Process for separating titanium from ilmenite
Through the process flow of screening, iron removal, desilt concentration and multi-stage spiral chute sorting, the problem of impurities in ilmenite affecting the recovery rate is solved, and the effect of reducing the running tail amount and improving the recovery rate is achieved.
Patent Information
- Application Number
- CN202510517800.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2025-07-04
AI Technical Summary
Ilmenite contains some undisassembled and separated impurities, resulting in a high tail running volume during reselection, affecting the recovery rate.
The process flow of screening, iron removal, desilting, ball milling and multi-stage spiral chute sorting is adopted. Non-magnetic substances are removed through a high-gradient magnetic separator, combined with the multi-stage sorting of ball mill and spiral chute, optimize particle size control and gradually remove impurities.
The tail running volume is reduced, the recovery rate of ilmenite is improved, the process flow is more reasonable and accurate, and the adverse impact on the recovery rate is reduced.
Smart Images
Figure CN120243260A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of ore dressing, and particularly to a titanium-iron ore titanium separation process. Background Art
[0002] Ilmenite is an oxide mineral of iron and titanium, also known as titanomagnetite, and is the main ore for extracting titanium. The methods of separating titanium from ilmenite mainly include gravity separation, flotation, electrostatic separation, etc. Among them, the gravity separation process has the characteristics of low production cost and little environmental pollution.
[0003] When the gravity separation process is used to separate titanium, the raw materials are usually coarsely crushed and medium-crushed, and then gangue minerals and slime are removed through gravity separation equipment such as jigs, spiral chutes, and shaking tables until the titanium separation is completed.
[0004] Since ilmenite usually contains some undisintegrated and unseparated impurities, there is a high possibility of high tailing loss during gravity separation because some titanium is removed with the impurities, which will have an adverse effect on the recovery rate. Summary of the Invention
[0005] In order to reduce the tailing loss and reduce the adverse effect on the recovery rate, this application provides a titanium-iron ore titanium separation process.
[0006] The titanium-iron ore titanium separation process provided by this application adopts the following technical solution: A titanium-iron ore titanium separation process includes the following steps: S1. Screening: The raw materials are screened by a cylindrical screen to form oversize and undersize, and the oversize is removed; S2. Iron removal: The undersize formed in S1 is passed through a magnetic separator to remove iron powder, forming the undersize after iron removal; S3. Optimization: After the grade of the undersize after iron removal obtained in S2 is improved, magnetic substances, water, and non-magnetic ore are formed. The water and non-magnetic ore are discharged into a sand dredger for sand washing, and construction aggregate is formed after a dehydration process; S4. The magnetic substances formed in S3 are subjected to slime concentration treatment through a thickening hopper to form concentrated material, and at this time, the concentration of the concentrated material is suitable for ore dressing; S5. Re-screening: The concentrated material obtained in S4 is screened by a hydrocyclone to form coarse material and fine material. The coarse material is disintegrated by a ball mill to separate impurities from minerals, forming magnetic ore; S6. Sorting: The fine materials obtained in S3 and the magnetic ore obtained in S5 enter a primary spiral chute, forming primary concentrate, primary middlings, primary tailings, water, and minerals with low specific gravity. The water and minerals with low specific gravity are discharged into a sand dredger for sand washing, and after the dehydration process, building aggregates are formed. The primary middlings enter a secondary spiral chute, thus forming secondary concentrate, secondary middlings, and secondary tailings. The primary concentrate enters a tertiary spiral chute, forming tertiary concentrate, tertiary middlings, and tertiary tailings. The primary tailings and secondary tailings are secondarily optimized to form tailing concentrate and optimized tailings. The tailing concentrate returns to the primary spiral chute for re-selection, and the optimized tailings enter the sand dredger and are dehydrated and screened into building aggregates; The secondary concentrate enters the tertiary spiral chute, and the secondary middlings return to the secondary spiral chute for re-selection; The tertiary concentrate is dehydrated by a demagnetizing and dehydrating device to form a finished product. The tertiary middlings return to the tertiary spiral chute for continuous re-selection, and the tertiary tailings return to the secondary spiral chute for continuous re-selection until the raw material sorting is completed.
[0007] By adopting the above technical solution, the grade of the raw material is raised through optimization, and through steps such as desliming, thickening, and screening, coarse materials and fine materials are formed. The coarse materials are ball-milled by a ball mill to reach the required particle size, and then the steps of desliming, thickening, and screening are carried out again, so that all the raw materials are formed into fine materials. The fine materials are sorted by the primary spiral chute, secondary spiral chute, and tertiary spiral chute, continuously removing impurities, reducing tailing losses, and improving the recovery rate. The process flow is reasonable, and the control of each step is more accurate and convenient, achieving the effect of reducing the tailing loss and reducing the adverse impact on the recovery rate.
