Magnetic ore dressing device and method based on copper tailings

Abstract

The invention discloses a magnetic ore dressing device and method based on copper tailings, and relates to the technical field of magnetic ore dressing. The device comprises a material storage barrel, a material distribution mechanism is arranged at the bottom of the material storage barrel, the material distribution mechanism comprises a first discharging piece and a second discharging piece, a first magnetic separation mechanism is arranged at a discharging port of the first discharging piece, and a second magnetic separation mechanism is arranged at a discharging port of the second discharging piece; the first magnetic separation mechanism comprises a first magnetic separation box and a first magnetic separation part arranged in the first magnetic separation box, the first magnetic separation box corresponds to a discharging port of the first discharging part, the second magnetic separation mechanism comprises a second magnetic separation box and a second magnetic separation part arranged in the second magnetic separation box, and the second magnetic separation box is arranged at the bottom of a discharging port of the second discharging part; and a buoyancy magnetic separation mechanism is arranged outside the second magnetic separation box. The problems that during magnetic separation of copper tailings, the mineral separation precision is low, magnetic separation cannot be conducted continuously, tailings treatment is not fine, magnetic material separation is difficult, the collection and treatment efficiency is low, and resources are wasted are solved.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic ore dressing, and in particular to a magnetic ore dressing device and method based on copper tailings. Background Art

[0002] There are various magnetic separation devices for copper tailings. Permanent magnetic drum separators use permanent magnetic materials to generate magnetic fields. They are divided into various types according to the tank structure, with low energy consumption and adaptability to different particle sizes. Magnetic dewatering tanks rely on the combination of magnetic force and gravity, with a simple structure but high water consumption. Magnetic concentration machines can reduce fine grinding consumption and improve concentrate quality. Dry drum separators are used for drying materials and are suitable for specific moisture content requirements. Magnetic drums have permanent and electromagnetic types and can handle large particles. Permanent magnetic vertical ring separators have adjustable magnetic fields, which can reduce tailing and over-grinding. Wet strong magnetic plate separators have high magnetic field strength and have the advantages of energy saving and large processing capacity. These devices have their own characteristics and are suitable for magnetic separation of copper tailings under different working conditions.

[0003] However, some existing magnetic separation devices have problems such as low separation accuracy, inability to conduct uninterrupted magnetic separation, imprecise tailings treatment, difficulty in separating magnetic materials, low collection and treatment efficiency, and waste of resources. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a magnetic beneficiation device and method based on copper tailings, which solves the problems of low beneficiation accuracy, inability to carry out uninterrupted magnetic separation, imprecise tailings treatment, difficulty in separating magnetic materials, low collection and treatment efficiency and waste of resources during magnetic separation of copper tailings.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a magnetic ore dressing device and method based on copper tailings, comprising a storage barrel, a dividing mechanism is arranged at the bottom of the storage barrel, the dividing mechanism comprises a first discharging piece and a second discharging piece, a first magnetic separation mechanism is arranged at the discharging port of the first discharging piece, and a second magnetic separation mechanism is arranged at the discharging port of the second discharging piece; the first magnetic separation mechanism comprises a first magnetic separation box and a first magnetic separation component arranged inside the first magnetic separation box, the first magnetic separation box corresponds to the discharging port of the first discharging piece, the second magnetic separation mechanism comprises a second magnetic separation box and a second magnetic separation component arranged inside the second magnetic separation box, and the second magnetic separation box is arranged at the bottom of the discharging port of the second discharging piece; a buoyancy magnetic separation mechanism is arranged outside the second magnetic separation box.

[0006] Furthermore, the first magnetic separation component includes a magnetic box fixedly connected to the inside of the first magnetic separation box, a driving roller arranged inside the magnetic box and a magnetic separation assembly arranged inside the magnetic box, the magnetic separation assembly includes a first magnetic assembly, a second magnetic assembly and a third magnetic assembly, and the surfaces of the driving roller and the magnetic separation assembly are connected to the conveyor belt; the interior of the first magnetic separation box is separated by a partition to form a crushing area, a first collection area, a second collection area and a third collection area, the first collection area is arranged at the bottom of the third magnetic assembly, the second collection area is arranged at the bottom of the second magnetic assembly, the crushing area is arranged on a side close to the first collection area, and the third collection area is arranged on a side close to the second collection area; the bottoms of the crushing area, the first collection area, the second collection area and the third collection area are all provided with solenoid valves; a crushing roller is also provided inside the crushing area.

[0007] Furthermore, the dividing mechanism also includes a separator, a separation cover and a fixed frame, the surface of the separator is fixedly connected with a dividing strip, the dividing strip is used to divide the surface of the separator into an even number of storage areas, and the storage areas are greater than or equal to four, and the surface of the dividing strip is movably connected to the surface of the separation cover; the separation cover is fixedly connected to the first discharging piece and the second discharging piece, and the bottom of the separator is also movably provided with a dividing plate, the dividing plate is movably connected to the separation cover, the surface of the dividing plate is fixedly connected with a first rotating motor, the output shaft of the first rotating motor movably passes through the dividing plate and is fixedly connected to the separator; the dividing plate is movably connected to the second discharging piece, and the bottom of the dividing plate is fixedly connected with a connecting frame, the surface of the connecting frame is fixedly connected to the output shaft of the second rotating motor, and the second rotating motor is fixedly connected to the second discharging piece through the connecting plate; a crushing assembly is provided between the second discharging piece and the second magnetic separation mechanism, and the second discharging piece is fixedly connected to the fixed frame.

