JP3635335B2 - Drum type metal recovery device - Google Patents

Drum type metal recovery device Download PDF

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JP3635335B2
JP3635335B2 JP14084997A JP14084997A JP3635335B2 JP 3635335 B2 JP3635335 B2 JP 3635335B2 JP 14084997 A JP14084997 A JP 14084997A JP 14084997 A JP14084997 A JP 14084997A JP 3635335 B2 JP3635335 B2 JP 3635335B2
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drum
magnetic
magnet
type metal
nonmagnetic
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JPH10314619A (en
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正男 緒方
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Senqcia Corp
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Senqcia Corp
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【０００１】
【発明の属する技術分野】
本発明は、粉粒体中に混在する磁性金属異物を分離回収するドラム型金属回収装置に関する。
【０００２】
【従来の技術】
従来、この種のドラム型金属回収装置では、回転自在の円筒状非磁性ドラムの内部に、非磁性ドラムの回転中心を通る鉛直線に対して左右いずれか一方の領域に永久磁石が固定して配置され、非磁性ドラムを回転させながら、磁石を配置した領域側の非磁性ドラム表面上に上方から粉粒体を落下させ、粉粒体中に混入している磁性金属異物を非磁性ドラムに磁気的に吸着させることで、磁性金属異物を分離している。さらに、非磁性ドラムの回転によって非磁性ドラムの表面上を永久磁石が配置された領域の最下流端部まで磁性金属異物を搬送し、非磁性ドラムの表面に固定したスクレーパによって永久磁石の最下流端部から磁力の影響のない領域まで送り出して、非磁性ドラムの表面から自重により自由落下させて、回収している。
【０００３】
かかる従来のドラム型金属回収装置では、粉粒体中に混入している磁性金属異物が微小である場合や弱磁性体からなる場合に、非磁性ドラムにかかる磁性金属異物を吸着分離させるためには、非磁性ドラムの内部に配置する永久磁石の磁力を高める必要がある。
永久磁石の磁力を高める方法としては、非磁性ドラムの法線方向に着磁された磁石と接線方向に着磁された磁石を交互に配置して強力な磁力を発生させる、いわゆるリパルジョン型配置とした永久磁石を用いたドラム型金属回収装置が、特願平７−３５１９８１号に開示されている。
【０００４】
本従来例のドラム型金属回収装置に用いられる非磁性ドラムの断面図を図３に示す。
図３において、水平方向に固定されたシャフト１を回転中心として回転自在に配置した円筒状非磁性ドラム２の内部に、シャフト１を通る鉛直線に対して図中左側に磁石ドラム３がアーム４を介してシャフト１に固定されている。
磁石ドラム３は、磁性体で構成される半円筒状ヨーク５の外表面が凸部５ａと凹部５ｂとを交互に配置した歯車状の断面形状を有し、軸方向に沿って凸部５ａに磁石ドラム３の法線方向に着磁された第１の磁石６と、凹部５ｂに接線方向に着磁された第２の磁石７を半円筒状ヨーク５の全周に亘って配置し、いわゆるリパルジョン型配置を構成している。
【０００５】
【発明が解決しようとする課題】
しかしながら、このリパルジョン型配置とした磁石ドラムを用いたドラム型金属回収装置においては、磁力が強力であるために、非磁性ドラム２表面上の磁石ドラム３が配置された領域の最下流端部から、さらに下流側であって磁性金属異物を離脱する領域においても、強い磁気的吸着力が及ぶ。
