Magnetic separation equipment and mineral separation process for preparing titanium concentrate powder from ilmenite

Abstract

The invention relates to the technical field of mineral separation, in particular to magnetic separation equipment and a mineral separation process for preparing titanium concentrate powder from ilmenite, and the equipment comprises a bracket, a primary hopper, a secondary hopper and a multi-stage magnetic separation roller system. The magnetic separation roller is of a hollow shaft, a fan-shaped magnetic part and a roller structure, the magnetic part is composed of a magnetic conduction base plate and neodymium iron boron magnetic blocks arranged at intervals, the magnetic field is enhanced through the combination of the perpendicular magnetizing direction and the parallel magnetizing direction, and efficient adsorption separation of iron ore powder and titanium ore powder is achieved. The primary magnetic separation roller and the secondary magnetic separation roller are combined to separate iron fine powder, titanium fine powder and tailings. The process comprises the steps of ilmenite raw stone screening, crushing and grinding, wet magnetic separation and secondary magnetic separation after returned material dewatering and drying, the purity of titanium fine powder is improved through multi-stage separation, and resource recycling is achieved. The magnetic separation structure is high in innovativeness and separation efficiency, and the comprehensive utilization rate of ilmenite is remarkably increased.

Description

Technical Field

[0001] The present invention relates to the field of mineral processing technology, and in particular to magnetic separation equipment and a mineral processing process for preparing titanium concentrate by utilizing ilmenite. Background Art

[0002] Ilmenite is an important raw material for extracting titanium and titanium compounds. Its magnetic separation and purification process directly affects the grade and recovery rate of titanium concentrate. At present, the commonly used flotation process is generally completed by combining magnetic separation and chemical agent purification. After the ilmenite powder is preliminarily selected by a dry drum magnetic separator, the preliminarily selected ore powder is further processed and purified using agents such as oxalic acid. The finished ilmenite product selected in this process has a low grade, the operation process is cumbersome, the purification efficiency is low, and there are problems of environmental pollution and excessive cost.

[0003] In addition, the maximum magnetic field outside the barrel of the traditional dry drum magnetic separator can only reach 7000GS, and the maximum linear speed of the drum cannot exceed 2 meters per second. Therefore, it is difficult to achieve the requirements of finished concentrate powder simply through the process flow of magnetic separation equipment. As a result, magnetic separation equipment can only be used as a pre-selection auxiliary for the purification of ilmenite, and cannot be relied upon solely for processing to the final stage. Summary of the invention

[0004] In order to solve the aforementioned technical problems, the present invention provides a magnetic separation device for preparing titanium concentrate using ilmenite. The device adopts a multi-stage magnetic separation method to accurately distinguish a variety of mineral powders at one time, thereby solving the problem of low purification efficiency in existing purification methods. By improving the magnetic material, the magnetic field strength and the drum rotation speed are increased, thereby solving the problem of low grade of the selected ilmenite finished product. This is specifically achieved through the following technical solutions.

[0005] The present invention discloses a magnetic separation device for preparing titanium concentrate from ilmenite, comprising a bracket, on the top of which two primary hoppers are installed side by side, and a material dropping adjustment part is provided at the discharge port at the bottom of the primary hopper for adjusting the material dropping angle and speed.

[0006] Two first magnetic separation rollers are respectively located directly below the primary hopper. Each first magnetic separation roller comprises a hollow shaft, a plurality of support plates fixed on the hollow shaft and a magnetic part installed on the support plate. The outer sleeve of the magnetic part is provided with a roller rotatably installed on the hollow shaft.

[0007] The secondary hopper is located below the first magnetic separation roller and includes a first hopper in the middle and two second hoppers symmetrically distributed, and is used to separate iron ore powder from titanium ore powder.

[0008] The driving part drives the drum to rotate around the hollow shaft through a belt transmission mechanism.

[0009] A second magnetic separation roller and a third magnetic separation roller are also provided below the secondary hopper, and the structures thereof are the same as those of the first magnetic separation roller, and the second magnetic separation roller is located directly below the first hopper, and the third magnetic separation roller is located directly below the second hopper; A material discharge section is provided below the second magnetic separation roller and the third magnetic separation roller, which includes a first material channel, a second material channel, a third material channel, a fourth material channel and a fifth material channel, which are respectively used for discharging iron ore concentrate, titanium concentrate, return material and tailings.

[0010] Preferably, the magnetic part comprises a magnetic conductive pad and a first magnetic block and a second magnetic block which are spaced apart from each other. The first magnetic block is fixedly mounted on the magnetic conductive pad, and the second magnetic block is mounted on the magnetic conductive pad via a magnetic insulating pad.

[0011] The magnetization direction of the first magnetic block is parallel to the length direction of the magnetic conductive pad, the magnetization direction of the second magnetic block is perpendicular to the length direction of the magnetic conductive pad, and the same magnetic poles of the first magnetic block and the second magnetic block are close to each other.

[0012] Preferably, an end cover is rotatably mounted on the hollow shaft, the end cover is fixed to the roller, and the end cover is coaxially fixed to the first pulley.

[0013] Preferably, the driving unit comprises a motor, the motor is fixed to the bracket, the output end of the motor is coaxially fixed to the second pulley, and the second pulley is connected to the first pulley through a transmission belt.

[0014] Preferably, a lubricating oil channel is provided in the hollow shaft, and an oil pipe is fixedly installed at the end of the hollow shaft, and the oil pipe is connected to the lubricating oil channel.

[0015] Preferably, the blanking adjustment part includes an adjustment ring, which is coaxially fixed with the first rotating shaft, the first rotating shaft is rotatably mounted on the bracket, a first baffle is mounted on the first rotating shaft, and the first baffle is located at the discharge port at the bottom of the primary hopper.

[0016] Preferably, a guide portion is provided between adjacent material channels of the blanking portion, and the guide portion comprises a mounting seat, the mounting seat is mounted on a bracket, and a second rotating shaft is rotatably mounted on the mounting seat.

[0017] The fastening bolt is threadedly connected to a nut fixed on the mounting seat, and the end of the fastening bolt can abut against the second rotating shaft. A second baffle is fixedly mounted on the second rotating shaft, and the second baffle is used for guiding the blanking.

[0018] A third baffle is also fixedly mounted on the side of the second rotating shaft, and the third baffle is used to separate adjacent material channels.

[0019] Preferably, the driving unit drives the first pulley to rotate in a direction opposite to a direction of material falling from the outer surface of the drum.

[0020] Preferably, the magnetic part is a fan-shaped structure and is coaxially arranged with the hollow shaft.

[0021] The present invention discloses a beneficiation process for preparing titanium concentrate using ilmenite, which uses the above-mentioned magnetic separation equipment to complete the beneficiation, and comprises the following steps: S1. Preliminary screening of the ilmenite ore raw material, removal of tailings and dry magnetic separation of the remaining ore to obtain ilmenite ore.

[0022] S2. Using a mill to crush and grind the ilmenite ore, and obtaining ilmenite ore powder and some incompletely ground coarse ore after screening, and transferring the coarse ore to the mill for recycling.

[0023] S3, adding an appropriate amount of clean water to the ilmenite powder obtained in step S2, and obtaining iron ore concentrate, tailings and return material after two wet magnetic separations.

[0024] S4, dehydrating the return material obtained in step S3, collecting the liquid into a thickening tank, draining and drying the solid to obtain return material ore powder.

[0025] S5. The returned ore powder obtained in step S4 is subjected to magnetic separation using a magnetic separation device to obtain titanium concentrate, iron concentrate and tailings.

[0026] After adopting the above technical solution, the beneficial effects of the present invention are: 1. The magnetic separation equipment is used for magnetic separation of ilmenite, which optimizes the traditional ilmenite beneficiation process, simplifies the process steps and improves the beneficiation efficiency.

[0027] 2. By improving the magnetic structure of the magnetic roller, the magnetic field strength of the magnetic roller is increased, and a high-speed lubricating oil channel is provided on the main shaft so that the roller can achieve a high speed. The combination of the two effectively improves the magnetic separation efficiency.

