋も、粒状物のサイズ
の細かい場合に適している。図３及び図４のいずれにお
いても、溶融生成物の溶着が水樋の底部に生じ易いた
め、図２に示すＵ字型の底部を持つ水樋が望ましい。FIG. 4 shows another modification of the water gutter 3, which is provided with a bottom having a W-shaped cross section. This W-shaped water gutter is also suitable when the size of the granular material is small. In both FIG. 3 and FIG. 4, the welded product having the U-shaped bottom shown in FIG. 2 is preferable because the fusion product is easily welded to the bottom of the water gutter.
【００３１】[0031]
【実施例】図１に示された回収装置の具体例を説明す
る。粒状金属のサイズ、形状、嵩比重に及ぼす水温、溶
融金属の温度、水樋の傾斜、形状、溶融生成物の投入量
と水量の比の各種の要因のうち、水樋の傾斜、水樋の形
状、溶融生成物の投入量と水量の比を一定にして、水温
及び溶融生成物の温度と、再利用を考慮した１０ｍｍサ
イズ以上の大きさを有する粒状金属の分配率との関係が
図５及び図６に示されている。EXAMPLE A specific example of the recovery device shown in FIG. 1 will be described. Among the various factors such as the size, shape and bulk temperature of the granular metal, the temperature of the molten metal, the temperature of the molten metal, the inclination of the water gutter, the shape, the ratio of the amount of the molten product input and the amount of water, the inclination of the water gutter FIG. 5 shows the relationship between the water temperature and the temperature of the molten product and the distribution ratio of the granular metal having a size of 10 mm or more in consideration of the reuse, with the shape, the ratio of the amount of the molten product input and the amount of water kept constant. And shown in FIG.
【００３２】まず、図５では、断面Ｕ字型の底部を備
え、４．５／１０（２７°）の傾斜角で配置された水樋
に対して、８０ｋｇ／ｍ３（投入金属量８０ｋｇ／ｈ、
水量１ｍ３／ｈ）の投入量で溶融生成物を投入し、１１
８０℃の凝固点を有する銑鉄を回収する場合が示されて
いる。図５において、実線は、溶融生成物を１２００℃
で投入した場合であり、他方、破線は１２５０℃の温度
の溶融生成物を投入した場合を示している。水温が高く
なるにしたがって＋１０ｍｍのサイズの粒状金属の分配
率は低下し、また、同じ水温では、溶融生成物の温度が
高いほど分配率は低下することが分かる。また、実線か
らも明らかな通り、水温４０℃で且つ溶融生成物の温度
が１２００℃の場合には、＋１０ｍｍのサイズを有する
粒状金属が９０％以上になることが分かる。First, in FIG. 5, 80 kg / m 3 (80 kg / m 3 of metal input) is provided for a water gutter provided with a bottom having a U-shaped cross section and arranged at an inclination angle of 4.5 / 10 (27 °). h,
The molten product was added at an input amount of water of 1 m 3 / h), and 11
The case of recovering pig iron having a freezing point of 80 ° C. is shown. In FIG. 5, the solid line indicates the molten product at 1200 ° C.
In the meantime, the broken line shows the case where the molten product at a temperature of 1250 ° C. was charged. It can be seen that the distribution ratio of the granular metal having a size of +10 mm decreases as the water temperature increases, and that at the same water temperature, the distribution ratio decreases as the temperature of the molten product increases. Further, as is clear from the solid line, when the water temperature is 40 ° C. and the temperature of the molten product is 1200 ° C., 90% or more of the granular metal has a size of +10 mm.
【００３３】図６では、水流の水温と、＋１０ｍｍのサ
イズを有する粒状金属の嵩比重（ｋｇ／ｌ）との関係が
示されている。ここでは、図５の実線で示した場合と同
様に、１２００℃の溶融生成物を図５で説明した水樋に
投入した場合における測定結果が示されている。図から
も明らかな通り、水温が高くなると、嵩比重は大きくな
り、低くなると、嵩比重も低くなる。FIG. 6 shows the relationship between the water temperature of the water stream and the bulk specific gravity (kg / l) of the granular metal having a size of +10 mm. Here, similar to the case shown by the solid line in FIG. 5, the measurement result when the melted product at 1200 ° C. is put into the water gutter described in FIG. 5 is shown. As is clear from the figure, the bulk specific gravity increases as the water temperature increases, and the bulk specific gravity decreases as the water temperature decreases.
