JPS6349266A - Screening device for magnetic material - Google Patents
Screening device for magnetic materialInfo
- Publication number
- JPS6349266A JPS6349266A JP61193787A JP19378786A JPS6349266A JP S6349266 A JPS6349266 A JP S6349266A JP 61193787 A JP61193787 A JP 61193787A JP 19378786 A JP19378786 A JP 19378786A JP S6349266 A JPS6349266 A JP S6349266A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- belt
- magnetic separator
- materials
- 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.)
- Pending
Links
- 239000000696 magnetic material Substances 0.000 title claims abstract description 14
- 238000012216 screening Methods 0.000 title 1
- 230000005291 magnetic effect Effects 0.000 claims abstract description 29
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 10
- 239000000356 contaminant Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 85
- 229910052742 iron Inorganic materials 0.000 abstract description 43
- 239000006148 magnetic separator Substances 0.000 abstract description 38
- 239000002994 raw material Substances 0.000 abstract description 37
- 230000005294 ferromagnetic effect Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract 2
- 230000005389 magnetism Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Sorting Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、鉄鉱石や焼結鉱等の磁性鉱石内に混在する
磁性夾雑物を除去する磁性材料選別装置に係わり、特に
磁性の強い磁性鉱石内からも磁性夾雑物を除去すること
ができる磁性材料選別装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic material sorting device for removing magnetic impurities mixed in magnetic ores such as iron ore and sintered ore. The present invention relates to a magnetic material sorting device that can remove magnetic contaminants even from within ore.
従来、鉄鉱石や、焼結鉱等の磁性鉱石（以下単に原材料
と呼ぶ）内に混在する鉄片等の磁性夾雑物（以下単に鉄
片と呼ぶ）を除去する装置としては、第４図（ａ）に示
す装置が知られている。また、同図（ａ）〜（ｆ）はそ
の鉄片を除去する過程を示す。先ず図（ａ）において、
Ｘ方向に移動する搬送滋（ベルトコンベア等）１により
搬送されて来る原材料２から、これに混在する鉄片６の
み存在を検出できる検出器３により検出し、検出信号を
出力する。この検出信号により第１のＩａ磁選機（通常
゛電磁石を使用）が励磁される。この際、磁選機４は励
磁されてから最大の磁力が得られるまでに数秒間型する
。このため、予め鉄片６が到来する数秒間手前で磁選機
４が励磁される。次に図（ｂ）において、鉄片６が磁選
機４のほぼ真下に来ると、磁選機４の磁力が最大となっ
ているので、原材料２と共に鉄片６は磁選は４に吸着さ
れる。この際、鉄片６は原材料２より磁性が強いので、
原材料２より先に磁選機４の底部付近に吸着される。次
に図（Ｃ）において、第１の磁選閤４の電源を断ち、磁
選機４の残留磁気等による漸減特性を利用して磁選機４
に吸着された原材料２及び鉄片６を磁選機４から落下さ
せる。この際、新らたに搬送されて来る原材料２は第１
の磁選Ｉ４の下を移動しているので吸着された原材料２
及び鉄片６は図（ｄ）に示すごとく後続する原材料２の
表面上に薄層どなって分散する。次に図（ｅ）において
、鉄片６を載ぜた原材料２は第１の磁選機４より磁力を
弱くした第２の磁選機５へ搬送され、図（ｆ）において
、鉄片６のみがこの第２の磁選機５に吸着される。Conventionally, as a device for removing magnetic impurities such as iron pieces (hereinafter simply referred to as iron pieces) mixed in magnetic ores such as iron ore and sintered ore (hereinafter simply referred to as raw materials), there is a device shown in Fig. 4 (a). The device shown in is known. Moreover, the same figure (a) - (f) shows the process of removing the iron piece. First, in figure (a),
A detector 3 capable of detecting only the presence of iron pieces 6 mixed therein is detected from a raw material 2 conveyed by a conveyor (such as a belt conveyor) 1 moving in the X direction, and a detection signal is output. This detection signal excites the first Ia magnetic separator (usually using an electromagnet). At this time, the magnetic separator 4 molds for several seconds after being excited until the maximum magnetic force is obtained. For this reason, the magnetic separator 4 is excited in advance several seconds before the iron piece 6 arrives. Next, in Figure (b), when the iron piece 6 comes almost directly under the magnetic separator 4, the magnetic force of the magnetic separator 4 is at its maximum, so the iron piece 6 and the raw material 2 are attracted to the magnetic separator 4. At this time, since the iron piece 6 has stronger magnetism than the raw material 2,
It is adsorbed near the bottom of the magnetic separator 4 before the raw material 2. Next, in Figure (C), the power to the first magnetic separator 4 is cut off, and the magnetic separator 4 is
The raw material 2 and iron pieces 6 adsorbed on the magnetic separator 4 are dropped from the magnetic separator 4. At this time, the newly transported raw material 2 is
As it moves under the magnetic separator I4, the raw material 2 is adsorbed.
