A dry swing iron ore concentrate purification machine

Abstract

The present invention relates to a dry-type swing iron ore concentrate purifier applied to magnetic separation and purification equipment. Through the setting of a magnetic system swing unit, a multi-gradient magnetic system can be controlled to swing back and forth continuously, so that the irregular magnetic chains on the surface of the magnetic drum are turned over, and the magnetic chains are broken for many times, so that part of the entrained stone powder can fall off in time. At the same time, under the cooperation of a water spray unit, the irregular magnetic chains can be washed by high-pressure water, further reducing the formation of large magnetic chains, and at the same time, the stone powder is separated from the magnetic chains under the action of water impact force. Compared with the prior art, the purification efficiency and effect are greatly improved. In addition, the washed water can be recycled back to the water spray unit for reuse after being separated from the iron ore concentrate or tailings, which can greatly improve the utilization rate of water resources and reduce the waste of water resources. Under the setting of a re-selection unit, the reflux water can also be re-selected, thereby effectively avoiding the influence of the micro powder contained in the circulating water on the high-pressure nozzle, so that the purification process can be carried out stably.

Description

Technical Field

[0001] The invention relates to a dry-type swing iron ore concentrate purifier, in particular to a dry-type swing iron ore concentrate purifier applied to magnetic separation and purification equipment. Background Art

[0002] The micro-powder permanent magnetic dry magnetic separator can separate the -0.074mm particle size iron ore into primary iron ore concentrate. The so-called primary iron ore concentrate is not the real iron ore concentrate, because the dry powder of primary iron ore concentrate will contain 2%-10% soil (stone powder) due to the different iron content of the iron ore micro-powder. Only by removing this part of impurities can the real commercial standard of iron ore concentrate be achieved. Therefore, the dry swing iron ore concentrate purification machine is the equipment for purifying the primary iron ore concentrate after dry grinding and dry selection and finally into the finished iron ore concentrate or the existing iron ore concentrate.

[0003] Existing dry magnetic separators often use magnetic differences for separation during magnetic separation. However, during magnetic separation, due to magnetic adsorption, irregular magnetic chains will be formed on the surface of the magnetic separation cylinder. When the magnetic powders adsorb each other, some stone powder will be entrained, resulting in difficulty in fully separating some magnetic materials from the stone powder. The magnetic materials finally obtained often also contain some stone powder, resulting in relatively poor purification efficiency and effect. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that it is difficult to fully separate some magnetic materials from stone powder during separation, resulting in relatively poor purification efficiency and effect.

[0005] In order to solve the above problems, the present invention provides a dry swing iron concentrate purification machine, comprising a frame, a silo is fixedly connected to the upper end of the frame, a vibrating feeder is arranged at the lower end of the silo, a magnetic separation device is arranged in the frame, the magnetic separation device comprises an upper body and a lower body fixedly connected to the lower end of the upper body, a multi-gradient magnetic separation unit is arranged inside the upper body, a mud outlet and a concentrate chute are fixedly connected to the lower end of the lower body, a receiving trough is fixedly connected to the upper end of the concentrate chute, a discharge nozzle is fixedly connected to the upper end of the receiving trough, and the multi-gradient magnetic separation unit A water spray unit is provided outside, and the water spray unit is coaxially arranged with the multi-gradient magnetic separation unit. The multi-gradient magnetic separation unit includes a magnetic separation cylinder and a multi-gradient magnetic system located in the magnetic separation cylinder. A cylinder shaft is fixedly connected between the front and rear ends of the magnetic separation cylinder. One end of the cylinder shaft penetrates the outside of the magnetic separation cylinder and is driven by a motor. A magnetic sleeve shaft is movably sleeved outside the cylinder shaft. A connecting rod is fixedly connected between the multi-gradient magnetic system and the magnetic sleeve shaft. One end of the magnetic sleeve shaft movably penetrates the other end of the magnetic separation cylinder and is connected to a magnetic system swing unit. The lower end of the magnetic system swing unit is fixedly connected to the lower body.

[0006] The magnetic system swing unit includes a swing magnetic motor, a top shoulder ring fixedly connected to the rotating end of the swing magnetic motor, and a self-resetting swing arm located above the top shoulder ring. The self-resetting swing arm includes a swing shoulder fixedly connected to the magnetic sleeve shaft and an elastic telescopic rod rotatably connected to the swing shoulder. An eccentric protrusion is fixedly connected to the outer end of the top shoulder ring.