【００３４】ここで、粒状金属と水砕スラグとのサイズ
による分離を考慮すると、回収する粒状金属のサイズを
＋１０ｍｍとし、回収率（＋１０ｍｍサイズの粒状金属
の分配率）を７０％以上、粒状金属の原料としての物性
から嵩比重を２．５ｋｇ／ｌ以上とする。これらの回収
条件を満足させるためには、図５及び図６から、約６０
℃の水温の水流中に、１２５０℃以下の溶融生成物を投
入すれば良いことが分かる。尚、回収される金属として
は、４％の炭素を含有した凝固点１１８０℃の銑鉄であ
り、このため、溶融生成物の温度と、回収される金属の
凝固点の差は約７０℃である。このようにして回収され
た粒状金属は、突起のない形状を持ち、且つ、均一なサ
イズで、しかも、大きな嵩比重を備えていることが確認
された。このため、回収された粒状金属は、何等、再処
理を要することなく、精練等に再利用することができ
た。Here, considering the separation of the granular metal and the granulated slag depending on the size, the size of the granular metal to be recovered is +10 mm, the recovery rate (distribution rate of the granular metal of +10 mm size) is 70% or more, and the granular metal is The bulk specific gravity is set to 2.5 kg / l or more because of the physical properties as a raw material. In order to satisfy these recovery conditions, from FIG. 5 and FIG.
It is understood that the molten product at 1250 ° C. or lower may be added to the water stream having a water temperature of 0 ° C. The recovered metal is pig iron containing 4% of carbon and having a freezing point of 1180 ° C. Therefore, the difference between the temperature of the molten product and the freezing point of the recovered metal is about 70 ° C. It was confirmed that the granular metal thus recovered had a shape without protrusions, had a uniform size, and had a large bulk specific gravity. Therefore, the recovered granular metal could be reused for scouring without any reprocessing.
【００３５】[0035]
【発明の効果】以上述べたように、本発明によれば、回
収すべき金属とスラグとを異なるサイズの粒状物とし
て、個々に分離して回収でき、且つ、回収率、回収され
た粒状金属のサイズ及び嵩比重も高いから、再処理等を
必要とすることなく、再利用することができる。As described above, according to the present invention, the metal to be recovered and the slag can be individually separated and recovered as granular materials having different sizes, and the recovery rate and the recovered granular metal can be achieved. Since its size and bulk specific gravity are high, it can be reused without requiring reprocessing or the like.
【図１】本発明の一実施の形態に係る回収装置の構成を
説明する概略図である。FIG. 1 is a schematic diagram illustrating a configuration of a recovery device according to an embodiment of the present invention.
【図２】図１に示された回収装置に使用される水樋の断
面形状を説明するための図である。FIG. 2 is a view for explaining a cross-sectional shape of a water gutter used in the recovery device shown in FIG.
【図３】本発明の回収装置に使用可能な水樋の変形例を
示す断面図である。FIG. 3 is a cross-sectional view showing a modified example of a water gutter usable in the recovery device of the present invention.
【図４】本発明の回収装置に使用可能な水樋の他の変形
例を示す断面図である。FIG. 4 is a cross-sectional view showing another modification of the water gutter usable in the recovery device of the present invention.
【図５】本発明に係る回収装置の水樋に流される水流の
温度と、回収された金属サイズの分配率との関係を示す
グラフである。FIG. 5 is a graph showing the relationship between the temperature of the water stream flowing through the water gutter of the recovery device according to the present invention and the distribution ratio of the recovered metal size.
【図６】本発明に係る回収装置の水樋に流される水流の
温度と、回収された金属の嵩比重との関係を示すグラフ
である。FIG. 6 is a graph showing the relationship between the temperature of the water flow in the water gutter of the recovery device according to the present invention and the bulk specific gravity of the recovered metal.