The iron pieces 6 are then dispersed in a thin layer on the surface of the subsequent raw material 2 as shown in Figure (d). Next, in Figure (e), the raw material 2 loaded with iron pieces 6 is conveyed to a second magnetic separator 5 whose magnetic force is weaker than that of the first magnetic separator 4, and in Figure (f), only the iron pieces 6 are transferred to the second magnetic separator 5, which has a weaker magnetic force than the first magnetic separator 4. It is attracted to the magnetic separator 5 of No. 2.
以上図（ａ）〜（ｆ）で示した一連の過程で原材料２か
ら鉄片６が除去される。The iron piece 6 is removed from the raw material 2 through the series of steps shown in Figures (a) to (f) above.
ところで、前述したごとく、鉄片６を検出してから、第
１の磁選機４により鉄片６を吸着するためには、予め数
秒間手前で磁選機４を励磁しなければならない。このた
め、例えば第５図（ａ）に示すごとく原材料２自体の磁
性が強い場合は、磁選別４の励磁を始めた初期からｖｉ
１選機４に原材料２が吸着されるので、鉄片６が１選機
４の付近に到達した時には、既に多山の原材Ｆ４２がＩ
ａ磁選機に吸むされており、このため鉄片６を吸着する
余地が無くなり鉄片６を取り逃がしてしまうことがある
。また、逆に第１の磁選機４の磁力を弱くすれば鉄片６
は吸着できなくなり、取り逃がしてしまう。このように
、原材料２が強磁性鉱石の場合に、従来の方法では第１
の磁選機４の磁力を変化させても、強磁性鉱石中に含ま
れる鉄片６を確実に除去することができない。さらに、
第５図（ｂ）に示したごとく、磁選機４に吸着されて積
層となった天吊の原材料２は、後続して搬送されてくる
原材料２を塞ぎ止める障壁となることがあり、これによ
り搬送機１のＡ付近がブリッジ状にたわむので搬送機１
を損傷さぼる恐れがあった。By the way, as described above, in order to attract the iron pieces 6 by the first magnetic separator 4 after detecting the iron pieces 6, the magnetic separator 4 must be excited for several seconds in advance. For this reason, if the raw material 2 itself has strong magnetism as shown in FIG. 5(a), for example, the vi
Since the raw material 2 is adsorbed by the first selection machine 4, by the time the iron piece 6 reaches the vicinity of the first selection machine 4, many piles of raw material F42 have already been absorbed into the I
(a) The iron pieces 6 are sucked by the magnetic separator, so there is no room for the iron pieces 6 to be attracted, and the iron pieces 6 may be removed. Conversely, if the magnetic force of the first magnetic separator 4 is weakened, the iron pieces 6
can no longer be absorbed and will escape. In this way, when the raw material 2 is a ferromagnetic ore, the conventional method
Even if the magnetic force of the magnetic separator 4 is changed, the iron pieces 6 contained in the ferromagnetic ore cannot be reliably removed. moreover,
As shown in FIG. 5(b), the ceiling-suspended raw materials 2 that are attracted to the magnetic separator 4 and formed into a stack may act as a barrier to block the raw materials 2 that are subsequently conveyed. Because the area near A of the transporter 1 bends in a bridge shape, the transporter 1
There was a risk of damage.
この発明はこのような背景の下になされたもので、その
目的は強磁性鉱石中からも鉄片等の磁性夾雑物を確実に
除去できる磁性材料選別装置を提供することにある。The present invention was made against this background, and its purpose is to provide a magnetic material sorting device that can reliably remove magnetic impurities such as iron pieces even from ferromagnetic ore.
この発明は、磁性鉱石内に混在する磁性夾雑物を検出す
る検出手段と、この検出手段により検出される前記磁性
夾雑物を除去する第１．第２の電磁石で構成される除去
手段とからなる磁性材料選別装置において、前記第１の
電磁石の底面に沿って走行する非磁性のベルトを設け、
前記ベルトの外周面に凸状の突起物を設けたことを特徴
とする。The present invention includes a detection means for detecting magnetic contaminants mixed in a magnetic ore, and a first detection means for removing the magnetic contaminants detected by the detection means. A magnetic material sorting device comprising a removing means constituted by a second electromagnet, a non-magnetic belt running along the bottom surface of the first electromagnet,
The belt is characterized in that a convex projection is provided on the outer peripheral surface of the belt.
