JP3441390B2 - Drum type magnetic material sorting and collecting device - Google Patents
Drum type magnetic material sorting and collecting deviceInfo
- Publication number
- JP3441390B2 JP3441390B2 JP37563698A JP37563698A JP3441390B2 JP 3441390 B2 JP3441390 B2 JP 3441390B2 JP 37563698 A JP37563698 A JP 37563698A JP 37563698 A JP37563698 A JP 37563698A JP 3441390 B2 JP3441390 B2 JP 3441390B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnet
- drum
- outer peripheral
- raw material
- 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
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- Electrostatic Separation (AREA)
- Combined Means For Separation Of Solids (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、粉粒体に混在する
極微細な磁性体異物および弱磁性体異物を分離、回収す
るためのドラム型磁性体選別回収装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type magnetic substance sorting and collecting apparatus for separating and collecting ultrafine magnetic substance foreign substances and weak magnetic substance foreign substances mixed in powder particles.
【０００２】[0002]
【従来の技術】粉粒体中に混在する磁性体異物（鉄屑、
鉄粉など）を回収するために、ドラム型磁性体選別回収
装置が使用されている。図５に従来のドラム型磁性体選
別回収装置の断面を示す。図５において、１はケースで
あり、その内部に半円筒状の磁石ドラム２を内蔵した円
筒状非磁性ドラム３が回転自在に配置されている。ま
た、非磁性ドラム３の表面には対称位置に２個のスクレ
ーパ１１が設けられている。ケース１の上部には、処理
物である原料５を受け取るホッパー４と、原料５を下方
に導く案内板６と、原料５を磁石ドラム２側へ連続的に
適量供給するダンパー７が設けられている。ケース１の
下部には、仕切部材１２とその両側に位置する非磁性体
排出口９および磁性体異物排出口１３が設けられてい
る。2. Description of the Related Art Magnetic particles (iron scraps, etc.) mixed in powders
A drum type magnetic material sorting and collecting apparatus is used to collect (iron powder, etc.). FIG. 5 shows a cross section of a conventional drum type magnetic material sorting and collecting apparatus. In FIG. 5, reference numeral 1 denotes a case in which a cylindrical non-magnetic drum 3 having a semi-cylindrical magnet drum 2 incorporated therein is rotatably arranged. Further, two scrapers 11 are provided on the surface of the non-magnetic drum 3 at symmetrical positions. In the upper part of the case 1, there are provided a hopper 4 for receiving the raw material 5 as a processed material, a guide plate 6 for guiding the raw material 5 downward, and a damper 7 for continuously supplying the raw material 5 in an appropriate amount to the magnet drum 2 side. There is. A partition member 12 and a non-magnetic material discharge port 9 and a magnetic foreign material discharge port 13 located on both sides of the partition member 12 are provided in the lower portion of the case 1.
【０００３】図６に上記の非磁性ドラム３の構造を示
す。円筒状磁性部材１４は、アーム１７を介してシャフ
ト１８に固定されている。鉄鋼材料で形成された磁性部
材１４の外周面には、非磁性ドラム３側がＮ極になるよ
うに厚さ方向に磁化された永久磁石１５と、非磁性ドラ
ム３側がＳ極になるように厚さ方向に磁化された永久磁
石１６とが交互に等間隔を保ち配列され、磁性部材１４
を介して磁気回路を構成する。すなわち永久磁石１５の
Ｎ極から流出した磁束ａは、非磁性ドラム３の表面に磁
界を発生させ磁性体異物１０を貫通して磁気吸着させた
後、永久磁石１６のＳ極に戻る磁気回路を構成する。FIG. 6 shows the structure of the non-magnetic drum 3 described above. The cylindrical magnetic member 14 is fixed to the shaft 18 via an arm 17. On the outer peripheral surface of the magnetic member 14 formed of a steel material, the permanent magnet 15 magnetized in the thickness direction so that the non-magnetic drum 3 side becomes the N pole, and the non-magnetic drum 3 side so as to become the S pole are thick. And the permanent magnets 16 magnetized in the vertical direction are alternately arranged at equal intervals.
To form a magnetic circuit. That is, the magnetic flux a flowing out from the N pole of the permanent magnet 15 generates a magnetic field on the surface of the non-magnetic drum 3 to penetrate the magnetic foreign substance 10 to be magnetically attracted, and then returns to the S pole of the permanent magnet 16. Constitute.
