Drum magnetic separator with an inverted magnetic fields

 

The invention relates to the field of magnetic separation of mineral mixtures with a high degree of selectivity for their enrichment. The technical result is the effective destruction of the magnetic conglomerates and locks, high selectivity of separation of the products of the separation, low power consumption. The magnetic separator includes a non-magnetic rotating drum, a magnetic system, located inside the drum, creating a pulsating magnetic field, the feeder and receiver separation products. The magnetic system is made of permanent magnets, with the possibility of rotation with variable frequency near the inner surface of the drum axes of rotation parallel to the axis of rotation of the drum, with the possibility of changing the angles between the vertical and the radius vector to the axis of rotation of the magnets. 1 Il.

The invention relates to the field of magnetic separation of mineral mixtures with a high degree of selectivity for their enrichment.

Known drum magnetic separator comprising a stationary radial multipole magnetic system with service magnetic plates [1].

The drawback to this unit is the small number of cycles of magnetization reversal is parator, including non-magnetic drum and the magnetic system consisting of permanent magnets and electromagnets with multivibrators, feeder and receiver separation products [2].

The disadvantages of this separator are limitations in tension pulsating magnetic fields and high energy consumption.

The technical result of the proposed magnetic separator with inverted magnetic fields is the effective destruction of the magnetic conglomerates and locks, high selectivity of separation of the products of the separation, low power consumption.

This technical result is achieved by the fact that in a magnetic separator comprising a non-magnetic rotary drum and a magnetic system located inside the drum, creating a pulsating magnetic field, the feeder and receiver separation products, what's new is that the magnetic system is made of permanent magnets, with the possibility of rotation with variable frequency near the inner surface of the drum axes of rotation parallel to the axis of rotation of the drum, with the possibility of changing the angles between the vertical and the radius vector to the axis of rotation of the magnets.

In Fig.1 presents a schematic view of the separator in which the number of revolutions, inside there is a magnetic system consisting of permanent magnets in the form of rectangular prisms 3, 4, 5 with the possibility of rotation around the axes 6, 7, 8 with adjustable speed, parallel to the axis of rotation of the drum. You can change angles,,between the vertical and the radius vector to the axis of rotation of the magnets. The separator is equipped with a screen 9, a reflective non-magnetic particles, and a movable flap 10, which is designed to separate the flows of magnetic and nonmagnetic particles.

The separator operates as follows. The separated product in the form of dry powder from the boot device hits the surface of the rotating drum separator. Under the action of the alternating magnetic field generated by the rotation magnet 3, multiple alternating magnetization "soft magnetic" particles and rotation "hard magnetic particles on the drum surface, which contributes to the destruction of the magnetic conglomerates and strands, the effective separation of magnetic and nonmagnetic particles. Non-magnetic particles are moving along the path 12, and magnetic, with the remnants of the non-magnetic particles fall within the range of the magnets is etnich (path 14). Conclusion magnetic and non-magnetic products is carried out in the direction of the arrows 15 and 16, respectively.

The inventive separator differs from the prototype in that the use of rotating magnets with high magnetic induction and variable speed leads to magnetization reversal and effective separation of the separated materials. The ability to change angles,andand the speed of rotation of the drum and magnets, as well as the presence of movable flaps allow you to configure the separator for receiving the magnetic concentrates of high purity at a lower energy cost.

Sources of information

1. Copyright certificate 582835, CL 03 With 1/10.

2. Copyright certificate 668706, CL 03 With 1/10 (prototype).

Claims

Magnetic separator with an inverted magnetic fields, comprising a non-magnetic rotary drum and a magnetic system located inside the drum, creating a pulsating magnetic field, the feeder and receiver separation products, characterized in that the magnetic system is made of permanent magnets, with the possibility of rotation with variable frequency WB is modify the angles between the vertical and the radius vector to the axis of rotation of the magnets.

 

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