その強い磁力により、釣針などの細長形状の磁性金属異物が混入していた場合には、非磁性ドラム２表面上において磁性金属異物は磁力線に沿って起立した状態となるために、非磁性ドラム２の表面上に固定され非磁性ドラム２の回転に伴って移動するスクレーパ１７を容易にジャンプして乗り越え、スクレーパ１７によって磁力の影響のない領域まで送り出すことができない状態が生じる。
このために、非磁性ドラム２表面上の磁石ドラム３が配置された領域の最下流端部に磁性金属異物が多量に滞留し、磁石ドラム３の磁力によって保持しきれなくなったものが粉粒体とともに落下してしまうため、磁性金属異物の分離回収効率が低下するという不都合が生じた。
そこで、本発明は粉粒体中に混入した磁性金属異物を分離回収する効率を向上させることを可能としたドラム型金属回収装置を提供することを課題とする。
【０００６】
【課題を解決するための手段】
上記課題を解決するために、本発明は、回転軸を水平に向けて円筒状非磁性ドラムを配置し、非磁性ドラムの内部であって非磁性ドラムの回転軸を通る鉛直線に対して左右いずれか一方の領域に、軸方向に延びた永久磁石を周方向に沿って外表面上に複数配置した半円筒状磁石ドラムを固定して配置し、非磁性ドラムの表面にスクレーパを設けたドラム型金属回収装置において、磁石ドラムは、非磁性ドラムの回転方向下流側の磁力を上流側の磁力よりも小さく設定したことを特徴とするドラム型金属回収装置である。
【０００７】
【発明の実施の形態】
本発明の一実施例に係るドラム型金属回収装置について説明する。まず本実施例に係るドラム型金属回収装置に用いる非磁性ドラムの断面図を図１に示す。
図１において、水平方向に固定されたシャフト１を回転中心として、ＳＵＳ３０４、ハイマンガンスティール等からなる円筒状非磁性ドラム２を配置し、この非磁性ドラム２の内部に、シャフト１を通る鉛直線に対して図中左側に磁石ドラム３がアーム４を介してシャフト１に固定されている。
【０００８】
磁石ドラム３は、鉄鋼材料などの磁性体で構成される半円筒状ヨーク５と、軸方向に沿って磁石ドラム３の法線方向に着磁された第１の磁石６と、接線方向に着磁された第２の磁石７から構成されている。なお、第１の磁石６及び第２の磁石７には、Ｎｄ−Ｆｅ−Ｂ系希土類磁石（日立金属製ＨＳ−４０ＡＨ）を用いている。
半円筒状ヨーク５は、その外表面が凸部５ａと凹部５ｂを交互に等間隔で配置した歯車状の断面形状を有する。磁石ドラム３での非磁性ドラム２の回転方向上流側部分においては、凸部５ａに第１の磁石６が配置され、凹部５ｂに第２の磁石７が配置されている。一方、回転方向下流側部分においては、凸部５ａにのみ第１の磁石６が配置されている。
【０００９】
非磁性ドラム２の回転方向上流側部分においては、隣接する第１の磁石６、６は磁界の方向が互いに逆方向となるように配置される。すなわち、例えば、一の第１の磁石６がＮ極を外側に向けて配置されている場合、それに隣接する第１の磁石６はＳ極を外側に向けて配置される。
一方、隣接する第２の磁石７、７は、２つの隣接する第２の磁石７、７に挟まれる第１の磁石６の外側に向けて配置された磁極と同極性の磁極が対向するように配置される。すなわち、例えば、一の第１の磁石６を挟んで配置される２個の第２の磁石７、７は、当該第１の磁石６がＮ極を外側に向けて配置されている場合には、ともに当該第１の磁石６側にＮ極を向けて配置される。
このように非磁性ドラム２の回転方向上流側部分においては、磁力線を半円筒状ヨーク５の外表面凸部５ａに集中させる構造とし、また、第１の磁石６と第２の磁石７との反発力を利用することで高い磁力を得ることが可能である。
一方、非磁性ドラム２の回転方向下流側部分においては、半円筒状ヨーク５の外表面凸部５ａにのみ第１の磁石６を磁界の方向が互いに逆方向となるように配置された構成とし、非磁性ドラム２の回転方向上流側部分よりも磁力を弱く構成している。
【００１０】
つぎに本実施例に係るドラム型金属回収装置の概略断面図を図２に示す。
図２において、前述した非磁性ドラム２が、筺体８の内部に配置されている。
筺体８の上部には、粉粒体状の原料９を一旦溜めておくホッパー１０が配置され、案内板１１と、供給量を調整するダンパー１２とにより原料９を非磁性ドラム２上に導く。また、筺体８の下部には、仕切部材１３を介して、その両側に原料排出口１４と、磁性金属異物排出口１５とが設けられている。
【００１１】
ホッパー１０に投入された原料９は、非磁性ドラム２の頂上部近傍であって、頂上部よりもシャフト１を通る鉛直線に対して磁石ドラム４が固定されている領域側に導かれ、非磁性ドラム２の表面上を反時計方向に回転する非磁性ドラム２に沿って落下する。