【０００４】上記の装置によれば、次のようにして原料
中の異物が回収される。ホッパー４から投入された原料
５中の非磁性体である主原料８は、磁石ドラム２から発
生する磁力の影響を受けないために、自重により自由落
下して非磁性体排出口９から排出される。一方、原料５
中に混在する磁性体異物１０は、磁石ドラム２から発生
する磁力の影響を受けるため非磁性ドラム３の表面に吸
着される。非磁性ドラム３を反時計方向ＲＤに回転させ
ると、磁性金属異物１０は非磁性ドラム３の表面に吸着
された状態で、スクレーパ１１によってケース１の下部
に搬送される。この磁性体異物１０は、仕切部材１２の
図面右側領域に搬送されると磁石ドラム２から発生する
磁力の影響から解放され、非磁性ドラム３の表面から落
下して磁性体異物排出口１３から排出されて主原料８か
ら分離回収される。上記のように、従来のドラム型磁性
体選別回収装置は、原料５中に混在する磁性金属異物１
０を磁石ドラム２の磁力で非磁性ドラム３の表面に吸着
させ、スクレーパ１１によって搬送することにより、主
原料８との選別回収を行なっている。According to the above apparatus, the foreign matter in the raw material is recovered as follows. The main raw material 8 which is a non-magnetic material in the raw material 5 charged from the hopper 4 is free from the influence of the magnetic force generated from the magnet drum 2 and therefore falls freely by its own weight and is discharged from the non-magnetic material discharge port 9. It On the other hand, raw material 5
The magnetic foreign matter 10 mixed therein is adsorbed on the surface of the non-magnetic drum 3 because it is affected by the magnetic force generated from the magnet drum 2. When the non-magnetic drum 3 is rotated in the counterclockwise direction RD, the magnetic metal foreign matter 10 is conveyed to the lower part of the case 1 by the scraper 11 while being adsorbed on the surface of the non-magnetic drum 3. The magnetic foreign matter 10 is released from the influence of the magnetic force generated from the magnetic drum 2 when conveyed to the right side region of the partition member 12 in the drawing, and falls from the surface of the non-magnetic drum 3 to be discharged from the magnetic foreign matter discharge port 13. It is separated and recovered from the main raw material 8. As described above, the conventional drum-type magnetic material sorting and collecting apparatus uses the magnetic metal foreign matter 1 mixed in the raw material 5.
0 is adsorbed on the surface of the non-magnetic drum 3 by the magnetic force of the magnetic drum 2 and conveyed by the scraper 11 to sort and recover the main raw material 8.
【０００５】一方、特開平９−１７３８９０号に示され
るように、回転自在に設置した円筒状非磁性ドラム内部
に、外周面に複数の永久磁石を有する半円筒状磁性部材
が固定配置された磁石ドラムを有し、前記磁石ドラム
は、外周部が歯車状に形成された磁性部材と、前記磁性
部材の外周凹部に設置され、前記磁石ドラムの接線方向
と同一の磁化方向を有する第一の磁石と、前記磁性部材
の外周凸部に設置され、前記磁石ドラムの法線方向と同
一の磁化方向を有する第二の磁石とを有し、前記第一の
磁石は、同極性の磁極が対向するように配置され、前記
第二の磁石は、前記円筒状非磁性ドラム側の磁極が、隣
接する第一の磁石の接触面の磁極と同極性となるように
配置されている磁性体選別回収装置がある。On the other hand, as disclosed in Japanese Patent Application Laid-Open No. 9-173890, a magnet in which a semi-cylindrical magnetic member having a plurality of permanent magnets on its outer peripheral surface is fixedly arranged inside a rotatably installed cylindrical non-magnetic drum. The magnet drum has a magnetic member having an outer peripheral portion formed in a gear shape, and a first magnet installed in the outer peripheral concave portion of the magnetic member and having the same magnetization direction as the tangential direction of the magnetic drum. And a second magnet installed on the outer peripheral convex portion of the magnetic member and having the same magnetization direction as the normal direction of the magnet drum, and the first magnet has magnetic poles of the same polarity opposed to each other. And the second magnet is arranged such that the magnetic pole on the cylindrical non-magnetic drum side has the same polarity as the magnetic pole on the contact surface of the adjacent first magnet. There is.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら従来のド
ラム型磁性体選別回収装置では、磁石ドラムは図８に示
すような磁気回路構造を有し、磁石ドラムから発生する
磁力の強度に限界があるため、吸着選別回収される磁性
体異物が微小形状且つ弱磁性体になると選別回収率が著
しく低下するという問題点を有していた。また、特開平
９−１７３８９０号の装置でも、磁石ドラムと磁性体異
物を吸着する非磁性ドラム表面との間の距離が大である
ため、非磁性ドラム表面の磁力は磁石ドラム上の永久磁
石配列が作る磁力より低下する。従って、長さ５０μｍ
以下の極微小磁性体および弱磁性体の選別回収には適さ
ないという問題点があった。However, in the conventional drum type magnetic material sorting and collecting apparatus, the magnet drum has a magnetic circuit structure as shown in FIG. 8 and the strength of the magnetic force generated from the magnet drum is limited. However, there is a problem that when the magnetic foreign matter to be adsorbed, sorted and collected becomes a minute shape and a weak magnetic substance, the sorting and collection rate is significantly reduced. Also in the apparatus of Japanese Patent Laid-Open No. 9-173890, since the distance between the magnet drum and the surface of the non-magnetic drum that adsorbs the magnetic foreign matter is large, the magnetic force on the surface of the non-magnetic drum is a permanent magnet array on the magnet drum. Is less than the magnetic force created by. Therefore, the length is 50 μm
There is a problem that it is not suitable for the following selective collection of extremely small magnetic materials and weak magnetic materials.
