Red mud magnetic separation process and turbulent electromagnetic segregation system

Abstract

The application discloses a kind of bauxite magnetic separation process and turbulent electromagnetic segregation system, comprising: make bauxite slurry occur projectile motion and be blocked after reflection into first magnetic field area, separate out first-order iron-containing crude ore;Make the bauxite slurry remaining after separating out first-order iron-containing crude ore occur projectile motion and be blocked after reflection into second magnetic field area, under the second magnetic field intensity, separate out first-order titanium-containing crude ore;Make the bauxite slurry remaining after separating out first-order titanium-containing crude ore occur projectile motion and be blocked after reflection into magnetic field, under the third magnetic field intensity, separate out first-order aluminum-containing crude ore and first-order tailings.The crude ore separation is realized by a kind of turbulent electromagnetic segregation system;The bauxite ore material entering the turbulent electromagnetic segregation system is projected to the corresponding magnetic field area, and the corresponding kind of ore material is separated out.By the process and segregation system, the highly separation of iron-containing ore, titanium-containing ore and aluminum-containing ore in bauxite is realized, and the comprehensive utilization value of bauxite and the recovery rate of various metals are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of comprehensive utilization of industrial waste residue and non-ferrous metals, and particularly relates to a red mud magnetic separation process and a turbulent electromagnetic separation system. BACKGROUND

[0002] Red mud is a tailing produced in the production process of aluminum industry, and has a complex mineral composition, mainly containing mineral substances such as Al2O3, Fe2O3, SiO2, etc., and usually presents strong alkalinity and corrosivity. Generally, 1.0-2.0 tons of red mud are produced along with 1 ton of aluminum oxide.

[0003] Red mud is rich in iron, aluminum, calcium, silicon, titanium, sodium, nickel, manganese, chromium, vanadium, and scandium, yttrium and lanthanide rare earth elements, and through comprehensive development and utilization, waste can be turned into treasure, and harm can be turned into benefit. Especially under the condition of the increasingly scarce mineral resources, the recovery of valuable metals in red mud is increasingly important. How to develop and utilize these red mud which has been sleeping for many years and has a large quantity, and truly realize the modern production of "no tail, no waste, no secondary pollution", and promote the comprehensive management of mine environment, is an important issue of common concern of China and countries around the world, so the development and utilization of red mud has very important practical significance.

[0004] The content of iron oxide in red mud is as high as 13%-22%, the content of titanium oxide is as high as 4-8%, even higher than that of some titanium ore, and the content of aluminum oxide is as high as 14-20%, all of which have significant extraction value. However, the existing technology only extracts fine iron powder according to the magnetic difference between ferrous metals and non-ferrous metals by using a magnetic separator. To realize the comprehensive management of red mud, the separation and extraction of non-ferrous metals such as titanium and aluminum in red mud cannot be ignored, and at the same time, the quality of the fine iron powder extracted by the magnetic separator is low, and its quality needs to be further improved. SUMMARY

[0005] To solve the above-mentioned problems in the prior art, the present application provides a red mud magnetic separation process and a turbulent electromagnetic separation system.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] A turbulent electromagnetic separation system is provided, characterized in that it comprises:

[0008] a feeding module having an upper end and a lower end;

[0009] a material blocking module;

[0010] a magnetic system module;

[0011] a transmission module;

[0012] a material flushing module with a water outlet;

[0013] a receiving module;

[0014] The receiving module comprises a target mineral receiving unit and a non-target mineral receiving unit;

[0015] The magnetic system module is located between the feeding module and the blocking module, and comprises a magnetic system unit and a rolling unit;

[0016] The rolling unit is a roller with an inner wall and an outer wall;

[0017] The magnetic system unit is located inside the rolling unit and is not connected to the rolling unit, so that the area outside the outer wall of the roller near the magnetic system unit has a magnetic field;

[0018] The transmission module is connected to the rolling unit to drive the rolling unit to rotate around the axis of the rolling unit;

[0019] The feeding module allows the mineral to enter from the upper end and flow out from the lower end;

[0020] The blocking module is located on the opposite side of the feeding module and can block the mineral flowing out from the lower end of the feeding module, so that the mineral is projected to the area outside the outer wall of the roller with a magnetic field, and the magnetic mineral is subjected to a magnetic force towards the outer wall of the roller;

[0021] The outer wall of the roller can attract the target mineral with a magnetic field and drive it to roll upwards; the non-target mineral receiving unit is located below the magnetic system module to receive the mineral not adsorbed to the outer surface of the roller;

[0022] The water outlet of the flushing module is located above the magnetic system module, and the water outlet can spray water flow to the outer wall of the roller to flush the mineral on the outer wall of the roller into the target mineral receiving unit.