上記の装置によれば、第１の磁選機に設けられたベルト
の走行により、該ベルトに設けられた凸状の突起物が原
材料に当たるので、該原材料は前記第１の磁選別に滞る
ことなく落下する。According to the above device, as the belt provided in the first magnetic separator runs, the convex protrusions provided on the belt hit the raw material, so that the raw material falls without being delayed in the first magnetic separator. do.
以下図面を参照してこの発明の一実施例を説明する。第
１図はこの発明の一実施例の構成を示ず図であり、また
第２図（ａ）〜（ｄ）は原材料内に混在する鉄片を除去
する過程を示したものである。また第１図において、排
出ベルト付きＩｉｔｔｍ機〈以下単に磁選別と呼ぶ）８
以外の機器は従来と同様の芸構であるので説明を省略す
る。先ず、磁選機８は底部に第１のｍ選機４が設けられ
ており、さらに、この第１の磁選機４の底部を通過する
ようにして、搬送機１と同方向に進行する（図にＪ３い
てＹ方向）排出ベルト９が設けられている。この排出ベ
ルト９には第３図に示すスクレーバと呼ばれるＬ字型の
ブロック９ａが取付けられてあり、このスクレーバ９ａ
は排出ベルト９の回転により第１の磁選機４に吸着され
た原材料２と鉄片６とをかき出す働きをする。また、こ
の排出ベルト９はゴム部材等の比磁性材が使用される。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram that does not show the structure of an embodiment of the present invention, and FIGS. 2(a) to 2(d) show the process of removing iron pieces mixed in raw materials. In addition, in Fig. 1, an Iittm machine with a discharge belt (hereinafter simply referred to as magnetic sorting) 8
The other equipment is the same as the conventional one, so the explanation will be omitted. First, the magnetic separator 8 is provided with a first m-selector 4 at the bottom, and further passes through the bottom of the first magnetic separator 4 and moves in the same direction as the conveyor 1 (see FIG. (J3 and Y direction) is provided with a discharge belt 9. An L-shaped block 9a called a scraper shown in FIG. 3 is attached to this discharge belt 9.
serves to scrape out the raw material 2 and iron pieces 6 that have been attracted to the first magnetic separator 4 by rotating the discharge belt 9. Further, this discharge belt 9 is made of a non-magnetic material such as a rubber member.
以上の構成において、第２図（ａ）〜（ｄ）を参照して
原材料２内に混在する鉄片６の除去過程を説明する。ま
ず図（ａ）において、検出器３によって鉄片６が検出さ
れると、Ｉｉ！１選態８は、鉄片６が到達する数秒前に
励磁される。そして、鉄片６が磁選機８のほぼ真下まで
搬送されてくると、＋ａ磁選機は原材料２と共に鉄片６
を吸着する。この際、鉄片６は原材料２より磁性が強い
ので原材料２より先に磁選機８に吸着される。次に図（
ｂ）及び図（Ｃ）において、磁選機８に吸着された原材
料２と鉄片６は磁性の弱いものからベルト９に取付けら
れたスクレーバ９ａによって磁選驕８の前方へ排出され
る。この排出される原材料２および鉄片６のうち、前述
したごとく鉄片６の磁性が強いためこの鉄片６は最後に
排出される。また、搬送機１によって新らたに搬送され
てくる原材料２は磁選久８の下を移動しているので、排
出された原材料２および鉄片６は後続する原材料２の表
面上に７Ｉ層７となって分散する。次に図（ｄ）におい
て、鉄片６を載せた原材料２はｌａ磁選機より磁力を弱
くした第２のｔａ磁選機（通常、電磁石または永久磁石
のうちいずれかを使用する。）へ搬送され鉄片６のみが
この第２の！！選復５に吸着される。In the above configuration, the process of removing the iron pieces 6 mixed in the raw material 2 will be explained with reference to FIGS. 2(a) to 2(d). First, in Figure (a), when the iron piece 6 is detected by the detector 3, Ii! The first option 8 is energized several seconds before the iron piece 6 arrives. Then, when the iron pieces 6 are conveyed to almost directly below the magnetic separator 8, the +a magnetic separator is loaded with the iron pieces 6 together with the raw material 2.
adsorbs. At this time, since the iron piece 6 has stronger magnetism than the raw material 2, it is attracted to the magnetic separator 8 before the raw material 2. Next figure (
In b) and Figure (C), the raw materials 2 and iron pieces 6 that have been attracted to the magnetic separator 8 are discharged forward of the magnetic separator 8 by a scraper 9a attached to a belt 9 in order of weak magnetism. Of the raw material 2 and the iron piece 6 to be discharged, the iron piece 6 has strong magnetism as described above, so this iron piece 6 is discharged last. In addition, since the raw material 2 newly conveyed by the conveyor 1 is moving under the magnetic separator 8, the discharged raw material 2 and iron pieces 6 form a 7I layer 7 on the surface of the subsequent raw material 2. become dispersed. Next, in Figure (d), the raw material 2 on which the iron pieces 6 are placed is transferred to a second TA magnetic separator (usually using either an electromagnet or a permanent magnet), which has a weaker magnetic force than the LA magnetic separator. Only 6 is this second! ! Adsorbed by Selection 5.