【０００７】従って本発明の目的は、粒径０．１ｍｍ以
下程度の極微小磁性体異物および弱磁性体異物を効率良
く回収することのできるドラム型磁性体選別回収装置を
提供することである。Therefore, an object of the present invention is to provide a drum type magnetic material sorting and collecting apparatus capable of efficiently collecting extremely small magnetic foreign matter and weak magnetic foreign matter having a particle diameter of about 0.1 mm or less.
【０００８】[0008]
【課題を解決するための手段】上記課題は以下の手法に
より解決できる。すなわち、原料供給手段と、その下方
に回転自在に設置された、外周面に複数の磁石を有する
永久磁石部材を備えた円筒状磁石ドラムと、磁性体異物
排出口と、非磁性体排出口とを有するドラム型磁性体選
別回収装置において、前記磁石ドラムは、永久磁石部材
と、永久磁石部材と一体構造であり、永久磁石部材外周
表面に設置され、原料を受け取る表面層とを備え、永久
磁石部材は、外周部が歯車状に形成された磁性部材と、
前記磁性部材の外周凹部に設置され、前記磁石ドラムの
接線方向と同一の磁化方向を有する第一の磁石と、前記
磁性部材の外周凸部に設置され、前記磁石ドラムの法線
方向と同一の磁化方向を有する第二の磁石とを有し、前
記第一の磁石は、同極性の磁極が対向するように配置さ
れ、前記第二の磁石は、前記磁石ドラムの外周側の磁極
が、隣接する第一の磁石の接触面の磁極と同極性となる
ように配置されていることを特徴とする、ドラム型磁性
体選別回収装置。The above-mentioned problems can be solved by the following method. That is, a raw material supply means, a cylindrical magnet drum rotatably installed below the permanent magnet member having a plurality of magnets on its outer peripheral surface, a magnetic substance foreign matter discharge port, and a nonmagnetic substance discharge port. In the drum type magnetic material sorting and collecting apparatus, the magnet drum includes a permanent magnet member and a structure integral with the permanent magnet member. The magnet drum is provided on a peripheral surface of the permanent magnet member and has a surface layer for receiving a raw material. The member is a magnetic member whose outer peripheral portion is formed in a gear shape,
The first magnet is installed in the outer peripheral recess of the magnetic member and has the same magnetization direction as the tangential direction of the magnet drum, and the first magnet is installed in the outer peripheral protrusion of the magnetic member and is the same as the normal direction of the magnet drum. A second magnet having a magnetization direction, the first magnet is arranged so that magnetic poles of the same polarity face each other, and the second magnet has magnetic poles on the outer peripheral side of the magnet drum adjacent to each other. And a magnetic body on the contact surface of the first magnet, the drum type magnetic material sorting and collecting apparatus.
【０００９】第一の磁石の内周側磁極面に非磁性板が接
着固定された磁石ユニットと、第二の磁石の内周側磁極
面に磁性板が接着固定された磁石ユニットとを有し、両
磁石ユニットは円周方向に沿って交互に、かつ少なくと
も機械的に前記磁性部材に固定されていることを特徴と
するドラム型磁性体選別回収装置。The magnet unit has a non-magnetic plate adhered and fixed to the inner magnetic pole surface of the first magnet, and a magnet unit having a magnetic plate adhered and fixed to the inner magnetic pole surface of the second magnet. A drum type magnetic material sorting and collecting apparatus, wherein both magnet units are fixed to the magnetic member alternately and at least mechanically along a circumferential direction.
【００１０】前記磁石ドラムに付着した磁性体異物を掻
き落とすためのブラシ、またはブレードを有することを
特徴とするドラム型磁性体選別回収装置。A drum type magnetic material sorting and collecting apparatus characterized by having a brush or a blade for scraping off the magnetic foreign material attached to the magnetic drum.
【００１１】[0011]
【発明の実施の形態】図１に本発明の磁性体選別回収装
置の断面図、図２に図１の磁性ドラム２の１／４断面図
を示す。図１において、図７と同一部分は同一の参照符
号で示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a sectional view of a magnetic material sorting and collecting apparatus of the present invention, and FIG. 2 shows a 1/4 sectional view of a magnetic drum 2 of FIG. In FIG. 1, the same parts as those in FIG. 7 are designated by the same reference numerals.