[0008] Optionally, the method for improving the grade of the undersize product in S3 is: improving the grade of the undersize product obtained after iron removal in S2 by a high-gradient magnetic separator.
[0009] By adopting the above technical solution, non-magnetic substances in the raw material are removed by a high-gradient magnetic separator, thereby reducing the amount of raw material processed in the process, and at the same time reducing the possibility that the raw materials that have not been disintegrated and separated are discharged with impurities due to their relatively light weight during the sorting by the primary spiral chute, secondary spiral chute, and tertiary spiral chute, thereby reducing the tailing loss and reducing the adverse impact on the recovery rate.
[0010] Optionally, the ball mill includes a ball mill body. At the feeding end of the ball mill body, there is a feeding box communicating with the inside of the ball mill body. A sieve plate is provided in the feeding box. A pushing plate is provided in the feeding box and slides on the upper side of the sieve plate. A driving assembly for driving the pushing plate to move is provided in the feeding box. Receiving hoppers communicating with the inside of the feeding box are provided on both sides of the feeding box, and crushing assemblies are provided in the receiving hoppers.
[0011] By adopting the above technical solution, the coarse materials enter the feed box and are screened by the sieve plate. At this time, some of the coarse materials with small particle sizes pass through the sieve plate and enter the ball mill body for ball milling, while the raw materials with large particle sizes are retained on the sieve plate. The driving assembly drives the push plate to reciprocate along the direction of the connection line between the two receiving hoppers, so as to move the coarse materials with large particle sizes on the sieve plate into the receiving hoppers on both sides of the feed box. After being crushed by the crushing assembly to reduce the particle size, they are moved back into the feed box again, which is convenient for the ball mill body to crush the coarse materials, thereby reducing the tailing amount and minimizing the adverse impact on the recovery rate.
[0012] Optionally, the crushing assembly includes an extrusion ring fixedly connected inside the receiving hopper and lower than the upper side height of the sieve plate. The diameter of the extrusion ring gradually increases downward, and a plurality of extrusion teeth are fixedly connected to the inner side wall of the extrusion ring. An extrusion plate with an outer diameter gradually decreasing upward is arranged in the extrusion ring. The distance between the extrusion ring and the extrusion plate gradually decreases downward. The extrusion plate is rotatably connected to the receiving hopper. A plurality of extrusion holes are formed in the extrusion plate, and a plurality of extrusion teeth are also fixedly connected to the outer side wall of the extrusion plate. A rotating assembly for driving the extrusion plate to rotate is provided on each of the receiving hoppers.
[0013] By adopting the above technical solution, the coarse materials with large particle sizes enter the receiving hopper and move between the extrusion ring and the extrusion plate. The rotating assembly drives the extrusion plate to rotate. At this time, the extrusion teeth on the extrusion plate and the extrusion ring extrude the coarse materials until the particle size of the coarse materials can pass through the extrusion holes and move to the feed box along the lower side of the receiving hopper, which is convenient for the ball mill body to crush the coarse materials, thereby reducing the tailing amount and minimizing the adverse impact on the recovery rate.
[0014] Optionally, the rotating assembly includes a gear ring sleeved and fixedly connected to the lower end of the extrusion plate. The gear ring is inserted into the side wall of the receiving hopper and rotatably connected to the receiving hopper. A gear meshing with the gear ring is rotatably connected to one side outside the receiving hopper. A driving member for driving the gear to rotate is provided on the feed box.
[0015] By adopting the above technical solution, the driving member drives the gear to drive the gear ring to rotate. At this time, the extrusion plate fixed to the gear ring rotates with the gear ring, which is convenient for cooperating with the extrusion ring to extrude the coarse materials, reducing the particle size of the coarse materials, and facilitating the ball mill body to crush the coarse materials, thereby reducing the tailing amount and minimizing the adverse impact on the recovery rate.
[0016] Optionally, an extrusion table with a gradually decreasing diameter is provided in the receiving hopper, an extrusion groove adapted to the upper side of the extrusion plate is formed on the lower side of the extrusion table, a plurality of extrusion teeth are also fixedly connected to the side wall of the extrusion table, a sliding rod fixedly connected to the upper side of the extrusion table and passing through the receiving hopper and slidably connected to the receiving hopper is provided, the end of the sliding rod is bent in the direction close to the gear, and a second reciprocating lead screw fixedly connected to the gear is inserted and threadedly connected to the bent end of the sliding rod.