非磁性体である原料９は磁石ドラム３から発生する磁界の影響を受けず、非磁性ドラム２の表面上を落下し、シャフト１を通る水平面近傍で非磁性ドラム２表面上から離脱し、原料排出口１４から排出される。
【００１２】
一方、原料９に混入した磁性金属異物１６は、原料９が非磁性ドラム２の表面上を落下する間に、磁石ドラム３から発生する磁界に捕捉されて、非磁性ドラム２上に吸着されながら搬送される。
磁石ドラム３における非磁性ドラム２の回転方向上流側部分では、前述のように第１の磁石６と第１の磁石７とを配置し、磁石ドラム３の表面に３００〜５００ｍＴと強力な磁力を発生させる構成としたことによって、磁性金属異物１６が微小である場合や、弱磁性体からなる場合でも、非磁性ドラム２表面上に吸着させることが可能となる。また、一旦非磁性ドラム２表面上に吸着された磁性金属異物１６が、非磁性ドラム２の表面上を落下する原料９によって剥離されることも防止できる。
【００１３】
非磁性ドラム２表面上に吸着された磁性金属異物１６は、非磁性ドラム２の回転に従って搬送され、磁石ドラム３が配置された領域の最下流端部に到達する。最下流端部においては、磁性金属異物１６は磁石ドラム３の下流側に形成された磁力に拘束され滞留するが、非磁性ドラム２の表面上に軸方向の全長に亘って固定した突起部からなるスクレーパ１７によって、シャフト１を通る鉛直線に対して図中右側の磁界の働かない領域まで押し出される。これによって、磁性金属異物１６は磁石ドラム３の磁界から開放されて非磁性ドラム２表面より落下し、磁性金属異物排出口１５から排出される。
本実施例のドラム型金属回収装置に用いる磁石ドラム３においては、非磁性ドラム２の回転方向下流側の領域では、前述したように第１の磁石６のみによって構成し、磁力を１００〜３００ｍＴと上流側の領域よりも弱く設定している。これによって、磁性金属異物が細長形状の場合に、磁石ドラム３の磁界によって磁性金属異物１６が起立した状態となっても、磁界による拘束力は弱いため、スクレーパ１７の移動を乗り越えて磁石ドラム３の磁界に拘束される現象は起こりにくい。そのため、磁性金属異物１６はスクレーパ１７によって磁力の影響のない領域まで搬送することができ、粉粒体中の磁性金属異物を分離回収する効率を向上させることが可能となる。
【００１４】
なお、磁石ドラム３において強力な表面磁力が必要となるのは、非磁性体である原料９が非磁性ドラム２の表面上を落下し、原料９に混入した磁性金属異物１６を磁石ドラム３から発生する磁界によって捕捉し、非磁性ドラム２上に吸着する領域である。したがって、少なくとも原料９が非磁性ドラム２表面に接触する非磁性ドラム２の頂上部から非磁性ドラム２表面上から離脱するシャフト１を通る水平面近傍までの上流側領域について、磁石ドラム３の表面磁力を強力に構成する必要がある。
一方、磁石ドラム３において比較的小さな表面磁力とする必要があるのは、磁石ドラム３が配置された領域の最下流端部近傍である。したがって、少なくとも磁石ドラム３の最下流端部近傍を含んだ領域において磁力を小さく構成する必要がある。
【００１５】
【発明の効果】
以上のように、本発明によれば、ドラム型金属回収装置に用いる磁石ドラムの磁力を上流側で強くし、かつ下流側で弱く構成することによって、粉粒体中に混入した磁性金属異物を分離回収する効率を向上させることが可能となった。
【図面の簡単な説明】
【図１】本発明の一実施例に係るドラム型金属回収装置に用いる非磁性ドラムの断面図
【図２】本発明の一実施例に係るドラム型金属回収装置の概略断面図
【図３】従来例のドラム型金属回収装置に用いられる非磁性ドラムの断面図
【符号の説明】
１…シャフト ２…非磁性ドラム
３…磁石ドラム ４…アーム
５…半円筒状ヨーク ５ａ…半円筒状ヨーク凸部
５ｂ…半円筒状ヨーク凹部 ６…第１の磁石
７…第２の磁石 ８…筺体
９…粉粒体状の原料 １０…ホッパー
１１…案内板 １２…ダンパー
１３…仕切部材 １４…原料排出口
１５…磁性金属異物排出口 １６…磁性金属異物
１７…スクレーパ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drum-type metal recovery apparatus that separates and recovers magnetic metal foreign matter mixed in a granular material.