１ 溶融炉 ２ 溶融生成物 ３ 水樋 ５ 水槽 ６ ポンプ ７ 熱交換器 ９ 搬出機 １０ 分離、分級噐 １１ 水砕スラグ １２ 粒状金属 1 melting furnace 2 Melt product 3 water gutter 5 aquarium 6 pumps 7 heat exchanger 9 unloader 10 Separation and classification 11 granulated slag 12 Granular metal
フロントページの続き (72)発明者 黒豆 伸一 愛媛県新居浜市惣開町５番２号 住友重 機械工業株式会社新居浜製造所内 (72)発明者 小出 浩 和歌山県和歌山市湊1850番地 住友金属 工業株式会社 和歌山製鉄所内 (72)発明者 森下 茂 和歌山県和歌山市湊1850番地 住友金属 工業株式会社 和歌山製鉄所内 (56)参考文献 特開 平５−106826（ＪＰ，Ａ) 特開 昭56−84347（ＪＰ，Ａ) 特公 平７−39857（ＪＰ，Ｂ２) 特公 昭56−26625（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) F27D 15/00 B22F 9/08 C21C 5/28 B22D 43/00 C22B 7/04 Front page continuation (72) Inventor Shinichi Kurozu 5-2 Sokai-cho, Niihama-shi, Ehime Sumitomo Heavy Industries, Ltd. Niihama Plant (72) Inventor Hiroshi Koide 1850 Minato, Wakayama-shi, Wakayama Sumitomo Metal Industries, Ltd. Inside the Wakayama Works (72) Inventor Shigeru Morishita 1850 Minato, Wakayama, Wakayama Sumitomo Metal Industries, Ltd. Inside the Wakayama Works (56) Reference JP-A-5-106826 (JP, A) JP-A-56-84347 (JP, 84-347) A) Japanese Patent Publication 7-39857 (JP, B2) Japanese Patent Publication 56-26625 (JP, B1) (58) Fields investigated (Int.Cl. 7 , DB name) F27D 15/00 B22F 9/08 C21C 5 / 28 B22D 43/00 C22B 7/04
Claims (6)
含む溶融生成物から、金属を回収する方法において、前
記溶融生成物を、該溶融生成物に含まれている金属の凝
固点より高い温度で、傾斜した水樋の上部の流水中に投
入し、前記溶融生成物を凝固、転動させ、前記金属及び
前記スラグとを分離出来る状態で、前記水樋の下部から
取り出すことを特徴とする金属の回収方法。1. A method for recovering a metal from a molten product containing a metal containing iron and an iron alloy and a slag, wherein the molten product is a coagulation of the metal contained in the molten product. > higher than the solid point temperature, then poured into flowing water at the top of the inclined water trough, solidifying the molten product, is rolled, in the metal and ready to separating the slag from the bottom of the water gutter A method of recovering a metal, which is characterized by taking out.
取り出される前記金属と前記スラグは互いに異なるサイ
ズの粒状物として取り出されることを特徴とする金属の
回収方法。2. The metal recovery method according to claim 1, wherein the metal and the slag taken out from the lower portion of the water gutter are taken out as granular materials having different sizes.
は、３／１０（１６．７°）以上であることを特徴とす
る金属の回収方法。3. The method for recovering metal according to claim 1, wherein an inclination angle of the water gutter is 3/10 (16.7 °) or more.
がＵ字型を有していることを特徴とする金属の回収方
法。4. The method for recovering metal according to claim 1, wherein the cross section of the water gutter has a U shape.