[0017] By adopting the above technical solution, the second reciprocating lead screw is driven to drive the gear to rotate. At this time, the sliding rod drives the extrusion table to reciprocate in the direction close to or away from the extrusion plate under the drive of the second reciprocating lead screw, so as to cooperate with the extrusion plate and the extrusion ring, further facilitating the extrusion of the coarse material, reducing the particle size of the coarse material, facilitating the ball mill body to crush the coarse material, thereby reducing the tailing amount and reducing the adverse impact on the recovery rate.
[0018] Optionally, the driving assembly includes a moving block fixedly connected to one side of the baffle and inserted into the side wall of the feeding box. A first reciprocating lead screw arranged along the movement direction of the pushing plate is inserted and threadedly connected to the moving block. The ends of the first reciprocating lead screw pass through the side wall of the feeding box and are rotatably connected to the feeding box, and a motor is installed at one end of the first reciprocating lead screw.
[0019] By adopting the above technical solution, when the motor drives the first reciprocating lead screw to rotate, the moving block is driven to drive the pushing plate to reciprocate, facilitating the movement of the coarse material on the sieve plate into the receiving hoppers on both sides of the feeding box. Then, the coarse material is pre-crushed by the extrusion plate, the extrusion ring and the extrusion table, facilitating the ball mill body to crush the coarse material and reducing the adverse impact on the recovery rate.
[0020] Optionally, the driving member includes a worm gear installed on the second reciprocating lead screw, a corresponding worm is meshed on one side of the worm gear, and a first belt connecting the two is installed between the worm and the first reciprocating lead screw.
[0021] By adopting the above technical solution, when the motor drives the first reciprocating lead screw to rotate, the first belt drives the worm to rotate with the first reciprocating lead screw, and drives the worm gear to drive the second reciprocating lead screw to rotate and drive the extrusion table to reciprocate through the sliding rod. At this time, the gear rotates with the second reciprocating lead screw and drives the extrusion plate to rotate through the gear ring, further facilitating the extrusion of the coarse material, facilitating the ball mill body to crush the coarse material, and improving the working efficiency.
[0022] Optionally, a maintenance opening for replacing the sieve plate is provided on one side of the feed box. A sealing plate for blocking the maintenance opening is provided on the feed box. A plugging groove adapted to the sieve plate is provided on the inner side wall of the feed box. A connecting groove communicating with the plugging groove is provided on one side of the sealing plate close to the interior of the feed box. A spring facing the sieve plate is provided in the connecting groove. The sieve plate is plugged in the plugging groove, and the spring abuts against the side wall of the sieve plate.
[0023] By adopting the above technical solution, the sieve plate is plugged in the feed box through the plugging groove and limited by the sealing plate and the spring. When the sieve plate needs to be replaced, the sealing plate is removed and the sieve plate is pulled out, which is convenient for replacing the sieve plate and improves work efficiency.
[0024] Optionally, a driving rod with one end in contact with the sieve plate is plugged and slidably connected to the side of the feed box away from the sealing plate. The end of the driving rod away from the sieve plate abuts against a cam rotatably connected to the outer side wall of the feed box. A first bevel gear is fixedly connected to the upper side of the cam. A second bevel gear is engaged with one side of the first bevel gear. A second belt is installed between the second bevel gear and the first reciprocating lead screw.
[0025] By adopting the above technical solution, when the first reciprocating lead screw rotates, the second bevel gear is driven to rotate through the second belt. At this time, the first bevel gear drives the cam to rotate with the second bevel gear, so as to drive the driving rod to reciprocate through the cam, and thus cooperate with the spring to drive the sieve plate to vibrate, which is convenient for screening the coarse materials entering the feed box and improves work efficiency.
[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By preferably raising the grade of the raw material and through steps such as desliming and concentration, screening, etc., coarse materials and fine materials are formed. The coarse materials reach the required particle size after being ball-milled by a ball mill and are again subjected to steps such as desliming and concentration and screening, so that all the raw materials are formed into fine materials. And the fine materials are separated by a first-stage spiral chute, a second-stage spiral chute and a third-stage spiral chute, continuously removing impurities, while reducing tailing loss and improving the recovery rate. The process flow is reasonable, and the control of each step is more accurate and convenient, achieving the effect of reducing the tailing loss and reducing the adverse impact on the recovery rate; 2. By removing non-magnetic substances in the raw material through a high-gradient magnetic separator, the amount of raw material processed in the process is reduced, and at the same time, the possibility that the raw materials that have not been disintegrated and separated are discharged with impurities due to their relatively light weight during the separation by the first-stage spiral chute, the second-stage spiral chute and the third-stage spiral chute is reduced, thereby reducing the tailing loss and reducing the adverse impact on the recovery rate; 3. Coarse materials with large particle sizes enter the receiving hopper and move between the extrusion ring and the extrusion plate. The extrusion plate is driven to rotate by the rotating assembly. At this time, the extrusion teeth on the extrusion plate and the extrusion ring extrude the coarse materials until the particle size of the coarse materials can pass through the extrusion holes and move to the feeding box along the lower side of the receiving hopper, facilitating the ball mill body to crush the coarse materials, thereby reducing the tailing amount and minimizing the adverse impact on the recovery rate. Brief Description of the Drawings
[0027] Figure 1 is the flow chart of the titanium separation process in the embodiment of the present application.