[0023] Preferably, the magnetic field strength of the magnetic system unit can be adjusted.

[0024] Preferably, the magnetic system module has two or more magnetic system units, and the angle between the lower end of the feeding module and the horizontal plane can be adjusted.

[0025] Provided is a red mud magnetic separation process, characterized in that it comprises a first-stage rough mineral separation:

[0026] S1, after the red mud slurry is subjected to a reflection into a first magnetic field area after being blocked in a projectile motion, a first-stage iron-containing rough mineral is separated out under a first magnetic field strength;

[0027] S2, after the first-stage iron-containing rough mineral is separated out, the remaining red mud slurry is subjected to a reflection into a second magnetic field area after being blocked in a projectile motion, and a first-stage titanium-containing rough mineral is separated out under a second magnetic field strength;

[0028] S2, after the first-stage iron-containing rough mineral is separated out, the remaining red mud slurry is subjected to a reflection into a second magnetic field area after being blocked in a projectile motion, and a first-stage titanium-containing rough mineral is separated out under a second magnetic field strength;

[0029] S3, after the first-order titanium-containing rough ore is separated, the remaining red mud slurry is subjected to reflection into the magnetic field after being hindered from being subjected to the projectile motion, and the first-order aluminum-containing rough ore and the first-order tailings are separated at the third magnetic field strength.

[0030] Preferably, the first magnetic field strength is 500-800Gs, the second magnetic field strength is 5000-6000Gs, and the third magnetic field strength is 12000-14000Gs.

[0031] Preferably, the red mud magnetic separation process further comprises a second-order rough ore separation.

[0032] The first-order iron-containing rough ore is crushed by a first-stage grinding treatment.

[0033] The coarse ore particles and the fine ore particles in the crushed first-order iron-containing rough ore are screened by a classification treatment, the coarse ore particles are subjected to the first-stage grinding treatment again to obtain fine ore particles, and the fine ore particles are subjected to a second-order turbulent flow magnetic separation treatment to separate the second-order iron-containing rough ore and the second-order tailings A.

[0034] Preferably, the red mud magnetic separation process further comprises:

[0035] The first-order titanium-containing rough ore is crushed by a first-stage grinding treatment.

[0036] The coarse ore particles and the fine ore particles in the crushed first-order titanium-containing rough ore are screened by a classification treatment, the coarse ore particles are subjected to the first-stage grinding treatment again to obtain fine ore particles, and the fine ore particles are subjected to a second-order turbulent flow magnetic separation treatment to separate the second-order titanium-containing rough ore and the second-order tailings B.

[0037] Or / and the first-order aluminum-containing rough ore is crushed by a first-stage grinding treatment.

[0038] The coarse ore particles and the fine ore particles in the crushed first-order aluminum-containing rough ore are screened by a classification treatment, the coarse ore particles are subjected to the first-stage grinding treatment again to obtain fine ore particles, and the fine ore particles are subjected to a second-order turbulent flow magnetic separation treatment to separate the second-order aluminum-containing rough ore and the second-order tailings C.

[0039] Preferably, the second-order rough ore separation further comprises a first-stage concentration treatment.

[0040] The concentration of the first-order rough ore is improved by the first-stage concentration treatment, and the ore particles of the first-order rough ore are crushed by the first-stage grinding treatment.

[0041] Preferably, the red mud magnetic separation process further comprises a concentrate separation.

[0042] The concentrate separation comprises a second-stage grinding treatment and a magnetic separation treatment.

[0043] The second stage of the iron-containing coarse ore is crushed by the secondary grinding treatment;

[0044] Then, the crushed second stage of the iron-containing coarse ore is subjected to a third stage of the turbulent magnetic separation treatment to separate the iron-containing concentrate and the third stage of the tailings.

[0045] Preferably, the third stage of the tailings is subjected to the second stage of the turbulent magnetic separation treatment again.

[0046] Preferably, the magnetic field strength corresponding to the magnetic separation treatment of the crushed second stage of the iron-containing coarse ore is 400-500Gs.

[0047] Preferably, the concentrate separation further comprises a secondary concentration treatment.

[0048] The concentration of the second stage of the coarse ore is improved by the secondary concentration treatment, and then the particles of the second stage of the coarse ore are crushed by the secondary grinding treatment.

[0049] Preferably, the red mud magnetic separation process further comprises:

[0050] The iron-titanium mixed ore and the rare and precious metal-rich ore in the first stage of the tailings and the second stage of the tailings are separated by the gravity separation device; the second stage of the tailings comprises a second stage of the tailings A, a second stage of the tailings B, and a second stage of the tailings C.

[0051] Preferably, the red mud magnetic separation process further comprises:

[0052] The iron-titanium mixed ore and the rare and precious metal-rich ore in the iron-containing concentrate are separated by the gravity separation device.

[0053] Preferably, the red mud magnetic separation process further comprises:

[0054] The Ce concentrate and the fourth stage of the tailings in the rare and precious metal-rich ore are separated under a high-strength magnetic field.

[0055] The fourth stage of the tailings is an Nb and Th-rich material.

[0056] The beneficial effects of the present application are embodied in:

[0057] 1. The turbulent electromagnetic segregation system provided by the present application overcomes the problem that the upper ore particles generate pressure on the lower ore particles when the existing magnetic separator is used for ore dressing, so that the bottom ore particles are not easily attracted to the magnetic separator by the magnetic field, resulting in a low recovery rate of the target ore, and effectively improves the recovery rate of the target ore particles.

[0058] 2. The system reflects the ore slurry to the magnetic field area and contacts the outer wall of the drum, so that the magnetic force received by the ore slurry on the outer wall of the drum is the same, effectively improving the ore dressing accuracy.

[0059] 3、The system sets the adjustable angle between the feeding module and the horizontal plane, and sets multiple magnetic system units in the roller, when the type of mineral separation needs to be changed, only the angle between the feeding module and the horizontal plane is adjusted to make the mineral slurry be projected to the magnetic field area generated by the corresponding magnetic system. At the same time, the angle between the feeding module and the horizontal plane is adjusted, so that the speed of the mineral slurry flowing out of the feeding module is increased, so that the mineral separation speed is adjusted; and because the mineral slurry is accurately projected to the magnetic field area in a fixed range, after adjusting the angle between the feeding module and the horizontal plane, only the magnetic system corresponding to the magnetic area where the mineral slurry is reflected needs to be started, without the need to increase the range of the magnetic field area, so that the waste of electric power resources is avoided.

[0060] 4、The red mud magnetic separation process provided by the application uses a turbulent electromagnetic separation system to obtain high-grade iron-containing concentrate, aluminum-containing coarse ore, titanium-containing coarse ore and tailings, and then separates the iron-titanium mixed ore and rare and precious metal enrichment ore in the tailings through a shaking table and a high-strength magnetic separator, so that the red mud is highly comprehensively utilized. BRIEF DESCRIPTION OF DRAWINGS

[0061] Figure 1 It is a structure schematic view of a turbulent electromagnetic separation system after removing the roller;

[0062] Figure 2 It is a side view of a turbulent electromagnetic separation system;

[0063] Figure 3 It is a principle schematic view of a turbulent electromagnetic separation system changing the projection direction of the mineral slurry;

[0064] Figure 4 It is a top view of a turbulent electromagnetic separation system after removing the roller;

[0065] Figure 5 It is a flow schematic view of a red mud magnetic separation process;

[0066] Figure 6 It is a flow schematic view of a first-order coarse ore separation;

[0067] Figure 7 It is a flow schematic view of a second-order coarse ore separation;

[0068] Figure 8 It is a flow schematic view of a concentrate separation. DETAILED DESCRIPTION

[0069] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0070] Referring to Figures 1-7 The specific embodiments provided by the present application are as follows:

[0071] Embodiment 1

[0072] A turbulent electromagnetic separation system, characterized in that it comprises:

[0073] a feeding module (1) having an upper end (101) and a lower end (102);

[0074] a blocking module (2);

[0075] a magnetic system module (3);

[0076] a transmission module (4);

[0077] a flushing module (5) having a water outlet (501);

[0078] a receiving module;

[0079] The receiving module comprises a target mineral receiving unit (601) and a non-target mineral receiving unit (602);

[0080] The magnetic system module (3) is located between the feeding module (1) and the blocking module (2), and the magnetic system module (3) comprises a magnetic system unit (301) and a rolling unit (302);

[0081] The rolling unit (302) is a roller having an inner wall (3021) and an outer wall (3022);

[0082] The magnetic system unit (301) is located inside the cylindrical roller and is not connected to the rolling unit (302), so that the area outside the outer wall (3022) of the roller near the magnetic system unit (301) has a magnetic field;

[0083] The transmission module (4) can drive the rolling unit (302) to rotate around the axis of the rolling unit (302);

[0084] The feeding module (1) can make the mineral material enter from the upper end (101) and flow out from the lower end (102);

[0085] The blocking module (2) is located on the opposite side of the feeding module (1), and can block the mineral material flowing out from the lower end (102) of the feeding module (1), so that the mineral material is projected to the area outside the outer wall (3022) of the roller which has a magnetic field, and the magnetic mineral material is subjected to a magnetic force towards the outer wall (3022) of the roller;

[0086] The drum outer wall (3022) can attract the target mineral material with magnetism through the magnetic field, and drive it to roll upward; the non-target mineral material receiving unit (602) is located below the magnetic system module (3), and is used for receiving the mineral material not adsorbed to the outer surface of the drum;

[0087] The water outlet (501) of the flushing module (5) is located above the magnetic system module (3), and the water outlet (501) can spray water flow to the drum outer wall (3022), and flush the mineral material on the drum outer wall (3022) into the target mineral material receiving unit (601).

[0088] Considering that the working principle of the existing magnetic separator is that the mineral material flows below the magnetic system module, and the magnetic system module adsorbs the magnetic or magnetizable mineral particles in the mineral material on the cylinder. However, in the adsorption process, the mineral particles in the mineral material are not arranged in a single layer, and the bottom layer of mineral particles not only has to overcome the gravity of the mineral particles themselves, but also has to overcome the pressure generated by the upper layer of mineral particles on them, so that the mineral particles close to the bottom layer are not easy to be attracted by the magnetic field, resulting in low recovery rate of the mineral particles. If the bottom layer of mineral material is to be attracted, the magnetic field strength needs to be further increased, but the increase of the magnetic field strength will lead to the attraction of the weak magnetic non-target mineral in the upper layer, resulting in low precision of the recovered mineral particles.

[0089] Referring to FIGS. 1, 2, Figure 2 Figure 4 In the turbulent electromagnetic separation system provided in the embodiment, the mineral slurry falls and hits the blocking module after passing through the feeding module, and is reflected to the magnetic system module. In the magnetic field area generated by the magnetic system module, the reflected strong magnetic target mineral particles only need to overcome their own gravity to be adsorbed on the part of the drum outer wall close to the magnetic system unit, and roll with the drum to a certain height and then separate from the magnetic field area, and are flushed into the target mineral material receiving unit by the flushing module, while the non-target mineral particles without magnetism and weak magnetism fall into the non-target mineral material receiving unit due to their own gravity.

[0090] ​Therefore, the turbulent electromagnetic separation system provided by the embodiment overcomes the problem that in the existing magnetic separator, the upper layer of ore particles exerts pressure on the lower layer of ore particles, so that the ore particles in the bottom layer are not easily attracted to the magnetic separator by the magnetic field, resulting in a low recovery rate of target ore, and effectively improves the recovery rate of target ore particles; meanwhile, in the existing magnetic separator, the distance between the ore particles in the bottom layer and the top layer and the magnetic system generating the magnetic field is different when the ore flows through the magnetic separator, which causes the ore particles in different layers to be subjected to different magnetic forces, and in the embodiment, the ore slurry is reflected to the magnetic field area and contacts the outer wall of the drum, so that the ore slurry is subjected to the same magnetic force when it is on the outer wall of the drum, which significantly improves the ore dressing accuracy, and in the embodiment, after the ore slurry flows out of the feeding module, it is reflected by the blocking module and contacts the outer wall of the drum, so that the ore slurry is subjected to gravity during the reflection process to reduce the flow rate, and the ore slurry contacts the outer wall of the drum at a small speed, which avoids the situation that the ore slurry flows down from a high place to impact the drum at a large speed, causing the ore slurry to rebound and reflect out of the magnetic field area, resulting in a decrease in the recovery rate of target ore.

[0091] Moreover, the reflection area can reflect the movement direction of the high-speed moving material to the vertical direction, and slow down the high-speed moving and dispersed material by the action of gravity, so as to reduce the impact on the material in the magnetic force area. Tests show that the adjustment of the impact speed of the material has a greater impact on the purity of the material after magnetic separation, that is, the purity of the material is greatly affected by the impact speed of the feeding. Due to the superiority (high sensitivity) of the scheme in adjusting the impact angle and speed, it is possible to select materials such as titanium which are not sensitive to the magnetic field by adjusting the magnetic field strength.

[0092] Embodiment 2

[0093] In the embodiment, as a further improvement of the technical scheme of embodiment 1, it is characterized in that,

[0094] The magnetic field strength of the magnetic system unit (301) can be adjusted;

[0095] The magnetic system unit (301) of the magnetic system module (3) is 2 or more, and the angle between the lower end (102) of the feeding module and the horizontal plane can be adjusted.

[0096] Referring to Figure 3 In the embodiment, the angle between the feeding module and the horizontal plane can be adjusted, and a plurality of magnetic system units are arranged in the drum. When it is necessary to change the type of ore dressing, the angle between the lower end of the feeding module and the horizontal plane can be adjusted to reflect the ore slurry to the magnetic field area generated by the corresponding magnetic system.

[0097] Meanwhile, considering that when the speed of the ore pulp flowing into the system is too large, the ore pulp reflected to the roller will splash everywhere, the turbulent electromagnetic separation system provided in the embodiment can reduce the speed of the ore pulp flowing out of the feeding module by adjusting the angle between the lower end of the feeding module and the horizontal plane, that is, by reducing the inclination angle of the lower end of the feeding module, so as to prevent the ore pulp from splashing everywhere when the ore pulp reflected to the outer wall of the roller is too large.

[0098] Embodiment 3

[0099] The red mud magnetic separation process is characterized in that it comprises a first-stage rough ore separation: S1,

[0100] The red mud ore pulp is reflected into the first magnetic field area after being hindered from the projectile motion, and the first-stage iron-containing rough ore is separated under the first magnetic field strength.

[0101] The first-stage iron-containing rough ore is separated under the first magnetic field strength.

[0102] S2, the red mud ore pulp remaining after the first-stage iron-containing rough ore is separated is reflected into the second magnetic field area after being hindered from the projectile motion, and the first-stage titanium-containing rough ore is separated under the second magnetic field strength.

[0103] S3, the red mud ore pulp remaining after the first-stage titanium-containing rough ore is separated is reflected into the magnetic field after being hindered from the projectile motion, and the first-stage aluminum-containing rough ore and the first-stage tailings are separated under the third magnetic field strength.

[0104] The content of iron oxide in the red mud is as high as 13% to 22%, the content of titanium oxide is as high as 4% to 8%, even higher than that of some titanium ores, and the content of aluminum oxide is as high as 14% to 20%, all of which have significant extraction value. However, the prior art only extracts fine iron powder according to the magnetic difference between ferrous metals and non-ferrous metals by using a magnetic separator. To achieve comprehensive treatment of red mud, the separation and extraction of non-ferrous metals such as titanium and aluminum in the red mud cannot be ignored. At present, the grade of the fine iron powder extracted by the magnetic separator is low, and its quality needs to be further improved.