[0002]
[Prior art]
Conventionally, in this type of drum-type metal recovery apparatus, a permanent magnet is fixed in one of the left and right areas with respect to a vertical line passing through the center of rotation of the nonmagnetic drum inside the rotatable cylindrical nonmagnetic drum. While rotating and rotating the non-magnetic drum, the powder particles are dropped from above onto the surface of the non-magnetic drum on the side where the magnet is disposed, and the magnetic metal foreign matter mixed in the powder particles is transferred to the non-magnetic drum. Magnetic metal foreign matter is separated by magnetically adsorbing it. Further, by rotating the non-magnetic drum, the magnetic metal foreign matter is transported to the most downstream end of the area where the permanent magnet is disposed on the surface of the non-magnetic drum, and the most downstream of the permanent magnet by a scraper fixed on the surface of the non-magnetic drum. It is sent out from the end to a region where there is no influence of magnetic force, and is freely dropped from the surface of the non-magnetic drum by its own weight and collected.
[0003]
In such a conventional drum-type metal recovery device, in order to attract and separate the magnetic metal foreign matter applied to the non-magnetic drum when the magnetic metal foreign matter mixed in the granular material is very small or is made of a weak magnetic material. Needs to increase the magnetic force of the permanent magnet disposed inside the non-magnetic drum.
As a method for increasing the magnetic force of the permanent magnet, there is a so-called repulsion type arrangement in which a magnet magnetized in the normal direction of the non-magnetic drum and a magnet magnetized in the tangential direction are alternately arranged to generate a strong magnetic force. Japanese Patent Application No. 7-351981 discloses a drum-type metal recovery device using a permanent magnet.
[0004]
FIG. 3 shows a cross-sectional view of a non-magnetic drum used in the drum type metal recovery apparatus of the conventional example.
In FIG. 3, a magnet drum 3 is arranged on the left side in the figure with respect to a vertical line passing through the shaft 1 inside a cylindrical non-magnetic drum 2 that is rotatably arranged with the shaft 1 fixed in the horizontal direction as a rotation center. It is being fixed to the shaft 1 via.
The magnet drum 3 has a gear-like cross-sectional shape in which the outer surface of a semi-cylindrical yoke 5 made of a magnetic material is arranged with convex portions 5a and concave portions 5b alternately, and the convex portion 5a extends in the axial direction. A first magnet 6 magnetized in the normal direction of the magnet drum 3 and a second magnet 7 magnetized in the tangential direction in the recess 5b are arranged over the entire circumference of the semi-cylindrical yoke 5, so-called It constitutes a repulsion type arrangement.
[0005]
[Problems to be solved by the invention]
However, in the drum type metal recovery apparatus using the magnetic drum having the repulsion type arrangement, since the magnetic force is strong, from the most downstream end of the area where the magnetic drum 3 is arranged on the surface of the nonmagnetic drum 2. In addition, a strong magnetic attraction force is exerted even in a region downstream of the magnetic metal foreign matter.
When the elongated magnetic metal foreign matter such as a fishing hook is mixed by the strong magnetic force, the magnetic metal foreign matter stands up along the magnetic force line on the surface of the nonmagnetic drum 2. The scraper 17 that is fixed on the surface of the nonmagnetic drum 2 and moves with the rotation of the non-magnetic drum 2 jumps easily over the surface, and the scraper 17 cannot feed out to an area not affected by the magnetic force.
For this reason, a large amount of magnetic metal foreign matter stays at the most downstream end of the region where the magnet drum 3 is disposed on the surface of the non-magnetic drum 2 and cannot be held by the magnetic force of the magnet drum 3. In addition, since it falls together, there arises a disadvantage that the separation and recovery efficiency of the magnetic metal foreign matter is lowered.
