Magnetic separator

FIELD: process engineering.

SUBSTANCE: invention relates to magnetic separation of various materials and may be used in agriculture for removal of impurities from grain and seed mixes that feature magnetic properties. Magnetic separator comprises two drums arranged one above the other to house stationary magnetic systems, feeder and intake bins. Top drum is mounted to reciprocate in horizontal pane to adjust thickness of processed mix layer.

EFFECT: higher efficiency of separation, electric power savings.

3 cl, 2 dwg

 

The invention relates to magnetic separation of various materials and can be used in agricultural production as a working body in the milling industry for separation of grain and seed mixes impurities possessing magnetic properties, as well as to highlight ferrous metal impurities from nonmagnetic materials.

Known magnetic separator, including installed one another with a gap and rotatably in one direction cylindrical drums with parallel generatrices, the inner surface of the outer of which is intended for transportation, magnetic system, installed in the inner drum, drive to the drums, the startup window for the submission of material inside the transporting drum and pitched boards for the reception of separated fractions, the inner cylindrical drum mounted offset to the top of the transporting cylindrical drum.

The lack of magnetic separator design is the complexity and considerable power consumption.

The closest in technical essence is a magnetic separator for separating granular material containing a drum with a working surface of a nonmagnetic material, inside which is located a magnetic system, Pete is spruce and receivers separation products, further provided with a ferromagnetic cylinder, mounted inside the drum eccentrically with respect to its axis and rotating with it. The magnetic system is placed on the outer surface of a cylinder and is made as separate elements, set with alternating poles across its surface and with a gap between the peripheral edges.

The disadvantage of this device is a low cleaning efficiency of bulk product from ferromagnetic impurities due to the sliding of the upper layer of ferromagnetic particles.

The objective of the invention is to increase the efficiency of separation of the mixture from the ferromagnetic component and excluding the cost of electricity.

The solution of this problem is achieved by the fact that in a magnetic separator, containing mounted for rotation working bodies and placed them in magnetic elements, feeder and receiver separation products, magnets placed in thin-walled drums, which form a rotating finned cylindrical surface under gravity flow of granular matter.

The efficiency of separation of the mixture from the ferromagnetic component is increased due to the fact that through the use of two work items sequentially disposed on opposite sides of the housing Sep'a is atora, with a suitable choice of the strength of the magnetic attraction, the stream is processed on both sides, which contributes to a better separation of the mixture from the ferromagnetic component.

1 shows a magnetic separator; figure 2 - cross section A-A figure 1.

The magnetic separator includes a housing 1 having a feeder 2 for the incoming mixture. In the housing 1 is fixed shafts 3 and 8 are rotatably on bearings posted by nonmagnetic drums 4 and 9, having a cylindrical surface with ribs 5 and 10, in drums with a minimum clearance still on the shafts 3 and 8 of the fixed magnetic members, which are ferromagnetic semi-cylinders 6 and 7. The body 1 is installed receivers 11 and 13 of the ferromagnetic component and the receiver 12 nonmagnetic fractions. To adjust the flow of the incoming mixture, the housing 1 is equipped with a mechanism 15 with the handle 16 of the drive screw controls 14 longitudinal movement of the drum 4, by which the reciprocating shaft 3 moves.

Magnetic separator works as follows.

Share the mixture from the ferromagnetic component is fed into the feeder 2, accommodated in the housing 1, under the action of gravitational force of the flow on edges 5 and 10 are rotated working bodies 4 and 9 (drums finned surface)to the surface which attracted ferromagnet the basic particles under the action of the magnets 6 and 7. The drums rotate on bearings mounted on fixed axes 3 and 8. Ferromagnetic particles are receivers 11 and 13, which stops the action of the magnetic force, and they fall from the drum surface. The nonmagnetic fraction, purified from ferrocast supplied to the receiver 12. To increase throughput of the separator drum 4 is moved by means of a screw regulators 14, rotating the handle 16 of the mechanism 15, increasing the channel passing through the mixture. In case you need a more thorough cleaning of the magnetic particles of the drum 4 is moved in the opposite direction, reducing the thickness of the flowing layer of the mixture.

