JPH0994482A - Discharge type electrostatic sorter - Google Patents

Discharge type electrostatic sorter

Info

Publication number
JPH0994482A
JPH0994482A JP25477495A JP25477495A JPH0994482A JP H0994482 A JPH0994482 A JP H0994482A JP 25477495 A JP25477495 A JP 25477495A JP 25477495 A JP25477495 A JP 25477495A JP H0994482 A JPH0994482 A JP H0994482A
Authority
JP
Japan
Prior art keywords
electrode
voltage
metal drum
sorted
drum electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP25477495A
Other languages
Japanese (ja)
Other versions
JP3226446B2 (en
Inventor
Hiroshige Arai
浩成 荒井
Hidehiko Maehata
英彦 前畑
Takeshi Kato
剛 加藤
Chiaki Tojo
千明 東條
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP25477495A priority Critical patent/JP3226446B2/en
Publication of JPH0994482A publication Critical patent/JPH0994482A/en
Application granted granted Critical
Publication of JP3226446B2 publication Critical patent/JP3226446B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To make it possible to improve the recovery rate and purity of plastics by specifying the voltage to be impressed on a high-voltage electrode at the time of sorting plastics which are insulating pulverized refuse. SOLUTION: The pulverized refuse 13 which is to be sorted, is fed from a vibration feeding plate 14 and is sprayed onto a metallic drum electrode 12 receives polarization and electron radiation in the discharge formed between a high-voltage electrode 11 and the metallic drum electrode 12. Namely, unipolar ions are released from the high-voltage electrode 11 and fall onto the pulverized refuse 13 to be sorted on the metallic drum electrode 12. The refuse 13 is electrified to the same pole as the pole of the ions. The conductive pulverized refuse 13A is separated and jumped from the grounded metallic drum electrode 12 and falls onto a forward first separating container 16. The insulating pulverized refuse 13B is strongly attracted by the grounded metallic electrode 12, is dropped in a backward position and is separated into a second separating container 17. The impressed voltage is, thereupon, obtd. from the equation defining the voltage impressed on the high-voltage electrode as VP and the distance between the high-voltage electrode and the metallic drum electrode as L.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、都市ゴミ、粗大ゴ
ミなどを粉砕した後、この粉砕したゴミの中から特にプ
ラスチックの選別を行う放電型静電選別装置に関するも
のである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric discharge type electrostatic sorting apparatus for crushing municipal waste, coarse dust, etc., and then selecting plastics from the crushed waste.

【0002】[0002]

【従来の技術】コロナ放電による選別方法を使用した、
従来の放電型静電選別装置を図4にしたがって説明す
る。
2. Description of the Related Art A sorting method using corona discharge is used.
A conventional discharge type electrostatic sorting device will be described with reference to FIG.

【0003】被選別粒子1はホッパ2へ投入され、ホッ
パ2の出口から振動給送板3上へ落下し、この振動給送
板3より切り出され、水平軸心周りに所定方向に回転さ
れ、接地されている金属ドラム電極4の上面へ散布され
る。
Particles 1 to be sorted are put into a hopper 2, dropped from an outlet of the hopper 2 onto a vibrating feed plate 3, cut out from the vibrating feed plate 3, and rotated in a predetermined direction around a horizontal axis, It is sprayed on the upper surface of the metal drum electrode 4 which is grounded.

【0004】金属ドラム電極4の回転方向斜め上方に
は、粒子1へ放電する針状の高電圧電極5が設けられて
おり、この高電圧電極5には高圧電源装置6の陰極が接
続されている。また高圧電源装置6の陽極は接地されて
いる。この接続によって、金属ドラム電極4により回転
接地電極が形成され、高電圧電極5と金属ドラム電極4
との間にコロナ放電界が形成される。
A needle-shaped high voltage electrode 5 for discharging to the particles 1 is provided diagonally above the metal drum electrode 4 in the rotation direction. The high voltage electrode 5 is connected to a cathode of a high voltage power supply 6. I have. The anode of the high voltage power supply 6 is grounded. With this connection, a rotating ground electrode is formed by the metal drum electrode 4, and the high-voltage electrode 5 and the metal drum electrode 4
And a corona discharge field is formed between them.

