Universal magnetic separator

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 mineral processing method of wet magnetic separation, but also by selective separation of magnetic properties of fine dry powder mineral mixtures.

There are various types of drum magnetic separators are designed for enrichment of magnetite ore in the form of slurries, and working with dry mineral mixtures [V.v.karmazin, Vierraden. Magnetic and electrical methods of enrichment. - M., Nedra, 1988].

A common shortcoming of these devices is the low efficiency of the separation of magnetic minerals and minerals rocks and aggregates due to magnetic flocculation.

There are also known devices intended for pre-demagnetization materials alternating magnetic fields with the aim of destroying the magnetic floc before separation [Have, Naisterahva, Lajonchere. Magnetic enrichment of strongly magnetic ores. - M.: Nedra, 1979].

A common shortcoming of these devices is the inability to work with the product and materials in dry, low efficiency of magnetic treatment of the separated products before separation and incomplete extraction of magnetic minerals.

The closest technical solution to offer is the drum magnetic separator with inverse magnetic on the s, created by the rotating permanent magnets near the inner surface of the drum [Zvegintsev A.G. Patent RU 2220775 C1, bull.№1, 10.01.2002] (prototype).

The disadvantage of this apparatus is adapted for operation with liquid slurries and the impossibility of combining the process of degaussing and destruction of magnetic flocs with selective magnetic separation.

The technical result of the proposed universal magnetic separator is the combination of effective destruction of magnetic conglomerates and flocs with high selectivity magnetic separation of slurries or fine dry powder mineral mixtures.

This technical result is achieved by the fact that universal magnetic separator for magnetic processing and separation of mineral mixtures, comprising a magnetic system, made of permanent magnets, with the possibility of rotation with adjustable frequency, what is new is that the magnetic system is made of three layers of permanent magnets, the Central - with magnets in the form of rectangular prisms and more - with magnets in the form of truncated prisms and provided with side separation chamber with a movable flap that separates the area degaussing and destruction of magnetic flocs from areas further purification and separation, with the possibility of time the population of mineral mixtures in the form of slurries, and in dry form.

The drawing shows a schematic view of a universal magnetic separator. The described apparatus includes rotating with an adjustable number of revolutions of the non-magnetic cylinder 1 within which is located a magnetic system consisting of the United side faces of the permanent magnets in the form of rectangular parallelepipeds 2 (Central strip and two lateral strips 3, 4 consisting of magnets in the form of truncated prisms. The magnetic moments of all magnets have the same direction. The cylinder is located inside the separator 5 made of nonmagnetic stainless steel, equipped with a discharge valve 6 and the movable valve 7, which can be moved in horizontal and vertical directions and divides the separation chamber into two zones - zone degaussing and destruction of flocs, and the zone of separation of magnetic particles from aggregates and non-magnetic particles. The rotation of the cylinder with magnets occurs in the direction of the arrow 8.

Does magnetic separator as follows. The separated mineral mixture in the form of a slurry is fed in the direction of the arrow 9 in a water-filled chamber 10. Under the action created by the magnetic system of a rotating magnetic field is intense destruction of magnetic flocs 11. The movement of the magnetic particles in the direction of the magnetic system resistance is ostaetsya their rotation speed of the magnetic system. The magnetic particles 12 are pressed against the wall of the separation chamber and rotating in a clockwise direction, upwards and together with the excess water is excreted in the direction of the arrow 13 of the separator.

Non-magnetic particles of minerals 14, and the magnetic values of the magnetic susceptibility below a certain critical value (set by the damper 7) accumulate in the lower part of the separation chamber and periodically removed through the drain valve 6 in the direction of the arrow 15.

Movement of the valve 7 allows you to adjust the quality of the separated product. When lifting it upwards and approach to the magnetic system is an increase in tension acting on the separated product of a rotating magnetic field, which leads to an increase in the extraction of magnetic minerals by reducing the quality of the concentrate, and when lowering flaps and its removal from the magnetic system is reduction of magnetic forces, leading to selection of only the mineral particles with the highest values of the specific magnetic susceptibility, increase the quality of the concentrate. The separation of products consisting of several magnetic minerals with different magnetic properties, the possibility of their selective separation.

The universal magnetic separator allows is also the separation of finely dispersed dry powder mineral mixtures. For this separation, the camera is released from the water valve 6 is in the open position, moving the valve 7 is adjusted to the desired quality of the magnetic concentrate.

The claimed universal magnetic separator is different from other similar devices and from the prototype in that there is no rotating drum. The separator is provided with a separation chamber located on the side, allowing the separation, both wet and dry method. The design of the magnetic system provides intensive rotation of individual particles of the magnetic minerals. The separation process is divided into two stages. At the first stage in the separation chamber is the destruction of the magnetic flocs, and the second, a further purification of the magnetic minerals that contribute to obtaining a masterbatch.

When testing the prototype universal magnetic separator mode peredishki magnetite concentrates in the form of a pulp processing plants JSC “Lebedinsky”, “Stoylenskaya” and other GOK iron content in the concentrate was increased to 2-3%.

Universal magnetic separator for magnetic processing and separation of mineral mixtures, comprising a magnetic system, made of permanent magnets, with the possibility of rotation with adjustable frequency, different t is m, that the magnetic system is made of three layers of permanent magnets, the Central - with magnets in the form of rectangular prisms and more - with magnets in the form of truncated prisms, and is provided with side separation chamber with a movable flap that separates the area degaussing and destruction of magnetic flocs from areas further purification and separation, with the possibility of separation of mineral mixtures in the form of slurries and dry.



 

Same patents:

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.

SUBSTANCE: invention relates to magnetic property separation of materials and may be used for extraction of highly magnetised materials from placer concentrates to be used in mining and lab conditions. Proposed method comprises forcing initial material through magnetic separator with cylindrical work surface with horizontal axis and variable, travelling, magnetic field, displacing flocculated magnetic particles by revolving drum and travelling magnetic field, separating material particles by magnetic forces, adhesion, friction as well as gravity and centrifugal forces into magnetic and nonmagnetic fractions, and discharging separation products. Magnetic fraction is subjected to continuous intensive cleaner flotation in forcing flocculated material along closed circular path over drum surface to separate joints and draw rock particles trapped in magnetic floccules, and periodic discharge of magnetic fraction after eliminating retaining magnetic field.

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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