[0028] Figure 2 is the overall structural schematic diagram of the ball mill in the embodiment of the present application.
[0029] Figure 3 is the structural schematic diagram showing the positional relationship between the ball mill body and the receiving hopper in the embodiment of the present application.
[0030] Figure 4 is the structural schematic diagram showing the positional relationship between the sieve plate and the feeding box in the embodiment of the present application.
[0031] Figure 5 is the structural schematic diagram showing the positional relationship between the crushing assembly and the feeding box in the embodiment of the present application.
[0032] Figure 6 is the structural schematic diagram showing the positional relationship between the driving rod and the feeding box in the embodiment of the present application.
[0033] Figure 7 is the structural schematic diagram showing the positional relationship between the rotating assembly and the feeding box in the embodiment of the present application.
[0034] Description of the Reference Numerals: 1. Ball mill body; 11. Mounting frame; 12. Connecting pipe; 2. Feeding box; 21. Sieve plate; 211. Pushing plate; 22. Inspection opening; 23. Sealing plate; 231. Connecting groove; 232. Spring; 24. Insertion slot; 25. Material distribution port; 26. Moving slot; 3. Receiving hopper; 31. Mounting pipe; 32. Rotating groove; 4. Driving assembly; 41. Moving block; 42. First reciprocating lead screw; 43. Motor; 44. Driving rod; 45. Cam; 46. Mounting rod; 47. First bevel gear; 48. Second bevel gear; 49. Second belt; 5. Crushing assembly; 51. Extrusion ring; 52. Extrusion teeth; 53. Extrusion plate; 531. Extrusion hole; 54. Extrusion table; 541. Extrusion groove; 55. Sliding rod; 56. Second reciprocating lead screw; 57. Fixed rod; 6. Rotating assembly; 61. Tooth ring; 62. Gear; 63. Driving member; 631. Worm gear; 632. Worm; 633. First belt. Detailed Description of the Embodiment
[0035] The following further describes the present application in detail with reference to the accompanying drawings.
[0036] The embodiments of the present application disclose a titanium separation process for ilmenite. Refer to Figure 1 , a titanium separation process for ilmenite includes the following steps: S1. Screening: The raw materials are screened by a cylindrical screen to form oversize and undersize materials, and the oversize materials are removed; S2. Iron removal: The undersize material formed in S1 is subjected to iron removal by a magnetic separator to remove iron powder, forming the undersize material after iron removal; S3. Optimization: After improving the grade of the undersize material after iron removal obtained in S2 by a high-gradient magnetic separator, magnetic substances, water and non-magnetic ore are formed. The water and non-magnetic ore are discharged into a sand dredger for sand washing, and after a dehydration process, building aggregates are formed; S4. The magnetic substances formed in S3 are subjected to de-sludging and concentration treatment through a concentration hopper to form concentrated materials. At this time, the concentration of the concentrated materials is suitable for ore dressing; S5. Re-screening: The concentrated materials obtained in S4 are screened by a classification cyclone to form coarse materials and fine materials. After the coarse materials are disintegrated by a ball mill, impurities and minerals are separated to form magnetic ore. Refer to Figure 2 and Figure 3 , the ball mill includes a horizontal ball mill body 1 and a mounting frame 11 installed on the lower side of the ball mill body 1. A connecting pipe 12 with one end blocked and communicating with the inside of the ball mill body 1 is rotatably connected to the feeding end of the ball mill body 1.
[0037] Refer to Figure 3 , Figure 4 and Figure 5 , a vertical feeding box 2 with an open upper end is fixedly connected and communicated with the upper side of the connecting pipe 12. The cross-section of the feeding box 2 in the horizontal direction is square, and a horizontal screen plate 21 is arranged in the feeding box 2. An inspection opening 22 is arranged on one side of the feeding box 2, and a plugging plate 23 for plugging the inspection opening 22 is arranged on the side of the feeding box 2 close to the inspection opening 22. The plugging plate 23 is installed on the feeding box 2 through bolts. Plugging grooves 24 communicating with each other are arranged on the other three inner side walls of the feeding box 2 except the side close to the plugging plate 23. A connecting groove 231 capable of communicating with the plugging grooves 24 is arranged on the side of the plugging plate 23 close to the plugging grooves 24. Two symmetrically arranged horizontal springs 232 fixedly connected to the plugging plate 23 are arranged in the plugging grooves 24. When the screen plate 21 is installed in the feeding box 2, the screen plate 21 is inserted into the plugging grooves 24, and the springs 232 abut against the side wall of the screen plate 21.