【００１２】図１において、１はケースであり、その内
部に表面に複数の磁石を有する永久磁石部材２７と、そ
の表面を保護するための表面層２８とを備えた磁石ドラ
ム２を有する。永久磁石部材２７の外周表面に設置され
た表面層２８は永久磁石部材２７と一体構造であり、磁
石ドラム２が回転する際に永久磁石部材２７とともに一
体的に回転する。ケース１の上部には、原料５を受け取
るホッパー４と、ホッパー４内に投入された原料５を下
方に導く案内板６と、原料５の供給量を制御するダンパ
ー７が設けられている。ケース１の下部は、仕切部材１
２により二股に分かれていて、一方は原料５中の非磁性
体である主原料８を排出する非磁性体排出口９であり、
他方は原料５中の磁性体異物１０を排出する磁性体異物
排出口である。２６は磁性ドラム２の表面層２８に吸着
された磁性体異物１０を掻き落とすためのブラシ（ブレ
ードでもよい）である。表面層２８は、例えばＳＵＳ３
０４等のオーステナイト系ステンレス鋼などの非磁性体
で形成されるが、厚さが大きいと磁石ドラム２の表面磁
束密度が小さくなり磁性体異物の吸着力が低下するの
で、２ｍｍ以下の厚さであることが好ましい。In FIG. 1, reference numeral 1 is a case, which has a magnet drum 2 provided therein with a permanent magnet member 27 having a plurality of magnets on its surface and a surface layer 28 for protecting the surface. The surface layer 28 provided on the outer peripheral surface of the permanent magnet member 27 has an integral structure with the permanent magnet member 27, and rotates together with the permanent magnet member 27 when the magnet drum 2 rotates. A hopper 4 for receiving the raw material 5, a guide plate 6 for guiding the raw material 5 introduced into the hopper 4 downward, and a damper 7 for controlling the supply amount of the raw material 5 are provided on the upper part of the case 1. The lower part of the case 1 is the partition member 1
It is divided into two by 2 and one is a non-magnetic material discharge port 9 for discharging the main raw material 8 which is a non-magnetic material in the raw material 5,
The other is a magnetic foreign material discharge port for discharging the magnetic foreign material 10 in the raw material 5. Reference numeral 26 is a brush (which may be a blade) for scraping off the magnetic foreign matter 10 adsorbed on the surface layer 28 of the magnetic drum 2. The surface layer 28 is, for example, SUS3.
It is formed of a non-magnetic material such as austenitic stainless steel such as 04, but when the thickness is large, the surface magnetic flux density of the magnet drum 2 becomes small and the attraction force of the magnetic foreign matter decreases. Preferably there is.
【００１３】図２において、円筒状に形成された磁性部
材１４は外周部が歯車状に形成されており、凹部１４ａ
と凸部１４ｂが円周方向に沿って交互に形成されてい
る。磁性部材１４の凹部１４ａには、磁石ドラム２の接
線方向と同一の磁化方向を有する（磁石の幅方向に沿っ
て磁化されている）第一の磁石１９、１９’が設置さ
れ、磁性部材１４の凸部１４ｂには、磁石ドラム２の法
線方向と同一の磁化方向を有する（磁石の厚さ方向に沿
って磁化されている）第二の磁石２０、２０’が設置さ
れている。また、隣接する第一の磁石１９、１９’は、
同極性の磁極が対向するように配置されている。すなわ
ち、一方の第一の磁石１９は第二の磁石２０側がＳ極で
あり、他方の第一の磁石１９’も第二の磁石２０側がＳ
極となっている。さらに第二の磁石２０、２０’は、外
周側の磁極が隣接する第一の磁石の接触面の磁極と同極
性となるように配置されている。すなわち、隣接する第
一の磁石１９、１９’の接触面の磁極がＳ極であるた
め、第二の磁石２０の外周側の磁極はＳ極となってい
る。In FIG. 2, the cylindrical magnetic member 14 has an outer peripheral portion formed in a gear shape, and has a recess 14a.
And convex portions 14b are alternately formed along the circumferential direction. In the recess 14a of the magnetic member 14, the first magnets 19 and 19 'having the same magnetization direction as the tangential direction of the magnet drum 2 (magnetized along the width direction of the magnet) are installed, and the magnetic member 14 is provided. The second magnets 20, 20 ′ having the same magnetization direction as the normal direction of the magnet drum 2 (magnetized along the thickness direction of the magnet) are installed on the convex portion 14b. In addition, the adjacent first magnets 19 and 19 'are
The magnetic poles of the same polarity are arranged so as to face each other. That is, one of the first magnets 19 has the S pole on the second magnet 20 side, and the other first magnet 19 'also has the S pole on the second magnet 20 side.
It is a pole. Further, the second magnets 20 and 20 'are arranged so that the magnetic poles on the outer peripheral side have the same polarity as the magnetic poles on the contact surface of the adjacent first magnet. That is, since the magnetic poles on the contact surfaces of the adjacent first magnets 19 and 19 'are S poles, the magnetic poles on the outer peripheral side of the second magnet 20 are S poles.
【００１４】本発明においては、磁石ドラムを図２に示
すように構成することにより、第二の磁石２０、２０´
は磁性部材１４の凸部にて磁気回路を構成する（磁束線
が凸部を通る）ため、有効磁路長は大きくなり、もって
磁石動作点が高くなる。また第二の磁石２０、２０´と
第一の磁石１９、１９´との間の反発力も作用するの
で、磁石動作点の向上と相俟って高磁力を得ることが可
能となる。In the present invention, the second drum 20, 20 'is constructed by constructing the magnet drum as shown in FIG.