We offer magnetic separator compared to the prototype provides the following technical and economic advantages.

Increases the efficiency of separation of the mixture from the ferromagnetic component resulting from the application of two working bodies, consistently placed at opposite sides of the casing of the separator, the resulting mixture is treated on both sides and promotes complete separation of the mixture from the ferromagnetic component.

Cleaning loose material from ferrocast no electricity is consumed.

1. Magnetic separator comprising two spaced one above the other drum installed inside them fixed magnetic systems, Pete is spruce and hoppers, characterized in that, to improve the efficiency of the separation process and the control bandwidth, the upper drum is mounted for displacement reciprocating in a horizontal plane to control the thickness of the layer of the mixture.

2. The separator according to claim 1, characterized in that the reel is made with a ribbed outer surface.

3. The separator according to claim 1, characterized in that the separator is equipped with a drive movement of the upper drum.



 

Same patents:

FIELD: process engineering.

SUBSTANCE: proposed separator relates to dressing of mineral resources. It comprises nonmagnetic rotary drum with magnetic system arranged there inside in semi-counter flow bath, feeder, and separation products collectors. Magnetic system consists of two sections: first, a standard one, is made up of fixed magnetic rows with alternating magnetic polarity and two rotary rpm-adjustable magnetic rows arranged in parallel with drum rotational axis in material loading and unloading zones.

EFFECT: higher quality of concentrate and reduced losses.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to ore processing, dressing or minerals and grading crushed ore to sizes at mining enterprises. Proposed method comprises feeding iron ore into drum screen with rotary sieving surface. Ore rolling from inclined surface is caught on screen leading edge by magnetic drum revolving toward screen and adds ore as far as possible onto leading side of sieving screen. Proposed method is implemented using drum screen that comprises drum with sieving surface, drive, feeder, separation products receiver. Besides, drum screen inside accommodates magnetic drum made up of revolving nonmagnetic ring shell and magnetic system. Rotational axis of magnetic drum is arranged parallel with that of cylindrical screen or at minor angle. Direction of drum rotation is opposed to that of screen.

EFFECT: higher efficiency of screening.

9 cl, 4 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention is intended for removal of magnetic metal impurities from bulk materials. The ball mill magnetic separator contains a rotary non-magnetic drum casing, a discharge device and a magnetic system with permanent magnets shaped as rectangular prisms. The drum is mounted on the outlet flange of the rotary ball mill and rotates together with it. Around the drum a support structure is arranged; mounted thereon at a gap relative to the drum casing and within its rotation plane is a magnetic conductor shaped as an arched magnet frame whose sector is equal to 200-220 and mounted as displaced by an angle of 20-40 from the vertical axis of the drum rotation plane in the direction opposed to that of the drum rotation. On the magnet frame surface turned towards the drum casing there are magnetic systems arranged with permanent magnets based on rare-earth metal alloys. The permanent magnets shaped as rectangular prisms whose side length ratio a:b:h, is 2:1:0,8. The pole pitch S of the permanent magnets on the arched magnet frame is 80-160 mm. On the inner surface of the steel drum there are polar metal concentrators arranged for the frame magnetic system. Attached to the support structure and arranged perpendicular to the drum rotation plane and at a slant downwards is a discharge device represented by a box-shaped tray serving for discharge of magnetic impurities. The tray is mounted in such a way that its beginning is positioned under the upper end of the frame arch with magnetic systems.

EFFECT: improved efficiency of magnetic impurities removal.

3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to magnetic separation equipment. Proposed magnetic separator comprises rotary magnetic roller. Its magnetic system consists of circular or disk-like permanent magnets, magnetised axially and separated by circular or disk-like ferromagnetic concentrators. Adjacent permanent magnets adjoin thereto by like poles. Separator comprises also cleaning device arranged along magnetic roller to clean roller working surface of magnetic particles of separated product, feeders, separators and receivers of separated product. Said cleaning device represents solid ferromagnetic drag-type body with ledges sharpened towards roller surface. Magnetic flows of the roller system of permanent magnets are closed along the roller via said ledges to generate magnetic fields acting along roller axis. Said fields are directed from roller working surface towards ferromagnetic body sharpened ledges.

EFFECT: simplified process, lower costs.

8 cl, 8 dwg

FIELD: technological processes.

SUBSTANCE: magnetic separator comprises non-magnetic rotary drum and magnetic system arranged inside drum, which generates alternating magnetic fields, feeder and receivers of separation products. Magnetic system is arranged of permanent magnets in the form of rectangular prisms combined by alternating sections in two rows along with drum travel. At some sections magnets are installed on base with differently directed magnetic moments. At other sections magnets are installed on rib with magnetic moments directed towards each other with the possibility to vary opposite angle of magnets inclination, which provide for pushing of magnetic power lines due to horizontal stress effect and as a result, shaking and ripping of material in process of its motion.

EFFECT: improved quality of fine unclassified ore separation process quality.

2 dwg

Separator-analyser // 2375117

FIELD: mining.

SUBSTANCE: invention is related to mining industry, namely to devices for concentration of magnetite ores. Separator-analyser comprises nonmagnetic rotary drum with varied number of rotations and magnetic system with varied configuration of magnetic field, arranged near drum. Separator comprises feeder and receivers of separation products. Magnetic system is made of permanent magnets Nd-Fe-B in the form of right-angled parallelepipeds, to which permanent magnets are attached to two opposite sides with magnetic torques directed to one side installed in separate cylinders with the possibility of their rotation by 180 around axis and fixation.

EFFECT: improved efficiency of separation.

2 dwg

FIELD: mining.

SUBSTANCE: invention relates to dry magnetic separation of slightly magnetic materials by magnetic properties in metal mining industry, chemical industry, pharmaceutical industry and other industries. Dry magnetic separation of slightly magnetic materials involves supplying of the material being concentrated to the magnetic field created by a magnetic roller around the horizontal axis. Moreover, retention of magnetic grains in the magnetic field under the action of a magnetic force directed to the roller surface, removal non-magnetic grains out of the magnetic field under the action of the gravity force to the non-magnetic seperation product, removal of magnetic grains beyond the zone of removal of non-magnetic grains by rotation of the magnetic roller and the following removal of the magnetic grains to the magnetic seperation product. The material to be concentrated is supplied directly on the magnetic roller surface which is electroconductive. In order to provide seperation of magnetic grains from the roller and the following removal in the magnetic product, beyond the zone of removal of non-magnetic grain an electric field is set up between the magnetic roller and the non-magnetic electrode. Voltage of the opposite sign is supplied on them with intensity that makes the electric force separating the magnetic grains from the roller surface stronger than the magnetic force retaining these grains against the roller surface. A dry magnetic separation device includes a roller with a horizontal axis of rotation collected from permanent magnets, feeding device to supply material to be concentrated, devices to receive non-magnetic and magnetic products of separation. The roller is electroconductive and there is an electrod located along the entire length of the magnetic roller and there is a gap as viewed from the device in order to receive the magnetic product.

EFFECT: arrangement of conditions to remove the magnetic grains attached to the magnetic roller surface without using a tape as well as reduced operational costs and improved reliability of the separator operation.

10 cl, 1 dwg

FIELD: mining engineering; mechanics.

SUBSTANCE: method for magnetic separation includes pulp feeding to operating zone of separators by two process middling flows with different quality. Operating zone of separator is fed from two sides in a differential manner. Material with lower iron content is fed in counter-flow to the direction of drum rotation, while material with higher iron content is fed in the same direction as the direction of drum rotation. Magnetic separator includes a non-magnetic drum, which is installed in such a manner as to be able to rotate. This drum accommodates a magnetic system, a bath, and receivers for magnetic and non-magnetic products. Two charging openings are provided in said separator: counter-flow charger and direct flow charger.

EFFECT: improvement of magnetic product quality, simplification of layout design for feeding of separation from different sides.

2 cl, 2 dwg

FIELD: technological processes; physics.

SUBSTANCE: method of magnetic separation includes performance of separation at the speed of separated medium in slot channel that corresponds to circumferential speed of every one of drums that rotate towards each other, subsequent removal of retained deposit of magnet-sensitive fraction from surface of drums after drain of medium that went through separation from working zones. Drain of this medium is carried out in undisturbed mode on the section of tail working zone between shortened branch of saddle-type channel and edge of magnetic sector. Magnetic separator consists of two rotary drums, inside of which magnetic sectors are installed that are turned to each other and saddle-type channel with two symmetrical branches installed under drums. One receiving and two tail working zones of medium separation are created between magnetic sectors. Branches of saddle-type channel are arranged as impermeable and shortened compared to tail work zones, every of which is limited with edge of magnetic sector. Beyond borders of every magnetic sector, along direction of drum rotation, combined device is installed for removal of deposit of magnet-sensitive fraction from drum surface.

EFFECT: higher efficiency of magnet separation process.

11 cl, 5 dwg

FIELD: mining.

SUBSTANCE: present invention relates to concentration of minerals and may be used in the mining industry and other industries of the national economy. Invention allows for increasing the magnetic field strength and separation quality. The magnetic system consists of a set of polar blocks with alternating polarity, and interpolar blocks installed on a magnetically conductive yoke and made of strontium ferrite. The polar and interpolar blocks are mated with their like poles. The polar blocks are made of different hard magnetic materials, most of them being made of strontium ferrite, white the plate facing the internal drum surface is made of a rare earth material, the polar block length ratio ranging from 10:1 to 1:1, and their area ratio ranging from 1:1 to 1:0.5.

EFFECT: increased magnetic field strength and separation quality.

1 dwg

Magnetic separator // 2319549

FIELD: mining industry; other industries; production of the magnetic separator used for separation of the material according to their magnetic properties.

SUBSTANCE: invention is pertaining to separation of the material according to their magnetic properties and may be used at reprocessing of the magnetite ores. Invention allows to improve efficiency of crushing of magnetic conglomerates at the expense of action of the magnetic forces with the variable value of the radial component and the inversion tangential component during movement of the separated product by the gyrating drum concerning the magnet system. The separator includes: the non-magnetic drum mounted with the capability of rotation; the bath; the loading and unloading tools; the magnet system located inside the drum and made in the form of the mounted on the magnetic conductor the main permanent magnets of the rectangular shape and the fixed on the surface the magnets and additional magnets made in the form of rectangular prisms and fixed on the surface of the main permanent magnets. Main and additional magnets have similar magnetic polarity. Prisms of additional magnets have smaller width, than main permanent magnets and, and are mounted in radial direction with clearance between them.

EFFECT: invention ensures increased efficiency of crushing of magnetic conglomerates.

5 dwg, 1 tbl

FIELD: mining.

SUBSTANCE: present invention relates to concentration of minerals and may be used in the mining industry and other industries of the national economy. Invention allows for increasing the magnetic field strength and separation quality. The magnetic system consists of a set of polar blocks with alternating polarity, and interpolar blocks installed on a magnetically conductive yoke and made of strontium ferrite. The polar and interpolar blocks are mated with their like poles. The polar blocks are made of different hard magnetic materials, most of them being made of strontium ferrite, white the plate facing the internal drum surface is made of a rare earth material, the polar block length ratio ranging from 10:1 to 1:1, and their area ratio ranging from 1:1 to 1:0.5.