[0008] Furthermore, the crushing assembly includes a crushing motor, a rotating block and a crushing tooth column, the crushing motor is fixedly connected to the top of the second discharging piece, the crushing motor output shaft movably passes through the second discharging piece and is fixedly connected to the rotating block, and the crushing tooth column is movably connected to the surface of the rotating block through a connecting shaft; the bottom of the second discharging piece is also fixedly connected to an inner tooth ring, and the bottom of the inner tooth ring is fixedly connected to a filter screen, and the filter screen is used to input the crushed copper tailings into the interior of the second magnetic separation component.

[0009] Furthermore, the second magnetic separation component includes an electromagnetic column and an annular mesh cover, the surface of the fixed frame is fixedly connected with a rotating motor, the output shaft of the rotating motor is fixedly connected to the support plate, and the electromagnetic column and the annular mesh cover are both fixedly connected to the surface of the support plate; the surface of the support plate is fixedly connected to the second magnetic separation box through a square rod; the surface of the electromagnetic column is provided with a magnetic material separation component, and the magnetic material separation component is used to transfer the magnetic material on the electromagnetic column to the outside of the annular mesh cover.

[0010] Furthermore, the magnetic material separation component includes a cover body movably arranged at the top and bottom of the electromagnetic column, the cover body at the top of the electromagnetic column is fixedly connected to the filter screen through a fixed column, an electric push rod is fixedly connected to the cover body, the output shaft of the electric push rod is fixedly connected to a scraper, the scraper includes an abutment portion, a hollow portion and a material blocking portion, the abutment portion, the hollow portion and the material blocking portion are integrally formed, the surface of the hollow portion is uniformly arrayed with fine material holes, the top of the hollow portion is fixedly connected to a discharge hose, and the discharge hose is used to be connected to an external vacuum device.

[0011] Furthermore, the bottom of the second magnetic separation box is connected to a slag collection box via a connecting bearing, and the slag collection box is fixedly connected to a liquid inlet valve and a liquid extraction valve, and the liquid extraction valve is used to connect to an external liquid extraction device to transport the slurry in the slag collection box to the buoyancy magnetic separation mechanism for buoyancy magnetic separation.

[0012] Furthermore, the buoyancy magnetic separation mechanism includes a magnetic flotation box, which is fixedly connected to a fixed frame, a fixed rod is fixedly connected to the inside of the magnetic flotation box, an electromagnetic rod is fixedly connected to the surface of the fixed rod, the electromagnetic rod is composed of a plurality of electromagnetic blocks, and an underwater suction assembly is provided on the surface of the electromagnetic rod; a hollow suction frame is fixedly connected to the top of the fixed rod, and a suction pipe is fixedly connected to the bottom of the hollow suction frame.

[0013] Furthermore, the underwater material suction assembly includes a hollow material suction slider, the surface of the hollow material suction slider is fixedly connected to an electric control valve, the top of the hollow material suction slider is also provided with a connecting pipe, the surface of the electromagnetic rod is fixedly connected to a positioning rod, the surface of the positioning rod is movably sleeved with a limit block, and the limit block is fixedly connected to the hollow material suction slider; the surface of the hollow material suction slider is also connected to a sliding wheel, the surface of the sliding wheel is connected to a steel wire rope, the steel wire rope is fixedly connected to the limit block, and the sliding wheel is driven by a driving motor.

[0014] A magnetic separation method based on copper tailings is used for the above-mentioned magnetic separation device based on copper tailings, comprising the following steps: placing the copper tailings to be magnetically separated in a storage barrel, and intermittently feeding the copper tailings to a first magnetic separation mechanism after passing through a material separation mechanism; the first magnetic separation mechanism performs preliminary magnetic separation on the copper tailings to obtain preliminary magnetically separated copper tailings and screened miscellaneous materials, and collects the preliminary magnetically separated copper tailings and the screened miscellaneous materials; in the process of collecting the preliminary magnetically separated copper tailings and the screened miscellaneous materials, a second magnetic separation mechanism is started to perform screening in place of the first magnetic separation mechanism; the miscellaneous materials screened by the second magnetic separation mechanism are screened again by a buoyancy magnetic separation mechanism; the magnetic copper tailings obtained by the first magnetic separation mechanism, the second magnetic separation mechanism and the buoyancy magnetic separation mechanism are collected, and are roughly separated again by a Slon-500 magnetic separator, and then are finely separated by a centrifuge; the finely separated copper tailings are scavenged by tailings, and then scavenged by an SL-500 magnetic separator to obtain strong magnetic concentrate and strong magnetic tailings.