【0005】また金属ドラム電極4の下方には、金属ド
ラム電極4の前方位置(回転方向上流側)に上方へ開口
した第1分離容器7が設けられ、金属ドラム電極4の径
の前半分位置に上方へ開口した第2分離容器8が設けら
れ、さらに金属ドラム電極4の径の後半分位置に上方へ
開口した第3分離容器9が設けられている。また、金属
ドラム電極4の回転方向の下流位置(第3分離容器9の
上方位置)には被選別粒子1をかき落とすブラシ10が設
けられている。
Below the metal drum electrode 4, a first separation container 7 is provided which opens upward at a position forward (upstream in the rotation direction) of the metal drum electrode 4, and is located at the front half of the diameter of the metal drum electrode 4. Is provided with a second separation container 8 which is open upward, and a third separation container 9 which is open upward is provided at a rear half position of the diameter of the metal drum electrode 4. Further, a brush 10 for scraping off the particles 1 to be sorted is provided at a downstream position in the rotation direction of the metal drum electrode 4 (above the third separation container 9).

【0006】上記構成による作用を説明する。ホッパ1
より振動給送板3を介して金属ドラム電極4上に散布さ
れた被選別粒子1は、高電圧電極5と金属ドラム電極4
間に形成される放電界中で、分極ならびに電子放射を受
ける。すなわち、高電圧電極5から単極性イオンが放出
され、ドラム4上の被選別粒子1にふりそそぎ、粒子1
はイオンと同極に帯電される。
The operation of the above configuration will be described. Hopper 1
The selected particles 1 spread on the metal drum electrode 4 via the vibration feed plate 3 are further divided into the high voltage electrode 5 and the metal drum electrode 4.
Polarization and electron radiation are received in the discharge field formed between them. That is, unipolar ions are emitted from the high voltage electrode 5, and the particles 1 to be sorted are sprayed on the drum 4 and the particles 1
Are charged to the same polarity as the ions.

【0007】帯電した被選別粒子1が導電性粒子(導
体)1Aの場合には、コロナ放電による電荷は接地電極
(金属ドラム電極4)からの反対電荷とたちまち中和
し、逆に接地電極から電荷が与えられるため、反発力と
なって接地電極から分離跳躍し、前方の第1分離容器7
内に落下する。
In the case where the charged particles to be sorted 1 are conductive particles (conductors) 1A, the charge due to corona discharge is immediately neutralized with the opposite charge from the ground electrode (metal drum electrode 4), and conversely from the ground electrode. Since the electric charge is applied, the repulsive force separates and jumps from the ground electrode, and the first separation container
Fall into.

【0008】また被選別粒子1が絶縁性粒子(絶縁体)
1Bの場合には、接地電極(金属ドラム電極4)からの
電荷補給がないため、電子放射により与えられた電界に
より接地電極に吸引力として働き、さらに分極の吸引力
と総合され、接地電極に強く吸着される。したがって、
絶縁性粒子1Bは金属ドラム電極4の回転方向の後方位
置で落下するか、ブラシ10によりかき落とされて、第3
分離容器9内に分離される。
The particles 1 to be selected are insulating particles (insulators).
In the case of 1B, since there is no charge replenishment from the ground electrode (metal drum electrode 4), it acts as an attractive force on the ground electrode by the electric field given by the electron emission, and is further integrated with the attractive force of the polarization, and is applied to the ground electrode. Strongly adsorbed. Therefore,
The insulating particles 1 </ b> B drop at a position behind the metal drum electrode 4 in the rotation direction or are scraped off by the brush 10 to form a third
Separated in the separation container 9.

【0009】また被選別粒子1が半導電性粒子(半導
体)1Cの場合には、絶縁性粒子1Bと導電性粒子1A
の中間位置に落下し、第2分離容器8内に分離される。
When the selected particles 1 are semiconductive particles (semiconductors) 1C, the insulating particles 1B and the conductive particles 1A
And is separated into the second separation container 8.

【0010】[0010]

【発明が解決しようとする課題】しかし、上記従来のコ
ロナ放電を使用した静電選別装置では、被選別粒子1が
絶縁性粒子1Bであるプラスチックの場合、選別能力が
よくなく、回収率および純度が必ずしも良好ではないと
いう問題があった。
However, in the conventional electrostatic sorting apparatus using corona discharge described above, when the particles 1 to be sorted are plastics having the insulating particles 1B, the sorting ability is not good and the recovery rate and the purity are high. There is a problem that is not necessarily good.

