CN116159659A - Deep sorting device - Google Patents

Abstract

The application provides a degree of depth sorting unit, including one-level separation unit and second grade separation unit, the second grade separation unit sets up the axial side at one-level separation unit, one-level separation unit includes one-level feed hopper and magnetic separator, the magnetic separator sets up the inside at one-level feed hopper, the magnetic separator sets up with one-level feed hopper is coaxial, the magnetic separator is used for carrying out primary separation to the material in the one-level feed hopper, in order to discharge one-time magnetic separation waste material, the second grade separation unit includes second grade feed hopper and magnetic bowl, the second grade feed hopper is linked together with one-level feed hopper, one-time magnetic separation waste material enters into the second grade feed hopper from one-level feed hopper, the magnetic bowl sets up the inside at the second grade feed hopper, the magnetic field strength of magnetic bowl is greater than the magnetic field strength of magnetic separator, the magnetic bowl is used for sorting once again to one-time magnetic separation waste material. The magnetic roller is arranged to separate materials secondarily, so that materials with lower iron content are recovered, the purpose of deep separation is achieved through separation twice, and the recovery rate of magnetite is improved.

Description

Deep sorting device

Technical Field

The application belongs to iron ore magnetic separation equipment technical field, concretely relates to deep separation device.

Background

Before entering the ore grinding, magnetite is generally subjected to three-stage or four-stage crushing operation, wherein each stage of crushing operation is to carry out primary dissociation on magnetite ore, and part of monomer gangue without magnetite is regenerated, and the gangue should be subjected to sorting and tailing-throwing. Since most of iron ore types have a certain degree of magnetism, magnetic separation is the most main beneficiation method of iron ore, a magnetic separator is generally adopted to separate and recycle crushed iron ore, and the existing magnetic separator can only separate iron ore once to recycle iron ore with stronger magnetism, and the iron ore with weaker magnetism is easy to be thrown out as waste stone, so that the recovery rate of magnetite is lower.

Disclosure of Invention

Therefore, the technical problem to be solved by the application is to provide a deep sorting device which can sort magnetite twice so that ores and ore-gangue intergrowth with weak magnetism can be recovered, and the recovery rate of the magnetite is improved.

In order to solve the problem, the application provides a degree of depth sorting unit, including one-level separation unit and second grade separation unit, the second grade separation unit sets up the axial side of one-level separation unit, the one-level separation unit includes one-level feed hopper and magnetic separation body, the magnetic separation body sets up the inside of one-level feed hopper, the magnetic separation body with the coaxial setting of one-level feed hopper, the magnetic separation body is used for right the material in the one-level feed hopper carries out primary separation to discharge one-time magnetic separation waste material, the second grade separation unit includes second grade feed hopper and magnetism roller, the second grade feed hopper with the one-level feed hopper is linked together, one-time magnetic separation waste material is followed the one-level feed hopper enters into the second grade feed hopper, magnetism roller sets up the inside of second grade feed hopper, magnetism roller's magnetic field strength is greater than the magnetic separation body, magnetism roller is used for right one-time magnetic separation waste material carries out the reclassifying.

Optionally, the primary feed hopper and the magnetic separator are annular, the cross sections of the ends of the primary feed hopper and the magnetic separator, which are close to the secondary feed hopper, are larger than the cross sections of the ends, which are far away from the secondary feed hopper, and the inclination angle of the bus of the primary feed hopper and the magnetic separator is A, and A is more than or equal to 70 degrees and less than or equal to 80 degrees.

Optionally, the magnetic separator includes electromagnetic plate, connects electric ring and contact switch, the electromagnetic plate pass through contact switch with connect electric ring electric connection, the electromagnetic plate sets up a plurality ofly, a plurality of the electromagnetic plate is followed the circumference of one-level feed hopper is evenly arranged, the cross-section circumference angle of electromagnetic plate is A, and is more than or equal to 10 and less than or equal to 20, connect electric ring's cross-section circumference angle to be B, and is more than or equal to 290 and less than or equal to 310, connect electric ring to control the electromagnetic plate opens and stops.

Optionally, the one-level separation unit still includes rotation axis and one-level motor, the one-level motor pass through the rotation axis with the magnet separator is connected, the one-level motor passes through the rotation axis drives the magnet separator is followed the circumference direction of one-level feeder hopper rotates.

Optionally, the primary sorting unit further comprises a control module, wherein the control module is electrically connected with the power connection ring, the control module is used for controlling the current intensity of the power connection ring, the control module is electrically connected with the primary motor, and the control module is used for controlling the start and stop and the rotation speed of the primary motor;

and/or the number of the groups of groups,

the magnetic field intensity of the magnetic separator is C, and C is more than or equal to 100mT and less than or equal to 500mT.

Optionally, the magnetic roller comprises a permanent magnet, the permanent magnet is arranged in the magnetic roller along the circumferential direction of the magnetic roller and extends in the axial direction of the magnetic roller, the permanent magnet is fan-shaped, the circumferential angle of the section of the permanent magnet is D, A is more than or equal to 110 degrees and less than or equal to 130 degrees, the magnetic field intensity of the permanent magnet is D, and D is more than or equal to 1.1C and less than or equal to 1.2C.

Optionally, the secondary separation unit further comprises a secondary motor, the secondary motor is connected with the magnetic roller, and the secondary motor drives the magnetic roller to rotate along the circumferential direction of the magnetic roller, so that the material adsorbed by the permanent magnet falls off from the magnetic roller.

Optionally, the deep sorting device further comprises a first-stage discharge hopper, the first-stage discharge hopper comprises a first-stage ore discharge cavity and a first-stage waste rock discharge cavity, the first-stage feed hopper is communicated with the first-stage feed hopper through the first-stage waste rock discharge cavity, and the first-stage magnetic separation waste is discharged into the second-stage feed hopper through the first-stage waste rock discharge cavity.

Optionally, the second grade feed hopper includes second grade ore discharge chamber and second grade waste rock discharge chamber, the magnetic ore that second grade separation unit separated is discharged via the second grade ore discharge chamber, the second magnetic separation waste material that second grade separation unit separated is discharged via the second grade waste rock discharge chamber, the second grade separation unit still includes the division board, the division board pass through the base with the second grade feed hopper is connected, the division board sets up the magnet roller is kept away from one side of first grade feed hopper, the division board is followed the radial direction of second grade feed hopper extends, the division board includes first guide surface and second guide surface, first guide surface top with the top of second guide surface meets and forms the angle, the bottom orientation of first guide surface is towards the second grade ore discharge chamber extends, the bottom orientation of second guide surface is towards the second grade waste rock discharge chamber extends.

Optionally, the magnetic separation device further comprises a crushing portion, the crushing portion is arranged on one side, far away from the secondary separation unit, of the primary separation unit, the crushing portion is communicated with the primary separation unit, and the crushing portion and the primary separation unit are coaxially arranged.

Advantageous effects

According to the deep sorting device provided by the embodiment of the invention, the magnetic separation body and the magnetic roller are arranged to perform twice magnetic separation on ores, and the waste generated by primary magnetic separation of the magnetic separation body is subjected to twice magnetic separation through the magnetic roller, wherein the magnetic field intensity of the magnetic roller is larger than that of the magnetic separation body, so that ores and ore-gangue intergrowth bodies with weaker magnetism in the primary magnetic separation waste are adsorbed on the magnetic roller, the purpose of deep sorting is realized by twice sorting, the recovery rate of magnetite is improved, the economic benefit of a concentrating mill is improved, and meanwhile, the crushing part is communicated with the primary sorting unit, so that the crushing operation and the preselection waste throwing operation are integrated into a whole, the integration of equipment can be realized, the arrangement of an independent preselection belt conveyor and a preselection factory is avoided, the investment cost of the equipment and the factory is reduced, meanwhile, the structure of the deep sorting device is simple, and the size is small, and a plurality of operators are not required to watch the equipment, so that the operation cost and the maintenance cost of the equipment are reduced.

Drawings

Fig. 1 is a schematic structural diagram of a depth sorting device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a magnetic separator according to an embodiment of the present application.

The reference numerals are expressed as:

1. a first-stage hopper; 2. magnetic separation; 21. an electromagnetic plate; 22. an electric ring; 23. a contact switch; 3. a secondary hopper; 4. a magnetic roller; 41. a permanent magnet; 5. a rotation shaft; 6. a primary motor; 7. a second-stage motor; 8. a first-stage discharge hopper; 81. a primary ore discharge chamber; 82. a first-stage waste stone discharging cavity; 9. a partition plate; 10. a crushing section; 11. a frame; 12. a secondary ore discharge chamber; 13. and a secondary waste stone discharging cavity.

Detailed Description

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.

According to an embodiment of the application, the depth sorting device comprises a first-stage sorting unit and a second-stage sorting unit, wherein the second-stage sorting unit is arranged on the axial side of the first-stage sorting unit, the first-stage sorting unit comprises a first-stage feeding hopper 1 and a magnetic separation body 2, the magnetic separation body 2 is arranged inside the first-stage feeding hopper 1, the magnetic separation body 2 and the first-stage feeding hopper 1 are coaxially arranged, the magnetic separation body 2 is used for carrying out primary sorting on materials in the first-stage feeding hopper 1 so as to discharge primary magnetic separation waste, the second-stage sorting unit comprises a second-stage feeding hopper 3 and a magnetic roller 4, the second-stage feeding hopper 3 is communicated with the first-stage feeding hopper 1, the primary magnetic separation waste enters the second-stage feeding hopper 3 from the first-stage feeding hopper 1, the magnetic roller 4 is arranged inside the second-stage feeding hopper 3, and the magnetic field intensity of the magnetic roller 4 is larger than that of the magnetic separation body 2, and the magnetic roller 4 is used for carrying out secondary sorting on the primary magnetic separation waste.

Through setting up magnet separator 2 and magnet roller 4 can carry out twice magnetic separation to the ore, the waste material that magnet separator 2 once magnetic separation produced carries out the secondary magnetic separation through magnet roller 4, wherein magnet roller 4's magnetic field strength is greater than magnet separator 2's magnetic field strength to make the weaker ore of magnetism and ore-gangue intergrowth body of magnetic separation waste material be adsorbed on magnet roller 4, the purpose of deep separation has been realized in the separation of twice, has improved the rate of recovery of magnetite, has improved the economic benefits of concentrating mill simultaneously.

Wherein, the degree of depth sorting unit still includes frame 11, and frame 11 includes first platform, second platform and third platform, and in this application embodiment, the vertical setting of degree of depth sorting unit, first platform, second platform and third platform level set up.

Wherein, the one-level separation unit includes one-level feed hopper 1, and one-level feed hopper 1 is roughly annular, and one-level feed hopper 1 sets up the upper portion at the second platform, and one-level feed hopper 1 and second platform fixed connection, its connected mode can be bolted connection or welding etc. this application does not do further limit.

Specifically, the first-stage hopper 1 may include an outer annular surface and an inner annular surface, and on a cross section perpendicular to the central axis of the first-stage hopper 1, the cross section of the outer annular surface is larger than the cross section of the inner annular surface, and the material flows between the outer annular surface and the inner annular surface, so that a stable flow space is provided for the material by arranging the outer annular surface and the inner annular surface.

Wherein, the one-level separation unit still includes magnetic separation body 2, and magnetic separation body 2 sets up the inside at one-level feed hopper 1, and in this application embodiment, magnetic separation body 2 can be annular, and the outer wall of magnetic separation body 2 laminates with the interior anchor ring of one-level feed hopper 1 mutually, and the height of magnetic separation body 2 can be the same with the height of one-level feed hopper 1, and magnetic separation body 2 and the coaxial setting of one-level feed hopper 1.

Wherein, the one-level sorting unit still includes wear pad, and wear pad can be made by materials such as rubber, and wear pad's thickness can be 20-30mm, and in this application embodiment, wear pad's thickness is 25mm, and wear pad is annular, and wear pad cover is established on the periphery wall of magnet separator 2, can improve the life of magnet separator 2 through setting up wear pad.

Specifically, the first-stage separation unit further comprises a rotating shaft 5 and a motor, the rotating shaft 5 is arranged on the third platform through a bearing seat, the rotating shaft 5 and the first-stage feeding hopper 1 are coaxially arranged, one end of the rotating shaft 5 is connected with the magnetic separation body 2, the other end of the rotating shaft is connected with the motor, the motor can be a variable frequency motor, and the motor drives the rotating shaft 5 to rotate so as to drive the magnetic separation body 2 to rotate along the circumferential direction of the feeding hopper by taking the rotating shaft 5 as a rotation center.

The secondary sorting unit further comprises a secondary feeding hopper 3, the secondary feeding hopper 3 is approximately rectangular, the secondary feeding hopper 3 is arranged on the upper portion of the third platform, the secondary feeding hopper 3 is fixedly connected with the third platform, and the connection mode of the secondary feeding hopper 3 can be bolt connection or flange and the like.

Wherein, second grade separation unit still includes magnetism roller 4, and magnetism roller 4 can be cylindrical, and in this application embodiment, magnetism roller 4 level sets up, and magnetism roller 4 sets up the inside of second grade feed hopper 3 and keeps away from one side of material flow, and magnetism roller 4 is arranged in adsorbing weak ore of the waste rock of one-level feed hopper 1 exhaust and ore-gangue intergrowth to separate waste rock and weak ore and ore-gangue intergrowth to get rid of the waste operation, improved the rate of recovery of magnetite.

Specifically, the second-stage sorting unit further comprises a flexible pad, the flexible pad can be made of materials such as rubber, the flexible pad can be arranged on the peripheral wall of the magnetic roller 4, the thickness of the flexible pad can be 30-80mm, in the embodiment of the application, the thickness of the flexible pad is 55mm, the magnetic roller 4 can be prevented from being impacted by material flow directly through the arrangement of the flexible pad, the maintenance frequency of the magnetic roller 4 is reduced, the service life of the magnetic roller 4 is prolonged, and accordingly the service life of the deep sorting device is prolonged.

The primary feed hopper 1 and the magnetic separator 2 are annular, the sectional area of one end of the primary feed hopper 1 and one end of the magnetic separator 2 close to the secondary feed hopper 3 is larger than the sectional area of one end far away from the secondary feed hopper 3, and the inclination angle of a bus of the primary feed hopper 1 and the magnetic separator 2 is A, and A is more than or equal to 70 degrees and less than or equal to 80 degrees.

Through setting up one-level feed hopper 1 and magnetic separation body 2 for annular, the vertical two-layer thinner advantage of the annular circumference bin outlet of cone crusher or gyratory crusher has been utilized fully to make the material layer be nearer apart from annular magnetic separation body 2's peripheral wall, can realize avoiding appearing the material layer apart from 2 peripheral wall apart from too far away, the too low partial ore of field strength can not be adsorbed the condition of field strength, ensured the high-efficient recovery of magnetic separation iron.

Wherein, magnetic separation body 2 sets up the inside of one-level feed hopper 1 to arrange along the interior circumference side direction of first feed hopper, in this application embodiment, magnetic separation body 2 and the coaxial setting of one-level feed hopper 1, magnetic separation body 2 and one-level feed hopper 1 increase gradually in the ascending cross-sectional area of first direction.

The first direction may be a gravity direction to which the first-stage hopper 1 and the magnetic separator 2 are subjected, that is, the first direction is a vertically downward direction.

Specifically, the busbar inclination of one-level feed hopper 1 and magnetic separation body 2 is A, and 70 is less than or equal to A and is less than or equal to 80, and in this application embodiment, the busbar inclination of one-level feed hopper 1 and magnetic separation body 2 is preferably 75, and through setting up feed hopper and magnetic separation body 2 for upper opening little, the lower opening is big, and the busbar inclination is 75's annular structure, can guarantee that the material has sufficient separation area. Meanwhile, the material can have enough separation distance of longitudinal rolling and downward movement on the annular surface of the feeding hopper, so that the separation effect is improved, waste rocks are prevented from being mixed into the magnetic ore, and the recovery rate of the magnetic ore is improved.

The magnetic separation body 2 comprises an electromagnetic plate 21, an electric connection ring 22 and a contact switch 23, wherein the electromagnetic plate 21 is electrically connected with the electric connection ring 22 through the contact switch 23, the electromagnetic plate 21 is provided with a plurality of electromagnetic plates 21, the electromagnetic plates 21 are uniformly distributed along the circumferential direction of the primary feeding hopper 1, the circumferential angle of the section of the electromagnetic plate 21 is B, B is more than or equal to 10 degrees and less than or equal to 20 degrees, the circumferential angle of the section of the electric connection ring 22 is C, C is more than or equal to 290 degrees and less than or equal to 310 degrees, and the electric connection ring 22 is used for controlling the starting and stopping of the electromagnetic plate 21.

Wherein, the electromagnetic plate 21 is approximately isosceles trapezoid, and a plurality of electromagnetic plates 21 can be provided, and a plurality of electromagnetic plates 21 are evenly arranged along the circumference of the first-stage hopper 1, and the electromagnetic plates 21 can generate magnetic force after being electrified so as to enable the magnetic material to be adsorbed on the inner annular surface of the first-stage hopper 1.

Specifically, the circumferential angle of the cross section of the electromagnetic plate 21 is B, and B is more than or equal to 10 degrees and less than or equal to 20 degrees, and in the embodiment of the application, the circumferential angle of the cross section of the electromagnetic plate 21 perpendicular to the central axis of the primary hopper 1 is preferably 20 degrees, and 18 electromagnetic plates 21 are arranged.

The contact switch 23 is disposed below the electromagnet, the contact switch 23 may be a spring structure, and the electromagnet is electrically connected with the electric ring 22 through the contact switch 23.

Specifically, the thickness of the electric connection ring 22 can be 10-30mm, the electric connection groove is formed in the middle of the electric connection ring 22, the width of the electric connection groove is 5-10mm, the circumferential angle of the section of the electric connection ring 22 perpendicular to the central axis of the primary feeding hopper 1 is C, C is more than or equal to 290 degrees and less than or equal to 310 degrees, and in the embodiment of the application, the circumferential angle of the section of the electric connection ring 22 is preferably 300 degrees.

In the embodiment of the application, the first-stage hopper 1 annular surface area corresponding to the circumferential angle 300 degrees of the cross section of the power receiving ring 22 is a magnetic material adsorption area, the remaining first-stage hopper 1 area corresponding to the annular surface 60 degrees is an ore unloading area, and the adsorbed magnetic material is discharged through the ore unloading area.

In this application, through setting up the angle of the anchor ring that every electromagnetic plate 21 accounted for to make the electromagnetic plate 21 connect the electricity to lead to magnetism at the one-level separation unit and accomplish the absorption separation of magnetic ore back, along with the rotation of magnetic separator 2 entering to the ore unloading district, because the ore unloading district does not connect electric ring 22, the electromagnetic plate 21 that gets into the ore unloading district is demagnetized one by one, so that the magnetic ore that the inner ring face of one-level feed hopper 1 adsorbs accomplishes the ore unloading, and can realize the continuous separation and the ore unloading operation of every electromagnetic plate 21, the work efficiency of device has been improved, the regional circumference angle of the cross-section of magnetic separator 2 perpendicular to the axis of one-level feed hopper 1 is 300 corresponds all as the magnetic separation district, separation effect has been improved, the non-magnetic separation district that the surplus 60 corresponds is with the raw materials of feedstock and dry-selected ore as ore product together, the loss of magnetic mineral in the feed raw materials of non-magnetic separation district has been avoided, thereby ensured the recovery rate of the magnetic iron of magnetite has laid the basis for the high income of ore dressing factory.

The primary separation unit further comprises a rotating shaft 5 and a primary motor 6, the primary motor 6 is connected with the magnetic separation body 2 through the rotating shaft 5, and the primary motor 6 drives the magnetic separation body 2 to rotate along the circumferential direction of the primary feed hopper through the rotating shaft 5.

Through setting up rotation axis 5 and one-level motor 6 in order to make the circumference direction that magnetic separation body 2 can one-level feed hopper 1 rotate with rotation axis 5 as the rotation center, can make full use of the vertical two-layer thinner advantage of the annular circumference bin outlet of cone crusher or gyratory crusher to make the material layer be nearer apart from annular magnetic separation body 2's peripheral wall, can realize avoiding appearing the material layer apart from 2 peripheral wall of magnetic separation body far away, the too low partial ore of field strength can not be adsorbed the condition, ensured the high-efficient recovery of magnetic separation iron.

The rotary shaft 5 may be cylindrical, the rotary shaft 5 is vertically arranged, one end of the rotary shaft 5 close to the secondary hopper 3 is rotationally connected with the primary motor 6, and the other end of the rotary shaft is fixedly connected with the magnetic separator 2.

Specifically, the first-stage motor 6 can be a variable frequency motor, and the rotating speed of the adjusting motor controls the rotating speed of the magnetic separation body 2 through the rotating shaft 5, so that the magnetic separation body 2 adopts different rotating speeds corresponding to unused iron-grade materials, magnetic ores are prevented from being thrown out in a magnetic separation area, and the recovery rate of magnetite is improved.

The primary sorting unit further comprises a control module, the control module is electrically connected with the power connection ring 22, the control module is used for controlling the current intensity of the power connection ring 22, the control module is electrically connected with the primary motor 6, and the control module is used for controlling the start-stop and rotation speed of the primary motor 6;

and/or the number of the groups of groups,

the magnetic field intensity of the magnetic separator 2 is D, and D is more than or equal to 100mT and less than or equal to 500mT.

The starting and stopping of the primary motor 6 and the variable frequency signals are controlled through the setting module, and meanwhile the adsorption capacity of the magnetic separation body 2 is controlled through the current intensity signals of the control electromagnetic plate 21, so that manual operation of operators is avoided, and the automation degree of the device is improved.

Wherein, the magnetic field intensity of the magnetic separator 2 is D, and D is more than or equal to 100mT and less than or equal to 500mT, and in the embodiment of the application, the magnetic field intensity of the magnetic separator 2 is preferably 300mT.

Specifically, the electromagnetic plate 21 controls the magnitude of the accessed current through the control module, so that the field intensity of the magnetic separator 2 can be adjusted between 100mT and 500mT, and the control and adjustment of the magnetic ore adsorption force can be realized; meanwhile, the control module controls the rotation frequency conversion speed regulation of the primary motor 6 of the magnetic separator 2, so that the separation time of the materials in the primary separation unit can be regulated, the control module can regulate and control the separation magnetic force and separation time of the magnetic separator 2, and the recovery rate of magnetite is improved.

The magnetic roller 4 comprises a permanent magnet 41, the permanent magnet 41 is arranged in the magnetic roller 4 along the circumferential direction of the magnetic roller 4 and extends in the axial direction of the magnetic roller 4, the permanent magnet 41 is in a fan shape, the circumferential angle of the section of the permanent magnet 41 is E, E is more than or equal to 110 degrees and less than or equal to 130 degrees, the magnetic field intensity of the permanent magnet 41 is F, F is more than or equal to 1.1C and less than or equal to 1.2C, and the permanent magnet 41 is used for adsorbing small magnetic materials.

Wherein, the permanent magnet 41 may be in a curved plate shape, the permanent magnet 41 is disposed inside the magnetic roller 4 along the circumferential direction of the magnetic roller 4 and extends in the axial direction of the magnetic roller 4, and the length of the permanent magnet 41 is the same as the length of the magnetic roller 4.

Specifically, the cross section of the permanent magnet parallel to the second-stage hopper 3 is approximately fan-shaped, the fan-shaped included angle end is arranged towards the central axis of the magnetic roller 4, and the other end is arranged towards the material flow.

The circumferential angle of the cross section of the permanent magnet 41 perpendicular to the central axis of the magnetic roller 4 is E, and E is more than or equal to 110 degrees and less than or equal to 130 degrees, in the embodiment of the application, the circumferential angle of the cross section of the permanent magnet 41 is preferably 120 degrees, and the secondary separation area is improved by setting the circumferential angle of the cross section of the permanent magnet 41 to be preferably 120 degrees, so that the recovery rate of magnetite is improved.

Specifically, the magnetic field strength of the permanent magnet 41 is F, F is 1.1 D.ltoreq.F.ltoreq.1.2D, and in the embodiment of the present application, the magnetic field strength of the permanent magnet 41 is preferably 345mT. The ore or ore-gangue connector with weak magnetism in the waste discharged from the first-stage hopper 1 can be adsorbed by setting the magnetic field intensity of the magnetic separator 2 to be larger than that of the magnetic separator 2, so that the ore or ore-gangue connector with weak magnetism is prevented from being adsorbed and discharged as waste, and the recovery rate of magnetite is improved.

The secondary separation unit further comprises a secondary motor 7, the secondary motor 7 is connected with the magnetic roller 4, and the secondary motor 7 drives the magnetic roller 4 to rotate along the circumferential direction of the magnetic roller 4 so as to enable materials adsorbed by the permanent magnets 41 to fall off from the magnetic roller 4.

The second motor 7 may be a transmission motor, the second motor 7 is disposed on the third platform, an output end of the second motor 7 is rotationally connected with one end of the magnetic roller 4, and the magnetic roller 4 is driven by the second motor 7 to rotate along a circumferential direction of the magnetic roller 4.

Specifically, the permanent magnet is used for adsorbing the ore or ore-gangue intergrowth that magnetism is weaker on the surface of the magnetic roller 4, in this embodiment of the application, the permanent magnet keeps static in the rotation process of the magnetic roller 4, and the ore or ore-gangue intergrowth that magnetism is weaker on the surface of the magnetic roller 4 is kept away from the adsorption area of the permanent magnet along with the rotation of the magnetic roller 4, so that the dry separation waste throwing operation of magnetite can be realized, and the work efficiency is improved.

In this application, through setting up magnetic separation section of thick bamboo and second grade motor 7 rotation and being connected, through the rotation of second grade motor 7 drive magnetic separation section of thick bamboo to make permanent magnet absorbing material break away from permanent magnet adsorption area along with the rotation of magnetic roller 4, can realize the secondary dry separation of magnetite and get rid of useless operation, improved the rate of recovery of magnetite.

The advanced sorting device further comprises a first-stage discharge hopper 8, the first-stage discharge hopper 8 comprises a first-stage ore discharge cavity 81 and a first-stage waste rock discharge cavity 82, the first-stage feed hopper 1 is communicated with the first-stage feed hopper 1 through the first-stage waste rock discharge cavity 82, and primary magnetic separation waste is discharged into the second-stage feed hopper 3 through the first-stage waste rock discharge cavity 82.

The waste materials after primary separation can be distributed in a bundling mode in a strip mode in the vertical direction through the arrangement of the primary discharge hopper 8 and the inclined closing-up of the primary discharge hopper 8, the adsorption effect of the secondary separation unit is improved, the secondary separation of the primary roughing waste stones is realized through a secondary separation mode, the field intensity of the secondary magnetic separation is 1.1-1.2 times of that of the primary magnetic separation, the recovery of part of magnetite-gangue intergrowth with weaker magnetism in the primary roughing waste stones can be realized, the comprehensive recovery rate of magnetic iron is further improved through the secondary deep separation of high field intensity, and the economic benefit of a concentrating mill is guaranteed.

Wherein the primary ore discharge chamber 81 is used for discharging the initially selected magnetic ore.

The first-stage sorting unit is connected with the second-stage sorting unit through the first-stage discharging hopper 8, one end of the first-stage discharging hopper 8, which is close to the first-stage sorting unit, is annular, the other end of the first-stage discharging hopper is rectangular, strip-shaped clustered distribution of waste materials after first-stage sorting in the vertical direction can be realized, and the adsorption effect of the second-stage sorting unit is improved.

Wherein, the cross section area of the first-stage discharging hopper 8 gradually decreases in the first direction, in this embodiment, the bus bar inclination angle of the first-stage discharging hopper is 80 ° the same as the bus bar inclination angle of the first-stage feeding hopper 1.

Specifically, one end of the first-stage discharge hopper 8, which is close to the second-stage separation unit, is divided into a first-stage ore discharge cavity 81 and a first-stage waste rock discharge cavity 82, the first-stage ore discharge cavity 81 is arranged corresponding to a magnetic material adsorption area with an upper circumferential angle of 60 degrees, magnetic ore is discharged through the first-stage ore discharge cavity 81, the first-stage waste rock discharge cavity 82 is arranged corresponding to a non-magnetic material adsorption area with an upper circumferential angle of 300 degrees, and ores and ore-gangue bodies with weaker magnetism are discharged through the first-stage waste rock discharge cavity 82.

In this application, the annular structure that the first-level feed hopper 1, the magnetic separation body 2 and the first-level discharge hopper 8 are small in upper opening and large in lower opening, and the bus dip angle is 75-85 degrees, and this kind of structure not only ensures sufficient separation area, but also ensures that the material has sufficient separation distance of longitudinal rolling downward movement on the annular surface, optimizes separation effect, and improves recovery rate of magnetite.

The secondary hopper 3 comprises a secondary ore discharging cavity 12 and a secondary waste stone discharging cavity 13, the magnetic ore separated by the secondary separation unit is discharged through the secondary ore discharging cavity 12, the secondary magnetic separation waste separated by the secondary separation unit is discharged through the secondary waste stone discharging cavity 13, the secondary separation unit further comprises a separation plate 9, the separation plate 9 is connected with the secondary hopper 3 through a base, the separation plate 9 is arranged on one side, far away from the primary hopper 1, of the magnetic roller 4, the separation plate 9 extends along the radial direction of the secondary hopper 3, the separation plate 9 comprises a first guide surface and a second guide surface, the top end of the first guide surface is connected with the top end of the second guide surface to form a pointed shape, the bottom end of the first guide surface extends towards the secondary ore discharging cavity 12, and the bottom end of the second guide surface extends towards the secondary waste stone discharging cavity 13.