[0007] The water spray unit includes two side semi-rings fixedly connected to the inner wall of the upper body and a plurality of water distribution pipes fixedly connected between the two side semi-rings. The plurality of water distribution pipes and the end of the discharge nozzle facing the magnetic separation tube are fixedly connected with a plurality of high-pressure nozzles. The side semi-rings, the water distribution pipes and the high-pressure nozzles are connected in sequence. The outer ends of the side semi-rings and the discharge nozzles are fixedly connected with a return pipe and an external pipe with an electromagnetic valve. The return pipe is fixedly connected with a re-selection unit. A diversion pipe is also fixedly connected between the return pipe and the re-selection unit, and the diversion pipe is also provided with a solenoid valve.

[0008] In the above-mentioned dry swing iron ore concentrate purification machine, through the setting of the magnetic system swing unit, on the one hand, the multi-gradient magnetic system can be controlled to swing back and forth continuously, the irregular magnetic chains on the surface of the magnetic drum can be flipped, and the magnetic chains can be broken multiple times, so that some of the entrained stone powder can fall off in time. At the same time, with the cooperation of the water spray unit, the irregular magnetic chains can be flushed by high-pressure water, further reducing the formation of large magnetic chains, so that the stone powder is separated from the magnetic chains under the action of water impact force. Compared with the existing technology, the purification efficiency and effect are greatly improved.

[0009] As a further improvement of the present application, the multi-gradient magnetic system is divided into an adsorption zone, a sorting zone, a purification zone and an unloading zone. The multi-gradient magnetic system includes a plurality of mutually fixed magnetic units, and the plurality of magnetic units correspond to the adsorption zone, the sorting zone, the purification zone and the unloading zone respectively. The magnetic unit includes a fixed support plate, a support bar located at one end of the fixed support plate away from the cylinder shaft, and a magnet fixedly connected to the end of the support bar.

[0010] As a further improvement of the present application, the two branches located at the edge are fixedly connected to the fixed support plate, the multiple branches in the middle are slidably connected to the fixed support plate, and the multiple branches in the middle are fixedly connected with elastic connecting layers every two of them, and an electric push rod is rotatably installed at one end of the two branches away from each other, and the extended end of the electric push rod is rotatably connected to the sliding branch farthest from the fixed mud outlet.

[0011] As a further improvement of the present application, the reselection unit includes two side plates fixedly connected to the return pipe, an outer cover cylinder fixedly connected between the two side plates, and a multi-channel reselection cylinder connected between the two side plates through an electric rotating shaft, and the multi-channel reselection cylinder is provided with a plurality of evenly distributed reselection cavities, and two side plates are also provided on the two side plates.

[0012] As a further improvement of the present application, of the two reselection chambers on the side plate, one side plate is coaxially arranged with the return pipe, and the other side plate is coaxially arranged with the end of the diversion pipe, and when one reselection chamber on the multi-channel reselection tube is coaxial with the return pipe, the other reselection chamber on the multi-channel reselection tube is coaxial with the end of the diversion pipe.

[0013] As a further improvement of the present application, multiple groups of electromagnetic cylinders are fixedly embedded in the multi-channel reselection cylinder, and the multiple electromagnetic cylinders are coaxially arranged with the multiple reselection cavities, and the two ends of the electromagnetic cylinders are flush with the two ends of the multi-channel reselection cylinder, respectively. The electromagnetic cylinder is composed of multiple electromagnetic sheets connected in series, and no two adjacent electromagnetic sheets touch each other.

[0014] As a further improvement of the present application, an electric contact is provided at the reselection cavity on the side plate corresponding to the reflux pipe, and when the reselection cavity on the multi-channel reselection cylinder is coaxial with the reflux pipe, the electric contact is connected and conducted with the electromagnetic cylinder.

[0015] As a further improvement of the present application, the inner walls of multiple reselection cavities on the multi-channel reselection cylinder are installed with monitoring strips, which include a distinguishing cover fixedly connected to the inner wall of the reselection cavity and a laser rangefinder located in the distinguishing cover. The distinguishing cover is made of transparent material, and the detection and emitting end of the laser rangefinder is facing the axis of the reselection cavity.

[0016] As another improvement of the present application, a surface enhancement unit is fixedly connected to the inside of the multi-channel reselection cylinder, and the surface enhancement unit includes a plurality of surface enhancement strips distributed in a ring array and a pre-adherent magnetic sleeve, both ends of the pre-adherent magnetic sleeve and the surface enhancement strips are fixedly connected to the inner wall of the reselection chamber, and the plurality of surface enhancement strips are located between the pre-adherent magnetic sleeve and the inner wall of the reselection chamber.

[0017] In summary, through the setting of the magnetic system swing unit, on the one hand, the multi-gradient magnetic system can be controlled to swing back and forth continuously, the irregular magnetic chains on the surface of the magnetic drum can be flipped, and the magnetic chains can be broken multiple times, so that some of the entrained stone powder can fall off in time. At the same time, with the cooperation of the water spray unit, the irregular magnetic chains can be flushed by high-pressure water, further reducing the formation of large magnetic chains, and the stone powder can be separated from the magnetic chains under the action of water impact force. Compared with the existing technology, the purification efficiency and effect are greatly improved. In addition, the flushing water can be recycled back to the water spray unit for reuse after separation from the iron ore concentrate or tailings. On the one hand, the utilization rate of water resources is greatly improved and the waste of water resources is reduced. On the other hand, under the setting of the re-selection unit, the reflux water can be re-selected, thereby effectively avoiding the influence of the micro-powder contained in the circulating water on the high-pressure nozzle, and effectively ensuring that the recycling of water is not easy to affect the magnetic separation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front schematic diagram of the first embodiment of the present application;

[0019] Figure 2A cross-sectional view of a multi-gradient magnetic separation unit according to a first embodiment of the present application;

[0020] Figure 3 It is a front view schematic diagram of a magnetic swing unit according to a first embodiment of the present application;

[0021] Figure 4 A three-dimensional diagram of a water spray unit according to a first embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of the water circulation process of the first embodiment of the present application;

[0023] Figure 6 It is a partial front view of the reselection unit of the first embodiment of the present application;

[0024] Figure 7 This is a three-dimensional schematic diagram of a reselection unit according to a first embodiment of the present application;

[0025] Figure 8 An exploded view of a reselection unit according to a first embodiment of the present application;

[0026] Fig. 9 This is a radial cross-sectional view of a multi-channel reselector barrel according to a first embodiment of the present application;

[0027] Fig.10 This is a front view of a reselection unit according to a first embodiment of the present application;

[0028] Fig.11 is a cross-sectional schematic diagram of a magnetic system according to a second embodiment of the present application;

[0029] Fig.12 It is a front cross-sectional view of the reselection cavity portion of the third embodiment of the present application;

[0030] Fig.13 This is a radial cross-sectional view of the third embodiment of the present application when the reselection chamber is coaxial with the return pipe;

[0031] Fig.14 This is a radial cross-sectional view of the third embodiment of the present application when the reselection cavity is not coaxial with the return pipe.

[0032] Description of the numbers in the figure:

[0033] 11 frame, 21 silo, 201 receiving trough, 22 mud outlet, 23 fine material chute, 24 vibrating feeder, 31 upper body, 32 lower body, 4 water spray unit, 401 diverter pipe, 41 side semi-ring, 42 water distribution pipe, 43 high-pressure nozzle, 44 return pipe, 45 external pipe, 5 multi-gradient magnetic separation unit, 51 magnetic separation cylinder, 52 multi-gradient magnetic system, 501 cylinder shaft, 502 magnetic sleeve shaft, 521 fixed support plate, 522 support bar, 523 magnet, 524 electric push rod, 525 elastic connecting layer, 531 swing shoulder, 532 elastic telescopic rod, 541 swing magnetic motor, 542 top shoulder ring, 6 unloading nozzle;

[0034] 7 reselection unit, 71 side plate, 72 outer cover tube, 73 multi-channel reselection tube, 701 reselection cavity, 702 electric contact piece, 74 electromagnetic tube, 81 laser rangefinder, 82 differentiation cover, 91 increase noodle, 92 pre-wall-attached magnetic sleeve. DETAILED DESCRIPTION

[0035] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0036] The first implementation method:

[0037] Figure 1A dry swing iron concentrate purifier is shown, comprising a frame 11, a silo 21 is fixedly connected to the upper end of the frame 11, a vibrating feeder 24 is arranged at the lower end of the silo 21, a magnetic separation device is arranged in the frame 11, the magnetic separation device comprises an upper body 31 and a lower body 32 fixedly connected to the lower end of the upper body 31, a multi-gradient magnetic separation unit 5 is arranged inside the upper body 31, a mud outlet 22 and a concentrate chute 23 are fixedly connected to the lower end of the lower body 32, a receiving trough 201 is fixedly connected to the upper end of the concentrate chute 23, a discharge nozzle 6 is fixedly connected to the upper end of the receiving trough 201, a water spray unit 4 is arranged outside the multi-gradient magnetic separation unit 5, the water spray unit 4 is coaxially arranged with the multi-gradient magnetic separation unit 5, the multi-gradient magnetic separation unit 5 comprises a magnetic separation cylinder 51 and a multi-gradient magnetic system 52 located in the magnetic separation cylinder 51, the multi-gradient magnetic system 52 is divided into an adsorption area, a separation area, a purification area and an ore unloading area, and the multi-gradient magnetic system 52 comprises multiple The magnetic units are fixed to each other, and the multiple magnetic units correspond to the adsorption area, the sorting area, the purification area and the unloading area respectively. A barrel shaft 501 is fixedly connected between the front and rear ends of the magnetic separation barrel 51. One end of the barrel shaft 501 penetrates the outside of the magnetic separation barrel 51 and is driven by a motor. A magnetic sleeve shaft 502 is movably sleeved outside the barrel shaft 501. A connecting rod is fixedly connected between the multi-gradient magnetic system 52 and the magnetic sleeve shaft 502. When in use, the material falls from the silo 21 into the upper body 31 through the vibrating feeder 24. At the same time, the rotation of the magnetic separation barrel 51 drives the material to rotate. Some magnetic materials are magnetically adsorbed, while non-magnetic materials, such as stone powder, mud, etc., fall directly and are discharged from the mud outlet 22. The magnetic iron concentrate passes through the adsorption area, the sorting area, the purification area and the unloading area in sequence with the rotation of the magnetic separation barrel 51, and finally falls in the unloading area, enters the concentrate chute 23 along the receiving trough 201, and is then discharged.

[0038] One end of the magnetic sleeve shaft 502 movably passes through the other end of the magnetic separation tube 51 and is connected to a magnetic swing unit. The lower end of the magnetic swing unit is fixedly connected to the lower body 32. The magnetic swing unit includes a swing magnetic motor 541, a top shoulder ring 542 fixedly connected to the rotating end of the swing magnetic motor 541, and a self-resetting swing arm located above the top shoulder ring 542. The self-resetting swing arm includes a swing shoulder 531 fixedly connected to the magnetic sleeve shaft 502 and an elastic telescopic rod 532 rotatably connected to the swing shoulder 531. The outer end of the top shoulder ring 542 is fixedly connected to an eccentric protrusion. During magnetic separation, the swing magnetic motor 54 1 rotates, which can drive the top shoulder ring 542 to rotate. Its eccentric protrusion will press the swing shoulder 531 upward to move the end upward, while the other end will press the elastic telescopic rod 532 and move it downward. When the eccentric protrusion is misaligned with the swing shoulder 531, the elastic telescopic rod 532 is reset to drive the swing shoulder 531 to restore its original state. In this process, the swing shoulder 531 is swung, and then the multi-gradient magnetic system 52 is driven to swing, so that irregular magnetic chain flipping is formed on the surface of the magnetic separation cylinder 51, thereby breaking the magnetic chain for many times, avoiding the formation of large magnetic agglomeration, and better removing mud and stone powder in the magnetic chain, so as to purify the iron ore concentrate;

[0039] like Figure 4 and Figure 6 The water spray unit 4 includes two side semi-rings 41 fixedly connected to the inner wall of the upper body 31 and a plurality of water distribution pipes 42 fixedly connected between the two side semi-rings 41. The plurality of water distribution pipes 42 and the end of the discharge nozzle 6 facing the magnetic separation tube 51 are fixedly connected with a plurality of high-pressure nozzles 43. The side semi-rings 41, the water distribution pipes 42 and the high-pressure nozzles 43 are connected in sequence. The outer ends of the side semi-rings 41 and the discharge nozzle 6 are fixedly connected with a return pipe 44 and an external pipe 45 with an electromagnetic valve. The return pipe 44 is used to return the water with iron concentrate after flushing to the water spray unit 4 for repeated recycling, and the external pipe 45 is used to directly charge the external clean water source into the water spray unit 4 for use, and the electromagnetic valves on the return pipe 44 and the external pipe 45 are not opened at the same time. When the return pipe 44 and the external pipe 45 are opened, the return pipe 44 and the external pipe 45 are opened. When the water contains impurities, the external pipe 45 can be opened and the return pipe 44 can be closed, so that the staff can reprocess the returned water in time to reduce the impact on the high-pressure nozzle 43 and prevent it from being blocked. The return pipe 44 is fixedly connected to the reselection unit 7, and a shunt pipe 401 is also fixedly connected between the return pipe 44 and the reselection unit 7. The shunt pipe 401 is also provided with a solenoid valve. After each rotation of the multi-channel reselection cylinder 73, the shunt pipe 401 can be controlled to open, so that part of the sewage can enter the reselection chamber 701 with iron ore powder, and the return water can enter the reselection chamber 701 for flushing, so that the reselected iron ore powder in the reselection unit 7 can be desorbed, so that when it rotates to be coaxial with the return pipe 44, it can adsorb the iron ore powder in the water again, thereby protecting the high-pressure nozzle 43 from being blocked.

[0040] like Figure 7-9 The reselection unit 7 includes two side plates 71 fixedly connected to the return pipe 44, an outer cover tube 72 fixedly connected between the two side plates 71, and a multi-channel reselection tube 73 connected between the two side plates 71 through an electric rotating shaft. The multi-channel reselection tube 73 is provided with a plurality of evenly distributed reselection cavities 701. Two side plates 71 are also provided on the two side plates 71. A plurality of groups of electromagnetic tubes 74 are fixedly embedded in the multi-channel reselection tube 73. The plurality of electromagnetic tubes 74 are respectively coaxially arranged with the plurality of reselection cavities 701, and the two ends of the electromagnetic tube 74 are respectively flush with the two ends of the multi-channel reselection tube 73. The electromagnetic tube 74 is composed of a plurality of electromagnetic sheets connected in series, and two adjacent electromagnetic sheets do not contact each other. Fig.10 An electric contact piece 702 is provided at the reselection chamber 701 on the side plate 71 corresponding to the reflux pipe 44. When the reselection chamber 701 on the multi-channel reselection cylinder 73 is coaxial with the reflux pipe 44, the electric contact piece 702 is connected and conducted with the electromagnetic cylinder 74. At this time, the reflux water enters the magnetic reselection chamber 701 through the reflux pipe 44. If there is iron concentrate in it, it can be adsorbed and attached to the inner wall of the reselection chamber 701 again, so that the reflux water entering the water spray unit 4 is re-adsorbed, and then enters the high-pressure nozzle 43 to wash the surface of the magnetic separation cylinder 51.

[0041] Of the two reselection chambers 701 on the side plate 71, one side plate 71 is coaxially arranged with the reflux pipe 44, and the other side plate 71 is coaxially arranged with the end of the diversion pipe 401, and when one reselection chamber 701 on the multi-channel reselection barrel 73 is coaxial with the reflux pipe 44, the other reselection chamber 701 on the multi-channel reselection barrel 73 is coaxial with the end of the diversion pipe 401, so that the reselection unit 7 can simultaneously re-adsorb the residual iron ore concentrate in the water and desorb the iron ore concentrate after adsorption, so that there is no need to shut down or remove the reselection unit 7 to desorb the iron ore concentrate, and this process can be automatically realized, effectively ensuring the continuity of the use process of the purification machine.

[0042] The inner walls of the multiple reselection chambers 701 on the multi-channel reselection cylinder 73 are all equipped with monitoring strips, which include a distinguishing cover 82 fixedly connected to the inner wall of the reselection chamber 701 and a laser rangefinder 81 located in the distinguishing cover 82. The distinguishing cover 82 is made of transparent material, and the detection and emission end of the laser rangefinder 81 faces the axis of the reselection chamber 701. When the reselection chamber 701 corresponding to the reflux pipe 44 is reselected, when the surface of the distinguishing cover 82 is adsorbed with iron concentrate, the surface of the distinguishing cover 82 is attached with iron concentrate, which will cause the laser rangefinder 81 to be The pressure drop of the reselection chamber 701 is obviously reduced. At this time, the multi-channel reselection cylinder 73 can be controlled to rotate by the electric shaft to make the new reselection chamber 701 coaxial with the reflux pipe 44 again to re-adsorb the iron ore concentrate, and the reselection chamber 701 containing the iron ore concentrate moves to be coaxial with the end of the shunt pipe 401. At this time, the solenoid valve on the shunt pipe 401 can be controlled to open, and the reflux water can be used for flushing and desorption. When the data on the laser rangefinder 81 is restored, it means that the desorption of the iron ore concentrate is completed. At this time, the solenoid valve on the shunt pipe 401 can be controlled to close, so that the reflux water will no longer be used for desorption.

[0043] It is worth noting that a timer can also be set in the reselection unit 7 to record the interval between each adjacent rotation of the multi-channel reselection drum 73. When the rotation interval is significantly shortened, it means that the content of iron ore concentrate in the return water is relatively high. At this time, the external pipe 45 can be controlled to open and the return pipe 44 can be closed. The staff can centrally treat the return water accordingly and then recycle it.

[0044] In summary, by setting the magnetic system swing unit, on the one hand, the multi-gradient magnetic system 52 can be controlled to swing back and forth continuously, the irregular magnetic chain on the surface of the magnetic drum can be flipped, and the magnetic chain can be broken multiple times, so that part of the entrained stone powder can fall off in time, such as Figure 5At the same time, with the cooperation of the water spray unit 4, the irregular magnetic chains can be flushed by high-pressure water, further reducing the formation of large magnetic chains, so that the stone powder is separated from the magnetic chains under the action of water impact force. Compared with the existing technology, the purification efficiency and effect are greatly improved. In addition, the flushing water can be recycled back to the water spray unit 4 for reuse after being separated from the iron ore concentrate or tailings. On the one hand, the utilization rate of water resources is greatly improved and the waste of water resources is reduced. On the other hand, under the setting of the re-selection unit 7, the reflux water can be re-selected, thereby effectively avoiding the influence of the micropowder contained in the circulating water on the high-pressure nozzle 43, and effectively ensuring that the recycling of water is not easy to affect the magnetic separation process.

[0045] The second implementation method:

[0046] This embodiment further improves the magnetic unit on the basis of the first embodiment, and the rest of the parts remain the same as the first embodiment.

[0047] like Fig.11 The magnetic unit includes a fixed support plate 521, a support bar 522 located at one end of the fixed support plate 521 away from the barrel shaft 501, and a magnet 523 fixedly connected to the end of the support bar 522. The two support bars 522 located at the edge are fixedly connected to the fixed support plate 521, and the multiple support bars 522 in the middle are slidably connected to the fixed support plate 521, and the multiple support bars 522 in the middle are fixedly connected with elastic connecting layers 525 every two. The ends of the two support bars 522 away from each other are rotatably installed with electric push rods 524, and the extended end of the electric push rod 524 is rotatably connected to the sliding support bar 522 farthest from the fixed mud outlet 22.

[0048] like Fig.11 By setting the electric push rod 524, the other multiple magnets 523 except the two edge magnets 523 can be controlled to swing in the corresponding area, and then the magnetic system can be swung while the positions of the adsorption area, the sorting area, the purification area and the unloading area remain stable, so that the irregular magnetic chains on the surface of the magnetic drum can be flipped, and the magnetic chains can be broken multiple times, so that some of the entrained stone powder can fall off in time. Compared with the swing of the entire multi-gradient magnetic system 52, it is less likely to cause the edges of the two adjacent areas to be blurred during the swing, thereby effectively preventing the iron ore concentrate from entering the mud outlet 22 or the mud from entering the concentrate chute 23.

[0049] It is worth noting that in this embodiment, the magnetic system swing unit does not work first, and only the above-mentioned structure is used to realize the flipping and rotation of the local magnetic system in the area. When a large irregular magnetic flux appears and it is difficult to break the magnetic flux only by flipping in the local area, the magnetic system swing unit is controlled to work to increase the swing range of the magnetic system and assist in breaking the magnetic flux.

[0050] The third implementation method:

[0051] This embodiment is based on the first embodiment or the second embodiment, and a surface adding unit is added, and the rest of the parts are consistent with the first embodiment or the second embodiment.

[0052] Figure 12-13 As shown, a surface enhancement unit is fixedly connected to the inside of the multi-channel reselection cylinder 73, and the surface enhancement unit includes a plurality of surface enhancement noodles 91 distributed in a ring array and a pre-wall-adhering magnetic sleeve 92, both ends of the pre-wall-adhering magnetic sleeve 92 and the surface enhancement noodle 91 are fixedly connected to the inner wall of the reselection chamber 701, and the plurality of surface enhancement noodle 91 are located between the pre-wall-adhering magnetic sleeve 92 and the inner wall of the reselection chamber 701.

[0053] like Fig.14 The electromagnetic tube 74 at the side plate 71 coaxial with the reflux pipe 44 is turned on and has magnetism, and is subjected to magnetic adsorption. The pre-walled magnetic sleeve 92 is close to the inner wall of the reselection chamber 701 and is tightly attached to the inner wall of the reselection chamber 701, so that it is in a stable state. When the reflux water flows through the reselection chamber 701, when it contains magnetic powder, it can be adsorbed through the pre-walled magnetic sleeve 92. By setting the increase surface 91, the surface area that can be attached to the side plate 71 can be effectively increased, so that the iron ore powder contained in the water can be more fully adsorbed, reducing the risk of clogging the high-pressure nozzle 43, so that the purification machine can stably carry out the magnetic separation process.

[0054] It is worth noting that the pre-attached magnetic sleeve 92 is made of transparent material and is fixedly inlaid with multiple magnetic dots. Multiple laser rangefinders 81 for detecting whether iron concentrate is adsorbed in the reselection cavity 701 can be set and distributed in a circular array between the two increase-surface surfaces.

[0055] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A dry swing iron ore concentrate purifier, characterized in that: The invention comprises a frame (11), the upper end of the frame (11) is fixedly connected to a silo (21), the lower end of the silo (21) is provided with a vibrating feeder (24), a magnetic separation device is provided inside the frame (11), the magnetic separation device comprises an upper body (31) and a lower body (32) fixedly connected to the lower end of the upper body (31), a multi-gradient magnetic separation unit (5) is provided inside the upper body (31), a mud outlet (22) and a concentrate chute (23) are fixedly connected to the lower end of the lower body (32), a material receiving trough (201) is fixedly connected to the upper end of the concentrate chute (23), a material receiving trough (201) is fixedly connected to the upper end of the material receiving trough (201), a discharge nozzle (6) is fixedly connected to the upper end of the material receiving trough (201), a water spray unit (4) is provided outside the multi-gradient magnetic separation unit (5), and the The water spray unit (4) is coaxially arranged with the multi-gradient magnetic separation unit (5), and the multi-gradient magnetic separation unit (5) comprises a magnetic separation cylinder (51) and a multi-gradient magnetic system (52) located in the magnetic separation cylinder (51); a cylinder shaft (501) is fixedly connected between the front and rear ends of the magnetic separation cylinder (51); one end of the cylinder shaft (501) penetrates outside the magnetic separation cylinder (51) and is driven by a motor; a magnetic sleeve shaft (502) is movably sleeved outside the cylinder shaft (501); a connecting rod is fixedly connected between the multi-gradient magnetic system (52) and the magnetic sleeve shaft (502); one end of the magnetic sleeve shaft (502) movably penetrates the other end of the magnetic separation cylinder (51) and is connected to a magnetic system swing unit; the lower end of the magnetic system swing unit is fixedly connected to the lower body (32); The magnetic system swing unit comprises a swing magnetic motor (541), a top shoulder ring (542) fixedly connected to the rotating end of the swing magnetic motor (541), and a self-resetting swing arm located above the top shoulder ring (542); the self-resetting swing arm comprises a swing shoulder (531) fixedly connected to the magnetic sleeve shaft (502) and an elastic telescopic rod (532) rotatably connected to the swing shoulder (531); an eccentric protrusion is fixedly connected to the outer end of the top shoulder ring (542); The water spray unit (4) comprises two side semi-rings (41) fixedly connected to the inner wall of the upper body (31) and a plurality of water distribution pipes (42) fixedly connected between the two side semi-rings (41); the ends of the plurality of water distribution pipes (42) and the discharge nozzle (6) facing the magnetic separation cylinder (51) are fixedly connected to a plurality of high-pressure nozzles (43); the side semi-rings (41), the water distribution pipes (42) and the high-pressure nozzles (43) are sequentially connected; the outer ends of the side semi-rings (41) and the discharge nozzle (6) are fixedly connected to a return pipe (44) with a solenoid valve and an external pipe (45); the return pipe (44) is fixedly connected to a reselection unit (7); a shunt pipe (401) is also fixedly connected between the return pipe (44) and the reselection unit (7); the shunt pipe (401) is also provided with a solenoid valve; the reselection unit (7) is used to re-adsorb iron concentrate in the return water; The reselection unit (7) comprises two side plates (71) fixedly connected to the return pipe (44), an outer cover tube (72) fixedly connected between the two side plates (71), and a multi-channel reselection tube (73) connected between the two side plates (71) via an electric rotating shaft. The multi-channel reselection tube (73) is provided with a plurality of evenly distributed reselection chambers (701). The two side plates (71) are also provided with two side plates (71). Of the two reselection chambers (701) on the side plates (71), one side plate (71) is coaxially arranged with the return pipe (44), and the other side plate (71) is coaxially arranged with the end of the diverter pipe (401). When one reselection chamber (701) on the multi-channel reselection tube (73) is coaxial with the return pipe (44), the other reselection chamber (701) on the multi-channel reselection tube (73) is coaxial with the end of the diverter pipe (401). A plurality of groups of electromagnetic cylinders (74) are fixedly embedded in the multi-channel reselection cylinder (73); the plurality of electromagnetic cylinders (74) are respectively coaxially arranged with the plurality of reselection chambers (701), and the two ends of the electromagnetic cylinder (74) are respectively flush with the two ends of the multi-channel reselection cylinder (73); the electromagnetic cylinder (74) is composed of a plurality of electromagnetic sheets connected in series, and two adjacent electromagnetic sheets do not contact each other; an electric contact sheet (702) is arranged at the reselection chamber (701) corresponding to the return pipe (44) on the side plate (71); when the reselection chamber (701) on the multi-channel reselection cylinder (73) is coaxial with the return pipe (44), the electric contact sheet (702) is connected and conducted with the electromagnetic cylinder (74).

