JPS59102458A - Inductive magnetic filter for dry type magnetic separator of ultrahigh magnetic power - Google Patents

Abstract

PURPOSE:To improve the efficiency in capturing pulverous ferromagnetic powder by providing many ferromagnetic material bars each having a suitable cross section, apart from each other, within the many horizontal planes spaced from each other and deviating the positions of the ferromagnetic material bars within the adjacent horizontal planes relatively from each other in a horizotal direction. CONSTITUTION:When a material B to be treated is supplied through a chute 4 in an arrow direction, the material is supplied through a supply groove 3 opened in a vertical yoke 11 at the upper part to an inductive magnetic filter 7 around a rotary disc 5 which is horizontally rotated by a motor 6. Many ferromagnetic material bars 30 each having, for example, a circular cross section, are arranged apart from each other at a spacing P1 on one plane I in the inductive magnetic filter. Three pieces I , II, III of such planes are perpendicularly arranged apart from each other at a spacing P2 respectively and the bars 30 are provided with a deviation in a horizontal direction P1/2. The ferromagnetic material K in the material B is adsorbed on the bars 30 and is separated from the filter 7 by the compressed air from a nozzle 8.

Description

[Detailed description of the invention] It's about filters.

Conventionally, dry ultra-high magnetic force magnetic separators use an induced magnetic field to pass the processed material through a narrow gap between a pole and an induced magnetic pole (roll), and attract and attract ferromagnetic fine powder to the induced magnetic pole (roll) side. There are those that use an induction magnetic roll type for discharge, and those that have a number of electromagnetic magnet rotors facing each other, and the processed material is passed through the gap between these rotors, and the ferromagnetic fine powder is attracted to and discharged by these rotors. Symmetrical magnetic separation systems are known, but in all of these systems, the direction M of the applied magnetic field and the direction F of the supply of the processed material are different, as shown in the attached drawings. It is difficult to process a large amount of orthogonal materials, and it is also difficult to separate the ferromagnetic material trapped by the rolls and rotors from the rolls.

The present applicant has already proposed a dry ultra-high magnetic force magnetic separator having a configuration as shown in the male diagram, in order to eliminate the drawbacks of the conventional ones and, in particular, to enable mass processing. are doing.

The structure and operation will now be briefly explained as follows.

As shown in the male drawing, one vertical yoke with a cross section approximately in the shape of a mouth is cut out horizontally at the center, and the upper and lower sections provided with this cut-out section are A coil coil is wound around the turns of the vertical yoke portions 'In/2, respectively, so that an N pole and an S pole are generated at the end faces of each of the yoke parts /, , /2. In the upper yoke part /1 of these yoke parts /1 and /2, a horizontal rotary disk S is arranged so as to be rotatable by a motor 6 with a speed reducer, with a gap between the vertical pole and the S pole. However, an annular induction magnetic filter 7 is attached to the periphery of the rotating disk j, and as the rotating disk 5 rotates, a portion of the induction magnetic filter 7 changes to the north and south poles.
The induction magnetic filter is made up of a number of horizontally stacked ferromagnetic matrix plates that move between the poles. Further, outside the magnetic field region of the yoke I, a cleaning device 9 provided with a large number of air nozzles is arranged above the induction magnetic filter 7. Furthermore, in the gap between the N and S poles, an endless product conveyor belt IO is installed horizontally under the induction magnetic filter 7 from a motor with a speed reducer through a pulley/co. It is designed to run in the direction of.

The operation of this device is as follows.

When the workpiece B is fed from the supply chute in the direction of the arrow, the workpiece B passes through the vertical supply groove 3 formed in the upper vertical yoke/1, and then rotates horizontally by the motor 6 with a reduction gear. It is supplied to an induction magnetic filter 7 attached around the disk S. This induction magnetic filter 7 is magnetized by the magnetic field of the N magnetic pole and the S magnetic pole excited by the coil coil, and the ferromagnetic material K in the processed material B is magnetized.
is attracted and transported out of the magnetic field area as the rotating disk S rotates, but the non-magnetic material H is continuously moved by gravity from the motor with a speed reducer via the pulley/2. The non-magnetic material H falls onto the product conveyor belt conveyor saw, and thereby the non-magnetic material H is accommodated in the storage box/3.

On the other hand, the ferromagnetic material adsorbed on the induced magnetic filter 7 is separated from the filter 7 by compressed air blown from the air nozzle g of the cleaning device 9 outside the magnetic field region, and passes through the magnetic material chute/li to the ferromagnetic material. Stored in the storage box/S.

In this way, in this device, the N and S poles of the yoke/
The direction of the magnetic field applied by the poles is parallel to the feeding direction of the processed material B, so that the processing material is perpendicular to the many horizontally stacked ferromagnetic matrix plates constituting the induction magnetic filter 7. Since the material B'□ is supplied, the magnetic field strength gradient is increased and the adsorption area is also increased. Therefore, it is possible to perform large-scale processing under a strong magnetic field, and the processing amount compared to the conventional method is increased. However, it has not always been possible to separate the ferromagnetic material from the ferromagnetic MAx plate constituting the induction magnetic filter.

Therefore, the present invention improves the above-mentioned drawbacks of the previously proposed device, and solves the drawbacks of both conventionally known methods, such as the small throughput and the difficulty in separating the ferromagnetic material attracted to the induction magnetic pole. The object of the present invention is to obtain a new induction magnetic filter for a dry type ultra-high magnetic force magnetic separator that can eliminate the above problems.

In the present invention, in order to achieve this objective, a large number of ferromagnetic bars having appropriate cross sections are arranged on one plane at mutual intervals, and such planes are arranged at mutual intervals. In this case, between vertically adjacent planes, the ferromagnetic bars are arranged so as to be offset from each other in the vertical direction.