[0028] 3. Through the primary hopper, multi-stage magnetic separation rollers and return material circulation system, the processing efficiency of ilmenite ore powder is significantly improved, and continuous and large-scale production is achieved.

[0029] 4. The process design combines dry magnetic separation with wet magnetic separation to effectively remove impurities, and gradually purifies through multi-stage sorting, making the final titanium concentrate purity significantly better than traditional processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the structure of a magnetic separation device for preparing titanium concentrate using ilmenite; Figure 2 It is a partial structural schematic diagram of magnetic separation equipment; Figure 3 It is a structural schematic diagram of the blanking adjustment part; Figure 4 It is a schematic structural diagram of the first magnetic separation roller and the driving part; Figure 5 is a cross-sectional view of the first magnetic separation roller; Figure 6 for Figure 5 Schematic diagram of some structures; Figure 7 for Figure 6 A partial enlarged view of the middle A area; Figure 8 for Figure 7 Schematic diagram of the disassembly of the middle part structure; Fig. 9 is a structural schematic diagram of the guide part; Fig.10 This is the process flow chart of ilmenite beneficiation and purification.

[0032] Description of reference numerals: 101- bracket, 102- primary hopper, 103- guide trough, 110- blanking adjustment part, 111- adjustment ring, 112- first rotating shaft, 113- first baffle, 120- secondary hopper, 121- first hopper, 122- second hopper, 130- guide part, 131- mounting seat, 132- second rotating shaft, 133- fastening bolt, 134- second baffle, 135- third baffle, 140- blanking part, 141- first material channel, 142- second material channel, 143- third material channel, 144- fourth material channel, 145- fifth material channel; 200-first magnetic separation roller, 201-hollow shaft, 202-support plate, 203-end cover, 204-drum, 205-first pulley, 206-lubricating oil channel, 207-oil pipe, 210-magnetic part, 211-magnetic conductive pad, 212-magnetic insulating pad, 213-first magnetic block, 214-second magnetic block; 300-second magnetic separation roller; 400-third magnetic separation roller; 500 - driving unit, 501 - motor, 502 - second pulley, 503 - transmission belt. DETAILED DESCRIPTION

[0033] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0034] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation, connection" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] The embodiment of the present invention provides a magnetic separation device for preparing titanium concentrate using ilmenite, see Figure 1 , Figure 2 , Figure 3 The magnetic separation equipment for preparing titanium concentrate using ilmenite includes a bracket 101, and two primary hoppers 102 are installed side by side at the same horizontal height on the top of the bracket 101. The primary hopper 102 is used to hold ilmenite powder. A discharge port is opened at the bottom of the primary hopper 102, and a blanking adjustment part 110 is installed at the discharge port to adjust the blanking angle and blanking speed.

[0036] The blanking adjustment part 110 includes an adjustment ring 111, which is coaxially fixed with the first rotating shaft 112. The first rotating shaft 112 is rotatably mounted on the bracket 101. A V-shaped first baffle 113 is fixedly mounted on the side of the first rotating shaft 112. The first baffle 113 is located at the discharge port at the bottom of the primary hopper 102.

[0037] A first magnetic separation roller 200 is installed directly below the two primary hoppers 102 . The first magnetic separation roller 200 is used for the primary separation of ilmenite ore powder, and separates iron ore powder and titanium ore powder into different flow channels.

[0038] A plurality of driving parts 500 are fixedly mounted on the bracket 101 for driving the first magnetic separation roller 200 to rotate.

[0039] A secondary hopper 120 is installed below the two first magnetic separation rollers 200. The secondary hopper 120 includes a first hopper 121 located in the middle and two second hoppers 122 located on both sides. The two second hoppers 122 are symmetrical about the center of the first hopper 121. The first hopper 121 is located directly below the two first magnetic separation rollers 200, and the second hopper 122 is located on the lower side of the first magnetic separation roller 200.

[0040] See also Figure 4 , Figure 5 The first magnetic separation roller 200 includes a hollow shaft 201, which is fixedly mounted on the bracket 101. The outer surface of the hollow shaft 201 is fixed with the first ends of several support plates 202 along the length direction of the hollow shaft 201. The second ends of the support plates 202 are fixedly connected to the magnetic part 210. The magnetic part 210 is a fan-shaped structure and is coaxially arranged with the hollow shaft 201.

[0041] The support plate 202 is a non-magnetic support plate to avoid affecting the magnetic field of the magnetic part 210 and further affecting the mineral processing effect.

[0042] End covers 203 are rotatably mounted on both sides of the hollow shaft 201 , and rollers 204 are fixedly mounted on the end covers 203 . The rollers 204 are coaxially arranged with the hollow shaft 201 , and the inner surface of the rollers 204 is in close contact with the outer surface of the magnetic part 210 .

[0043] The driving unit 500 includes a motor 501 , which is fixed to the bracket 101 . The output end of the motor 501 is coaxially fixed to the second pulley 502 . The second pulley 502 is connected to the first pulley 205 via a transmission belt 503 . The first pulley 205 is coaxially fixed to one of the end covers 203 .

[0044] Among them, the magnetic parts 210 in the two first magnetic separation rollers 200 are symmetrically distributed about the center of the first hopper 121, and are respectively located on the side away from the first hopper 121. The two dropping adjustment parts 110 adjust the dropping position of the ilmenite in the primary hopper 102 to the top of the side of the outer surface of the drum 204 close to the magnetic part 210.

[0045] The driving unit 500 drives the first pulley 205 to rotate in a direction opposite to the material falling direction of the outer surface of the drum 204 .

[0046] When the above structure is used for primary sorting of ilmenite in this embodiment, the ilmenite powder in the primary hopper 102 is first dropped at an appropriate flow rate through the dropping adjustment part 110, and the dropping position is located on the side of the outer surface of the drum 204 close to the magnetic part 210. At this time, the motor 501 drives the first pulley 205 to rotate through the second pulley 502 and the transmission belt 503, and further drives the end cover 203 and the drum 204 to rotate around the axis of the hollow shaft 201 through the first pulley 205, and the rotation direction of the drum 204 is opposite to the dropping direction of the ilmenite on the outer surface of the drum 204.

[0047] As the position of the magnetic portion 210 inside the drum 204 remains unchanged during its rotation, due to the difference in magnetic susceptibility between the iron ore powder and the titanium ore powder, iron ore powder and a small portion of titanium ore powder will adhere to the outer surface of the drum 204 close to the magnetic portion 210 under the action of the magnetic field. This portion of ore powder will rotate with the drum 204 until it is transferred to a position outside the magnetic zone, where it is no longer attracted by the magnetic field and falls downward under the action of its own gravity.

[0048] Based on the above principle, in the primary sorting process of ilmenite ore powder, iron ore powder and a small portion of titanium ore powder are sorted into the first hopper 121 , and most of the titanium ore powder and tailings are sorted into the second hopper 122 .

[0049] As a further explanation of the above embodiments, see Figure 6 , Figure 7 , Figure 8 The magnetic part 210 includes a magnetic conductive pad 211, the second ends of the plurality of support plates 202 are fixed to the inner surface of the magnetic conductive pad 211, and the outer surface of the magnetic conductive pad 211 is installed with a plurality of first magnetic blocks 213 and second magnetic blocks 214, the first magnetic blocks 213 and the second magnetic blocks 214 are arranged at intervals, and the second magnetic blocks 214 are fastened to the outer surface of the magnetic conductive pad 211 by bolts, and a magnetic insulating pad 212 is provided between the first magnetic block 213 and the magnetic conductive pad 211, and the first magnetic block 213 and the magnetic insulating pad 212 are fastened to the outer surface of the magnetic conductive pad 211 by bolts.

[0050] The magnetization direction of the second magnetic block 214 is perpendicular to the length direction of the magnetic pad 211 , the magnetization direction of the first magnetic block 213 is parallel to the length direction of the magnetic pad 211 , and the same magnetic poles of the second magnetic block 214 and the first magnetic block 213 are close to each other.

[0051] The first magnetic block 213 and the second magnetic block 214 are neodymium iron boron magnets.

[0052] Through the magnetization direction and arrangement structure of the first magnetic block 213 and the second magnetic block 214, the magnetism of the magnetic part 210 is greatly enhanced, thereby effectively realizing the adsorption and separation of iron ore powder, which is beneficial to improving the sorting effect of ilmenite ore powder and ensuring the purity of the ore powder after sorting.

[0053] A lubricating oil passage 206 is provided in the hollow shaft 201 , an oil outlet hole is opened in the hollow shaft 201 at the installation position of the end cover 203 , an oil pipe 207 is fixedly installed at the end of the hollow shaft 201 , and the oil pipe 207 is connected to the lubricating oil passage 206 .

[0054] Through the above structure, effective lubrication of the installation position of the end cover 203 can be achieved, thereby reducing the resistance of the end cover 203 when rotating relative to the hollow shaft 201, which is beneficial to increasing the rotation speed of the end cover 203 and the drum 204, thereby increasing the sorting speed of the mineral powder and improving work efficiency.

[0055] As a further explanation of the above embodiments, see Figure 2 The bottom discharge ports of the first hopper 121 and the second hopper 122 are respectively fixedly provided with guide troughs 103 for guiding the flow direction and the drop position of the mineral powder.

[0056] A second magnetic separation roller 300 is installed directly below the first hopper 121, and a third magnetic separation roller 400 is installed directly below the two second hoppers 122. The structure and working principle of the second magnetic separation roller 300 and the third magnetic separation roller 400 are the same as those of the first magnetic separation roller 200. The second magnetic separation roller 300 and the third magnetic separation roller 400 are used to complete the secondary separation of ilmenite.

[0057] A material blanking portion 140 is installed below the second magnetic separation roller 300 and the third magnetic separation roller 400. The material blanking portion 140 includes a first material channel 141, a second material channel 142, a third material channel 143, a fourth material channel 144 and a fifth material channel 145. The first material channel 141 is installed directly below the second magnetic separation roller 300, and the second material channel 142 is installed on the side and lower side of the second magnetic separation roller 300. The first material channel 141 is used to output iron ore concentrate, and the second material channel 142 is used to output returned materials.

[0058] A third material channel 143 is installed directly below the third magnetic separation roller 400, a fourth material channel 144 is installed on the side of the third material channel 143 away from the first material channel 141, and a fifth material channel 145 is installed on the side of the fourth material channel 144 away from the first material channel 141. The third material channel 143 is used to output titanium concentrate, the fourth material channel 144 is used to output return materials, and the fifth material channel 145 is used to output tailings.

[0059] The return material output through the second material channel 142 and the fourth material channel 144 is transferred to the primary hopper 102 for recycling.

[0060] A guide portion 130 is installed between the feed inlets of the two adjacent material channels, so as to realize the diversion of materials entering different material channels.

[0061] The corresponding drop positions of the second magnetic separation roller 300 and the third magnetic separation roller 400 are located at the top of their respective magnetic regions, and the magnetic region in the third magnetic separation roller 400 is arranged on a side away from the second magnetic separation roller 300 .

[0062] As a further explanation of the above embodiments, see Fig. 9 The guide portion 130 includes a mounting seat 131, which is mounted on the bracket 101. A second rotating shaft 132 is rotatably mounted on the mounting seat 131. A fastening bolt 133 is threadedly connected to a nut fixed on the mounting seat 131, and an end of the fastening bolt 133 can abut against an outer surface of the second rotating shaft 132. A second baffle 134 is fixedly mounted on the second rotating shaft 132. The second baffle 134 is used to guide the falling material to facilitate the falling material to fall into the material channel. A third baffle 135 is also fixedly mounted on the side of the second rotating shaft 132. The third baffle 135 is used to separate adjacent material channels to avoid mixing of materials during the falling process.

[0063] The embodiment of the present invention also provides a beneficiation process for preparing titanium concentrate using ilmenite, see Fig.10 The ore dressing process uses the above magnetic separation equipment to achieve ore dressing, and specifically includes the following steps: S1. Preliminary screening of the ilmenite ore raw material, removal of tailings and dry magnetic separation of the remaining ore to obtain ilmenite ore.