[0038] Vertical receiving hoppers 3 with a circular cross-section are fixedly connected to both sides outside the feeding box 2. Material distribution openings 25 corresponding to the receiving hoppers 3 and communicating with the corresponding receiving hoppers 3 are arranged on the side wall of the feeding box 2. The coarse materials on the screen plate 21 can enter the receiving hoppers 3 through the material distribution openings 25. Installation pipes 31 communicating with the inside of the lower end of the feeding box 2 are fixedly connected to the lower sides of the receiving hoppers 3.
[0039] Refer to Figure 4 and Figure 5 On the upper side of the sieve plate 21, a vertical push plate 211 is provided. The push plate 211 is perpendicular to the connection line between the two receiving hoppers 3. One end of the push plate 211 is in contact with the inner side wall of the feed box 2, and the other end is in contact with the side wall of the plugging plate 23. A driving component 4 for driving the movement of the push plate 211 is provided in the feed box 2, and a crushing component 5 for pre-crushing the coarse material is provided in each of the receiving hoppers 3.
[0040] The coarse material enters the feed box 2 and is screened by the sieve plate 21. Part of the coarse material with a small particle size passes through the sieve plate 21 and enters the ball mill body 1 through the connecting pipe 12 for ball milling. The raw material with a large particle size is retained on the sieve plate 21. The driving component 4 drives the push plate 211 to reciprocate along the direction of the connection line between the two receiving hoppers 3, so as to move the coarse material with a large particle size on the sieve plate 21 to the receiving hoppers 3 on both sides of the feed box 2 through the material distribution port 25. After being crushed by the crushing component 5 to reduce the particle size, it moves to the feed box 2 again through the installation pipe 31, which is convenient for the ball mill body 1 to crush the coarse material.
[0041] The sieve plate 21 is inserted into the feed box 2 through the insertion slot 24 and is limited by the plugging plate 23 and the spring 232. When the sieve plate 21 needs to be replaced, the plugging plate 23 is removed and the sieve plate 21 is pulled out, which is convenient for replacing the sieve plate 21.
[0042] Refer to Figure 3 、 Figure 4 and Figure 5 The driving component 4 includes a moving block 41 fixedly connected to one end of the push plate 211 away from the plugging plate 23. A moving groove 26 parallel to the connection line between the receiving hoppers 3 is formed on the side of the feed box 2 opposite to the plugging plate 23. The moving block 41 is inserted into the moving groove 26 and slides along the length direction of the moving groove 26. A first reciprocating lead screw 42 which is horizontal and threaded through the moving block 41 is provided in the moving groove 26. The ends of the first reciprocating lead screw 42 both pass through the side wall of the feed box 2 and are rotatably connected to the feed box 2, and a motor 43 fixedly connected to the outside of one of the receiving hoppers 3 is installed at one end of the first reciprocating lead screw 42.
[0043] Refer to Figure 3 and Figure 6, on the side of the feeding box 2 outside and away from the blocking plate 23, there is a horizontal driving rod 44. The end of the driving rod 44 passes through the side wall of the feeding box 2 and abuts against the sieve plate 21. At the end of the driving rod 44 away from the sieve plate 21, there is a horizontal cam 45. The side wall of the cam 45 is always in contact with the end of the driving rod 44, and on the upper side of the cam 45, there is a vertical mounting rod 46 fixedly connected to the center of the cam 45. The upper end of the mounting rod 46 is fixedly connected with a horizontal first bevel gear 47, and on the side of the first bevel gear 47 close to the first reciprocating lead screw 42, there is a vertical second bevel gear 48 meshing with it. A second belt 49 connecting the two is installed between the second bevel gear 48 and the first reciprocating lead screw 42.
[0044] The motor 43 drives the first reciprocating lead screw 42 to rotate, thereby driving the moving block 41 to drive the push plate 211 to reciprocate, facilitating the movement of the coarse materials on the sieve plate 21 to the receiving hoppers 3 on both sides of the feeding box 2, and then pre-crushing the coarse materials through the crushing assembly 5. When the first reciprocating lead screw 42 rotates, it drives the second bevel gear 48 to rotate through the second belt 49. At this time, the first bevel gear 47 drives the cam 45 to rotate with the second bevel gear 48, thereby driving the driving rod 44 to reciprocate through the cam 45, and then cooperating with the spring 232 to drive the sieve plate 21 to vibrate, facilitating the screening of the coarse materials entering the feeding box 2.