EFFECT: increased magnetic field strength and separation quality.

1 dwg

FIELD: technological processes; physics.

SUBSTANCE: method of magnetic separation includes performance of separation at the speed of separated medium in slot channel that corresponds to circumferential speed of every one of drums that rotate towards each other, subsequent removal of retained deposit of magnet-sensitive fraction from surface of drums after drain of medium that went through separation from working zones. Drain of this medium is carried out in undisturbed mode on the section of tail working zone between shortened branch of saddle-type channel and edge of magnetic sector. Magnetic separator consists of two rotary drums, inside of which magnetic sectors are installed that are turned to each other and saddle-type channel with two symmetrical branches installed under drums. One receiving and two tail working zones of medium separation are created between magnetic sectors. Branches of saddle-type channel are arranged as impermeable and shortened compared to tail work zones, every of which is limited with edge of magnetic sector. Beyond borders of every magnetic sector, along direction of drum rotation, combined device is installed for removal of deposit of magnet-sensitive fraction from drum surface.

EFFECT: higher efficiency of magnet separation process.

11 cl, 5 dwg

FIELD: mining engineering; mechanics.

SUBSTANCE: method for magnetic separation includes pulp feeding to operating zone of separators by two process middling flows with different quality. Operating zone of separator is fed from two sides in a differential manner. Material with lower iron content is fed in counter-flow to the direction of drum rotation, while material with higher iron content is fed in the same direction as the direction of drum rotation. Magnetic separator includes a non-magnetic drum, which is installed in such a manner as to be able to rotate. This drum accommodates a magnetic system, a bath, and receivers for magnetic and non-magnetic products. Two charging openings are provided in said separator: counter-flow charger and direct flow charger.

EFFECT: improvement of magnetic product quality, simplification of layout design for feeding of separation from different sides.

2 cl, 2 dwg

FIELD: mining.

SUBSTANCE: invention relates to dry magnetic separation of slightly magnetic materials by magnetic properties in metal mining industry, chemical industry, pharmaceutical industry and other industries. Dry magnetic separation of slightly magnetic materials involves supplying of the material being concentrated to the magnetic field created by a magnetic roller around the horizontal axis. Moreover, retention of magnetic grains in the magnetic field under the action of a magnetic force directed to the roller surface, removal non-magnetic grains out of the magnetic field under the action of the gravity force to the non-magnetic seperation product, removal of magnetic grains beyond the zone of removal of non-magnetic grains by rotation of the magnetic roller and the following removal of the magnetic grains to the magnetic seperation product. The material to be concentrated is supplied directly on the magnetic roller surface which is electroconductive. In order to provide seperation of magnetic grains from the roller and the following removal in the magnetic product, beyond the zone of removal of non-magnetic grain an electric field is set up between the magnetic roller and the non-magnetic electrode. Voltage of the opposite sign is supplied on them with intensity that makes the electric force separating the magnetic grains from the roller surface stronger than the magnetic force retaining these grains against the roller surface. A dry magnetic separation device includes a roller with a horizontal axis of rotation collected from permanent magnets, feeding device to supply material to be concentrated, devices to receive non-magnetic and magnetic products of separation. The roller is electroconductive and there is an electrod located along the entire length of the magnetic roller and there is a gap as viewed from the device in order to receive the magnetic product.

EFFECT: arrangement of conditions to remove the magnetic grains attached to the magnetic roller surface without using a tape as well as reduced operational costs and improved reliability of the separator operation.

10 cl, 1 dwg

Separator-analyser // 2375117

FIELD: mining.