[0015] The present invention has the following beneficial effects: The magnetic beneficiation device and method based on copper tailings can realize graded magnetic separation of copper tailings by cooperating with different magnetic separation mechanisms, thereby improving the beneficiation accuracy; by setting a plurality of collection areas and crushing areas, tailings with different characteristics can be classified and processed, and the electromagnetic valve and the external dust suction equipment are used to facilitate the storage of tailings; the second magnetic separation mechanism is started when the first magnetic separation mechanism is processing, thereby realizing uninterrupted magnetic separation and improving production efficiency; the crushing component can further crush the tailings, thereby facilitating subsequent magnetic separation; the magnetic material separation component can effectively separate the magnetic material on the electromagnetic column; the buoyancy magnetic separation mechanism performs secondary magnetic separation on the tailings, thereby further improving the beneficiation purity; and a series of components are used to realize efficient collection and processing of mineral materials in different states, thereby reducing resource waste and improving the comprehensive utilization efficiency of copper tailings.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the first magnetic separation box of the present invention.

[0019] Figure 3 It is a schematic diagram of the internal structure of the magnetic box of the present invention.

[0020] Figure 4 It is a schematic diagram of the internal structure of the storage barrel of the present invention.

[0021] Figure 5 This is a schematic diagram of the internal structure of the second magnetic separation box of the present invention.

[0022] Figure 6It is a schematic diagram of the internal structure of the annular mesh cover of the present invention.

[0023] Figure 7 It is a schematic diagram of the internal structure of the magnetic flotation box of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the connecting frame of the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the second material discharging piece of the present invention.

[0026] Fig.10 It is a structural schematic diagram of the material dividing plate of the present invention.

[0027] Fig.11 It is a structural schematic diagram of the electromagnetic column of the present invention.

[0028] Fig.12 It is a structural schematic diagram of the material blocking portion of the present invention.

[0029] Fig.13 It is a structural schematic diagram of the electromagnetic rod of the present invention.

[0030] Fig.14 It is a structural schematic diagram of the hollow material suction slider of the present invention.

[0031] In the figure, 1, storage barrel; 2, first discharging member; 3, second discharging member; 4, first magnetic separation box; 5, second magnetic separation box; 6, magnetic box; 7, driving roller; 8, first magnetic assembly; 9, second magnetic assembly; 10, third magnetic assembly; 11, conveyor belt; 12, solenoid valve; 13, crushing roller; 14, separator; 15, separation cover; 16, fixed frame; 17, dividing strip; 18, material dividing plate; 19, first rotating motor; 20, connecting frame; 21, second rotating motor; 22, crushing motor; 23, rotating block; 24, crushing tooth column; 25, inner gear ring; 26, Filter; 27. Electromagnetic column; 28. Annular mesh cover; 29. ​​Rotating motor; 30. Support plate; 31. Driving motor; 32. Cover; 33. Electric push rod; 34. Abutment part; 35. Hollow part; 36. Material blocking part; 37. Discharge hose; 38. Slag collection box; 39. Liquid inlet valve; 40. Liquid extraction valve; 41. Magnetic flotation box; 42. Fixed rod; 43. Electromagnetic rod; 44. Hollow suction rack; 45. Suction pipe; 46. Hollow suction slider; 47. Electric control valve; 48. Connecting pipe; 49. Positioning rod; 50. Limit block; 51. Sliding wheel; 52. Wire rope. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] See also Figure 1-Figure 14 The embodiment of the present invention provides a technical solution: a magnetic ore dressing device and method based on copper tailings, comprising a storage barrel 1, a material dividing mechanism is arranged at the bottom of the storage barrel 1, the material dividing mechanism comprises a first discharge piece 2 and a second discharge piece 3, a first magnetic separation mechanism is arranged at the discharge port of the first discharge piece 2, and a second magnetic separation mechanism is arranged at the discharge port of the second discharge piece 3; the first magnetic separation mechanism comprises a first magnetic separation box 4 and a first magnetic separation component arranged inside the first magnetic separation box 4, the first magnetic separation box 4 corresponds to the discharge port of the first discharge piece 2, the second magnetic separation mechanism comprises a second magnetic separation box 5 and a second magnetic separation component arranged inside the second magnetic separation box 5, the second magnetic separation box 5 is arranged at the bottom of the discharge port of the second discharge piece 3; a buoyancy magnetic separation mechanism is arranged outside the second magnetic separation box 5.

[0035] Specifically, the first magnetic separation component includes a magnetic box 6 fixedly connected to the inside of the first magnetic separation box 4, a driving roller 7 arranged inside the magnetic box 6 and a magnetic separation component arranged inside the magnetic box 6, the magnetic separation component includes a first magnetic component 8, a second magnetic component 9 and a third magnetic component 10, and the surfaces of the driving roller 7 and the magnetic separation component are connected to the conveyor belt 11; the inside of the first magnetic separation box 4 is separated by a partition to provide a crushing area, a first collection area, a second collection area and a third collection area, the first collection area is arranged at the bottom of the third magnetic component 10, the second collection area is arranged at the bottom of the second magnetic component 9, the crushing area is arranged on a side close to the first collection area, and the third collection area is arranged on a side close to the second collection area; the bottom of the crushing area, the first collection area, the second collection area and the third collection area are all provided with an electromagnetic valve 12; the inside of the crushing area is also provided with a crushing roller 13.