む溶融生成物から前記金属を回収する回収装置におい
て、予め定められた角度で配置された所定長の水樋と、
前記水樋の上端近傍におかれた溶融生成物を、該溶融生
成物に含まれている金属の凝固点より高い温度で、前記
水樋に投入するための手段と、前記水樋の上端部から水
を流す手段と、前記水樋の下端部に置かれ、前記金属と
前記スラグとを分離して回収する回収手段とを有するこ
とを特徴とする回収装置。5. A recovery device for recovering the metal from a molten product containing a metal containing iron and an iron alloy and a slag, and a water gutter having a predetermined length arranged at a predetermined angle,
Means for charging the molten product placed near the upper end of the water gutter into the water gutter at a temperature higher than the freezing point of the metal contained in the molten product; and the upper end of the water gutter. A collecting device, comprising: a means for flowing water from the water tank; and a collecting means that is placed at a lower end portion of the water gutter and separates and collects the metal and the slag.
記水樋の下端部に置かれた水槽と、水槽内に滞積した滞
留物を搬出する手段と、搬出された滞留物の粒子サイズ
によって前記金属と前記スラグとを分離する分離手段と
を有していることを特徴とする回収装置。6. The water collecting tank according to claim 5, wherein the collecting means is a water tank placed at a lower end portion of the water gutter, a means for carrying out the accumulated material accumulated in the water tank, and a particle size of the discharged accumulated material. And a separating means for separating the metal and the slag from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12949897A JP3448728B2 (en) | 1997-05-20 | 1997-05-20 | Metal recovery method and recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12949897A JP3448728B2 (en) | 1997-05-20 | 1997-05-20 | Metal recovery method and recovery device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10318685A JPH10318685A (en) | 1998-12-04 |
| JP3448728B2 true JP3448728B2 (en) | 2003-09-22 |
Family
ID=15010975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12949897A Expired - Fee Related JP3448728B2 (en) | 1997-05-20 | 1997-05-20 | Metal recovery method and recovery device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3448728B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831515A (en) * | 2010-05-28 | 2010-09-15 | 陈子耀 | Blast furnace water granulated slag collector |
-
1997
- 1997-05-20 JP JP12949897A patent/JP3448728B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10318685A (en) | 1998-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU608459B2 (en) | Cold hearth refining apparatus and method | |
| Venkateswaran et al. | W-scrap recycling by the melt bath technique | |
| JP2000254771A (en) | Ladle and method for lining ladle | |
| JPH11512150A (en) | Production of metal lump | |
| JP3448728B2 (en) | Metal recovery method and recovery device | |
| US4168967A (en) | Nickel and cobalt irregularly shaped granulates | |
| EP1117845B1 (en) | Method for the production of a bulk of molten metal, a metallurgical product, and use of such a product | |
| JP4867406B2 (en) | Steel recovery method and recycling method for steelmaking slag | |
| CA1198595A (en) | Treating molten aluminum | |
| JPH1129810A (en) | Treatment of slag in reducing period of stainless steel and treating apparatus thereof | |
| JP6140423B2 (en) | Method for recovering metal containing desulfurized slag | |
| WO2003010342A1 (en) | Method for accelerating separation of granular metallic iron from slag | |
| JP4012344B2 (en) | Method for producing blast furnace slag fine aggregate | |
| US4588019A (en) | Methods of controlling solidification of metal baths | |
| RU2232066C1 (en) | Method for producing pelletized magnesium or its alloys | |
| JP3817601B2 (en) | Calami treatment method of wrought copper furnace in copper smelting | |
| JP2023012434A (en) | Iron recovery method | |
| JPH075937B2 (en) | Method for producing rapidly solidified metal-based composite powder | |
| JPH0356287B2 (en) | ||
| SU488869A1 (en) | The method of obtaining ferroaluminium | |
| JP2021155770A (en) | Outflow prevention method for slag in ladle | |
| JP2614915B2 (en) | Melting method of clean steel using droplet degassing method | |
| JPH09263853A (en) | Method for refining aluminium | |
| JPH11157888A (en) | Production of rigid water-crushed granulated slag | |
| JPH05337636A (en) | Method for separating and recovering residual steel and slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20030611 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080711 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080711 Year of fee payment: 5 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080711 Year of fee payment: 5 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080711 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090711 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090711 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100711 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110711 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110711 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120711 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120711 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130711 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130711 Year of fee payment: 10 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130711 Year of fee payment: 10 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |