Magnetic separator

FIELD: cleaning of inert finely-dispersed medium from admixtures of strong magnetic, weak magnetic, paramagnetic and diamagnetic current-conducting particles; concentration of ore wastes in mining industry; food-processing industry.

SUBSTANCE: proposed separator has adjustable vibration bin for delivery of initial material and external drum made from dielectric material; it is made in form of working member which may be locked in any position relative to magnetic system. Magnetic system consists of external non-magnetic drum and internal drum made from magnetic material and provided with rows of permanent magnet units secured radially on it.

EFFECT: avoidance of forming of magnetic flocculi; enhanced separation of free particles and aggregations.

2 cl, 2 dwg

 

Magnetic separator is designed to clean any inert fine environment from impurities sinnamahoning, weakly magnetic, paramagnetic and diamagnetic conductive particles and can be used for enrichment of waste ore mining industry, as well as for removal of magnetic impurities in the food industry.

Magnetic enrichment methods based on the magnetic properties of minerals that occur and manifest themselves in a magnetic field, and most of them only in a strong magnetic field with high tension.

Known enrichment mining tailings, containing the site of magnetic separation of waste into fractions as the boot device, conveyor with an endless belt mounted on rotating drums, magnetic system, made in the form of a magnetic rotor inside the driven drum of a conveyor belt, and a magnetic rotor with its actuator, by which the rotation of the rotor in two opposite directions, dispenser waste fractions, receiver separated waste fractions (patent for useful model №43197, 03 7/00, publ. 10.01.2005,).

The disadvantage of this setup is that it work the body in the form of a conveyor with an endless belt, which often fails, resulting in a reduced duration of maintenance-free operation.

A prototype of the selected magnetic separator (patent for invention №1793971, 03 1/02, publ. 07.02.1990 g), includes a rotating drum located inside the stationary magnetic system. The magnetic system consists of a fixed to the yoke and connected to the rows of blocks of permanent magnets with the same direction of the same name polarities in a row and alternating between rows. The series is made with the offset of the geometric axes of the same name and unlike poles on the magnitude of 0.1-0.2 of the length of the unit permanent magnets. The rows of permanent magnets are made in increments of 0.6-0.8 width of the unit permanent magnets.

The disadvantage of this technical solution is that such a magnetic separator can be used to extract only the magnetic impurities.

The objective of the proposed technical solution is expanding Arsenal of devices, the principle of which is based on the difference of the magnetic properties of substances used in the enrichment of any inert fine environment or purification from impurities as Selfnominated and weakly magnetic, paramagnetic, diamagnetic conductive particles.

The problem is solved using the proposed magnetic separator containing an outer drum and located inside the magnetic system. The outer drum is made of dielectric material is in the form of a working body with a shaped profile and can be locked in different positions relative to the magnetic system, and the magnetic system is made with the possibility of rotation and has an internal magnetic drum, which has radially arranged with alternating polarity rows of blocks of permanent magnets and the outer drum made of a nonmagnetic material.

Novelty and inventive step of the claimed technical solution is confirmed by the fact that in contrast to the known solutions:

- magnetic system consists of an inner magnetic drum, which has radially arranged with alternating polarity rows of blocks of permanent magnets and the outer drum made of nonmagnetic material;

magnetic system is made to rotate by an electric motor with speed from 1500 rpm to 10,000 rpm, which allows you to create fields of great tension and heterogeneity;

- the outer drum is made of a dielectric material in the form of a working body with a shaped profile and can be locked in different positions relative to the magnetic system that allows you to change the magnetic influence to enrich the material and also to increase or decrease the length of the working space. In addition, there is no need for a conveyor belt and the second leading drum motor;

the vibratory feeder of the filing of the original material performed with the who what and is very useful for the regulation of its position in the workspace, depending on the type of magnetic properties of enriched material.

This solution magnetic separator allows you to increase the intensity and anisotropy field of the magnetic system that allows effective separation of magnetic particles and non-magnetic minerals in the working area of the separator. Due to the high speed rotation of the magnetic system generates an alternating magnetic field, which causes the conductive particles eddy currents and acting alternately on the magnetic and conductive particles, the forces of magnetic attraction and magnetic repulsion. The resulting magnetic particles in the form of "boiling" layer move on the outer drum, made of a dielectric material in the form of a working body with a shaped profile in a direction opposite to the rotation of the magnetic system, and as a result of exposure to fine particles of the magnetic powder and the mechanical strength of particles with different magnetic properties become different trajectories and removed from the magnetic field as separate products with different magnetic permeability.

The proposed invention is presented on figure 1 and figure 2.

Magnetic separator contains an adjustable vibratory feeder 1 with controller 2 for supplying the source material, the outer drum, made of a dielectric material in the form of a working organ with a shaped profile and can be locked in different positions relative to the rotating magnetic system 4, consisting of an external drum 5, is made of a nonmagnetic material, and the inner magnetic drum 6, which is fixed radially arranged with alternating polarity rows of blocks of permanent magnets 7, the ceramic separator 8, the dust-extraction device 9.

The device operates as follows.

Fine powder, which requires a high degree of purification, served in the regulated feeder 1, where vertically poured down without touching the working body 3, this stream enters the vortex AC traveling magnetic field generated by the magnet system 4, a rotating motor (not shown). Depending on the magnetic properties of enriched material, the speed of rotation of the magnetic system 4 is changed from 1500 rpm to 10000 rpm due to high speed rotation of the magnetic system 4 generates an alternating magnetic field, which causes the conductive particles eddy currents and acting alternately on the magnetic and conductive particles, the forces of magnetic attraction and magnetic repulsion. The resulting magnetic particles And continuously move in the form of "boiling" layer on the working body 3 in the direction opposite to rotation of the magnet system 4, and as a result of exposure to particles of fine powder of the magnetic and mechanical forces frequent the samples with different magnetic properties become different trajectories and removed from the magnetic field as separate products, different magnetic permeability. Inert material is diverted downwards and formed in the process, dust is removed from the working space of the dust-extraction device 9. Ceramic separator 8 prevents the mixing of the separated fractions after the termination of the magnetic field. Depending on the type of magnetic properties of enriched material and impurities regulator 2 is set to the desired position of the feeder 1.

Magnetic separator can be used for both dry and wet separation.

This solution allows you to create a running frequency field, which magnetic particles in the form of "boiling" layer continuously moving on the working body in the direction opposite to the rotation of the magnetic system, and due to the intense magnetic stirring prevents the formation of magnetic flocs and provides good separation of free particles and aggregates.

1. Magnetic separator containing an outer drum and located inside the magnetic system, characterized in that the outer drum is made of a dielectric material in the form of a working body with a shaped profile and can be locked in a different position relative to the magnetic system, the magnetic system is made with the possibility of rotation and contains DNAs is Rennie magnetic drum, which is fixed radially arranged with alternating polarity rows of blocks of permanent magnets and the outer drum made of a nonmagnetic material.

2. Magnetic separator according to claim 1, characterized in that it has a feeder for feeding the source material, made with the possibility of regulation.



 

Same patents:

FIELD: mining; dressing of minerals with the help of a method of magnetic separation of pulps.

SUBSTANCE: the invention is pertaining to the field of dressing of minerals f minerals with the help of a method of magnetic separation of fine-dispersed pulps, selective separation by magnetic properties of the finely dispersed dry magnetic powder mineral mixtures. The technical result is combining of an effective breaking- down of magnetic pudding stones and floccules with a high selectivity of magnetic separation of fine pulps and finely-dispersed dry magnetic powder mineral mixtures. The separator contains a magnet system, which has been made out of permanent magnets capable to rotate with a regulated frequency. The magnet system is made out of three layers of permanent magnets: a central layer - with magnets in the form of rectangular prisms, additional layers - with magnets in the form of the truncated prisms. The separator is also equipped with a lateral separating chamber with a movable gate separating an area of a demagnetization and breaking-down of the magnetic floccules from an area of additional purification and separation with a capability of separation of mineral mixtures both in the form of fine pulps and in a dry state.

EFFECT: the invention ensures a combining of an effective breaking-down of magnetic pudding stones and floccules with a high selectivity of magnetic separation of the fine pulps and finely-dispersed dry magnetic powder mineral mixtures.

1 dwg

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

Magnetic separator // 2170620
The invention relates to magnetic separation of fine mineral mixtures and fine particles in the form of a dry powder

FIELD: mining; dressing of minerals with the help of a method of magnetic separation of pulps.

SUBSTANCE: the invention is pertaining to the field of dressing of minerals f minerals with the help of a method of magnetic separation of fine-dispersed pulps, selective separation by magnetic properties of the finely dispersed dry magnetic powder mineral mixtures. The technical result is combining of an effective breaking- down of magnetic pudding stones and floccules with a high selectivity of magnetic separation of fine pulps and finely-dispersed dry magnetic powder mineral mixtures. The separator contains a magnet system, which has been made out of permanent magnets capable to rotate with a regulated frequency. The magnet system is made out of three layers of permanent magnets: a central layer - with magnets in the form of rectangular prisms, additional layers - with magnets in the form of the truncated prisms. The separator is also equipped with a lateral separating chamber with a movable gate separating an area of a demagnetization and breaking-down of the magnetic floccules from an area of additional purification and separation with a capability of separation of mineral mixtures both in the form of fine pulps and in a dry state.

EFFECT: the invention ensures a combining of an effective breaking-down of magnetic pudding stones and floccules with a high selectivity of magnetic separation of the fine pulps and finely-dispersed dry magnetic powder mineral mixtures.

1 dwg

Magnetic separator // 2294243

FIELD: cleaning of inert finely-dispersed medium from admixtures of strong magnetic, weak magnetic, paramagnetic and diamagnetic current-conducting particles; concentration of ore wastes in mining industry; food-processing industry.

SUBSTANCE: proposed separator has adjustable vibration bin for delivery of initial material and external drum made from dielectric material; it is made in form of working member which may be locked in any position relative to magnetic system. Magnetic system consists of external non-magnetic drum and internal drum made from magnetic material and provided with rows of permanent magnet units secured radially on it.