Then, this invention makes it a subject to provide the drum type metal collection | recovery apparatus which made it possible to improve the efficiency which isolate | separates and collects the magnetic metal foreign material mixed in the granular material.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a cylindrical non-magnetic drum with the rotation axis oriented horizontally, and the right and left sides of a vertical line passing through the rotation axis of the non-magnetic drum inside the non-magnetic drum. A drum in which a semi-cylindrical magnet drum, in which a plurality of permanent magnets extending in the axial direction are arranged on the outer surface along the circumferential direction, is fixed and arranged in any one region, and a scraper is provided on the surface of the non-magnetic drum In the mold metal recovery apparatus, the magnet drum is a drum type metal recovery apparatus characterized in that the magnetic force on the downstream side in the rotation direction of the non-magnetic drum is set smaller than the magnetic force on the upstream side.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A drum type metal recovery apparatus according to an embodiment of the present invention will be described. First, FIG. 1 shows a cross-sectional view of a non-magnetic drum used in the drum-type metal recovery apparatus according to this embodiment.
In FIG. 1, a cylindrical nonmagnetic drum 2 made of SUS304, high manganese steel or the like is disposed around a shaft 1 fixed in the horizontal direction as a rotation center, and a vertical line passing through the shaft 1 is disposed inside the nonmagnetic drum 2. On the other hand, the magnetic drum 3 is fixed to the shaft 1 via the arm 4 on the left side in the drawing.
[0008]
The magnet drum 3 includes a semi-cylindrical yoke 5 made of a magnetic material such as a steel material, a first magnet 6 magnetized in the normal direction of the magnet drum 3 along the axial direction, and a tangential direction. It is composed of a magnetized second magnet 7. The first magnet 6 and the second magnet 7 are Nd—Fe—B rare earth magnets (HS-40AH made by Hitachi Metals).
The semi-cylindrical yoke 5 has a gear-like cross-sectional shape in which the outer surface has convex portions 5a and concave portions 5b alternately arranged at equal intervals. In the upstream portion of the magnet drum 3 in the rotation direction of the non-magnetic drum 2, the first magnet 6 is disposed in the convex portion 5a, and the second magnet 7 is disposed in the concave portion 5b. On the other hand, the first magnet 6 is disposed only on the convex portion 5a in the downstream portion in the rotational direction.
[0009]
In the upstream portion of the nonmagnetic drum 2 in the rotational direction, the adjacent first magnets 6 and 6 are arranged so that the directions of the magnetic fields are opposite to each other. That is, for example, when one first magnet 6 is disposed with the north pole facing outward, the adjacent first magnet 6 is disposed with the south pole facing outward.
On the other hand, the adjacent second magnets 7 and 7 are arranged so that the magnetic poles having the same polarity as the magnetic poles arranged toward the outside of the first magnet 6 sandwiched between the two adjacent second magnets 7 and 7 face each other. Placed in. That is, for example, two second magnets 7 and 7 arranged with one first magnet 6 sandwiched between them, when the first magnet 6 is arranged with the N pole facing outward, Both are arranged with the north pole facing the first magnet 6 side.
In this way, in the upstream portion of the nonmagnetic drum 2 in the rotational direction, the magnetic field lines are concentrated on the outer surface convex portion 5a of the semi-cylindrical yoke 5, and the first magnet 6 and the second magnet 7 A high magnetic force can be obtained by utilizing the repulsive force.
On the other hand, in the downstream portion of the rotation direction of the nonmagnetic drum 2, the first magnet 6 is disposed only on the outer surface convex portion 5a of the semi-cylindrical yoke 5 so that the magnetic field directions are opposite to each other. The magnetic force is weaker than that of the upstream portion of the nonmagnetic drum 2 in the rotational direction.
[0010]
Next, a schematic cross-sectional view of the drum-type metal recovery apparatus according to the present embodiment is shown in FIG.
In FIG. 2, the nonmagnetic drum 2 described above is disposed inside the housing 8.
