Electromagnetic separator

FIELD: separation of finely divided mechanically prepared mixtures containing magnetic fractions.

SUBSTANCE: separator includes apparatus for feeding raw material, unit for separating raw material in the form of plate with three-phase winding, trough with ferromagnetic layer in bottom mounted on elastic members. When apparatus for feeding raw material realizes working process of metering material, mechanically prepared mixture is fed in trough that performs rocking due to change of magnetic induction. Due to action of pondermotive forces magnetic particles float up to surface of layer moving downwards, they move towards traveling magnetic field and enter pipeline for products. Unit for separating raw material and trough are arranged by inclination angle α relative to horizontal plane. Inclination angle of trough and rigidity of elastic members may be adjusted.

EFFECT: enhanced quality of separation process.

2 dwg

 

Electromagnetic separator.

The device can be used for separating mechanical mixtures into components of their magnetic fraction. The prior art of the invention are known from magnetic separation molding compounds, as well as a magnetic mineral beneficiation. The known device for extracting thin magnetic fraction (Vphoto Electromagnetic separators. M.: Mashinostroenie, 1978; Vierraden and other Processes and machines for mineral processing. M.: Nedra, 1974) contain rotating elements in phase separation and leads to the formation of flocs, resulting in increased operating costs and reduces the quality of the separation process. The reason preventing people from getting in the known solutions of the desired result (reduction of operational costs and improving the quality and percentage yield of the allocated components is the availability of the rotating mechanical system and high level of magnetic potential energy U required to provide magnetic ponderomotive force, extracting and retaining the magnetic particle and the resulting collapse of flocs.

Closest to the claimed device is an electromagnetic separator (patent for invention №2217237)containing feeder of raw materials in the form of a funnel with the changing diameter of razdelitel, consisting of two vertically arranged plates. Plate made of electrical steel sheets. In the slots stacked three-phase winding that generates a traveling magnetic field. When the mechanical separation of the mixture in the specified separator is discharging planning under the action of gravity, by increasing the cross-sectional area of the jet. Magnetic particles are deflected to the edges of teeth, impose restrictions on cross-scheduling non-magnetic particles and with them down the teeth in the collection of the concentrate, reducing the quality.

The reason preventing people from getting in the prototype the desired result (quality improvement division), is a steady increase in the jet cross section at free fall between the vertical plates of the separator.

The essence of the invention.

The invention is aimed at improving the quality of the separation process of fine mechanical mixtures containing magnetic fraction. In the implementation of the workflow (the generation of the magnetic fraction from mechanical mixtures) the original product from the dispenser enters the trench, forming with a horizontal plane an angle α. The mixture, moving down the chute regulated by the geometry of the trough configuration is subjected to the action of ponderomotive forces of the magnetic field and shaking, which VSP is indicates. Traveling magnetic field attracts the magnetic particles along the inclined face of the gutter across the movement of the mixture under the action of gravity along the chute down.

The technical result obtained by the solution of the problem is the mechanical separation of the mixture only on the magnetic and only the non-magnetic fraction, i.e. the improvement of the quality of the separation process. The required technical result, namely improving the quality of the separation process is achieved by the constrained mechanical flow of the mixture under the action of gravity along the bottom of the inclined chute, floating magnetic particles under the action of ponderomotive forces (F=μVHqradH) half-cycle and fluctuations elastically suspended gutters due to the alternating magnetic field, then move them along the inclined face of the gutter in the pipeline thanks to the energy of a traveling magnetic field.

The essential features characterizing the inventive electromagnetic separator.

Restrictive: contains a device for the supply of raw materials, separator materials, a three-phase winding that generates a traveling magnetic field.

Distinctive: the separator material is made in the form of a plate, angled α to a horizontal plane, and a three-phase winding is located on the plate, and the groove is installed on the elastic elements, the bottom of the chute is equipped with Ferr the magnetic layer, thus the slope of the gutters and the stiffness of the elastic elements are regulated.

The drawing shows a side view of the separator and the section a-A.

The inventive electromagnetic separator consists of a device for feeding raw material 1, the separator of the raw material 2-phase winding 3 and the trench 4, the elastic elements 5, 6 and 7 of the magnetic particles in the trough and pipeline works as follows. From the device substrate feed, dosing volume separation, mechanical mixture enters the groove, the angle of α which is adjustable. The bottom of the trench contains a magnetic layer may be made of a ferromagnetic). Under the action of an alternating magnetic field trough on the elastic elements varies. Kinematic parameters of the oscillatory process are controlled by magnetic induction B and the stiffness of the elastic elements, which together with the angle of the gutter allows you to adjust the flow rate of the mixture. Ponderomotive magnetic force FPM=μVHgradH-dependent magnetic permeability environment μ, the volume of the magnetic particles V, magnetic field strength H and its derivative, reduces the effect of gravity G≤FPM. Magnetic particle under the action of vibration of the trough surface layer moving down. Due to the change of magnetic energy U running magnetic field magnetic particle moves is estrecho velocity field V fand into the pipeline.

Electromagnetic separator containing a device for feeding raw materials, separator materials, a three-phase winding that generates a traveling magnetic field, characterized in that the separator material is made in the form of a plate, angled α to a horizontal plane, and gutters, with three-phase winding is located on the plate, and the groove is installed on the elastic elements, the bottom of the chute is equipped with ferromagnetic interlayer, with the slope of the gutters and the stiffness of the elastic elements are regulated.



 

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SUBSTANCE: proposed separator includes magnetic system located under moving belt of conveyer around vertical axis; magnetic system consists of permanent magnets at alternating polarity over circle arc. Revolving magnetic system is located above moving belt of conveyer and distance between belt and inclination of axis of rotation may be changed vertically; magnetic fraction is unloaded by means of non-magnetic disk rotating together with magnetic system; this disk is located under magnetic system for change of distance to magnets.

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2 dwg

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FIELD: separation of finely divided mechanically prepared mixtures containing magnetic fractions.

SUBSTANCE: separator includes apparatus for feeding raw material, unit for separating raw material in the form of plate with three-phase winding, trough with ferromagnetic layer in bottom mounted on elastic members. When apparatus for feeding raw material realizes working process of metering material, mechanically prepared mixture is fed in trough that performs rocking due to change of magnetic induction. Due to action of pondermotive forces magnetic particles float up to surface of layer moving downwards, they move towards traveling magnetic field and enter pipeline for products. Unit for separating raw material and trough are arranged by inclination angle α relative to horizontal plane. Inclination angle of trough and rigidity of elastic members may be adjusted.

EFFECT: enhanced quality of separation process.

2 dwg

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