Preparation process of ultra-pure iron ore concentrate

Abstract

The invention discloses an ultra-pure iron ore concentrate preparation technology, and belongs to the field of ultra-pure iron ore concentrate preparation. S1, firstly, an ultra-pure iron ore concentrate preparation device is used for conducting coarse crushing and fine crushing treatment on raw ore, and ore powder obtained after fine crushing treatment is screened; s2, the screened coarse broken stones are crushed again; s3, carrying out magnetic separation treatment on the screened fine crushed stones; and S4, finally, the iron fine powder and the iron ore powder subjected to magnetic separation are classified and collected. The magnetic separation device has the effect of improving the ore magnetic separation efficiency.

Description

Technical Field

[0001] The invention relates to the field of ultrapure iron concentrate preparation, in particular to a process for preparing ultrapure iron concentrate. Background Art

[0002] Ultrapure iron concentrate is an important source of raw materials for new iron-based mineral materials. It is usually required that the TFe grade is greater than 72.0%, and the content of impurities (acid insolubles) such as SiO2 is less than 0.2%. It can be widely used in the production of powder metallurgy, magnetic materials, ultrapure iron and clean steel base materials, electronics, chemicals, environmental protection, preservation and medical industries. Its demand is also increasing with the development of social economy and technology. Compared with ordinary iron concentrate, super iron concentrate has higher technical content and added value, and its selling price is 3 to 5 times that of ordinary iron concentrate. Its processing and production are of great significance to improving the economic benefits of enterprises, giving full play to the value of my country's limited high-quality mineral resources, and promoting the advancement of mineral processing technology and product upgrading.

[0003] In the related art, a Chinese invention patent with publication number CN116174126A discloses a device and method for preparing high-quality ultra-pure iron concentrate from iron ore, including a coarse crushing box, a feeding conveyor frame, a fine crushing box, a first conveyor belt mounting frame and a second conveyor belt fixing frame. The discharge port of the coarse crushing box is connected to the feeding conveyor frame, one end of the feeding conveyor frame is connected to the feeding port at the top of the fine crushing box, the fine crushing box is installed on the top of one end of the first conveyor belt mounting frame, support frames are installed on both sides of the first conveyor belt mounting frame, a hydraulic cylinder is installed on the side of the support frame, a connecting frame is installed on the top of the hydraulic cylinder, the connecting frame is installed on both sides of the second conveyor belt fixing frame, and a drying box is installed on the top of the feeding conveyor frame.

[0004] In the above-mentioned related technology, the raw ore is put into a coarse crushing box for crushing, and the crushed coarse ore is crushed again in a fine crushing box. The ore crushed in the fine crushing box is subjected to magnetic separation. Since the ore crushed in the fine crushing box may still contain some large particles of crushed stone, the magnetic separation efficiency of the ore is reduced. Summary of the invention

[0005] In order to improve the problem that some large-particle crushed stones may still exist in the ore after being crushed by the fine crushing box, thereby reducing the efficiency of magnetic separation of the ore, the present application provides a process for preparing ultra-pure iron concentrate.

[0006] The present application provides a process for preparing ultrapure iron concentrate using the following technical solution: 1.1 A process for preparing ultrapure iron concentrate, comprising the following steps: S1: First, the raw ore is coarsely crushed and finely crushed using an ultrapure iron ore concentrate preparation device, and the ore powder after fine crushing is screened; S2: crushing the coarse gravel screened out; S3: subjecting the sieved fine gravel to magnetic separation; S4: Finally, the magnetically separated iron ore powder and iron ore powder are classified and collected.

[0007] By adopting the above technical scheme, the raw ore is firstly subjected to coarse and fine crushing by the super-fine iron ore preparation device, the ore after coarse and fine crushing is then screened to screen out fine crushed stone, and then the fine crushed stone after screening is magnetically separated, thereby improving the magnetic separation efficiency of the ore.

[0008] Preferably, the ultra-pure iron concentrate preparation device includes a frame, a mounting seat is provided on the frame, a box body is provided on the top surface of the mounting seat, a crushing roller one and a crushing roller two are rotatably mounted between the opposite inner side surfaces of the box body, a driving member for driving the crushing roller one and the crushing roller two to rotate relative to each other is provided on the box body, a grinding groove is provided on the top surface of the mounting seat, a grinding block is rotatably arranged in the grinding groove, a power member for driving the grinding block to rotate is provided on the frame, a screen plate is provided between the opposite inner side surfaces of the mounting seat, a driving assembly for driving the screen plate to shake is provided on the mounting seat, and a magnetic separation mechanism for magnetically separating the fine crushed stone after screening is provided on the frame.

[0009] By adopting the above technical scheme, the raw ore is poured into the box, and then the driving member drives the crushing roller one and the crushing roller two to rotate, so that the crushing roller one and the crushing roller two crush the raw ore, and the crushed raw ore falls into the grinding trough, and then the power member drives the grinding block to rotate, so that the grinding block performs secondary crushing on the crushed raw ore, and the raw ore ground by the grinding block falls onto the screen plate, and then the screen plate is driven to shake by the driving component, so that the screen plate screens the raw ore after the secondary crushing, and the coarse crushed stone after screening is crushed again, and the fine crushed stone after screening is magnetically separated by the magnetic separation mechanism, thereby improving the magnetic separation efficiency of the ore.

[0010] Preferably, the magnetic separation mechanism includes a transmission roller 1 and a transmission roller 2 rotatably installed between the opposite inner side surfaces of the frame, the outer circumferences of the transmission roller 1 and the transmission roller 2 are sleeved with a conveyor belt 1, a motor 1 is arranged on the side of the frame, the output shaft of the motor 1 is fixedly connected to one end of the transmission roller 1, a mounting frame is fixed on the top surface of the frame, a transmission roller 3 and a transmission roller 4 are rotatably installed between the opposite inner side surfaces of the mounting frame, the outer circumferences of the transmission roller 3 and the transmission roller 4 are sleeved with a conveyor belt 2, a motor 2 is fixed on the side of the mounting frame, the output shaft of the motor 2 is fixedly connected to one end of the transmission roller 3, a magnetic plate is fixed between the opposite inner side surfaces of the mounting frame, and the magnetic plate is located inside the conveyor belt 2.

[0011] By adopting the above technical scheme, the fine crushed stones after screening fall on conveyor belt one, and then motor one and motor two are started, the output shaft of motor one drives transmission roller one to rotate, and transmission roller one drives conveyor belt one to rotate and transport the fine crushed stones after screening, the output shaft of motor two drives transmission roller three to rotate, and transmission roller three drives conveyor belt two to rotate, the magnetic plate adsorbs the iron concentrate in the fine crushed stones on conveyor belt two, and conveyor belt two transports the iron concentrate, thereby completing the magnetic separation of iron ore.

[0012] Preferably, the output end of the conveyor belt 2 is located on the side of the conveyor belt 1 away from the mounting seat, and the end of the frame away from the mounting seat is provided with a material receiving box 1 and a material receiving box 2, the material receiving box 1 is located below the output end of the conveyor belt 1, and the material receiving box 2 is located below the output end of the conveyor belt 2.

[0013] By adopting the above technical solution, a receiving box 1 is placed below the output end of conveyor belt 1, and a receiving box 2 is placed below the output end of conveyor belt 2, so that the iron ore powder after magnetic separation on conveyor belt 1 falls into the receiving box 1, and the iron ore concentrate on conveyor belt 2 falls into the receiving box 2, thereby facilitating the collection of the iron ore powder and iron ore concentrate after magnetic separation.

[0014] Preferably, a rotating shaft is rotatably mounted on the relative inner side surface of the mounting frame, a plurality of bristles are fixed to the outer peripheral surface of the rotating shaft, a gear one is arranged at one end of the transmission roller three away from the motor two, a gear two is arranged at one end of the rotating shaft, and the gear one is meshed with the gear two.

[0015] By adopting the above technical solution, when the transmission roller three rotates, the transmission roller three drives the gear one to rotate, the gear one drives the gear two to rotate, the gear two drives the rotating shaft to rotate, and the rotating shaft drives the bristles to rotate, so that the bristles brush the iron powder on the conveyor belt two and drop it into the receiving box two.

[0016] Preferably, the driving member includes a motor three arranged on the side of the box body, the output shaft of the motor three is fixedly connected to one end of the crushing roller one, the end of the crushing roller one away from the motor three is provided with a gear three, and one end of the crushing roller two is provided with a gear four, and the gear three is meshed with the gear four.

[0017] By adopting the above technical solution, when the raw ore is poured into the box, motor three is started, the output shaft of motor three drives crushing roller one to rotate, crushing roller one drives gear three to rotate, gear three drives gear four to rotate, gear four drives crushing roller two to rotate, so that crushing roller one and crushing roller two rotate to crush the raw ore.

[0018] Preferably, slides are fixed to the relative inner sides of the mounting seat, movable shafts are fixed to the two side sides of the sieve plate, the movable shafts overlap the surfaces of the slides, the driving assembly includes turntables arranged on both sides of the sieve plate, the turntables are rotatably mounted with connecting shafts close to the side of the sieve plate, the central axis of the connecting shaft is spaced apart from the central axis of the turntable, a rotating shaft is fixed to the side of the turntable away from the sieve plate, one end of the rotating shaft away from the sieve plate passes through the side of the mounting seat, the rotating shaft is rotatably connected to the mounting seat, and a power assembly for driving the rotating shaft to rotate is arranged on the second crushing roller.

[0019] By adopting the above technical solution, when the crushing roller 2 rotates, the crushing roller 2 drives the power component, the power component drives the rotating shaft to rotate, the rotating shaft drives the turntable to rotate, the turntable drives the connecting shaft to rotate around the central axis of the rotating shaft, so that the connecting shaft drives the screen plate to move, so that the screen plate screens the secondary crushed original ore.

[0020] Preferably, the power assembly comprises a pulley 1 arranged at both ends of the crushing roller 2, a pulley 2 is sleeved on one end of the rotating shaft away from the screen plate, and a transmission belt 1 is wound around the outer circumference of the pulley 1 and the pulley 2.

[0021] By adopting the above technical solution, when the crushing roller 2 rotates, the crushing roller 2 drives the pulley 1 to rotate, the pulley 1 drives the transmission belt 1 to rotate, the transmission belt 1 drives the pulley 2 to rotate, so that the pulley 2 drives the rotating shaft to rotate.

[0022] Preferably, a support plate is fixed between the relative inner side surfaces of the mounting frame, a rotating shaft is rotatably mounted on the bottom surface of the support plate, a mounting rod is fixed to the bottom end of the rotating shaft, a rake rod is fixed to the bottom surface of the mounting rod, a motor four is fixed to the top surface of the support plate, and the output shaft of the motor four is fixedly connected to the top end of the rotating shaft.

[0023] By adopting the above technical solution, motor four is started, the output shaft of motor four drives the rotating shaft to rotate, the rotating shaft drives the mounting rod to rotate, and the mounting rod drives the rake rod to rotate, so that the rake rod spreads the original ore screened on conveyor belt one, thereby facilitating the magnetic plate to adsorb the iron ore concentrate onto conveyor belt two.

[0024] Preferably, the power component includes a third pulley arranged on the rotating shaft, a transmission shaft is fixed to the bottom surface of the grinding block, a fourth pulley is arranged on the transmission shaft, and a transmission belt 2 is wound around the third pulley and the fourth pulley.

[0025] By adopting the above technical solution, when the rotating shaft rotates, the rotating shaft drives pulley three to rotate, pulley three drives transmission belt two to rotate, transmission belt two drives pulley four to rotate, pulley four drives the transmission shaft to rotate, so that the transmission shaft drives the grinding block to rotate.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Pour the raw ore into the box, and then drive the crushing roller 1 and the crushing roller 2 to rotate through the driving component, so that the crushing roller 1 and the crushing roller 2 crush the raw ore, and the crushed raw ore falls into the grinding tank, and then the power component drives the grinding block to rotate, so that the grinding block performs secondary crushing on the crushed raw ore, and the raw ore ground by the grinding block falls onto the screen plate, and then the screen plate is driven by the driving component to shake, so that the screen plate screens the raw ore after secondary crushing, and the coarse crushed stone after screening is crushed again, and the fine crushed stone after screening is magnetically separated by the magnetic separation mechanism, thereby improving the magnetic separation efficiency of the ore; 2. The fine crushed stones after screening fall on the conveyor belt 1, and then the motor 1 and the motor 2 are started. The output shaft of the motor 1 drives the transmission roller 1 to rotate, and the transmission roller 1 drives the conveyor belt 1 to rotate and transport the fine crushed stones after screening. The output shaft of the motor 2 drives the transmission roller 3 to rotate, so that the transmission roller 3 drives the conveyor belt 2 to rotate. The magnetic plate adsorbs the iron concentrate in the fine crushed stones on the conveyor belt 2, so that the conveyor belt 2 transports the iron concentrate, thereby completing the magnetic separation of iron ore; 3. When the second crushing roller rotates, the second crushing roller drives the first pulley to rotate, the first pulley drives the transmission belt to rotate, the transmission belt drives the second pulley to rotate, the second pulley drives the rotating shaft to rotate, the rotating shaft drives the turntable to rotate, the turntable drives the connecting shaft to rotate around the central axis of the rotating shaft, so that the connecting shaft drives the screen plate to move, so that the screen plate can screen the secondary crushed raw ore. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the ultra-pure iron concentrate preparation device in the embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the structure of the box body in the embodiment of the present application.

[0029] Figure 3 It is a cross-sectional view of the box body and the mounting base in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the structure of the sieve plate in the embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of the structure of the conveyor belt 1 in the embodiment of the present application.

[0032] Figure numerals: 1. Ultrapure iron concentrate preparation device; 11. Frame; 2. Mounting seat; 21. Grinding groove; 22. Grinding block; 23. Transmission shaft; 24. Fixed plate 1; 25. Fixed plate 2; 26. Through hole; 3. Box; 31. Crushing roller 1; 32. Crushing roller 2; 33. Motor 3; 34. Gear 3; 35. Gear 4; 4. Screen plate; 41. Slide plate; 42. Moving shaft; 43. Turntable; 44. Connecting shaft; 45. Rotating shaft; 46. Pulley 1; 47. Pulley 2; 48. Transmission belt 1; 49. Material receiving Box three; 5, transmission roller one; 51, transmission roller two; 52, conveyor belt one; 53, motor one; 54, receiving box one; 6, mounting frame; 61, transmission roller three; 62, transmission roller four; 63, conveyor belt two; 64, motor two; 65, magnet plate; 66, receiving box two; 7, rotating shaft; 71, gear one; 72, gear two; 73, brush; 8, support plate; 81, rotating shaft; 82, mounting rod; 83, rake rod; 84, motor four; 9, power part; 91, pulley three; 92, pulley four; 93, transmission belt two. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiment of the present application discloses a process for preparing ultrapure iron concentrate.

[0035] Reference Figure 1 , a process for preparing ultrapure iron concentrate, comprising the following steps: S1: First, the raw ore is coarsely crushed and finely crushed using the ultrapure iron ore preparation device 1, and the ore powder after fine crushing is screened; S2: crushing the coarse gravel screened out; S3: subjecting the sieved fine gravel to magnetic separation; S4: Finally, the magnetically separated iron ore powder and iron ore powder are classified and collected.

[0036] Reference Figure 1 and Figure 2 The ultrapure iron concentrate preparation device 1 comprises a frame 11 and a mounting seat 2 fixed to one side of the top surface of the frame 11, and a box body 3 is fixed to the top surface of the mounting seat 2. A crushing roller 1 31 and a crushing roller 2 32 are rotatably mounted between the opposite inner sides of the box body 3, a motor 33 is fixed to the side of the box body 3, and the output shaft of the motor 33 is fixedly connected to one end of the crushing roller 1 31. A gear 3 34 is sleeved and fixed to one end of the crushing roller 1 31 away from the motor 3 33, and a gear 4 35 is sleeved and fixed to one end of the crushing roller 2 32 away from the motor 3 33, and the gear 3 34 is meshed with the gear 4 35.

[0037] Reference Figure 1 and Figure 3A grinding groove 21 is provided on the top surface of the mounting seat 2, and the grinding groove 21 is connected to the box body 3. A grinding block 22 is provided in the grinding groove 21, and the outer circumference of the grinding block 22 is spaced apart from the inner circumference of the grinding groove 21. A transmission shaft 23 is vertically penetrated in the grinding block 22, and a through hole 26 is provided on the inner bottom surface of the grinding groove 21, and the bottom end of the transmission shaft 23 passes through the through hole 26. A fixing plate 1 24 is fixed between the opposite inner side surfaces of the box body 3, and the top end of the transmission shaft 23 is rotatably mounted on the bottom surface of the fixing plate 1 24. A fixing plate 25 is fixed between the opposite inner side surfaces of the mounting seat 2, and the bottom end of the transmission shaft 23 is rotatably mounted on the top surface of the fixing plate 25. A power member 9 for driving the transmission shaft 23 to rotate is provided on the frame 11.

[0038] Reference Figure 3 and Figure 4 , a sieve plate 4 is obliquely arranged between the opposite inner sides of the mounting seat 2, and the sieve plate 4 is located below the fixed plate 25. A material receiving box 3 49 is arranged on the side of the mounting seat 2 away from the frame 11, and the material receiving box 3 49 is located below the bottom end of the sieve plate 4. Slide plates 41 are fixed to the opposite inner sides of the mounting seat 2, and a moving shaft 42 is fixed to one end of both sides of the sieve plate 4, and the moving shaft 42 overlaps the surface of the slide plate 41. A turntable 43 is arranged on both sides of the sieve plate 4, and the turntable 43 is located at one end of the sieve plate 4 away from the moving shaft 42. A connecting shaft 44 is rotatably installed on the side of the turntable 43 close to the sieve plate 4, and one end of the connecting shaft 44 away from the turntable 43 is fixed to the side of the sieve plate 4. A rotating shaft 45 is fixed to the side of the turntable 43 away from the sieve plate 4, and one end of the rotating shaft 45 away from the sieve plate 4 passes through the side of the mounting seat 2, and the rotating shaft 45 is rotatably connected to the mounting seat 2. A pulley 46 is sleeved and fixed on both ends of the crushing roller 32, a pulley 47 is sleeved and fixed on the end of the rotating shaft 45 away from the screen plate 4, and a transmission belt 48 is wound around the outer circumference of the pulley 46 and the pulley 47.

[0039] Reference Figure 1 and Figure 5 A transmission roller 1 5 and a transmission roller 2 51 are rotatably mounted between the opposite inner sides of the frame 11. The transmission roller 1 5 and the transmission roller 2 51 are arranged parallel to each other, and a conveyor belt 1 52 is sleeved on the outer circumference of the transmission roller 1 5 and the transmission roller 2 51. A motor 1 53 is fixed to the side of the frame 11, and the output shaft of the motor 1 53 is fixedly connected to one end of the transmission roller 1 5.

[0040] Reference Figure 1 and Figure 5The top surface of the frame 11 is fixed with a mounting frame 6, and a transmission roller 3 61 and a transmission roller 4 62 are rotatably mounted between the opposite inner sides of the mounting frame 6, and a conveyor belt 2 63 is wound around the outer peripheral surfaces of the transmission roller 3 61 and the transmission roller 4 62. A motor 2 64 is fixed to the side of the mounting frame 6, and the output shaft of the motor 2 64 is fixedly connected to one end of the transmission roller 3 61. A magnet plate 65 is fixed between the opposite inner sides of the mounting frame 6, and the magnet plate 65 is located inside the conveyor belt 2 63. A material receiving box 1 54 and a material receiving box 2 66 are provided at one end of the frame 11 away from the mounting seat 2, and the material receiving box 1 54 is located below the output end of the conveyor belt 1 52, and the material receiving box 2 66 is located below the output end of the conveyor belt 2 63.

[0041] Reference Figure 1 and Figure 5 A rotating shaft 7 is rotatably mounted between the opposite inner sides of the mounting frame 6, and a plurality of bristles 73 are fixed to the outer circumference of the rotating shaft 7. A second gear 72 is sleeved and fixed on one end of the rotating shaft 7, and a second gear 72 is sleeved and fixed on one end of the transmission roller 3 61 away from the second motor 64, and the first gear 71 meshes with the second gear 72.

[0042] Reference Figure 1 and Figure 5 A support plate 8 is fixed between the opposite inner sides of the mounting frame 6, and the support plate 8 is located on the side of the conveyor belt 2 63 close to the mounting seat 2. A rotating shaft 81 is rotatably mounted on the bottom surface of the support plate 8, a mounting rod 82 is fixed to the bottom end of the rotating shaft 81, and a plurality of rake rods 83 are fixed to the bottom end of the mounting rod 82. A motor 4 84 is fixed to the top surface of the support plate 8, and the output shaft of the motor 4 84 is fixedly connected to the top end of the rotating shaft 81. The power member 9 includes a pulley 3 91 sleeved on the rotating shaft 81, a pulley 4 92 is sleeved and fixed on the transmission shaft 23, and a transmission belt 2 93 is sleeved on the outer circumference of the pulley 3 91 and the pulley 4 92.

[0043] The implementation principle of the process for preparing ultrapure iron concentrate in the embodiment of the present application is as follows: pour the raw ore into the box 3, and start the motor 1 53, the motor 2 64, the motor 3 33 and the motor 4 84 at the same time. The output shaft of the motor 1 53 drives the crushing roller 1 31 to rotate, the crushing roller 1 31 drives the gear 3 34 to rotate, the gear 3 34 drives the gear 4 35 to rotate, so that the gear 4 35 drives the crushing roller 2 32 to rotate, so that the crushing roller 1 31 and the crushing roller 2 32 rotate to crush the raw ore. The crushed raw ore falls into the grinding trough 21, and the crushed raw ore is crushed for the second time by the grinding block 22. The raw ore after the second crushing falls on the screen plate 4. When the crushing roller 2 32 rotates, the crushing roller 2 32 drives the pulley 1 46 to rotate, the pulley 1 46 drives the transmission belt 1 48 to rotate, the transmission belt 1 48 drives the pulley 2 47 to rotate, so that the pulley 2 47 drives the rotating shaft 45 to rotate, the rotating shaft 45 drives the rotating disk 43 to rotate, the rotating disk 43 drives the connecting shaft 44 to rotate, and the connecting shaft 44 drives the screen plate 4 to shake, so that the screen plate 4 can shake the raw ore after the second crushing. The ore is screened, and the coarse ore after screening slides into the receiving box three 49 and is poured into the box body 3 for crushing again. The fine crushed stone after screening falls onto the conveyor belt 1 52. When the conveyor belt 1 52 is conveying the fine crushed stone, the magnetic plate 65 adsorbs the iron powder in the fine crushed stone onto the conveyor belt 2 63. Then when the conveyor belt 2 63 conveys the iron powder to the end of the mounting frame 6, the brush 73 brushes the iron powder on the conveyor belt 2 63 off and drops it into the receiving box 2 66. The iron ore powder on the conveyor belt 1 52 is conveyed to the receiving box 1 54, thereby improving the magnetic separation efficiency of the ore.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A process for preparing ultrapure iron concentrate, characterized in that: The following steps are involved: S1: First, the ultrapure iron concentrate preparation device (1) is used to perform coarse and fine crushing on the raw ore, and the ore powder after fine crushing is screened; S2: crushing the coarse gravel screened out; S3: subjecting the sieved fine gravel to magnetic separation; S4: Finally, the magnetically separated iron ore powder and iron ore powder are classified and collected.

2. The process for preparing ultrapure iron concentrate according to claim 1, characterized in that: The ultrapure iron concentrate preparation device (1) comprises a frame (11), a mounting seat (2) is arranged on the frame (11), a box body (3) is arranged on the top surface of the mounting seat (2), a crushing roller 1 (31) and a crushing roller 2 (32) are rotatably mounted between opposite inner side surfaces of the box body (3), a driving member for driving the crushing roller 1 (31) and the crushing roller 2 (32) to rotate relative to each other is arranged on the box body (3), and the top surface of the mounting seat (2) is provided with a box body (3). A grinding groove (21) is provided, a grinding block (22) is rotatably arranged in the grinding groove (21), a power member (9) for driving the grinding block (22) to rotate is provided on the frame (11), a sieve plate (4) is provided between the opposite inner side surfaces of the mounting seat (2), a driving component for driving the sieve plate (4) to shake is provided on the mounting seat (2), and a magnetic separation mechanism for magnetically separating the fine crushed stones after screening is provided on the frame (11).

3. A process for preparing ultrapure iron concentrate according to claim 2, characterized in that: The magnetic separation mechanism comprises a transmission roller 1 (5) and a transmission roller 2 (51) rotatably mounted between opposite inner side surfaces of the frame (11); a conveyor belt 1 (52) is sleeved on the outer circumference of the transmission roller 1 (5) and the transmission roller 2 (51); a motor 1 (53) is arranged on the side surface of the frame (11); an output shaft of the motor 1 (53) is fixedly connected to one end of the transmission roller 1 (5); a mounting frame (6) is fixedly mounted on the top surface of the frame (11); and the mounting frame (6) is relatively inner. A transmission roller three (61) and a transmission roller four (62) are rotatably mounted between the side surfaces, and a conveyor belt two (63) is sleeved on the outer circumference of the transmission roller three (61) and the transmission roller four (62). A motor two (64) is fixed to the side of the mounting frame (6), and the output shaft of the motor two (64) is fixedly connected to one end of the transmission roller three (61). A magnet plate (65) is fixed between the opposite inner side surfaces of the mounting frame (6), and the magnet plate (65) is located inside the conveyor belt two (63).

4. A process for preparing ultrapure iron concentrate according to claim 3, characterized in that: The output end of the second conveyor belt (63) is located on a side of the first conveyor belt (52) away from the mounting seat (2); a first material receiving box (54) and a second material receiving box (66) are provided on one end of the frame (11) away from the mounting seat (2); the first material receiving box (54) is located below the output end of the first conveyor belt (52); and the second material receiving box (66) is located below the output end of the second conveyor belt (63).

5. A process for preparing ultrapure iron concentrate according to claim 4, characterized in that: A rotating shaft (7) is rotatably mounted on the inner side surface relative to the mounting frame (6), a plurality of bristles (73) are fixed to the outer peripheral surface of the rotating shaft (7), a gear (71) is arranged at one end of the transmission roller (61) away from the motor (64), a gear (72) is arranged at one end of the rotating shaft (7), and the gear (71) is meshed with the gear (72).

6. A process for preparing ultrapure iron concentrate according to claim 2, characterized in that: The driving member comprises a motor three (33) arranged on the side of the box body (3), the output shaft of the motor three (33) is fixedly connected to one end of the crushing roller one (31), a gear three (34) is arranged at one end of the crushing roller one (31) away from the motor three (33), a gear four (35) is arranged at one end of the crushing roller two (32), and the gear three (34) is meshed with the gear four (35).

7. A process for preparing ultrapure iron concentrate according to claim 2, characterized in that: Slide plates (41) are fixed to the opposite inner sides of the mounting seat (2), and movable shafts (42) are fixed to the two side sides of the sieve plate (4), and the movable shafts (42) overlap the surfaces of the slide plates (41). The driving assembly comprises a turntable (43) arranged on both sides of the sieve plate (4), and a connecting shaft (44) is rotatably mounted on the side of the turntable (43) close to the sieve plate (4), and the central axis of the connecting shaft (44) is spaced apart from the central axis of the turntable (43). A rotating shaft (45) is fixed to the side of the turntable (43) away from the sieve plate (4), and one end of the rotating shaft (45) away from the sieve plate (4) passes through the side of the mounting seat (2), and the rotating shaft (45) is rotatably connected to the mounting seat (2), and a power assembly for driving the rotating shaft (45) to rotate is arranged on the second crushing roller (32).

8. A process for preparing ultrapure iron concentrate according to claim 7, characterized in that: The power assembly comprises a pulley 1 (46) arranged at both ends of the second crushing roller (32); a pulley 2 (47) is sleeved on one end of the rotating shaft (45) away from the screen plate (4); and a transmission belt 1 (48) is wound around the outer circumference of the pulley 1 (46) and the pulley 2 (47).

9. A process for preparing ultrapure iron concentrate according to claim 3, characterized in that: A support plate (8) is fixed between the opposite inner side surfaces of the mounting frame (6); a rotating shaft (81) is rotatably mounted on the bottom surface of the support plate (8); a mounting rod (82) is fixed to the bottom end of the rotating shaft (81); a rake rod (83) is fixed to the bottom surface of the mounting rod (82); a motor four (84) is fixed to the top surface of the support plate (8); and an output shaft of the motor four (84) is fixedly connected to the top end of the rotating shaft (81).

10. A process for preparing ultrapure iron concentrate according to claim 9, characterized in that: The power member (9) comprises a third pulley (91) arranged on the rotating shaft (81), a transmission shaft (23) is fixed to the bottom surface of the grinding block (22), a fourth pulley (92) is arranged on the transmission shaft (23), and a transmission belt (93) is wound around the third pulley (91) and the fourth pulley (92).

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