Since a magnetic circuit is formed by the convex portion of the magnetic member 14 (the magnetic flux lines pass through the convex portion), the effective magnetic path length becomes large, and the magnet operating point becomes high. In addition, since the repulsive force between the second magnets 20 and 20 'and the first magnets 19 and 19' also acts, it is possible to obtain a high magnetic force in combination with the improvement of the magnet operating point.
【００１５】図３に本発明の磁石ドラム２の外周面にお
ける円周方向の磁束密度分布を示す。また、従来の装置
の磁石ドラム２の非磁性ドラム３の外周面における円周
方向の磁束密度分布を図７に示す。また、特開平９−１
７３８９０号の装置における磁石ドラム２の非磁性ドラ
ム３の外周面における円周方向の磁束密度分布を図９に
示す。なお、磁石材質及び寸法等は後述の実験例と同様
である。本発明と従来例を比較すると、従来例および特
開平９−１７３８９０号の装置の磁束密度が２９０ｍＴ
および４３３ｍＴであるのに対し、本発明の磁束密度は
８３２ｍＴであり、従来の１．９〜２．９倍の高磁力を
得られることが判る。FIG. 3 shows the magnetic flux density distribution in the circumferential direction on the outer peripheral surface of the magnetic drum 2 of the present invention. FIG. 7 shows the magnetic flux density distribution in the circumferential direction on the outer peripheral surface of the non-magnetic drum 3 of the magnetic drum 2 of the conventional device. In addition, JP-A-9-1
FIG. 9 shows the magnetic flux density distribution in the circumferential direction on the outer peripheral surface of the non-magnetic drum 3 of the magnet drum 2 in the apparatus of No. 73890. The magnet material, dimensions, etc. are the same as in the experimental examples described later. Comparing the present invention with the conventional example, the magnetic flux densities of the conventional example and the device of Japanese Patent Laid-Open No. 9-173890 are 290 mT.
And 433 mT, the magnetic flux density of the present invention is 832 mT, and it can be seen that a high magnetic force that is 1.9 to 2.9 times that of the conventional one can be obtained.
【００１６】図４に磁石ドラム２の他の例を示す。この
磁石ドラム２は、非磁性板２１上に第一の磁石１９、１
９´を接着固定した磁石ユニット２４と、磁性板２２上
に第二の磁石２０、２０´を接着固定した磁石ユニット
２５とが円周方向に沿って交互に並ぶように、それぞれ
ボルト２３により磁性部材１４に固定した構造を採用し
ている。磁石ドラム２は接着固定と機械的固定を併用し
て組み立てられているので、磁力による反発力があって
も機械的に強制固定が可能なため組立性が向上し、組立
時間の短縮等によるコスト低減を図ることができる。FIG. 4 shows another example of the magnetic drum 2. The magnet drum 2 includes a first magnet 19, 1 on a non-magnetic plate 21.
The magnet unit 24 to which the 9'is adhered and fixed, and the magnet unit 25 to which the second magnets 20 and 20 'are adhered and fixed on the magnetic plate 22 are alternately magnetized by the bolts 23 so as to be arranged alternately along the circumferential direction. The structure fixed to the member 14 is adopted. Since the magnetic drum 2 is assembled by using both adhesive fixing and mechanical fixing, it is possible to mechanically forcibly fix even if there is a repulsive force due to the magnetic force, which improves the assemblability and reduces the cost for assembling time. It can be reduced.
【００１７】磁石ドラム２の表面層２８に吸着された磁
性体異物１０は、ブラシ（またはブレード）２６により
掻き落とされ、磁性体異物排出口１３に落下し回収され
る。本発明における磁性体選別回収装置では、大きい粒
径の磁性体異物や強磁性体異物を投入した場合、選別さ
れた磁性体異物が磁石ドラムの表面層に強固に吸着する
ために、ブラシ（またはブレード）による回収は困難と
なる。また、投入された磁性体異物が磁石ドラムの表面
層に吸着される際の衝撃により磁石が破損することもあ
る。従って、本発明における磁性体選別回収装置の選別
対象となる磁性体異物は、粒径０．１ｍｍ程度の極微小
磁性体異物および弱磁性体異物である。The magnetic foreign matter 10 adsorbed on the surface layer 28 of the magnet drum 2 is scraped off by a brush (or blade) 26 and dropped into the magnetic foreign matter discharge port 13 to be collected. In the magnetic material sorting and collecting apparatus according to the present invention, when a magnetic foreign material or a ferromagnetic foreign material having a large particle diameter is charged, the selected magnetic foreign material is strongly adsorbed on the surface layer of the magnet drum. It will be difficult to collect with a blade. Further, the magnet may be damaged by the impact when the charged magnetic foreign matter is attracted to the surface layer of the magnet drum. Therefore, the magnetic foreign substances to be sorted by the magnetic substance sorting and collecting apparatus according to the present invention are ultrafine magnetic foreign substances and weak magnetic foreign substances having a particle diameter of about 0.1 mm.