A hopper 10 for temporarily storing the powdery raw material 9 is disposed on the upper portion of the housing 8, and the raw material 9 is guided onto the nonmagnetic drum 2 by a guide plate 11 and a damper 12 for adjusting the supply amount. In addition, a raw material discharge port 14 and a magnetic metal foreign material discharge port 15 are provided on both sides of the lower portion of the housing 8 via a partition member 13.
[0011]
The raw material 9 thrown into the hopper 10 is led to the vicinity of the top of the nonmagnetic drum 2 and to the region where the magnet drum 4 is fixed to the vertical line passing through the shaft 1 from the top. It falls along the non-magnetic drum 2 that rotates counterclockwise on the surface of the magnetic drum 2.
The non-magnetic material 9 is not affected by the magnetic field generated from the magnetic drum 3, falls on the surface of the non-magnetic drum 2, leaves the non-magnetic drum 2 near the horizontal plane passing through the shaft 1, It is discharged from the discharge port 14.
[0012]
On the other hand, the magnetic metal foreign matter 16 mixed in the raw material 9 is captured by the magnetic field generated from the magnet drum 3 and adsorbed on the nonmagnetic drum 2 while the raw material 9 falls on the surface of the nonmagnetic drum 2. Be transported.
As described above, the first magnet 6 and the first magnet 7 are disposed in the upstream portion of the magnetic drum 3 in the rotation direction of the nonmagnetic drum 2, and a strong magnetic force of 300 to 500 mT is applied to the surface of the magnet drum 3. By adopting such a configuration, even when the magnetic metal foreign material 16 is very small or made of a weak magnetic material, it can be adsorbed on the surface of the non-magnetic drum 2. Further, it is possible to prevent the magnetic metal foreign matter 16 once adsorbed on the surface of the nonmagnetic drum 2 from being peeled off by the raw material 9 falling on the surface of the nonmagnetic drum 2.
[0013]
The magnetic metal foreign matter 16 adsorbed on the surface of the non-magnetic drum 2 is conveyed according to the rotation of the non-magnetic drum 2 and reaches the most downstream end of the area where the magnet drum 3 is disposed. At the most downstream end, the magnetic metal foreign material 16 stays constrained by the magnetic force formed on the downstream side of the magnet drum 3, but from the protrusion fixed on the surface of the nonmagnetic drum 2 over the entire length in the axial direction. The scraper 17 is pushed out to the region where the magnetic field does not act on the right side in the figure with respect to the vertical line passing through the shaft 1. As a result, the magnetic metal foreign matter 16 is released from the magnetic field of the magnetic drum 3 and falls from the surface of the nonmagnetic drum 2 and is discharged from the magnetic metal foreign matter discharge port 15.
In the magnet drum 3 used in the drum-type metal recovery apparatus of the present embodiment, the region on the downstream side in the rotation direction of the nonmagnetic drum 2 is configured by only the first magnet 6 as described above, and the magnetic force is 100 to 300 mT. It is set weaker than the upstream area. As a result, when the magnetic metal foreign object is elongated, even if the magnetic metal foreign object 16 stands up due to the magnetic field of the magnet drum 3, the magnetic force of the magnetic field is weak, so the movement of the scraper 17 is overcome and the magnet drum 3 is overcome. The phenomenon of being restrained by the magnetic field is unlikely to occur. Therefore, the magnetic metal foreign material 16 can be conveyed to an area where the magnetic force is not affected by the scraper 17, and the efficiency of separating and collecting the magnetic metal foreign material in the granular material can be improved.
[0014]
The magnet drum 3 requires a strong surface magnetic force because the raw material 9 which is a non-magnetic material falls on the surface of the non-magnetic drum 2, and the magnetic metal foreign matter 16 mixed in the raw material 9 is removed from the magnet drum 3. This is a region that is captured by the generated magnetic field and attracted onto the non-magnetic drum 2. Accordingly, at least in the upstream region from the top of the nonmagnetic drum 2 where the raw material 9 contacts the surface of the nonmagnetic drum 2 to the vicinity of the horizontal plane passing through the shaft 1 separating from the surface of the nonmagnetic drum 2, the surface magnetic force of the magnet drum 3. Need to be powerfully configured.