[0064] Since the ilmenite ore rich in ilmenite is relatively hard and easily accumulated into blocks or lumps, the ilmenite raw stone is firstly screened to separate the powdery and granular impurities in the original ore, and the remaining ore is magnetically separated to obtain the ilmenite-rich ore to complete the purification of titanium powder and iron powder.

[0065] S2. Using a mill to crush and grind the ilmenite ore, and obtaining ilmenite ore powder and some incompletely ground coarse ore after screening, and transferring the coarse ore to the mill for recycling.

[0066] The above ore is crushed by a mill, the ground ore powder is separated by a grading screen, and the larger ore is repeatedly ground and screened so that it can meet the subsequent mineral processing needs.

[0067] S3, adding an appropriate amount of clean water to the ilmenite powder obtained in step S2, and obtaining iron ore concentrate, tailings and return material after two wet magnetic separations.

[0068] The above-mentioned ground and screened ore powder is added with clean water and then subjected to two wet magnetic separations. The first wet magnetic separation separates the iron ore concentrate from the ore powder, and the remaining ore powder is subjected to the second wet magnetic separation. The second wet magnetic separation separates the remaining ore powder into return material and tailings. The return material contains ferrotitanium powder, which needs further separation.

[0069] S4, dehydrating the return material obtained in step S3, collecting the liquid into a thickening tank, draining and drying the solid to obtain return material ore powder.

[0070] The returned material is dehydrated, drained and dried to remove the moisture therein, thereby obtaining dry returned material ore powder, which is convenient for subsequent magnetic separation using the above-mentioned magnetic separation equipment.

[0071] S5. The returned ore powder obtained in step S4 is subjected to magnetic separation using the above-mentioned magnetic separation equipment to obtain titanium concentrate, iron concentrate and tailings.

[0072] The returned ore powder obtained above is added into the primary hopper 102 of the magnetic separation equipment. After magnetic separation, iron concentrate is output from the first material channel 141 of the magnetic separation equipment, titanium concentrate is output from the third material channel 143, and tailings are output from the fifth material channel 145, thereby completing the magnetic separation of titanium concentrate in ilmenite.

[0073] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the only specific embodiments. Obviously, based on the above description, many modifications and changes can be made. 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 make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic separation device for preparing titanium concentrate using ilmenite, characterized in that: include A bracket (101) has two primary hoppers (102) mounted side by side on its top, and a material drop adjustment portion (110) is provided at a material discharge port at the bottom of the primary hopper (102) for adjusting a material drop angle and speed; Two first magnetic separation rollers (200) are respectively located directly below the primary hopper (102), each of the first magnetic separation rollers (200) comprising a hollow shaft (201), a plurality of support plates (202) fixed on the hollow shaft (201), and a magnetic part (210) mounted on the support plate (202), the outer shell of the magnetic part (210) being provided with a roller (204) rotatably mounted on the hollow shaft (201); A secondary hopper (120), which is located below the first magnetic separation roller (200), comprises a first hopper (121) in the middle and two second hoppers (122) distributed symmetrically, and is used to separate iron ore powder from titanium ore powder; A driving unit (500) drives the roller (204) to rotate around the hollow shaft (201) via a belt transmission mechanism; A second magnetic separation roller (300) and a third magnetic separation roller (400) are also provided below the secondary hopper (120), and their structures are the same as those of the first magnetic separation roller (200), and the second magnetic separation roller (300) is located directly below the first hopper (121), and the third magnetic separation roller (400) is located directly below the second hopper (122); A material discharge section (140) is provided below the second magnetic separation roller (300) and the third magnetic separation roller (400), and includes a first material channel (141), a second material channel (142), a third material channel (143), a fourth material channel (144) and a fifth material channel (145), which are respectively used to discharge iron ore concentrate, titanium concentrate, return material and tailings.