Hereinafter, the present invention will be explained based on FIGS. 3 to 7 of the accompanying drawings showing embodiments thereof.

FIG. 3 shows an example in which a large number of ferromagnetic rods 30 with circular cross sections are arranged on one plane (2) with a distance of Pl from each other, and three Piece 1. I
I and ■ are vertically arranged with a spacing of P from each other, in this case adjacent planes 1. Between I[, ■, and H, the ferromagnetic rod 30 is disposed horizontally shifted by P,/2. It should be noted that the ferromagnetic bodies aJθ arranged in the horizontal and vertical directions in this manner are firmly attached within the frame 3/ having an appropriate shape.

In addition, Figure O shows the implementation of Figure 3, except that the cross section of the ferromagnetic rod lIo is isosceles triangular, and it is arranged so that the apex angle faces upward and the bottom surface is horizontal. Similar to the example. Note that / in the figure indicates a frame.

Further, FIG. 3 shows an embodiment similar to the embodiment of FIG. 3, except that the cross section of the ferromagnetic rod SO is square, and one diagonal thereof is in the vertical direction. It is something. Note that S/ in the figure indicates ゎku.

Finally, Fig. 6 is the same as the embodiment shown in Fig. 3, except that the cross section of the ferromagnetic rod AI is semicircular, the arc portion faces upward, and the bottom surface is horizontal. This is an example. Note that %6/ in the figure indicates a frame.

In addition, as a modification of these embodiments, instead of a large number of ferromagnetic rods, a plurality of horizontal ferromagnetic extended metals 7θ are stacked vertically at intervals, as shown in the off-graph. In this case, it is also possible to use extended metals 7° adjacent in the vertical direction whose openings are shifted by half a pitch in the horizontal direction. Note that 71 in the figure indicates a frame.

Furthermore, in each example, the number of vertically aligned planes, the shape and dimensions of the cross section of the ferromagnetic rod, their horizontal and vertical pitches p, , p! etc. shall be selected as appropriate depending on the properties of the material to be processed and the classification accuracy.

As described above, in the present invention, as a dry type ultra-high magnetic force magnetic separator, the induction magnetic filter is placed horizontally in the gap between the two vertically arranged magnetic poles so as to be perpendicular to the direction of the magnetic field applied by the two magnetic poles. In a device that is arranged movably and supplies the processed material perpendicularly in the same direction as the direction of the applied magnetic field, a large number of ferromagnetic rods are arranged horizontally and vertically at intervals as a magnetic induction filter. In this case, the vertically adjacent ferromagnetic rods are arranged horizontally offset from each other, so that each ferromagnetic rod absorbs a large amount of the magnetic material in the processed material that is supplied from vertically above. On the other hand, non-magnetic objects can be captured smoothly and efficiently through the gaps between the ferromagnetic rods.1. In addition, since the ferromagnetic rods are spaced apart from each other in the horizontal and vertical directions, the magnetic objects adsorbed on their circumferential surfaces can be easily separated by compressed air jetted from the air nozzle. It is clear that the same effect can be obtained even when a ferromagnetic expanded metal is used instead of the ferromagnetic bar.

In this way, the present invention improves the trapping efficiency of the previously proposed dry type ultra-high magnetic force magnetic separator for ferromagnetic fine particles, etc., and also improves the separation of ferromagnetic fine particles outside of a magnetic field. The purpose of the present invention is to provide an induction magnetic filter that can overcome the drawback of low throughput in the conventional magnetic filter.

[Brief explanation of drawings]

The OFF diagram is an explanatory perspective view showing the relationship between the direction of the induced magnetic field of the induction magnetic filter of a conventionally known magnetic separator and the feeding direction of the processed material. A schematic diagram showing the configuration of a magnetic separator, FIGS. 3 to 6 are explanatory perspective views showing various embodiments of the present invention, and an off view is an explanatory perspective view showing a modified example thereof. 30, guO1Sθ, Aθ...ferromagnetic rod; 3/, 'I
/. ! ;/, AI, 71...waku;70...expander metal. Patent applicant: Mitsubishi Steel Magnetic Materials Co., Ltd. Agent: So Ga Do Teru Figure 5 Figure 6 Figure 3 Noji 7 Cause

Claims (1)

[Claims] / An induction magnetic filter is horizontally movable relative to the direction of the magnetic field applied by both magnetic poles in a gap between vertically spaced and opposing NS magnetic poles. In the induction magnetic filter of a dry type ultra-high magnetic force magnetic separator, which is arranged at of ferromagnetic rods are spaced apart from each other in a number of mutually spaced horizontal planes, where the ferromagnetic bars in adjacent horizontal planes are horizontally spaced apart from each other. An induction magnetic filter characterized by being arranged in a staggered manner. Each horizontal plane is arranged at equal intervals in the vertical direction, the ferromagnetic rods are arranged at equal intervals in each horizontal plane so as to have the same pitch, and in the adjacent horizontal plane, the ferromagnetic rods are vertically arranged. An inductive magnetic filter according to claim 1, which is shifted by a pitch. 3. An induced magnetic filter according to claim 1 or 2, wherein the ferromagnetic rod has a circular cross section. The induction magnetic filter according to claim 1, which is arranged horizontally. t. The induction magnetic filter according to claim 1, wherein the ferromagnetic bars have a square cross section and are arranged so that one diagonal line is perpendicular. (B) The induction magnetic filter according to claim (E) or (2), wherein the ferromagnetic rods have a semicircular cross section and are arranged so that the arc surface is upward and the diameter surface is horizontal. Z. The induction magnetic filter according to claim 1, wherein instead of the ferromagnetic rods, ferromagnetic expasite metals are arranged in each horizontal plane.