Wherein, division board 9 is triangle-shaped, and triangle-shaped's pointed end sets up towards magnetism roller 4, and first guide surface is the outer wall that is close to second grade ore discharge chamber 12 in the triangle-shaped that division board 9 presented, and the second guide surface is the outer wall that is close to second grade waste rock discharge chamber 13 in the triangle-shaped that division board 9 presented.

The separation plate is arranged to divide one end of the secondary hopper 3 far away from the primary hopper 1 into the secondary ore discharging cavity 12 and the secondary waste stone discharging cavity 13, so that the sorted waste stones and ore-gangue connector bodies can be discharged from the ore discharging cavity, the sorted waste stones can be discharged from the waste stone discharging cavity, the sorted waste stones can be prevented from being remixed with the ore and the ore-gangue connector body with weaker magnetism by arranging the separation plate 9, the ore and the ore-gangue connector body with weaker magnetism can be timely discharged, and the recovery rate of the magnetic iron ore is improved.

Wherein the partition plate 9 may be substantially triangular, the tip of the partition plate 9 is disposed toward the material flow, and the partition plate 9 is connected with the secondary hopper 3 through the base and the bottom plate.

Specifically, division board 9 and base fixed connection, base and bottom plate sliding connection to make division board 9 can slide along the length direction of bottom plate, can realize through changing the position of division board 9, thereby carry out different segmentation to the product of ore and barren rock, and then guarantee the high-efficient recovery of magnetic ore, ensured the rate of recovery of preselection to the magnetic iron.

The magnetic separation device further comprises a crushing part 10, the crushing part 10 is arranged on one side, far away from the secondary separation unit, of the primary separation unit, the crushing part 10 is communicated with the primary separation unit, and the crushing part 10 and the primary separation unit are coaxially arranged.

The crushing part 10 is arranged to integrate the crusher, the primary sorting unit, the secondary sorting unit and the discharge hopper on the same longitudinal frame 11 from top to bottom respectively, so that the integrated arrangement of cone crushing and pre-selection tail throwing is formed, and the crushing-coarse magnetic separation-scanning magnetic separation integrated machine is created.

Wherein, crushing portion 10 includes the breaker, and other material outlets such as breaker cone can be annular crushing apparatus, and this application does not do further limit.

Specifically, the crushing portion 10 further includes a transmission motor, the transmission motor is disposed on the first platform, the transmission motor can be connected with a movable cone of the crusher, and the movable cone is driven to rotate by the transmission motor, so that materials entering the crusher can be crushed.

Wherein, crushing portion 10 can vertical setting, and crushing portion 10 is mutually perpendicular with first platform, and crushing portion 10 is linked together with the one-level separation unit, and crushing portion 10 can set up the axial side at the one-level separation unit, and in this embodiment of the application, the one-level separation unit sets up in the below of crushing portion 10, and the material gets into the one-level separation unit after crushing portion 10 smashes.

According to the deep sorting device provided by the embodiment of the invention, the magnetic separation body 2 and the magnetic roller 4 are arranged to perform twice magnetic separation on ores, and the waste generated by once magnetic separation of the magnetic separation body 2 is subjected to twice magnetic separation through the magnetic roller 4, wherein the magnetic field intensity of the magnetic roller 4 is larger than that of the magnetic separation body 2, so that ores and ore-gangue joint bodies with weaker magnetism in the once magnetic separation waste are adsorbed on the magnetic roller 4, the purpose of deep sorting is realized by twice sorting, the recovery rate of magnetite is improved, the economic benefit of a concentrating mill is improved, and meanwhile, the crushing part 10 is communicated with the primary sorting unit to integrate crushing operation and preselection waste throwing operation, so that equipment integration can be realized, the arrangement of an independent preselection belt conveyor and preselection factory building is avoided, the investment cost of the equipment and the factory building is reduced, meanwhile, the deep sorting device has a simple structure and small size, and a plurality of workers are not required to watch equipment, so that the operation cost and maintenance cost of the equipment are reduced.

Claims (10)

1. The utility model provides a degree of depth sorting unit, its characterized in that includes one-level separation unit and second grade separation unit, the second grade separation unit sets up the axial side of one-level separation unit, one-level separation unit includes one-level feed hopper (1) and magnetic separation body (2), magnetic separation body (2) set up the inside of one-level feed hopper (1), magnetic separation body (2) with one-level feed hopper (1) coaxial setting, magnetic separation body (2) are used for right material in one-level feed hopper (1) carries out the primary separation to discharge one-time magnetic separation waste material, second grade separation unit includes second grade feed hopper (3) and magnetic bowl (4), second grade feed hopper (3) with one-level feed hopper (1) are linked together, one-time magnetic separation waste material is followed one-level feed hopper (1) enters into second grade feed hopper (3), magnetic bowl (4) set up the inside of second grade feed hopper (3), magnetic field strength of magnetic bowl (4) is greater than the intensity of magnetic separation body (2), magnetic separation bowl (4) are used for once more magnetic separation waste material.