[0045] Refer to Figure 3 , Figure 5 and Figure 7 , the crushing assembly 5 includes an extrusion ring 51 fixedly connected to the inner side wall of the receiving hopper 3 and with a height lower than the upper side height of the sieve plate 21. The inner diameter of the upper end of the extrusion ring 51 gradually increases upward, and the inner diameter of the lower end of the extrusion ring 51 gradually increases downward. A plurality of evenly distributed extrusion teeth 52 are fixedly connected to the inner side wall of the extrusion ring 51. At the lower end inside the receiving hopper 3, there is an extrusion plate 53 that gradually protrudes upward from the edge to the center to form a tip. The upper end of the extrusion plate 53 passes through the extrusion ring 51 and is coaxial with the extrusion ring 51. A plurality of extrusion holes 531 are formed on the extrusion plate 53, and a plurality of extrusion teeth 52 are fixedly connected to the outer side wall of the extrusion plate 53. A rotating assembly 6 for driving the extrusion plate 53 to rotate is provided on the receiving hopper 3.
[0046] Refer to Figure 5 and Figure 7 , the rotating assembly 6 includes a gear ring 61 sleeved and fixedly connected to the outside of the lower end of the extrusion plate 53 and fixedly connected to the extrusion plate 53. Rotating grooves 32 adapted to the gear ring 61 are formed on the side walls of the receiving hopper 3. The gear ring 61 is inserted into the rotating grooves 32 and is rotatably connected to the receiving hopper 3. On one side of the receiving hopper 3 close to the motor 43, there is a horizontal gear 62 rotatably connected to the outer side wall of the receiving hopper 3. One side of the gear 62 is inserted into the receiving hopper 3 and meshes with the gear ring 61. A driving member 63 for driving the gear 62 to rotate is provided on the feeding box 2.
[0047] Coarse materials with large particle sizes enter the receiving hopper 3 and move between the extrusion ring 51 and the extrusion plate 53. The driving member 63 drives the gear 62 to drive the gear ring 61 to rotate. At this time, the extrusion plate 53 fixed to the gear ring 61 rotates with the gear ring 61. The extrusion teeth 52 on the extrusion plate 53 and the extrusion ring 51 extrude the coarse materials until the particle size of the coarse materials can pass through the extrusion holes 531 and move along the lower side of the receiving hopper 3 into the feeding box 2, facilitating the ball mill body 1 to crush the coarse materials.
[0048] At the upper end inside the receiving hopper 3, there is a frustum-shaped extrusion table 54 with a gradually decreasing diameter downward. In the middle of the lower side of the extrusion table 54, there is an extrusion groove 541 adapted to the upper end of the extrusion plate 53, and a plurality of extrusion teeth 52 are fixedly connected to the side wall of the lower side of the extrusion plate 53. At the axis of the upper side of the extrusion table 54, there is a vertical sliding rod 55 fixedly connected. The upper end of the sliding rod 55 passes through the side wall of the receiving hopper 3 and is slidably connected to the receiving hopper 3. The upper end of the sliding rod 55 bends towards the direction close to the motor 43, and the bent end of the sliding rod 55 passes through and is threadedly connected with a vertical second reciprocating lead screw 56. At the axis of the upper side of the gear 62, there is a vertical fixing rod 57 fixedly connected and fixedly connected to the second reciprocating lead screw 56.
[0049] Refer to Figure 3 and Figure 7 The driving member 63 includes a worm gear 631 fixedly connected to the second reciprocating lead screw 56. On the side of the worm gear 631 close to the first reciprocating lead screw 42, there is a worm 632 meshing with the worm gear 631 and parallel to the first reciprocating lead screw 42, and a first belt 633 connecting the two is installed between the worm 632 and the first reciprocating lead screw 42.