以上の過程によって、原材料２内から鉄片６を除去する
。Through the above process, the iron piece 6 is removed from the raw material 2.
以上説明したようにこの発明によれば、磁性鉱石内に混
在する磁性夾雑物を検出する検出手段と、この検出手段
により検出される前記磁性夾雑物を除去する第１．第２
の電磁石で構成される除去手段とからなる磁性材料選別
装置において、前記第１の電磁石の底面に沿って走行す
る非磁性のベルトを設け、前記ベルトの外周面に凸状の
突起物を設けてなるので、強磁性原材料であっても、こ
の内に混在する鉄片等の磁性夾雑物を取り逃がすことな
く確実に除去することができる。As explained above, according to the present invention, there is a detection means for detecting magnetic contaminants mixed in magnetic ore, and a first detection means for removing the magnetic contaminants detected by the detection means. Second
A magnetic material sorting device comprising a removing means constituted by an electromagnet, wherein a non-magnetic belt is provided that runs along the bottom surface of the first electromagnet, and a convex protrusion is provided on the outer peripheral surface of the belt. Therefore, even if the raw material is ferromagnetic, it is possible to reliably remove magnetic impurities such as iron pieces mixed therein without letting them escape.
第１図は本発明の一実施例の構成を示す側面図、第２図
（ａ）〜（ｄ）は本発明の装置による選別過程を示す側
面図、第３図は排出ベルトに設けられたスクレーバを示
す所面図、第４図は従来の磁性材料選別装置の構成を示
す側面図、第５図（ａ＞及び（ｂ）は第４図における装
置の不具合を示す側面図である。
２・・・・・・磁性原材料、３・・・・・・検出器、５
・・・・・・第２の磁選機、６・・・・・・鉄片、８・
・・・・・１ｉ１１選機、９・・・・・・排出ベルト、
９ａ・・・・・・スクレーバ。Fig. 1 is a side view showing the configuration of an embodiment of the present invention, Figs. 2 (a) to (d) are side views showing the sorting process by the device of the present invention, and Fig. 3 is a side view showing the configuration of an embodiment of the present invention. 4 is a side view showing the configuration of a conventional magnetic material sorting device, and FIG. 5 (a> and (b) is a side view showing a problem with the device in FIG. 4. 2 ...Magnetic raw material, 3...Detector, 5
...Second magnetic separator, 6...Iron piece, 8.
...1i11 selection machine, 9...discharge belt,
9a...Scraper.
Claims (1)
、この検出手段により検出される前記磁性夾雑物を除去
する第１、第２の電磁石で構成される除去手段とからな
る磁性材料選別装置において、前記第１の電磁石の底面
に沿って走行する非磁性のベルトを設け、前記ベルトの
外周面に凸状突起物を設けてなる磁性材料選別装置。A magnetic material sorting device comprising a detection means for detecting magnetic contaminants mixed in magnetic ore, and a removal means composed of first and second electromagnets for removing the magnetic contaminants detected by the detection means. A magnetic material sorting device comprising: a non-magnetic belt running along the bottom surface of the first electromagnet; and a convex protrusion on the outer peripheral surface of the belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61193787A JPS6349266A (en) | 1986-08-19 | 1986-08-19 | Screening device for magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61193787A JPS6349266A (en) | 1986-08-19 | 1986-08-19 | Screening device for magnetic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6349266A true JPS6349266A (en) | 1988-03-02 |
Family
ID=16313787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61193787A Pending JPS6349266A (en) | 1986-08-19 | 1986-08-19 | Screening device for magnetic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6349266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014136819A (en) * | 2013-01-16 | 2014-07-28 | Nippon Steel & Sumitomo Metal | Method for removing iron piece mixed in sintered ore |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325901U (en) * | 1976-08-12 | 1978-03-04 | ||
| JPS552424B2 (en) * | 1972-02-21 | 1980-01-19 |
-
1986
- 1986-08-19 JP JP61193787A patent/JPS6349266A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552424B2 (en) * | 1972-02-21 | 1980-01-19 | ||
| JPS5325901U (en) * | 1976-08-12 | 1978-03-04 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014136819A (en) * | 2013-01-16 | 2014-07-28 | Nippon Steel & Sumitomo Metal | Method for removing iron piece mixed in sintered ore |
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