2. The depth sorting device according to claim 1, characterized in that the primary hopper (1) and the magnetic separator (2) are annular, the cross-sectional area of one end of the primary hopper (1) and the magnetic separator (2) close to the secondary hopper (3) is larger than the cross-sectional area of one end far away from the secondary hopper (3), and the bus inclination angle of the primary hopper (1) and the magnetic separator (2) is A, and A is more than or equal to 70 degrees and less than or equal to 80 degrees.

3. The depth sorting device according to claim 1, wherein the magnetic separator (2) comprises an electromagnetic plate (21), an electric connection ring (22) and a contact switch (23), the electromagnetic plate (21) is electrically connected with the electric connection ring (22) through the contact switch (23), the electromagnetic plate (21) is provided with a plurality of electromagnetic plates (21) which are uniformly arranged along the circumferential direction of the primary hopper (1), the circumferential angle of the cross section of the electromagnetic plate (21) is B, B is less than or equal to 10 degrees and less than or equal to 20 degrees, the circumferential angle of the cross section of the electric connection ring (22) is C, C is less than or equal to 290 degrees and less than or equal to 310 degrees, and the electric connection ring (22) is used for controlling the starting and stopping of the electromagnetic plate (21).

4. The depth sorting device according to claim 1, wherein the primary sorting unit further comprises a rotating shaft (5) and a primary motor (6), the primary motor (6) is connected with the magnetic separator (2) through the rotating shaft (5), and the primary motor (6) drives the magnetic separator (2) to rotate along the circumferential direction of the primary feed hopper through the rotating shaft (5).

5. The depth sorting device according to claim 4, wherein the primary sorting unit further comprises a control module, the control module is electrically connected with the power receiving ring (22), the control module is used for controlling the current intensity of the power receiving ring (22), the control module is electrically connected with the primary motor (6), and the control module is used for controlling the start-stop and rotation speed of the primary motor (6);

and/or the number of the groups of groups,

the magnetic field intensity of the magnetic separator (2) is D, and D is more than or equal to 100mT and less than or equal to 500mT.

6. The depth sorting device according to claim 1, characterized in that the magnetic roller (4) comprises a permanent magnet (41), the permanent magnet (41) is arranged inside the magnetic roller (4) along the circumferential direction of the magnetic roller (4) and extends in the axial direction of the magnetic roller (4), the permanent magnet (41) is fan-shaped, the circumferential angle of the cross section of the permanent magnet (41) is E, E is 110 degrees less than or equal to 130 degrees, the magnetic field strength of the permanent magnet (41) is F, and F is 1.1D less than or equal to 1.2D.

7. The depth sorting device according to claim 6, wherein the secondary sorting unit further comprises a secondary motor (7), the secondary motor (7) is connected with the magnetic roller (4), and the secondary motor (7) drives the magnetic roller (4) to rotate along the circumferential direction of the magnetic roller (4) so as to enable the material adsorbed by the permanent magnet (41) to fall off from the magnetic roller (4).

8. The deep sorting device according to claim 1, characterized in that the magnetic separation device further comprises a primary discharge hopper (8), the primary discharge hopper (8) comprises a primary ore discharge cavity (81) and a primary waste rock discharge cavity (82), the primary feed hopper (1) is communicated with the primary feed hopper (1) through the primary waste rock discharge cavity (82), and the primary magnetic separation waste is discharged into the secondary feed hopper (3) through the primary waste rock discharge cavity (82).

9. A depth sorting device according to claim 1, characterized in that the secondary hopper (3) comprises a secondary ore discharge chamber (12) and a secondary waste rock discharge chamber (13), the magnetic ore separated by the secondary sorting unit being discharged via the secondary ore discharge chamber (12), the secondary magnetic separation waste separated by the secondary sorting unit being discharged via the secondary waste rock discharge chamber (13), the secondary sorting unit further comprising a partition plate (9), the partition plate (9) being connected to the secondary hopper (3) by means of a base, the partition plate (9) being arranged on the side of the magnetic roller (4) remote from the primary hopper (1), the partition plate (9) extending in the radial direction of the secondary hopper (3), the partition plate (9) comprising a first guide surface and a second guide surface, the top end of the first guide surface being joined to the top end of the second guide surface to form a spike, the bottom end of the first guide surface extending towards the secondary ore discharge chamber (12) towards the bottom end of the secondary waste rock discharge chamber (13).

10. The depth sorting device according to claim 1, characterized in that the magnetic separation device further comprises a crushing portion (10), the crushing portion (10) is arranged on one side of the primary sorting unit away from the secondary sorting unit, the crushing portion (10) is communicated with the primary sorting unit, and the crushing portion (10) is coaxially arranged with the primary sorting unit.

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