[0036] In this embodiment, when the crushing area, the first collection area, the second collection area and the third collection area are processed by the external dust collection equipment, the second magnetic separation mechanism is started to achieve uninterrupted magnetic separation and improve production efficiency.

[0037] Specifically, the material dividing mechanism also includes a separator 14, a separation cover 15 and a fixing frame 16. The surface of the separator 14 is fixedly connected with a dividing strip 17, and the dividing strip 17 is used to divide the surface of the separator 14 into an even number of storage areas, and the storage areas are greater than or equal to four. The surface of the dividing strip 17 is movably connected to the surface of the separation cover 15; the separation cover 15 is fixedly connected to the first discharge piece 2 and the second discharge piece 3. The bottom of the separator 14 is also movably provided with a dividing plate 18, and the dividing plate 18 is movably connected to the separation cover 15. A first rotating motor 19 is fixedly connected to the surface of the material separation mechanism, and the output shaft of the first rotating motor 19 movably passes through the dividing plate 18 and is fixedly connected to the separator 14; the dividing plate 18 is movably connected to the second discharging piece 3, and a connecting frame 20 is fixedly connected to the bottom of the dividing plate 18, and the surface of the connecting frame 20 is fixedly connected to the output shaft of the second rotating motor 21, and the second rotating motor 21 is fixedly connected to the second discharging piece 3 through the connecting plate; a crushing assembly is arranged between the second discharging piece 3 and the second magnetic separation mechanism, and the second discharging piece 3 is fixedly connected to the fixed frame 16.

[0038] In this embodiment, copper tailings to be magnetically separated are placed in the storage barrel 1, the separator 14 rotates under the action of the first rotating motor 19, the dividing bar 17 drives the copper tailings to move, enters the separation cover 15, and then falls onto the first discharge piece 2 through the gap between the dividing plate 18 and the separation cover 15, and enters the first magnetic separation box 4 through the first discharge piece 2. The copper tailings fall freely and fall onto the conveyor belt 11.

[0039] When the second magnetic separation mechanism is started, the second rotating motor 21 drives the dividing plate 18 to rotate, and the dividing plate 18 drives the separator 14 to rotate through the first rotating motor 19. When the gap on the dividing plate 18 does not correspond to the separation cover 15, the copper tailings fall into the interior of the second discharging piece 3 and then enter the crushing assembly.

[0040] Specifically, the crushing assembly includes a crushing motor 22, a rotating block 23 and a crushing tooth column 24. The crushing motor 22 is fixedly connected to the top of the second discharging member 3. The output shaft of the crushing motor 22 movably passes through the second discharging member 3 and is fixedly connected to the rotating block 23. The crushing tooth column 24 is movably connected to the surface of the rotating block 23 through a connecting shaft; the bottom of the second discharging member 3 is also fixedly connected to an inner gear ring 25, and the bottom of the inner gear ring 25 is fixedly connected to a filter screen 26, and the filter screen 26 is used to input the crushed copper tailings into the interior of the second magnetic separation component.

[0041] In this embodiment, when the notch on the dividing plate 18 does not correspond to the separation cover 15, the copper tailings fall into the interior of the second discharging piece 3, and then enter the crushing assembly. The rotating block 23 rotates under the action of the crushing motor 22, and the crushing tooth column 24 causes the copper tailings to rub against the teeth on the inner gear ring 25 and crush them into smaller particles, and then pass through the filter screen 26 into the interior of the annular mesh cover 28.

[0042] Specifically, the second magnetic separation component includes an electromagnetic column 27 and an annular mesh cover 28. The surface of the fixed frame 16 is fixedly connected to a rotating motor 29. The output shaft of the rotating motor 29 is fixedly connected to a support plate 30. The electromagnetic column 27 and the annular mesh cover 28 are both fixedly connected to the surface of the support plate 30. The surface of the support plate 30 is fixedly connected to the second magnetic separation box 5 through a square rod. The surface of the electromagnetic column 27 is provided with a magnetic material separation component, which is used to transfer the magnetic material on the electromagnetic column 27 to the outside of the annular mesh cover 28.

[0043] In this embodiment, under the influence of the magnetic force of the electromagnetic column 27, the magnetic copper tailings are adsorbed onto the electromagnetic column 27, while the remaining copper tailings move downward to the support plate 30. The rotating motor 29 drives the support plate 30 to rotate, thereby driving the electromagnetic column 27 and the annular mesh cover 28 to rotate. The copper tailings that fall onto the support plate 30 are thrown out of the annular mesh cover 28 under the action of centrifugal force, and then fall into the slag collection box 38 for collection.