【００１８】また、本発明における磁性体選別回収装置
では、磁石ドラムの回転数が遅いほどより確実に磁性体
異物の選別回収が行なわれる。すなわち、必要な処理能
力に応じて磁石ドラムの回転数を変化させればよい。回
転数可変モータ等を使用し、磁石ドラムの回転数を無段
階で制御することも可能である。さらに、原料の投入速
度を小さくした方が磁性体異物をより確実に選別回収で
きる。フィーダ等を使用して原料の投入速度を一定にす
ることも効果的である。Further, in the magnetic material sorting / collecting device of the present invention, the slower the rotational speed of the magnet drum, the more reliably the magnetic foreign material is sorted and collected. That is, the rotational speed of the magnet drum may be changed according to the required processing capacity. It is also possible to control the number of rotations of the magnet drum in a stepless manner by using a rotation number variable motor or the like. Further, the smaller the feeding speed of the raw materials, the more reliably the magnetic foreign matter can be sorted and collected. It is also effective to use a feeder or the like to keep the feeding rate of the raw materials constant.
【００１９】（実施例）図１に示す本発明に係る磁石ド
ラム（図４）を採用した装置と、図５に示す従来の磁石
ドラム（図６）を採用した装置をそれぞれ製作し、これ
らの装置を用いて原料中に混在した磁性金属異物の回収
率を測定した。装置の構成はいずれも同様とし、主要寸
法および材質は以下のとおりである。
ケース高さ：７５０ｍｍ
ケース幅 ：４７５ｍｍ（シャフト方向）
ケース長さ：３８０ｍｍ
ケース材質：ＳＳ４００
磁石ドラム回転数：２０ｒｐｍ（５０Hz）
原料投入速度：５０ｋｇ／ｈ
磁石ドラム磁極数：１８極
磁石材質：Ｎｄ−Ｆｅ−Ｂ系希土類磁石（日立金属製Ｈ
Ｓ−４０ＡＨ）(Embodiment) An apparatus using the magnet drum (FIG. 4) according to the present invention shown in FIG. 1 and an apparatus adopting the conventional magnet drum (FIG. 6) shown in FIG. 5 were manufactured, respectively. The recovery rate of the magnetic metallic foreign matter mixed in the raw material was measured using the apparatus. The configuration of the device is the same, and the main dimensions and materials are as follows. Case height: 750 mm Case width: 475 mm (shaft direction) Case length: 380 mm Case material: SS400 Magnet drum rotation speed: 20 rpm (50 Hz) Raw material charging speed: 50 kg / h Magnet drum magnetic pole number: 18 pole Magnet material: Nd- Fe-B rare earth magnet (Hitachi Metals H
S-40AH)
【００２０】概略形状外径５ｍｍ×高さ１０ｍｍの樹脂
ペレット５０００ｃｍ3中に、平均粒径０．１ｍｍの球
状弱磁性体１０００ｇを混合させたものを処理物として
使用し、装置上端のホッパーより処理物を供給させ繰り
返し試験を行なった。その結果を表１に示す。Approximate shape: A resin pellet (5000 cm 3 having an outer diameter of 5 mm and a height of 10 mm) mixed with 1000 g of a spherical weak magnetic material having an average particle diameter of 0.1 mm was used as a treated material and treated from a hopper at the upper end of the apparatus. The material was supplied and the test was repeated. The results are shown in Table 1.
【００２１】[0021]
【表１】 [Table 1]
【００２２】表１より、従来の磁石ドラムを採用した装
置では平均回収率が８８．７％であるのに対し、本発明
に係る磁石ドラムを採用した装置では平均回収率が９
９．８％となっている。従って、本発明に係る磁石ドラ
ムを採用した装置は、従来の磁石ドラムを備えたものよ
りも原料中に混在する極微小磁性体異物および弱磁性体
異物の選別回収をより確実に行なうことができることが
明らかである。From Table 1, it can be seen that the device using the conventional magnet drum has an average recovery rate of 88.7%, while the device using the magnet drum according to the present invention has an average recovery rate of 9%.
It is 9.8%. Therefore, the apparatus employing the magnet drum according to the present invention can more reliably perform the selective collection of the extremely minute magnetic substance foreign matter and the weak magnetic substance foreign substance mixed in the raw material, as compared with the device provided with the conventional magnet drum. Is clear.
【００２３】[0023]
【発明の効果】本発明は上記のような構成および作用を
有しているので、従来公知のドラム型磁性体選別回収装
置における問題点を解決し、特に原料中に混在する極微
小磁性体異物を精度良く確実に選別回収することができ
る。Since the present invention has the above-described structure and operation, it solves the problems in the conventionally known drum type magnetic material sorting and collecting apparatus, and in particular, extremely minute magnetic material foreign substances mixed in the raw material. Can be accurately and reliably sorted and collected.