2. A dry swing iron ore concentrate purifier according to claim 1, characterized in that: The multi-gradient magnetic system (52) is divided into an adsorption area, a separation area, a purification area and an ore unloading area. The multi-gradient magnetic system (52) comprises a plurality of mutually fixed magnetic units, the plurality of magnetic units respectively corresponding to the adsorption area, the separation area, the purification area and the ore unloading area. The magnetic units comprise a fixed support plate (521), a support bar (522) located at an end of the fixed support plate (521) away from the barrel shaft (501), and a magnet (523) fixedly connected to the end of the support bar (522).

3. A dry swing iron ore concentrate purifier according to claim 2, characterized in that: The two support bars (522) located at the edge are fixedly connected to the fixed support plate (521), the plurality of support bars (522) in the middle are slidably connected to the fixed support plate (521), and the plurality of support bars (522) in the middle are fixedly connected with elastic connecting layers (525) between each other, and an electric push rod (524) is rotatably mounted on the ends of the two support bars (522) that are away from each other, and the extended end of the electric push rod (524) is rotatably connected to the sliding support bar (522) farthest from the fixed mud outlet (22).

4. A dry swing iron ore concentrate purifier according to claim 1, characterized in that: The inner walls of the multiple reselection cavities (701) on the multi-channel reselection barrel (73) are all equipped with monitoring strips, the monitoring strips comprising a distinguishing cover (82) fixedly connected to the inner wall of the reselection cavity (701) and a laser rangefinder (81) located in the distinguishing cover (82), the distinguishing cover (82) being made of a transparent material, and the detection emission end of the laser rangefinder (81) facing the axis of the reselection cavity (701).

5. A dry swing iron concentrate purifier according to claim 4, characterized in that: A surface increasing unit is fixedly connected inside the multi-channel reselection cylinder (73), and the surface increasing unit comprises a plurality of surface increasing strips (91) and a pre-adherent magnetic sleeve (92) distributed in a ring array, both ends of the pre-adherent magnetic sleeve (92) and the surface increasing strips (91) are fixedly connected to the inner wall of the reselection chamber (701), and the plurality of surface increasing strips (91) are located between the pre-adherent magnetic sleeve (92) and the inner wall of the reselection chamber (701).

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