SU1215744A1 - Method of removing magnetic product extracted in electric magnetic separation - Google Patents

Description

one

The invention relates to the field of mineral processing and can be used in the dry electromagnetic separation of finely divided concentrates containing highly magnetic minerals.

The purpose of the invention is more complete removal of the extracted magnetic particles.

 FIG. 1 schematically shows a device implementing the method; in fig. 2 shows section A-A in FIG. one.

A device that implements the proposed method contains an electromagnet 1 with poles, a vibrating channel 2 and a vibration reflector 3, installed between the poles of the electromagnet I and the vibrating channel. 2 and attached to the vibrating tray. Under the vibrating channel 2 is the receiver 4 of the magnetic product. Vibrating channel 2 and vibration reflector 3 are made of non-magnetic material. The plane of the vibration reflector is located at a distance of 0.3-0.5 mm from the edge of the vibrating channel 2, depending on the size of the magnetic product to be extracted. The thickness of the vibrating reflector 3 is 0.1-0.2 mm. The poles 1 of the electromagnet are located as close as possible to the vibration reflector 3 but in such a way that they do not touch during operation.

The proposed method is carried out as follows.

The vibrating channel 2 transports the initial mixture with the speed of the UTR (Fig. 2)

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while performing sinusoidal oscillations with a vertical acceleration component from vibration of 10-30 m / s and a horizontal 50-200 m / s -. The vibrating rotor 3, attached to the vibrating disc 2, oscillates with the same accelerations. In the extraction cycle, the magnetic particles are attracted to the vibration reflector 3 by the action of a magnetic field of an electromagnet fed by an alternating current. The extraction cycle of the extracted magnetic particles consists of two parts: demagnetization and pause. At the beginning of the cycle, delete

S neither the electromagnet is disconnected from the AC source and is connected to a capacitor precharged from the battery. Capacitor times through winding

0 electromagnet, creating damped oscillations. As a result, the electromagnet and the magnetic particles attracted to the vibration deflector 3 are demagnetized. After demagnetization

5, the electromagnet is disconnected from the capacitor and a pause begins that lasts at least 2510 s. During the pause, the extracted particles under the action of vibration and gravity separate

0 are from the vibrating channel 2 and fall into the receiver 4.

After the pause is complete, the electromagnet is connected to an alternating current source and the extraction cycle is repeated.

ZVShShI Shrazh 515

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Branch ShSh Patent, Uzhgorod, Proektna St., 4

Claims (1)

METHOD FOR REMOVAL extraction with the electromagnetic separation of magnetic products comprising effect on the magnetic particles vibration and off the magnetic field of the difference ga me ayuschiys I that, in order to more completely remove the extracted magnetic particles vibration carried acceleration 50200 m / ^g, and the magnetic field is switched off for a time of at least 25 · 10 ”s.