[0044] Specifically, the magnetic material separation component includes a cover body 32 movably arranged at the top and bottom of the electromagnetic column 27, the cover body 32 is connected to the electromagnetic column 27 through a limit bearing, the cover body 32 at the top of the electromagnetic column 27 is fixedly connected to the filter screen 26 through a fixed column, an electric push rod 33 is fixedly connected to the cover body 32, the output shaft of the electric push rod 33 is fixedly connected to the scraper, the scraper includes an abutment portion 34, a hollow portion 35 and a material blocking portion 36, the abutment portion 34, the hollow portion 35 and the material blocking portion 36 are integrally formed, the surface of the hollow portion 35 is uniformly arrayed with fine material holes, the top of the hollow portion 35 is fixedly connected to a discharge hose 37, and the discharge hose 37 is used to connect to an external vacuum cleaner.

[0045] In this embodiment, when the mineral material on the electromagnetic column 27 accumulates to a certain thickness, the electric push rod 33 is started, the scraper is in contact with the electromagnetic column 27, and the abutment portion 34 scrapes out the mineral material. At the same time, the hollow portion 35 sucks away the mineral material under the action of the discharge hose 37. The blocking portion 36 can prevent the mineral material from being too dispersed, which is not conducive to collection.

[0046] Specifically, the bottom of the second magnetic separation box 5 is connected to a slag collection box 38 via a connecting bearing. The slag collection box 38 is fixedly connected to a liquid inlet valve 39 and a liquid extraction valve 40. The liquid extraction valve 40 is used to connect to an external liquid extraction device to transport the slurry in the slag collection box 38 to the buoyancy magnetic separation mechanism for buoyancy magnetic separation.

[0047] Specifically, the buoyancy magnetic separation mechanism includes a magnetic flotation box 41, which is fixedly connected to a fixed frame 16. A fixed rod 42 is fixedly connected to the inside of the magnetic flotation box 41, and an electromagnetic rod 43 is fixedly connected to the surface of the fixed rod 42. The electromagnetic rod 43 is composed of a plurality of electromagnetic blocks, and an underwater suction assembly is provided on the surface of the electromagnetic rod 43; a hollow suction frame 44 is fixedly connected to the top of the fixed rod 42, and a suction pipe 45 is fixedly connected to the bottom of the hollow suction frame 44.

[0048] In this embodiment, the liquid inlet valve 39 can inject liquid into the slag collection box 38 to prepare slurry, which is then extracted through the liquid extraction valve 40 and transported to the magnetic flotation box 41. When a flotation agent is added to the magnetic flotation box 41, the mineral materials with smaller particles will float up. During this process, the magnetic mineral materials will be adsorbed by the electromagnetic rod 43, and the mineral materials without magnetic separation will float to the surface of the liquid and be sucked away by the suction pipe 45.

[0049] Specifically, the underwater material suction assembly includes a hollow material suction slider 46, the surface of which is fixedly connected to an electric control valve 47, and a connecting pipe 48 is also provided on the top of the hollow material suction slider 46; the surface of the electromagnetic rod 43 is fixedly connected to a positioning rod 49, and the surface of the positioning rod 49 is movably sleeved with a limit block 50, and the limit block 50 is fixedly connected to the hollow material suction slider 46; the surface of the hollow material suction slider 46 is also connected to a sliding wheel 51, and the surface of the sliding wheel 51 is connected to a steel wire rope 52, and the steel wire rope 52 is fixedly connected to the limit block 50, and the sliding wheel 51 is driven by a driving motor 31.

[0050] In this embodiment, the driving motor 31 drives the sliding wheel 51 to rotate, so that the hollow suction slider 46 can move to the position of a certain electromagnetic block. At this time, the electromagnetic block is controlled to be powered off and lose its magnetic force. At the same time, the electric control valve 47 is started, and the connecting pipe 48 sucks away the mineral material under the action of the external suction equipment.

[0051] A magnetic separation method based on copper tailings, used in the above-mentioned magnetic separation device based on copper tailings, comprises the following steps: placing the copper tailings to be magnetically separated in a storage barrel (1), and intermittently feeding the copper tailings to a first magnetic separation mechanism after passing through a material separation mechanism; performing preliminary magnetic separation on the copper tailings by the first magnetic separation mechanism to obtain preliminary magnetically separated copper tailings and screened miscellaneous materials, and collecting the preliminary magnetically separated copper tailings and the screened miscellaneous materials; in the process of collecting the preliminary magnetically separated copper tailings and the screened miscellaneous materials, starting a second magnetic separation mechanism to perform screening in place of the first magnetic separation mechanism; the miscellaneous materials screened by the second magnetic separation mechanism are screened again by a buoyancy magnetic separation mechanism; collecting the magnetic copper tailings obtained by the first magnetic separation mechanism, the second magnetic separation mechanism and the buoyancy magnetic separation mechanism, and performing rough separation again by a Slon-500 magnetic separator, and then performing fine separation by a centrifuge; performing tailings scavenging on the finely separated copper tailings, and then performing scavenging on the SL-500 magnetic separator, to obtain a strong magnetic concentrate and a strong magnetic tailings.