【0011】またプラスチックの再生(廃プラ油精製な
ど)が注目されており、プラスチックの回収率および純
度の高い選別装置が望まれている。そこで、本発明は、
プラスチックの回収率および純度を向上させた放電型静
電選別装置を提供することを目的としたものである。
Further, attention is paid to the recycling of plastics (refining of waste plastic oil, etc.), and a sorting apparatus having a high recovery rate and a high purity of plastics is desired. Therefore, the present invention is
It is an object of the present invention to provide a discharge type electrostatic sorting apparatus with improved recovery rate and purity of plastic.

【0012】[0012]

【課題を解決するための手段】前述した目的を達成する
ために、本発明のうち請求項1記載の放電型静電選別装
置は、針状または刃状の高電圧電極と水平軸心回りに回
転する接地された金属ドラム電極間に、放電を発生さ
せ、前記金属ドラム電極上に被選別粉砕ゴミを落下また
は載せ、放電領域を通過させることにより、帯電させ、
前記被選別粉砕ゴミが導電性粉砕ゴミの場合には、金属
ドラム電極から分離跳躍し、前記被選別粉砕ゴミが絶縁
性粉砕ゴミの場合には、金属ドラム電極に吸着すること
により、被選別粉砕ゴミを放電選別を行う放電型静電選
別装置であって、前記絶縁性粉砕ゴミであるプラスチッ
クを選別するとき、前記高電圧電極に印加される電圧V
p (kV)を、前記高電圧電極と金属ドラム電極間の距離
をL(cm)とすると、 Vp ≧0.5(kV/cm )・L とすることを特徴とするものである。
In order to achieve the above-mentioned object, a discharge type electrostatic sorting apparatus according to claim 1 of the present invention is a needle-shaped or blade-shaped high voltage electrode and a horizontal axis center. Between rotating grounded metal drum electrodes, a discharge is generated, and crushed dust to be sorted is dropped or placed on the metal drum electrodes and passed through a discharge area to be charged,
If the crushed dust to be sorted is conductive crushed dust, it levitates from the metal drum electrode, and if the crushed dust to be sorted is insulating crushed dust, it is adsorbed on the metal drum electrode to crush and sort A discharge-type electrostatic sorting device for sorting dust by discharge, wherein a voltage V applied to the high-voltage electrode when sorting the insulating crushed dust plastic
When p (kV) is the distance between the high voltage electrode and the metal drum electrode is L (cm), V p ≧ 0.5 (kV / cm 2) · L.

【0013】上記構成により、高電圧電極に印加される
電圧Vp を上記式により算定される電圧とすることによ
り、プラスチックが放電現象を利用して選別される。ま
た請求項2記載の放電型静電選別装置は、上記請求項1
記載の放電型静電選別装置であって、高電圧電極に印加
される電圧Vp を0.5〜6kVとすることを特徴とする
ものである。
With the above structure, by setting the voltage V p applied to the high voltage electrode to the voltage calculated by the above equation, the plastic is selected by utilizing the discharge phenomenon. The discharge type electrostatic sorting apparatus according to claim 2 is the above-mentioned claim 1.
The discharge type electrostatic sorting device described is characterized in that the voltage V p applied to the high voltage electrode is set to 0.5 to 6 kV.

【0014】上記構成により、高電圧電極に印加される
電圧Vp を0.5〜6kVとすることでプラスチックが所
定の回収率、および回収純度で選別される。
With the above structure, by setting the voltage V p applied to the high-voltage electrode to 0.5 to 6 kV, the plastic is selected with a predetermined recovery rate and recovery purity.

【0015】[0015]

【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図1に本発明の実施の形態を示す
放電型静電選別装置の基本構成図を示す。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a basic configuration diagram of a discharge type electrostatic sorting apparatus showing an embodiment of the present invention.

【0016】高電圧が印加される針状もしくは刃状の電
極(以下、高電圧電極と称す)11を下向きに設け、この
高電圧電極11の下方に接地された金属ドラム電極12を設
けている。この金属ドラム電極12は、高電圧電極11の真
下を回転中心とし水平軸心回りに矢印aの方向へ回転し
ている。
A needle-shaped or blade-shaped electrode (hereinafter referred to as a high voltage electrode) 11 to which a high voltage is applied is provided downward, and a grounded metal drum electrode 12 is provided below the high voltage electrode 11. . The metal drum electrode 12 rotates in the direction of arrow a around the horizontal axis centering right below the high voltage electrode 11 as the center of rotation.

【0017】被選別粉砕ゴミ13は、振動給送板14から切
り出され、金属ドラム電極12上に散布される。また、金
属ドラム電極12の後方位置(回転方法下流側)には、金
属ドラム電極12に吸着した被選別粉砕ゴミ13をかき落と
すブラシ15が設けられている。
The crushed dust 13 to be sorted is cut out from the vibration feeding plate 14 and scattered on the metal drum electrode 12. In addition, a brush 15 for scraping off the sorted crushed dust 13 adsorbed on the metal drum electrode 12 is provided at the rear position of the metal drum electrode 12 (downstream of the rotating method).

【0018】また金属ドラム電極12の下方には、金属ド
ラム電極12の径の前方位置(回転方向上流側)に上方に
開口した第1分離容器16が設けられ、金属ドラム電極12
の径位置(ブラシ15の下方位置)に上方に開口した第2
分離容器17が設けられている。
Below the metal drum electrode 12, there is provided a first separation container 16 which opens upward at a position forward of the diameter of the metal drum electrode 12 (on the upstream side in the rotational direction).
2nd opening upwards at the radial position (the position below the brush 15)
A separation container 17 is provided.

【0019】以下、上記構成における作用を説明する。
振動給送板14から切り出され、金属ドラム電極12上に散
布された被選別粉砕ゴミ13は、高電圧電極11と金属ドラ
ム電極12間に形成される放電界中で、分極ならびに電子
放射を受ける。すなわち、高電圧電極11から単極性イオ
ンが放出され、金属ドラム電極12上の被選別粉砕ゴミ13
にふりそそぎ、ゴミ13はイオンと同極に帯電される。
The operation of the above configuration will be described below.
The crushed dust 13 to be sorted, which is cut out from the vibration feeding plate 14 and scattered on the metal drum electrode 12, receives polarization and electron emission in the discharge field formed between the high voltage electrode 11 and the metal drum electrode 12. . That is, unipolar ions are emitted from the high voltage electrode 11, and the crushed dust 13 to be sorted on the metal drum electrode 12 is discharged.
The dust 13 is charged to the same polarity as the ions.

【0020】帯電した被選別粉砕ゴミ13が導電性粉砕ゴ
ミ(または半導電性粉砕ゴミ)13Aの場合には、コロナ
放電による電荷は接地金属ドラム電極12からの反対電荷
と中和し、逆に接地金属ドラム電極12から電荷が与えら
れるため、反発力となって接地金属ドラム電極12から分
離跳躍し、前方の第1分離容器16内に落下する。
When the charged crushed dust 13 to be sorted is conductive crushed dust (or semi-conductive crushed dust) 13A, the charge due to corona discharge is neutralized with the opposite charge from the ground metal drum electrode 12, and conversely. Since the electric charge is applied from the grounded metal drum electrode 12, it acts as a repulsive force and jumps off from the grounded metal drum electrode 12 and drops into the front first separation container 16.

【0021】また被選別粉砕ゴミ13が絶縁性粒子(絶縁
体)13Bの場合には、接地金属ドラム電極12からの電荷
補給がないため、電子放射により与えられた電界により
接地金属ドラム電極12に吸引力として働き、さらに分極
の吸引力と総合され、接地金属ドラム電極12に強く吸着
される。したがって、絶縁性粉砕ゴミ13Bは金属ドラム
電極12の回転方向の後方位置で落下するか、ブラシ15に
よりかき落とされて、第2分離容器17内に分離される。
When the crushed dust 13 to be sorted is the insulating particles (insulator) 13B, there is no charge replenishment from the ground metal drum electrode 12, so that the ground metal drum electrode 12 is applied to the ground metal drum electrode 12 by the electric field given by electron emission. It acts as an attractive force, and is combined with the attractive force of polarization to be strongly attracted to the ground metal drum electrode 12. Therefore, the insulating crushed dust 13B is dropped at a rear position in the rotation direction of the metal drum electrode 12 or scraped off by the brush 15 and separated into the second separation container 17.

【0022】上記作用により、絶縁性粉砕ゴミ13Bを第
2分離容器17内に、導電性粉砕ゴミ13Aを第1分離容器
16内に選別することができる。上記装置において、高電
圧電極11〜金属ドラム電極12間の電圧を変化させたとき
の放電電流値の関係を図2に示す。縦軸が放電電流I
(mA)を示し、横軸が印加電圧Vp (kV)と、印加電圧
p を高電圧電極11〜金属ドラム電極12間の距離L(c
m)で除算した平均電界強度E* (kV/cm )を示してい
る。
By the above operation, the insulating crushed dust 13B is placed in the second separating container 17, and the conductive crushed dust 13A is placed in the first separating container.
Can be sorted within 16 FIG. 2 shows the relationship between discharge current values when the voltage between the high voltage electrode 11 and the metal drum electrode 12 is changed in the above device. Vertical axis is discharge current I
(MA), the horizontal axis represents the applied voltage V p (kV) and the applied voltage V p is the distance L (c between the high voltage electrode 11 and the metal drum electrode 12).
The average electric field strength E * (kV / cm) divided by m) is shown.

【0023】図2によれば、平均電界強度E* が0〜1
(kV/cm )から電流が流れ始め、この時点から放電が起
っているといえる。次に、被選別粉砕ゴミ13のサンプル
により、絶縁性粉砕ゴミ13Bであるプラスチック選別を
行ったときの回収率と純度の関係を図3に示す。横軸が
平均電界強度E* (kV/cm )を示し、縦軸がプラスチッ
クの回収率η(%)と純度ηp (%)を示す。
According to FIG. 2, the average electric field strength E * is 0 to 1
It can be said that the current started to flow from (kV / cm 2), and the discharge started from this point. Next, FIG. 3 shows the relationship between the recovery rate and the purity when the plastic crushed dust 13B is selected from the sample of the crushed dust 13 to be sorted. The horizontal axis represents the average electric field strength E * (kV / cm 2), and the vertical axis represents the plastic recovery rate η (%) and the purity η p (%).

【0024】上記回収率ηと純度ηp は、選別回収した
プラスチック重量を(kg)、選別前のプラスチック含有
重量をe(kg)、選別後のプラスチック全重量f(kg)
とすると、下記(1)式により演算して求めている。
The recovery rate η and the purity η p are the weight of the sorted and recovered plastic (kg), the weight of the plastic content before the sorting is e (kg), and the total weight of the plastic after the sorting f (kg).
Then, it is calculated by the following formula (1).

【0025】 η=d/e (%) ηp =d/f (%) …(1) 図3によれば、回収、すなわちプラスチックの選別が可
能となる平均電界強度E* は放電電流が発生するのと同
じく0.5(kV/cm )以上であり、5〜6(kV/cm )が
最適であることがわかる。また平均電界強度E* が選別
可能な0.5〜6(kV/cm )であれば、純度ηp (%)
は平均電界強度E* に関係なく、ほぼ90%である。
Η = d / e (%) η p = d / f (%) (1) According to FIG. 3, a discharge current is generated as the average electric field strength E * that enables recovery, that is, sorting of plastics. As with the above, it is 0.5 (kV / cm 2) or more, and 5 to 6 (kV / cm 2) is optimum. If the average electric field strength E * is 0.5 to 6 (kV / cm 2) that can be selected, the purity η p (%)
Is almost 90% regardless of the average electric field strength E * .

【0026】以上から、本発明の放電型静電選別装置に
おいて、選別を可能とするための印加電圧Vp は下記
(2)式の通りとなる。 Vp ≧K・L …(2) ただし、K=0.5(kV/cm )である。
From the above, in the discharge type electrostatic sorting apparatus of the present invention, the applied voltage V p for enabling sorting is given by the following equation (2). V p ≧ K · L (2) However, K = 0.5 (kV / cm 2).

【0027】この(2)式により求めた印加電圧Vp
高電圧電極11に印加することにより、プラスチックを選
別することができる。また、平均電界強度E* を5〜6
(kV/cm )とすることにより、プラスチックの回収率η
を80(%)以上とすることができ、プラスチックを効
率よく選別することができる。
By applying the applied voltage V p obtained by the equation (2) to the high voltage electrode 11, the plastic can be selected. In addition, the average electric field strength E * is 5 to 6
(KV / cm 2), the plastic recovery rate η
Can be 80% or more, and the plastics can be efficiently selected.

【0028】[0028]

【発明の効果】以上述べたように請求項1記載の発明に
よれば、高電圧電極に印加される電圧Vp を上記(2)
式により算定される電圧とすることにより、プラスチッ
クを放電現象を利用して選別することができ、選別のラ
イン化が可能となり、効率よい選別が可能となる。
As described above, according to the first aspect of the invention, the voltage V p applied to the high voltage electrode is set to the above (2).
By setting the voltage calculated by the formula, it is possible to sort the plastics by utilizing the discharge phenomenon, and it becomes possible to make the sorting line, and the efficient sorting becomes possible.

【0029】また請求項2記載の発明によれば、高電圧
電極に印加される電圧Vp を0.5〜6kVとすることに
より、プラスチックを所定の回収率、および回収純度で
得ることができる。
According to the second aspect of the invention, the plastic can be obtained at a predetermined recovery rate and recovery purity by setting the voltage V p applied to the high voltage electrode to 0.5 to 6 kV. .

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施の形態を示す放電型静電選別装置
の基本構成図である。
FIG. 1 is a basic configuration diagram of a discharge type electrostatic sorting device showing an embodiment of the present invention.

【図2】同放電型静電選別装置の高電圧電極印加電圧お
よび平均電界強度と放電電流の特性図である。
FIG. 2 is a characteristic diagram of a voltage applied to a high voltage electrode, an average electric field strength, and a discharge current of the discharge type electrostatic sorting device.

【図3】同放電型静電選別装置の平均電界強度とプラス
チック回収率および純度の特性図である。
FIG. 3 is a characteristic diagram of average electric field strength, plastic recovery rate, and purity of the same discharge type electrostatic sorting device.

【図4】従来の放電型静電選別装置の構成図である。FIG. 4 is a configuration diagram of a conventional discharge type electrostatic sorting device.

【符号の説明】[Explanation of symbols]

11 高電圧電極 12 接地金属ドラム電極 13 被選別粉砕ゴミ 13A 導電性粉砕ゴミ 13B 絶縁性粉砕ゴミ(プラスチック) 14 振動給送板 15 ブラシ 16 第1分離容器 17 第2分離容器 11 High-voltage electrode 12 Grounded metal drum electrode 13 Sorted crushed dust 13A Conductive crushed dust 13B Insulated crushed dust (plastic) 14 Vibration feed plate 15 Brush 16 First separation container 17 Second separation container

フロントページの続き (72)発明者 東條 千明 大阪府大阪市此花区西九条5丁目3番28号 日立造船株式会社内Front Page Continuation (72) Inventor Chiaki Tojo 5-3-2, Nishikujo 5-chome, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 針状または刃状の高電圧電極と水平軸心
回りに回転する接地された金属ドラム電極間に、放電を
発生させ、前記金属ドラム電極上に被選別粉砕ゴミを落
下または載せ、放電領域を通過させることにより、帯電
させ、前記被選別粉砕ゴミが導電性粉砕ゴミの場合に
は、金属ドラム電極から分離跳躍し、前記被選別粉砕ゴ
ミが絶縁性粉砕ゴミの場合には、金属ドラム電極に吸着
することにより、被選別粉砕ゴミの放電選別を行う放電
型静電選別装置であって、 前記絶縁性粉砕ゴミであるプラスチックを選別すると
き、前記高電圧電極に印加される電圧Vp (kV)を、前
記高電圧電極と金属ドラム電極間の距離をL(cm)とす
ると、 Vp ≧0.5(kV/cm )・L とすることを特徴とする放電型静電選別装置。
1. A discharge is generated between a needle-shaped or blade-shaped high-voltage electrode and a grounded metal drum electrode that rotates around a horizontal axis, and crushed dust to be sorted is dropped or placed on the metal drum electrode. , By passing through the discharge area, electrified, when the crushed dust to be sorted is conductive crushed dust, jumps from the metal drum electrode, and when the crushed dust to be sorted is an insulating crushed dust, A discharge type electrostatic sorting device for performing discharge sorting of crushed dust to be sorted by adsorbing to a metal drum electrode, wherein a voltage applied to the high voltage electrode when sorting the plastic which is the insulating crushed dust. V p (kV) is V p ≧ 0.5 (kV / cm) · L, where V (kV) is the distance between the high voltage electrode and the metal drum electrode, and V p (kV / cm) · L Sorter.
【請求項2】 請求項1記載の放電型静電選別装置であ
って、 高電圧電極に印加される電圧Vp を0.5〜6kVとする
ことを特徴とする。
2. The discharge type electrostatic sorting device according to claim 1, wherein the voltage V p applied to the high voltage electrode is 0.5 to 6 kV.
JP25477495A 1995-10-02 1995-10-02 Discharge type electrostatic sorter Expired - Lifetime JP3226446B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25477495A JP3226446B2 (en) 1995-10-02 1995-10-02 Discharge type electrostatic sorter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25477495A JP3226446B2 (en) 1995-10-02 1995-10-02 Discharge type electrostatic sorter

Publications (2)

Publication Number Publication Date
JPH0994482A true JPH0994482A (en) 1997-04-08
JP3226446B2 JP3226446B2 (en) 2001-11-05

Family

ID=17269703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25477495A Expired - Lifetime JP3226446B2 (en) 1995-10-02 1995-10-02 Discharge type electrostatic sorter

Country Status (1)

Country Link
JP (1) JP3226446B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000027536A1 (en) * 1998-11-05 2000-05-18 Hitachi Zosen Corporation Selector
WO2000027535A1 (en) * 1998-11-05 2000-05-18 Hitachi Zosen Corporation Triboelectrification device
WO2000027534A1 (en) * 1998-11-05 2000-05-18 Hitachi Zosen Corporation Plastic separator
WO2000029119A1 (en) * 1998-11-18 2000-05-25 Hitachi Zosen Corporation Method of separating plastic
WO2000076669A1 (en) * 1999-06-11 2000-12-21 Hitachi Zosen Corporation Method and apparatus for separating plastic
WO2001021318A1 (en) * 1999-09-20 2001-03-29 Hitachi Zosen Corporation Plastic sorter
WO2002034404A1 (en) * 2000-10-24 2002-05-02 Hitachi Zosen Corporation Composite separator
CN104907255A (en) * 2015-06-18 2015-09-16 浙江亚通焊材有限公司 Device and technology for preparing powder used for high-quality iron-based 3D printing

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000027536A1 (en) * 1998-11-05 2000-05-18 Hitachi Zosen Corporation Selector
WO2000027535A1 (en) * 1998-11-05 2000-05-18 Hitachi Zosen Corporation Triboelectrification device
WO2000027534A1 (en) * 1998-11-05 2000-05-18 Hitachi Zosen Corporation Plastic separator
US6365857B1 (en) 1998-11-05 2002-04-02 Hitachi Zosen Corporation Plastics sorting apparatus
WO2000029119A1 (en) * 1998-11-18 2000-05-25 Hitachi Zosen Corporation Method of separating plastic
US6415929B1 (en) * 1998-11-18 2002-07-09 Hitachi Zosen Corporation Method of separating plastic
WO2000076669A1 (en) * 1999-06-11 2000-12-21 Hitachi Zosen Corporation Method and apparatus for separating plastic
US6426474B1 (en) 1999-06-11 2002-07-30 Hitachi Zosen Corporation Method and apparatus for separating plastic
WO2001021318A1 (en) * 1999-09-20 2001-03-29 Hitachi Zosen Corporation Plastic sorter
WO2002034404A1 (en) * 2000-10-24 2002-05-02 Hitachi Zosen Corporation Composite separator
US6774332B2 (en) 2000-10-24 2004-08-10 Hitachi Zosen Corporation Composite separator
CN104907255A (en) * 2015-06-18 2015-09-16 浙江亚通焊材有限公司 Device and technology for preparing powder used for high-quality iron-based 3D printing

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