[0105] Referring to Figure 6 In the red mud magnetic separation process provided in the embodiment, the red mud ore pulp to be separated mainly contains magnetite, aluminum oxide, titanium dioxide and rare and precious metals. The red mud ore pulp is reflected into the first magnetic field area, the second magnetic field area and the third magnetic field area after being hindered from the projectile motion by using the turbulent electromagnetic separation system, and the first-stage iron-containing rough ore, the first-stage aluminum-containing rough ore, the first-stage titanium-containing rough ore and the first-stage tailings are obtained. Because the ore pulp is reflected to the magnetic field area, the distance between the ore pulp and the magnetic system generating the magnetic field is equal, and the magnetic force received is the same, the beneficiation precision is significantly improved, and high-precision separation of magnetite, aluminum oxide and titanium dioxide in the red mud is achieved.

[0106] Embodiment 4

[0107] In this embodiment, as a further improvement of the technical scheme of embodiment 3, it is characterized in that,

[0108] The first magnetic field strength is 500-800Gs, the second magnetic field strength is 5000-6000Gs, and the third magnetic field strength is 12000-14000Gs.

[0109] In this embodiment, the strong magnetic iron-containing coarse ore is separated by controlling the magnetic field strength to be 500-800Gs (Gauss), then the titanium-containing coarse ore is separated by controlling the magnetic field strength to be 5000-6000Gs, and then the aluminum-containing coarse ore is separated by controlling the magnetic field strength to be 12000-14000Gs.

[0110] Embodiment 5

[0111] In this embodiment, as a further improvement of the technical scheme of embodiment 4, it is characterized in that,

[0112] Further comprising a second-order coarse ore separation:

[0113] The first-order iron-containing coarse ore is crushed by a first-order grinding treatment;

[0114] The coarse ore particles and fine ore particles in the crushed first-order iron-containing coarse ore are screened by a classification treatment; the coarse ore particles are subjected to the first-order grinding treatment again to obtain fine ore particles, and the fine ore particles are subjected to a second-order turbulent magnetic separation treatment to separate second-order iron-containing coarse ore and second-order tailings A.

[0115] Preferably, further comprising:

[0116] The first-order titanium-containing coarse ore is crushed by a first-order grinding treatment;

[0117] The coarse ore particles and fine ore particles in the crushed first-order titanium-containing coarse ore are screened by a classification treatment; the coarse ore particles are subjected to the first-order grinding treatment again to obtain fine ore particles, and the fine ore particles are subjected to a second-order turbulent magnetic separation treatment to separate second-order titanium-containing coarse ore and second-order tailings B.

[0118] Or / and the first-order aluminum-containing coarse ore is crushed by a first-order grinding treatment;

[0119] The coarse ore particles and fine ore particles in the crushed first-order aluminum-containing coarse ore are screened by a classification treatment; the coarse ore particles are subjected to the first-order grinding treatment again to obtain fine ore particles, and the fine ore particles are subjected to a second-order turbulent magnetic separation treatment to separate second-order aluminum-containing coarse ore and second-order tailings C.

[0120] Considering that the first-order iron-containing coarse ore, the first-order aluminum-containing coarse ore, and the first-order titanium-containing coarse ore obtained after the first-order turbulent magnetic separation treatment of the red mud slurry in embodiments 3-4 have large particle sizes and low grades, they can only be used for the manufacture of materials with low requirements on ore quality.

[0121] Therefore, referring to Figure 7 , the embodiment carries out second-order rough ore separation on first-order rough ore. The mineral particles are treated by first-order grinding to reach more than 200 mesh, waste is separated from the first-order ore, and the mineral particles meet the particle size requirements of the second-order turbulent magnetic separation treatment. The second-order turbulent magnetic separation treatment is carried out to further improve the grade of the target ore and expand the use of the ore. According to the actual market demand, the embodiment can carry out second-order rough ore separation on the first-order iron-containing rough ore to obtain second-order iron-containing rough ore with an iron content of 55-60%. The first-order aluminum-containing rough ore or the first-order titanium-containing rough ore can also be subjected to second-order rough ore separation to obtain second-order aluminum-containing rough ore or second-order titanium-containing rough ore with higher grade.

[0122] Preferably, the second-order rough ore separation further includes first-order concentration treatment.

[0123] The concentration of the first-order rough ore is improved by the first-order concentration treatment, and the mineral particles of the first-order rough ore are crushed by the first-order grinding treatment.

[0124] Considering that the ore will be mixed with the water discharged from the flushing module during the first-order turbulent magnetic separation, the ore slurry is formed again, and the concentration of the ore is low. If the second-order rough ore separation is directly carried out, a large amount of time will be consumed.