[0052]

[0053] The above table shows the test results of taking two 400g samples, sorting them twice by SL-400 centrifuge, combining the two heavy concentrates and heavy tails respectively, filtering and drying the heavy concentrates, taking 200g samples after filtering the heavy tails, grinding for 40 minutes, and the fineness of -400 mesh accounts for more than 90%. From the data of this scheme, the total yield of garnet reached 30.95+7.54=38.49%, and the recovery rate reached 49.67+13.10=62.77%.

[0054] When in use, the fixing frame 16 is fixed, the fixing frame 16 is fixedly connected to the second discharging member 3, the second discharging member 3 is fixed to the first discharging member 2, and the first discharging member 2 is fixed to the separation cover 15, the dividing plate 18 is movably connected to the separation cover 15, and the copper tailings to be magnetically separated are placed in the storage barrel 1, and the separator 14 rotates under the action of the first rotating motor 19. At this time, the second rotating motor 21 does not rotate, the dividing plate 18 does not rotate, and the dividing bar 17 drives the copper tailings to move and enter the separation cover 15. Then, through the gap between the dividing plate 18 and the separation cover 15, it falls onto the first discharging member 2, enters the first magnetic separation box 4 through the first discharging member 2, and the copper tailings fall freely and fall onto the conveyor belt 11. The first magnetic component 8, the second magnetic component 9 and the third magnetic component 10 are energized to generate magnetic force, and the magnetic force of the first magnetic component 8 is greater than the magnetic force of the second magnetic component 9, and the magnetic force of the second magnetic component 9 is greater than the magnetic force of the third magnetic component 10. The conveyor belt 11 is constantly moving. Under the action of magnetic force, the copper tailings containing magnetic substances are adsorbed on the conveyor belt 11 and move. Some non-magnetic impurities are transported to the third collection area by the conveyor belt 11. Copper tailings with relatively large particles fall into the second collection area, and copper tailings with even larger particles fall into the first collection area. The partition between the first collection area and the crushing area can scrape out the remaining copper tailings that have not fallen and drop them into the first collection area.

[0055] The copper tailings that are not adsorbed by the conveyor belt 11 have the problem of large particles and fall into the crushing area for crushing. The bottom of the crushing area, the first collection area, the second collection area and the third collection area are all provided with electromagnetic valves 12. When the electromagnetic valves 12 are opened, the treated copper tailings can be absorbed and stored separately through the external dust collection equipment. The copper tailings crushed in the crushing area will be placed in the buoyancy magnetic separation mechanism for secondary magnetic separation.

[0056] When the crushing area, the first collection area, the second collection area and the third collection area are processed by the external dust collection equipment, the second magnetic separation mechanism is started. The second rotating motor 21 drives the dividing plate 18 to rotate, and the dividing plate 18 drives the separator 14 to rotate through the first rotating motor 19. When the gap on the dividing plate 18 does not correspond to the separation cover 15, the copper tailings fall into the interior of the second discharging member 3, and then enter the crushing assembly. The inner gear ring 25 is fixedly connected to the second discharging member 3, and the rotating block 23 rotates under the action of the crushing motor 22. The crushing tooth column 24 causes the copper tailings to rub against the teeth on the inner gear ring 25 and crush them into smaller particles, and then pass through the filter screen 26 to enter the interior of the annular mesh cover 28.

[0057] Under the influence of the magnetic force of the electromagnetic column 27, the magnetic copper tailings are adsorbed onto the electromagnetic column 27, and the remaining copper tailings will move downward to the support plate 30. The rotating motor 29 is fixed on the fixed frame 16, and the slag collection box 38 is also fixed on the fixed frame 16. The rotating motor 29 drives the support plate 30 to rotate, thereby driving the electromagnetic column 27 and the annular mesh cover 28 to rotate through the support plate 30. At the same time, the second magnetic separation box 5 also rotates, and the copper tailings that fall onto the support plate 30 are thrown out of the outside of the annular mesh cover 28 under the action of centrifugal force, and then fall into the slag collection box 38 for collection. A connecting bearing connected to the slag collection box 38 is provided at the bottom of the second magnetic separation box 5, which does not hinder rotation.

[0058] The cover 32 is connected to the electromagnetic column 27 through a limit bearing, and the bottom cover 32 is movably penetrated by the output shaft of the rotating motor 29. Under the action of the fixed column, during the rotation of the electromagnetic column 27 and the annular mesh cover 28, the cover 32 does not rotate, and the scraper does not rotate. When the mineral material on the electromagnetic column 27 accumulates to a certain thickness, the electric push rod 33 is started, and the scraper is in contact with the electromagnetic column 27, and the contact part 34 scrapes the mineral material out. At the same time, the hollow part 35 sucks away the mineral material under the action of the discharge hose 37, and the material blocking part 36 can prevent the mineral material from being too dispersed, which is not conducive to collection. At the same time, the fine material holes on the hollow part 35 can further screen the particles. When the discharge hose 37 has no suction and the scraper is separated from the electromagnetic column 27, some copper tailings with larger particles will fall onto the support plate 30 and be thrown into the slag collection box 38 under the action of centrifugal force.