【図１】本発明装置の要部断面図である。FIG. 1 is a sectional view of an essential part of a device of the present invention.
【図２】本発明の一実施例に係る装置の磁石ドラムの１
／４断面を示す図である。FIG. 2 is a magnetic drum 1 of a device according to an embodiment of the present invention.
It is a figure which shows a / 4 cross section.
【図３】図１の磁石ドラムの外周面における円周方向の
磁束密度分布である。3 is a circumferential magnetic flux density distribution on the outer peripheral surface of the magnet drum of FIG. 1. FIG.
【図４】本発明の他の実施例に係る装置の磁石ドラムの
１／４断面を示す図である。FIG. 4 is a diagram showing a quarter section of a magnet drum of an apparatus according to another embodiment of the present invention.
【図５】従来の装置の要部断面図である。FIG. 5 is a cross-sectional view of a main part of a conventional device.
【図６】従来の磁石ドラムの構造を示す図である。FIG. 6 is a diagram showing a structure of a conventional magnet drum.
【図７】図６の磁石ドラムの非磁性ドラムの外周面にお
ける円周方向の磁束密度分布である。7 is a magnetic flux density distribution in the circumferential direction on the outer peripheral surface of the non-magnetic drum of the magnetic drum of FIG.
【図８】特開平９−１７３８９０号の装置の磁石ドラム
の１／４断面を示す図である。FIG. 8 is a view showing a quarter section of a magnet drum of the device of Japanese Patent Laid-Open No. 9-173890.
【図９】図８の磁石ドラムの非磁性ドラムの外周面にお
ける円周方向の磁束密度分布である。9 is a magnetic flux density distribution in the circumferential direction on the outer peripheral surface of the non-magnetic drum of the magnetic drum of FIG.
１…ケース、２…磁石ドラム、３…非磁性ドラム、４…
ホッパー、５…原料、６…案内板、７…ダンパー、８…
主原料、９…非磁性体排出口、１０…磁性体異物、１１
…スクレーパ、１２…仕切部材、１３…磁性体異物排出
口、１４…磁性部材、１４ａ…凹部、１４ｂ…凸部、１
５、１６…永久磁石、１７…アーム、１８…シャフト、
１９、１９´…第一の磁石、２０、２０´…第二の磁
石、２１…非磁性板、２２…磁性板、２３…ボルト、２
４、２５…磁石ユニット、２６…ブラシ（ブレード）、
２７…永久磁石部材、２８…表面層1 ... Case, 2 ... Magnet drum, 3 ... Non-magnetic drum, 4 ...
Hopper, 5 ... Raw material, 6 ... Guide plate, 7 ... Damper, 8 ...
Main raw material, 9 ... Non-magnetic material discharge port, 10 ... Magnetic material foreign matter, 11
... scraper, 12 ... partition member, 13 ... magnetic substance foreign matter discharge port, 14 ... magnetic member, 14a ... concave portion, 14b ... convex portion, 1
5, 16 ... Permanent magnet, 17 ... Arm, 18 ... Shaft,
19, 19 '... First magnet, 20, 20' ... Second magnet, 21 ... Non-magnetic plate, 22 ... Magnetic plate, 23 ... Bolt, 2
4, 25 ... Magnet unit, 26 ... Brush (blade),
27 ... Permanent magnet member, 28 ... Surface layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 矢野 映 神奈川県川崎市中原区上小田中４丁目１ 番１号富士通株式会社内 (72)発明者 川原 登志美 神奈川県川崎市中原区上小田中４丁目１ 番１号富士通株式会社内 (72)発明者 深澤 則雄 神奈川県川崎市中原区上小田中４丁目１ 番１号富士通株式会社内 (56)参考文献 特開 平10−380（ＪＰ，Ａ) 特開 平９−173890（ＪＰ，Ａ) 特開 平10−314619（ＪＰ，Ａ) 特開 平８−215603（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B03C 1/00 - 1/32 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ei Yano 4-1-1 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Fujitsu Limited (72) Inventor Tosumi Kawahara 4-chome, Ueodaanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture No. 1 in Fujitsu Limited (72) Inventor Norio Fukasawa 4-1-1 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Within Fujitsu Limited (56) Reference JP-A-10-380 (JP, A) Hei 9-173890 (JP, A) JP 10-314619 (JP, A) JP 8-215603 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) B03C 1 / 00-1/32
Claims (3)
設置された、外周面に複数の磁石を有する永久磁石部材
を備えた円筒状磁石ドラムと、磁性体異物排出口と、非
磁性体排出口とを有するドラム型磁性体選別回収装置に
おいて、前記磁石ドラムは、永久磁石部材と、永久磁石
部材と一体構造であり、永久磁石部材外周表面に設置さ
れ、原料を受け取る表面層とを備え、永久磁石部材は、
外周部が歯車状に形成された磁性部材と、前記磁性部材
の外周凹部に設置され、前記磁石ドラムの接線方向と同
一の磁化方向を有する第一の磁石と、前記磁性部材の外
周凸部に設置され、前記磁石ドラムの法線方向と同一の
磁化方向を有する第二の磁石とを有し、前記第一の磁石
は、同極性の磁極が対向するように配置され、前記第二
の磁石は、前記磁石ドラムの外周側の磁極が、隣接する
第一の磁石の接触面の磁極と同極性となるように配置さ
れていることを特徴とする、ドラム型磁性体選別回収装
置。1. A cylindrical magnet drum provided with a raw material supply means and a permanent magnet member having a plurality of magnets on its outer peripheral surface, which is rotatably installed below the raw material supply means, a magnetic substance foreign matter discharge port, and a nonmagnetic substance. In a drum-type magnetic material sorting and collecting apparatus having a discharge port, the magnet drum includes a permanent magnet member and a surface layer that is integrated with the permanent magnet member and that is installed on the outer peripheral surface of the permanent magnet member and receives the raw material. , The permanent magnet member is