On the other hand, the magnet drum 3 needs to have a relatively small surface magnetic force in the vicinity of the most downstream end of the region where the magnet drum 3 is disposed. Therefore, it is necessary to configure a small magnetic force in a region including at least the vicinity of the most downstream end of the magnet drum 3.
[0015]
【The invention's effect】
As described above, according to the present invention, the magnetic metal foreign matter mixed in the granular material can be reduced by making the magnetic force of the magnetic drum used in the drum-type metal recovery device stronger on the upstream side and weaker on the downstream side. The efficiency of separation and recovery can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a non-magnetic drum used in a drum-type metal recovery apparatus according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of a drum-type metal recovery apparatus according to an embodiment of the present invention. Sectional view of a non-magnetic drum used in a conventional drum type metal recovery device
DESCRIPTION OF SYMBOLS 1 ... Shaft 2 ... Nonmagnetic drum 3 ... Magnet drum 4 ... Arm 5 ... Semi-cylindrical yoke 5a ... Semi-cylindrical yoke convex part 5b ... Semi-cylindrical yoke concave part 6 ... 1st magnet 7 ... 2nd magnet 8 ... Housing 9 ... Raw material in granular form 10 ... Hopper 11 ... Guide plate 12 ... Damper 13 ... Partition member 14 ... Raw material discharge port 15 ... Magnetic metal foreign material discharge port 16 ... Magnetic metal foreign material 17 ... Scraper

Claims (1)

回転軸を水平に向けて円筒状非磁性ドラムを配置し、該非磁性ドラムの内部であって該非磁性ドラムの前記回転軸を通る鉛直線に対して左右いずれか一方の領域に、軸方向に延びた永久磁石を周方向に沿って外表面上に複数配置した半円筒状磁石ドラムを固定して配置し、前記非磁性ドラムの表面にスクレーパを設けたドラム型金属回収装置において、前記磁石ドラムは、前記非磁性ドラムの回転方向上流側では、前記磁石ドラムの法線方向に着磁された第１の磁石と接線方向に着磁された第２の磁石を交互に配置され、前記円筒状非磁性ドラムの回転方向下流側では、前記磁石ドラムの法線方向に着磁された第１の磁石のみが配置されたことを特徴とするドラム型金属回収装置。  A cylindrical non-magnetic drum is arranged with the rotation axis oriented horizontally, and extends in the axial direction to either the left or right region inside the non-magnetic drum and the vertical line passing through the rotation axis of the non-magnetic drum. In a drum-type metal recovery apparatus in which a plurality of semi-cylindrical magnet drums arranged on the outer surface along the circumferential direction are fixed and disposed, and a scraper is provided on the surface of the non-magnetic drum, the magnet drum is The first magnet magnetized in the normal direction of the magnet drum and the second magnet magnetized in the tangential direction are alternately arranged on the upstream side in the rotation direction of the non-magnetic drum, A drum-type metal recovery apparatus, wherein only the first magnet magnetized in the normal direction of the magnet drum is disposed downstream of the magnetic drum in the rotation direction.
JP14084997A 1997-05-14 1997-05-14 Drum type metal recovery device Expired - Fee Related JP3635335B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14084997A JP3635335B2 (en) 1997-05-14 1997-05-14 Drum type metal recovery device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14084997A JP3635335B2 (en) 1997-05-14 1997-05-14 Drum type metal recovery device

Publications (2)

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JPH10314619A JPH10314619A (en) 1998-12-02
JP3635335B2 true JP3635335B2 (en) 2005-04-06

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JP2013255884A (en) * 2012-06-12 2013-12-26 Nippon Steel & Sumitomo Metal Corp Magnetic material sorting device
CN102773160A (en) * 2012-08-23 2012-11-14 姜大坚 Dry magnetic separator
KR101436698B1 (en) * 2012-12-21 2014-09-01 한국남부발전 주식회사 Magnetic sorter having crushing function
JP6218390B2 (en) * 2013-02-14 2017-10-25 住友重機械ファインテック株式会社 Rotating drum and method of manufacturing the rotating drum
CN112058487A (en) * 2019-06-10 2020-12-11 环能科技股份有限公司 Magnetic medium mixes flocculation and deposits magnetic drum and magnetism ware of retrieving for magnetic recovery ware

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