[0050] When the motor 43 drives the first reciprocating lead screw 42 to rotate, the first belt drives the worm 632 to rotate with the first reciprocating lead screw 42, and drives the worm gear 631 to drive the second reciprocating lead screw 56 to rotate and drive the extrusion table 54 to reciprocate through the sliding rod 55. At this time, the fixing rod 57 drives the gear 62 to rotate with the second reciprocating lead screw 56 and drives the extrusion plate 53 to rotate through the gear ring 61, so that the extrusion table 54 cooperates with the extrusion plate 53 and the extrusion ring 51, facilitating the extrusion of the coarse materials, reducing the particle size of the coarse materials, and facilitating the ball mill body 1 to crush the coarse materials; S6. Sorting: The fine materials obtained in S3 and the magnetic ore obtained in S5 enter the first-stage spiral chute, forming first-stage concentrate, first-stage middlings, first-stage tailings, water, and minerals with a light specific gravity. Among them, the water and minerals with a light specific gravity are discharged into the sand dredger for sand washing, and after the dehydration process, they form building aggregates. The first-stage middlings enter the second-stage spiral chute, thus forming second-stage concentrate, second-stage middlings, and second-stage tailings. The first-stage concentrate enters the third-stage spiral chute, forming third-stage concentrate, third-stage middlings, and third-stage tailings. The first-stage tailings and the second-stage tailings are secondarily optimized to form tailing concentrate and optimized tailings. The tailing concentrate returns to the first-stage spiral chute for re-election, and the optimized tailings enter the sand dredger and the dehydration screen to form building aggregates; The concentrate of the second stage enters the spiral chute of the third stage, and the middlings of the second stage return to the spiral chute of the second stage for re-selection; The concentrate of the third stage forms the finished product after being dehydrated by the demagnetization and dehydration equipment. The middlings of the third stage return to the spiral chute of the third stage for continuous re-selection, and the tailings of the third stage return to the spiral chute of the second stage for continuous re-selection until the raw material separation is completed.
[0051] The implementation principle of a titanium ore beneficiation process in an embodiment of the present application is as follows: iron powder in the raw material is removed by a ferromagnetic separator, and non-magnetic substances in the raw material are removed by a high-gradient magnetic separator, thereby reducing the amount of raw material processed in the process and also reducing the possibility that the raw material that has not been disintegrated and separated is discharged with impurities due to its relatively light weight during the separation in the spiral chute of the first stage, the spiral chute of the second stage, and the spiral chute of the third stage. Moreover, through steps such as desliming and thickening, screening, etc., coarse materials and fine materials are formed. The coarse materials are ball-milled by a ball mill to reach the required particle size, and then the steps of desliming and thickening, screening, etc. are carried out again, so that all the raw materials are formed into fine materials. And through the separation of the fine materials by the spiral chute of the first stage, the spiral chute of the second stage, and the spiral chute of the third stage, impurities are continuously removed, while reducing the tailing loss and increasing the recovery rate.
[0052] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A titanium separation process from ilmenite, characterized in that: It includes the following steps: S1. Screening: The raw materials are screened by a cylindrical screen to form oversize materials and undersize materials, and the oversize materials are removed; S2. Iron removal: The undersize materials formed in S1 are passed through a magnetic separator for iron removal to form the iron-removed undersize materials; S3. Optimization: After the grade of the iron-removed undersize materials obtained in S2 is improved, magnetic substances, water and non-magnetic ores are formed. The water and non-magnetic ores are discharged into a sand dredger for sand washing, and after a dehydration process, building aggregates are formed; S4. The magnetic substances formed in S3 are subjected to desliming and thickening treatment through a thickening hopper to form thickened materials. At this time, the concentration of the thickened materials is suitable for ore dressing; S5. Re-screening: The thickened materials obtained in S4 are screened by a classification cyclone to form coarse materials and fine materials. After the coarse materials are disintegrated by a ball mill, the impurities are separated from the minerals to form magnetic ores; S6. Separation: The fine materials obtained in S3 and the magnetic ores obtained in S5 enter a first-stage spiral chute to form first-stage concentrates, first-stage middlings, first-stage tailings, water and light-specific gravity minerals. The water and light-specific gravity minerals are discharged into a sand dredger for sand washing, and after a dehydration process, building aggregates are formed. The first-stage middlings enter a second-stage spiral chute to form second-stage concentrates, second-stage middlings and second-stage tailings. The first-stage concentrates enter a third-stage spiral chute to form third-stage concentrates, third-stage middlings and third-stage tailings. The first-stage tailings and the second-stage tailings are subjected to secondary optimization to form tailing concentrates and optimized tailings. The tailing concentrates are returned to the first-stage spiral chute for re-election, and the optimized tailings enter a sand dredger and a dehydration screen to form building aggregates; The second-stage concentrates enter the third-stage spiral chute, and the second-stage middlings are returned to the second-stage spiral chute for re-election; The third-stage concentrates are dehydrated by a demagnetization and dehydration device to form finished products. The third-stage middlings are returned to the third-stage spiral chute for continuous re-election, and the third-stage tailings are returned to the second-stage spiral chute for continuous re-election until the separation of the raw materials is completed.
2. The ilmenite titanium separation process according to claim 1, wherein: The method for improving the grade of the undersize materials in S3 is: improving the grade of the iron-removed undersize materials obtained in S2 through a high-gradient magnetic separator.