[0059] The liquid inlet valve 39 can inject liquid into the slag collection box 38 to prepare slurry, which is then extracted through the liquid extraction valve 40 and transported to the magnetic flotation box 41. When the flotation agent is added to the magnetic flotation box 41, the mineral material with smaller particles will float up. In this process, the magnetic mineral material will be adsorbed by the electromagnetic rod 43, and the mineral material without magnetic separation will float to the surface of the liquid and be sucked away by the suction pipe 45. The electromagnetic rod 43 is composed of a plurality of electromagnetic blocks, which can be controlled to be turned on and off one by one. The driving motor 31 drives the sliding wheel 51 to rotate, so that the hollow suction slider 46 can move to the position of a certain electromagnetic block. At this time, the electromagnetic block is controlled to be powered off and lose its magnetic force. At the same time, the electric control valve 47 is started, and the connecting pipe 48 sucks away the mineral material under the action of the external suction device. A discharge valve is provided at the bottom of the magnetic flotation box 41 to discharge impurities.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A magnetic separation device based on copper tailings, comprising a storage barrel (1), characterized in that: A material separation mechanism is provided at the bottom of the material storage barrel (1), the material separation mechanism comprising a first material discharging member (2) and a second material discharging member (3), a first magnetic separation mechanism is provided at the material discharging port of the first material discharging member (2), and a second magnetic separation mechanism is provided at the material discharging port of the second material discharging member (3); The first magnetic separation mechanism comprises a first magnetic separation box (4) and a first magnetic separation component arranged inside the first magnetic separation box (4), the first magnetic separation box (4) corresponding to the discharge port of the first discharge member (2), the second magnetic separation mechanism comprises a second magnetic separation box (5) and a second magnetic separation component arranged inside the second magnetic separation box (5), the second magnetic separation box (5) being arranged at the bottom of the discharge port of the second discharge member (3); A buoyancy magnetic separation mechanism is arranged outside the second magnetic separation box (5).

2. A magnetic separation device based on copper tailings according to claim 1, characterized in that: The first magnetic separation component comprises a magnetic box (6) fixedly connected to the inside of the first magnetic separation box (4), a driving roller (7) arranged inside the magnetic box (6), and a magnetic separation component arranged inside the magnetic box (6), the magnetic separation component comprising a first magnetic component (8), a second magnetic component (9) and a third magnetic component (10), and the surfaces of the driving roller (7) and the magnetic separation component are both connected to a conveyor belt (11); The first magnetic separation box (4) is provided with a crushing area, a first collection area, a second collection area and a third collection area separated by a partition, the first collection area is provided at the bottom of the third magnetic assembly (10), the second collection area is provided at the bottom of the second magnetic assembly (9), the crushing area is provided at a side close to the first collection area, and the third collection area is provided at a side close to the second collection area; The bottoms of the crushing area, the first collecting area, the second collecting area and the third collecting area are all provided with electromagnetic valves (12); A crushing roller (13) is also provided inside the crushing zone.

3. A magnetic separation device based on copper tailings according to claim 1, characterized in that: The material dividing mechanism further comprises a separator (14), a separation cover (15) and a fixing frame (16); a dividing bar (17) is fixedly connected to the surface of the separator (14); the dividing bar (17) is used to divide the surface of the separator (14) into an even number of material storage areas, and the material storage areas are greater than or equal to four; the surface of the dividing bar (17) is movably connected to the surface of the separation cover (15); The separation cover (15) is fixedly connected to the first discharge member (2) and the second discharge member (3); a separation plate (18) is movably provided at the bottom of the separator (14); the separation plate (18) is movably connected to the separation cover (15); a first rotating motor (19) is fixedly connected to the surface of the separation plate (18); an output shaft of the first rotating motor (19) movably passes through the separation plate (18) and is fixedly connected to the separator (14); The dividing plate (18) is movably connected to the second discharging member (3); a connecting frame (20) is fixedly connected to the bottom of the dividing plate (18); a surface of the connecting frame (20) is fixedly connected to the output shaft of the second rotating motor (21); and the second rotating motor (21) is fixedly connected to the second discharging member (3) via the connecting plate; A crushing assembly is provided between the second discharge piece (3) and the second magnetic separation mechanism, and the second discharge piece (3) is fixedly connected to the fixing frame (16).

4. A magnetic separation device based on copper tailings according to claim 3, characterized in that: The crushing assembly comprises a crushing motor (22), a rotating block (23) and a crushing tooth column (24); the crushing motor (22) is fixedly connected to the top of the second discharge member (3); an output shaft of the crushing motor (22) movably passes through the second discharge member (3) and is fixedly connected to the rotating block (23); and the crushing tooth column (24) is movably connected to the surface of the rotating block (23) via a connecting shaft; The bottom of the second discharge member (3) is also fixedly connected to an inner toothed ring (25), and the bottom of the inner toothed ring (25) is fixedly connected to a filter screen (26), and the filter screen (26) is used to input the crushed copper tailings into the interior of the second magnetic separation component.