A magnetic member having an outer peripheral portion formed in the shape of a gear, a first magnet installed in the outer peripheral concave portion of the magnetic member and having the same magnetization direction as the tangential direction of the magnet drum, and an outer peripheral convex portion of the magnetic member. A second magnet that is installed and has a magnetization direction that is the same as the normal direction of the magnet drum, and the first magnet is arranged such that magnetic poles of the same polarity face each other; Is arranged so that the magnetic poles on the outer peripheral side of the magnet drum have the same polarity as the magnetic poles of the contact surface of the adjacent first magnet.
接着固定された磁石ユニットと、第二の磁石の内周側磁
極面に磁性板が接着固定された磁石ユニットとを有し、
両磁石ユニットは円周方向に沿って交互に、かつ少なく
とも機械的に前記磁性部材に固定されていることを特徴
とする請求項１記載のドラム型磁性体選別回収装置。2. A magnet unit having a non-magnetic plate adhered and fixed to an inner peripheral magnetic pole surface of a first magnet, and a magnet unit having a magnetic plate adhered and fixed to an inner peripheral magnetic pole surface of a second magnet. Have,
The drum type magnetic material sorting and collecting apparatus according to claim 1, wherein the two magnet units are alternately and mechanically fixed to the magnetic member along the circumferential direction.
掻き落とすためのブラシ、またはブレードを有すること
を特徴とする請求項１記載のドラム型磁性体選別回収装
置。3. The drum type magnetic material sorting and collecting apparatus according to claim 1, further comprising a brush or a blade for scraping off the magnetic foreign material attached to the magnetic drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37563698A JP3441390B2 (en) | 1998-12-16 | 1998-12-16 | Drum type magnetic material sorting and collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37563698A JP3441390B2 (en) | 1998-12-16 | 1998-12-16 | Drum type magnetic material sorting and collecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000176307A JP2000176307A (en) | 2000-06-27 |
| JP3441390B2 true JP3441390B2 (en) | 2003-09-02 |
Family
ID=18505826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37563698A Expired - Fee Related JP3441390B2 (en) | 1998-12-16 | 1998-12-16 | Drum type magnetic material sorting and collecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3441390B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586320A (en) * | 2018-06-12 | 2019-12-20 | 株式会社则武 | Magnetic separator |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4948514B2 (en) * | 2007-12-28 | 2012-06-06 | 住友重機械ファインテック株式会社 | Rotating drum type magnetic separator |
| JP4785913B2 (en) * | 2007-12-28 | 2011-10-05 | 住友重機械ファインテック株式会社 | Rotating drum type magnetic separator |
| JP5996285B2 (en) * | 2012-06-08 | 2016-09-21 | 株式会社Cnk | Rotating drum type magnetic separation device and its assembling method |
| CN103769296A (en) * | 2012-10-19 | 2014-05-07 | 财团法人金属工业研究发展中心 | Roller apparatus with built-in magnetic parts, and magnetic mandrel thereof |
| JP6220624B2 (en) * | 2013-10-10 | 2017-10-25 | 株式会社Cnk | Rotating drum type magnetic separator |
| JP6774734B2 (en) * | 2014-10-01 | 2020-10-28 | 住友重機械ファインテック株式会社 | Rotating drum type magnetic separation device |
| CN105268547B (en) * | 2015-11-06 | 2017-05-24 | 长沙矿冶研究院有限责任公司 | Wet permanent magnetic roll type high magnetic separator |
| AT518730B1 (en) * | 2016-06-08 | 2019-03-15 | Univ Graz Tech | Device for separating particles of different conductivity |
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1998
- 1998-12-16 JP JP37563698A patent/JP3441390B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586320A (en) * | 2018-06-12 | 2019-12-20 | 株式会社则武 | Magnetic separator |
| CN110586320B (en) * | 2018-06-12 | 2020-06-19 | 株式会社则武 | Magnetic separator |
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| Publication number | Publication date |
|---|---|
| JP2000176307A (en) | 2000-06-27 |
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