EFFECT: avoidance of forming of magnetic flocculi; enhanced separation of free particles and aggregations.

2 cl, 2 dwg

FIELD: engines and pumps; mining.

SUBSTANCE: invention is used for processing of unsized material with fineness of up to 250 mm. Drum magnetic separator comprises non-magnet rotary drum, magnetic system installed inside drum, feeder and receiver. Magnet system is made of permanent magnet plates of neodymium-iron-boron, which are assembled in the first quarter of drum in the form of rings with alternating magnetic polarity along drum width. In the second quarter magnetic system is also arranged from permanent magnet plates of neodymium-iron-boron. They are assembled in the form of magnet rows with alternating magnetic polarity in the direction of material movement, with alternating pole pitch from 120 mm to 60 mm and possibility to combine separate plates in blocks.

EFFECT: higher efficiency of large-sized unclassified ore separation process, high selectivity of coarse grain products separation in the first quarter of drum, magnetic transport of coarse and selection of fine ones in the second quarter of drum.

1 cl, 2 dwg

Magnet separator // 2354458

FIELD: instrument making.

SUBSTANCE: invention is related to the field of magnet separation of fine-dispersed materials and fine particles in the form of dry powder. Magnet separator comprises body that consists of settling chamber and regeneration chamber, magnet rods installed inside hollow tubular settling elements with the possibility of reciprocal motion, device for displacement of magnet rods and device for removal of magnet admixtures. Additionally separator contains chamber for preliminary separation of settled magnet admixtures from separated material, which is installed between settling chamber and regeneration chamber. Every section of tubular settling elements located in chamber of preliminary separation is equipped with two helical fixed knives. Initial sections of knives are joined and located on upper surfaces of hollow settling elements in the area of transition of settled magnet admixtures from settling chamber into preliminary separation chamber. Final sections of helical knives are radially turned in different sides relative to initial sections by 90° and are located on side surfaces of hollow settling elements in the area of transition of settled magnet admixtures from chamber of preliminary separation into regeneration chamber.

EFFECT: increased efficiency of separation and reduced losses of material.

3 dwg

FIELD: technological processes.

SUBSTANCE: invention is intended for removal of ferromagnetic metal particles from granulated loose materials. Magnetic separator comprises body in the form of rotary nonmagnetic drum, two magnetic systems arranged in it with permanent magnets arranged with the possibility to vary intensity of magnetic field developed by them. Drum is equipped with shaft and magnetic systems installed on both sides of shaft with the possibility to vary position relative to side inner surface of drum. Shaft is rigidly connected to body element in the form of frame, two sides of which are perpendicular, and two - parallel to shaft. At the latter there are two yokes installed, in every of which there is a magnetic system fixed, comprising a unit of permanent magnets. Yoke is arranged in the form of sector element with back wall parallel to side surface of drum, and two sides walls, which are perpendicular to axis of drum, each side wall of yoke is equipped with rectangular and round cuts. Guides of square shape are pulled via rectangular cuts with clearance and equipped with limiters in the form of two forks that serve for adjustment of yoke travel relative to side surface of drum and perpendicular to its axis, between back wall and guides of yoke there are cam shafts installed with two eccentrics, which interact with forks of guides. Each cam shaft is installed with the possibility of rotation in two holders, which are rigidly joined to walls of frame, parallel to shaft. Shaft of drum is installed with the possibility of rotation around its axis at the moment of magnetic systems adjustment for their setting into working position. Length of rectangular slot in yoke wall is designed so that angle of cam axis rotation makes 180°.

EFFECT: improved efficiency of separation.

2 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to enrichment of minerals with the help of magnetic separation. Proposed magnetic separator comprises magnetic system made up of permanent magnets that can revolve at controlled frequency, and separation chamber. The latter is arranged below magnetic system whereto separated product comes via one of several channels arranged at different distances sideways of said magnetic system. Magnetic product is discharged by water flow directed normally from separation chamber inner surface.

EFFECT: higher selectivity of separation.

1 dwg

FIELD: process engineering.

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EFFECT: higher efficiency of magnetic separation and cleaning of highly magnetised impurities.

2 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to gravity-magnetic separator for flocculation of plankton and bacteria contained in ballast water and to separation of flakes collected by magnetic force. This separator comprises first tank with mixer connected with outboard water feed pipe to mix said water with added flocculating agent and magnetic powder. The latter is fed from appropriate device to make magnetic micro flakes including magnetic powder. Second tank comprises mixer for slower mixing of water whereto polymer flocculating agent is added. This allows the increase in sizes of magnetic micro flakes for processed water discharged from first tank with mixer. Magnetic separator serves to collect increased magnetic flakes by magnetic force. Said processed water is discharged from second tank with mixer and includes increased magnetic flakes. Return and addition device returns collected flakes from magnetic separator by scrapers into outboard water feed pipe to position ahead the first tank with mixer and ahead of position where flocculating agent is added to add collected flakes to outboard water.

EFFECT: higher efficiency of flocculation with no use of chemicals.

5 cl, 7 dwg, 2 tbl

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