2. The magnetic separation equipment for preparing titanium concentrate using ilmenite according to claim 1, characterized in that: The magnetic part (210) comprises a magnetically conductive pad (211) and a first magnetic block (213) and a second magnetic block (214) which are arranged at intervals, wherein the first magnetic block (213) is fixedly mounted on the magnetically conductive pad (211), and the second magnetic block (214) is mounted on the magnetically conductive pad (211) via a magnetically insulating pad (212); The magnetization direction of the first magnetic block (213) is parallel to the length direction of the magnetic conductive pad, the magnetization direction of the second magnetic block (214) is perpendicular to the length direction of the magnetic conductive pad, and the same magnetic poles of the first magnetic block (213) and the second magnetic block (214) are close to each other.

3. The magnetic separation equipment for preparing titanium concentrate using ilmenite according to claim 1, characterized in that: An end cover (203) is rotatably mounted on the hollow shaft (201); the end cover (203) is fixed to the roller (204); and the end cover (203) is coaxially fixed to the first pulley (205).

4. The magnetic separation equipment for preparing titanium concentrate using ilmenite according to claim 1, characterized in that: The driving unit (500) comprises a motor (501), the motor (501) being fixed to a bracket (101), the output end of the motor (501) being coaxially fixed to a second pulley (502), and the second pulley (502) being connected to the first pulley (205) via a transmission belt (503).

5. The magnetic separation equipment for preparing titanium concentrate from ilmenite according to claim 1, characterized in that: A lubricating oil passage (206) is provided in the hollow shaft (201), and an oil pipe (207) is fixedly mounted on the end of the hollow shaft (201), wherein the oil pipe (207) is in communication with the lubricating oil passage (206).

6. The magnetic separation equipment for preparing titanium concentrate from ilmenite according to claim 1, characterized in that: The material drop adjustment portion (110) comprises an adjustment ring (111), the adjustment ring (111) being coaxially fixed to a first rotating shaft (112), the first rotating shaft (112) being rotatably mounted on a bracket (101), a first baffle (113) being mounted on the first rotating shaft (112), the first baffle (113) being located at a position where a material discharge port is located at the bottom of the primary hopper (102).

7. The magnetic separation equipment for preparing titanium concentrate from ilmenite according to claim 1, characterized in that: A guide portion (130) is provided between adjacent material channels of the blanking portion (140), the guide portion (130) comprising a mounting seat (131), the mounting seat (131) being mounted on the bracket (101), and a second rotating shaft (132) being rotatably mounted on the mounting seat (131); The fastening bolt (133) is threadedly connected to a nut fixed on the mounting seat (131); the end of the fastening bolt (133) can abut against the second rotating shaft (132); a second baffle (134) is fixedly mounted on the second rotating shaft (132); the second baffle (134) is used to guide the falling material; A third baffle (135) is also fixedly mounted on the side of the second rotating shaft (132), and the third baffle (135) is used to separate adjacent material channels.

8. The magnetic separation equipment for preparing titanium concentrate from ilmenite according to claim 4, characterized in that: The driving unit (500) drives the first pulley (205) to rotate in a direction opposite to a direction in which the material falls from the outer surface of the drum (204).

9. The magnetic separation equipment for preparing titanium concentrate from ilmenite according to claim 1, characterized in that: The magnetic part (210) is a fan-shaped structure and is coaxially arranged with the hollow shaft (201).

10. A beneficiation process for preparing titanium concentrate using ilmenite, characterized in that: The method of using the magnetic separation equipment according to any one of claims 1 to 9 to complete mineral separation specifically comprises the following steps: S1. Preliminarily screening the ilmenite ore, removing the tailings and performing dry magnetic separation on the remaining ore to obtain ilmenite ore; S2, using a mill to crush and grind the ilmenite ore, and after screening, obtain ilmenite ore powder and some incompletely ground coarse ore, and transfer the coarse ore to the mill for recycling; S3, adding an appropriate amount of clean water to the ilmenite powder obtained in step S2, and obtaining iron ore concentrate, tailings and return material after two wet magnetic separations; S4, dehydrating the return material obtained in step S3, collecting the liquid into a thickening tank, draining and drying the solid to obtain return material ore powder; S5. The returned ore powder obtained in step S4 is subjected to magnetic separation using a magnetic separation device to obtain titanium concentrate, iron concentrate and tailings.

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