SUBSTANCE: invention is related to mining industry, namely to devices for concentration of magnetite ores. Separator-analyser comprises nonmagnetic rotary drum with varied number of rotations and magnetic system with varied configuration of magnetic field, arranged near drum. Separator comprises feeder and receivers of separation products. Magnetic system is made of permanent magnets Nd-Fe-B in the form of right-angled parallelepipeds, to which permanent magnets are attached to two opposite sides with magnetic torques directed to one side installed in separate cylinders with the possibility of their rotation by 180 around axis and fixation.

EFFECT: improved efficiency of separation.

2 dwg

FIELD: technological processes.

SUBSTANCE: magnetic separator comprises non-magnetic rotary drum and magnetic system arranged inside drum, which generates alternating magnetic fields, feeder and receivers of separation products. Magnetic system is arranged of permanent magnets in the form of rectangular prisms combined by alternating sections in two rows along with drum travel. At some sections magnets are installed on base with differently directed magnetic moments. At other sections magnets are installed on rib with magnetic moments directed towards each other with the possibility to vary opposite angle of magnets inclination, which provide for pushing of magnetic power lines due to horizontal stress effect and as a result, shaking and ripping of material in process of its motion.

EFFECT: improved quality of fine unclassified ore separation process quality.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to magnetic separation equipment. Proposed magnetic separator comprises rotary magnetic roller. Its magnetic system consists of circular or disk-like permanent magnets, magnetised axially and separated by circular or disk-like ferromagnetic concentrators. Adjacent permanent magnets adjoin thereto by like poles. Separator comprises also cleaning device arranged along magnetic roller to clean roller working surface of magnetic particles of separated product, feeders, separators and receivers of separated product. Said cleaning device represents solid ferromagnetic drag-type body with ledges sharpened towards roller surface. Magnetic flows of the roller system of permanent magnets are closed along the roller via said ledges to generate magnetic fields acting along roller axis. Said fields are directed from roller working surface towards ferromagnetic body sharpened ledges.

EFFECT: simplified process, lower costs.

8 cl, 8 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention is intended for removal of magnetic metal impurities from bulk materials. The ball mill magnetic separator contains a rotary non-magnetic drum casing, a discharge device and a magnetic system with permanent magnets shaped as rectangular prisms. The drum is mounted on the outlet flange of the rotary ball mill and rotates together with it. Around the drum a support structure is arranged; mounted thereon at a gap relative to the drum casing and within its rotation plane is a magnetic conductor shaped as an arched magnet frame whose sector is equal to 200-220 and mounted as displaced by an angle of 20-40 from the vertical axis of the drum rotation plane in the direction opposed to that of the drum rotation. On the magnet frame surface turned towards the drum casing there are magnetic systems arranged with permanent magnets based on rare-earth metal alloys. The permanent magnets shaped as rectangular prisms whose side length ratio a:b:h, is 2:1:0,8. The pole pitch S of the permanent magnets on the arched magnet frame is 80-160 mm. On the inner surface of the steel drum there are polar metal concentrators arranged for the frame magnetic system. Attached to the support structure and arranged perpendicular to the drum rotation plane and at a slant downwards is a discharge device represented by a box-shaped tray serving for discharge of magnetic impurities. The tray is mounted in such a way that its beginning is positioned under the upper end of the frame arch with magnetic systems.

EFFECT: improved efficiency of magnetic impurities removal.

3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to ore processing, dressing or minerals and grading crushed ore to sizes at mining enterprises. Proposed method comprises feeding iron ore into drum screen with rotary sieving surface. Ore rolling from inclined surface is caught on screen leading edge by magnetic drum revolving toward screen and adds ore as far as possible onto leading side of sieving screen. Proposed method is implemented using drum screen that comprises drum with sieving surface, drive, feeder, separation products receiver. Besides, drum screen inside accommodates magnetic drum made up of revolving nonmagnetic ring shell and magnetic system. Rotational axis of magnetic drum is arranged parallel with that of cylindrical screen or at minor angle. Direction of drum rotation is opposed to that of screen.

EFFECT: higher efficiency of screening.

9 cl, 4 dwg

Up!