3. The ilmenite titanium separation process according to claim 1, characterized in that: The ball mill includes a ball mill body (1). A feed box (2) communicating with the inside of the ball mill body (1) is provided at the feed end of the ball mill body (1). A screen plate (21) is provided in the feed box (2). A push plate (211) sliding along the upper side of the stone plate is provided in the feed box (2). A driving assembly (4) for driving the push plate (211) to move is provided in the feed box (2). Receiving hoppers (3) communicating with the inside of the feed box (2) are provided on both sides of the feed box (2). A crushing assembly (5) is provided in the receiving hopper (3).
4. The ilmenite titanium separation process according to claim 3, characterized in that: The crushing component (5) includes a pressing ring (51) fixedly connected inside the receiving hopper (3) and lower than the upper side height of the sieve plate (21). The diameter of the pressing ring (51) gradually increases downward, and a plurality of pressing teeth (52) are fixedly connected to the inner side wall of the pressing ring (51). An extrusion plate (53) with an outer diameter gradually decreasing upward is provided in the pressing ring (51). The distance between the pressing ring (51) and the extrusion plate (53) gradually decreases downward. The extrusion plate (53) is rotatably connected to the receiving hopper (3). A plurality of extrusion holes (531) are formed in the extrusion plate (53), and a plurality of pressing teeth (52) are also fixedly connected to the outer side wall of the extrusion plate (53). A rotating component (6) for driving the extrusion plate (53) to rotate is provided on the receiving hopper (3).
5. A ilmenite titanium separation process according to claim 4, characterized in that: The rotating component (6) includes a gear ring (61) sleeved and fixedly connected to the lower end of the extrusion plate (53). The gear ring (61) is inserted into the side wall of the receiving hopper (3) and is rotatably connected to the receiving hopper (3). A gear (62) meshing with the gear ring (61) is rotatably connected to one side outside the receiving hopper (3). A driving member (63) for driving the gear (62) to rotate is provided on the feed box (2).
6. The ilmenite titanium separation process according to claim 5, characterized in that: An extrusion table (54) with a gradually decreasing diameter is provided in the receiving hopper (3) and above the extrusion plate (53). An extrusion groove (541) adapted to the upper side of the extrusion plate (53) is formed on the lower side of the extrusion table (54). A plurality of pressing teeth (52) are also fixedly connected to the side wall of the extrusion table (54). A sliding rod (55) fixedly connected to the upper side of the extrusion table (54) and passing through the receiving hopper (3) and slidably connected to the receiving hopper (3) is provided. The end of the sliding rod (55) bends in the direction close to the gear (62), and a second reciprocating lead screw (56) fixedly connected to the gear (62) is penetrated and threadedly connected to the bent end of the sliding rod (55).
7. The ilmenite titanium separation process according to claim 6, characterized in that: The driving component (4) includes a moving block (41) fixedly connected to one side of the baffle and inserted into the side wall of the feed box (2). A first reciprocating lead screw (42) arranged along the moving direction of the push plate (211) is penetrated and threadedly connected to the moving block (41). The ends of the first reciprocating lead screw (42) pass through the side wall of the feed box (2) and are rotatably connected to the feed box (2). A motor (43) is installed at one end of the first reciprocating lead screw (42).
8. A ilmenite titanium separation process according to claim 7, characterized in that: The driving member (63) includes a worm gear (631) installed on the second reciprocating lead screw (56). A corresponding worm (632) is meshed with one side of the worm gear (631). A first belt (633) connecting the two is installed between the worm (632) and the first reciprocating lead screw (42).
9. The ilmenite titanium separation process according to claim 8, characterized in that: One side of the feeding box (2) is provided with a maintenance opening (22) for replacing the sieve plate (21). The feeding box (2) is provided with a blocking plate (23) for blocking the maintenance opening (22). An insertion slot (24) adapted to the sieve plate (21) is formed on the inner side wall of the feeding box (2). A connecting slot (231) communicating with the insertion slot (24) is formed on one side of the blocking plate (23) close to the inside of the feeding box (2). A spring (232) facing the sieve plate (21) is arranged in the connecting slot (231). The sieve plate (21) is inserted into the insertion slot (24), and the spring (232) abuts against the side wall of the sieve plate (21).
10. A ilmenite titanium separation process according to claim 9, characterized in that: A driving rod (44) with one end in contact with the sieve plate (21) is inserted and slidably connected to one side of the feeding box (2) away from the blocking plate (23). One end of the driving rod (44) away from the sieve plate (21) abuts against a cam (45) rotatably connected to the outer side wall of the feeding box (2). A first bevel gear (47) is fixedly connected to the upper side of the cam (45). A second bevel gear (48) is meshed with one side of the first bevel gear (47). A second belt (49) is installed between the second bevel gear (48) and the first reciprocating lead screw (42).