5. A magnetic separation device based on copper tailings according to claim 4, characterized in that: The second magnetic separation component comprises an electromagnetic column (27) and an annular mesh cover (28); a rotating motor (29) is fixedly connected to the surface of the fixed frame (16); an output shaft of the rotating motor (29) is fixedly connected to a support plate (30); and the electromagnetic column (27) and the annular mesh cover (28) are both fixedly connected to the surface of the support plate (30); The surface of the support plate (30) is fixedly connected to the second magnetic separation box (5) via a square rod; A magnetic material separation component is provided on the surface of the electromagnetic column (27), and the magnetic material separation component is used to transfer the magnetic material on the electromagnetic column (27) to the outside of the annular mesh cover (28).

6. A magnetic separation device based on copper tailings according to claim 5, characterized in that: The magnetic material separation component comprises a cover body (32) movably arranged at the top and bottom of the electromagnetic column (27); the cover body (32) at the top of the electromagnetic column (27) is fixedly connected to the filter screen (26) via a fixing column; an electric push rod (33) is fixedly connected to the cover body (32); the output shaft of the electric push rod (33) is fixedly connected to a scraper; the scraper comprises an abutment portion (34), a hollow portion (35) and a material stopper portion (36); the abutment portion (34), the hollow portion (35) and the material stopper portion (36) are integrally formed; a surface of the hollow portion (35) is uniformly arrayed with fine material holes; a discharge hose (37) is fixedly connected to the top of the hollow portion (35); the discharge hose (37) is used to be connected to an external dust collection device.

7. A magnetic separation device based on copper tailings according to claim 5, characterized in that: The bottom of the second magnetic separation box (5) is connected to a slag collection box (38) via a connecting bearing, and the slag collection box (38) is fixedly connected to a liquid inlet valve (39) and a liquid extraction valve (40), and the liquid extraction valve (40) is used to connect to an external liquid extraction device to transport the slurry in the slag collection box (38) to the buoyancy magnetic separation mechanism for buoyancy magnetic separation.

8. A magnetic separation device based on copper tailings according to claim 3, characterized in that: The buoyancy magnetic separation mechanism comprises a magnetic flotation box (41), the magnetic flotation box (41) being fixedly connected to a fixing frame (16), a fixing rod (42) being fixedly connected inside the magnetic flotation box (41), an electromagnetic rod (43) being fixedly connected to the surface of the fixing rod (42), the electromagnetic rod (43) being composed of a plurality of electromagnetic blocks, and a water material suction component being arranged on the surface of the electromagnetic rod (43); The top of the fixed rod (42) is fixedly connected to a hollow material suction frame (44), and the bottom of the hollow material suction frame (44) is fixedly connected to a material suction pipe (45).

9. A magnetic separation device based on copper tailings according to claim 8, characterized in that: The underwater material suction component comprises a hollow material suction slider (46), the surface of the hollow material suction slider (46) is fixedly connected to an electric control valve (47), the top of the hollow material suction slider (46) is also provided with a connecting pipe (48), the surface of the electromagnetic rod (43) is fixedly connected to a positioning rod (49), the surface of the positioning rod (49) is movably sleeved with a limit block (50), and the limit block (50) is fixedly connected to the hollow material suction slider (46); The surface of the hollow material suction slider (46) is also connected to a sliding wheel (51), the surface of the sliding wheel (51) is connected to a steel wire rope (52), the steel wire rope (52) is fixedly connected to the limit block (50), and the sliding wheel (51) is driven by a driving motor (31).

10. A magnetic separation method based on copper tailings, used for a magnetic separation device based on copper tailings according to any one of claims 1 to 9, characterized in that: The following steps are involved: The copper tailings to be magnetically separated are placed in a storage barrel (1), and after passing through a material separation mechanism, the copper tailings are intermittently sent to a first magnetic separation mechanism; The first magnetic separation mechanism performs preliminary magnetic separation on the copper tailings to obtain preliminary magnetically separated copper tailings and screened miscellaneous materials, and collects the preliminary magnetically separated copper tailings and screened miscellaneous materials; In the process of collecting the copper tailings and the screened miscellaneous materials from the preliminary magnetic separation, the second magnetic separation mechanism is started to perform screening in place of the first magnetic separation mechanism; The miscellaneous materials screened out by the second magnetic separation mechanism are screened again by the buoyancy magnetic separation mechanism; The magnetic copper tailings obtained by the first magnetic separation mechanism, the second magnetic separation mechanism and the buoyancy magnetic separation mechanism are collected, and after being roughly separated again by a Slon-500 magnetic separator, they are finely separated by a centrifuge; The selected copper tailings are scavenged and then scavenged by the SL-500 magnetic separator to obtain strong magnetic concentrate and strong magnetic tailings.

Images