[0125] The ore slurry of the first-order rough ore obtained is subjected to first-order concentration treatment to improve the concentration of the first-order rough ore slurry, and then the second-order rough ore separation is carried out, which further reduces the processing time and reduces energy consumption.

[0126] Embodiment 6

[0127] In the embodiment, as a further improvement of the technical scheme of embodiment 5, it is characterized in that,

[0128] Further including concentrate separation;

[0129] The concentrate separation includes second-order grinding treatment and magnetic separation treatment.

[0130] The mineral particles of the second-order iron-containing rough ore are crushed by the second-order grinding treatment.

[0131] Then, the crushed second-order iron-containing rough ore is subjected to magnetic separation treatment to separate iron-containing concentrate and third-order tailings.

[0132] The concentrate separation further includes second-order concentration treatment.

[0133] The concentration of the second-order rough ore is improved by the second-order concentration treatment, and the mineral particles of the second-order rough ore are crushed by the second-order grinding treatment.

[0134] When the crushed second-order iron-containing rough ore is subjected to magnetic separation treatment, the corresponding magnetic field strength is 400-500 Gs.

[0135] Referring to Figure 7 In the embodiment, the second-order iron-containing coarse ore separated by the second turbulent electromagnetic separator is sent into the second high-pressure cyclone separator to improve the mass concentration of the second-order coarse ore, and then the second-order coarse ore is sent into the second ball mill for grinding. The particle size of the iron-containing coarse ore after ball grinding is 300 mesh. The iron-containing concentrate with strong magnetism and the tailings with weak magnetism are separated from the iron-containing coarse ore by the magnetic separator according to the magnetism. The content of iron in the iron-containing concentrate after magnetic separation by the magnetic separator reaches more than 65%, meeting the higher grade requirement of the user on the separated iron-containing concentrate and widening the use of the iron-containing concentrate.

[0136] Embodiment 7

[0137] In the embodiment, as a further improvement of the technical scheme of embodiment 6, the second-order turbulent magnetic separation processing is further improved, and the second-order turbulent magnetic separation processing is further improved.

[0138] Further comprising:

[0139] The third-order tailings are subjected to the second-order turbulent magnetic separation processing again.

[0140] Considering that the third-order tailings still contain iron-containing ore that has not been separated, the embodiment subjects the weak-magnetic iron-containing tailings and the first-order iron-containing coarse ore to the second-order turbulent magnetic separation processing, further improving the recovery rate of the iron-containing ore.

[0141] Embodiment 8

[0142] In the embodiment, as a further improvement of the technical scheme of embodiment 7, the second-order turbulent magnetic separation processing is further improved, and the second-order turbulent magnetic separation processing is further improved.

[0143] Further comprising:

[0144] The iron-titanium mixed ore and the rare and precious metal-rich ore in the first-order tailings and the second-order tailings are separated by the gravity separation equipment; the second-order tailings include second-order tailings A, second-order tailings B, and second-order tailings C.

[0145] Considering that the first-order tailings and the second-order tailings after magnetic separation still contain metal ore that has not been separated, the embodiment separates the iron-titanium mixed ore and the rare and precious metal-rich ore in the first-order tailings and the second-order tailings by the gravity separation equipment (the gravity separation equipment used in the embodiment is a shaking table), improving the comprehensive utilization rate of the red mud.

[0146] Embodiment 9

[0147] In the embodiment, as a further improvement of the technical scheme of embodiment 7, the second-order turbulent magnetic separation processing is further improved, and the second-order turbulent magnetic separation processing is further improved.

[0148] Further comprising:

[0149] The Ce concentrate and the fourth-order tailings in the rare and precious metal-rich ore are separated under high-strength magnetism.

[0150] The fourth-order tailings are Nb and Th enrichments.

[0151] In view of the fact that the rare and precious metal enrichment separated by the gravity separation device mainly comprises the Ce concentrate and the Nb and Th enrichments, and the Ce concentrate can be separated by high-intensity magnetic separation, the Ce concentrate in the rare and precious metal enrichment is separated under high-intensity magnetic separation in the embodiment, and the tailings are the Nb and Th enrichments, so that the separation of the Ce concentrate and the Nb and Th enrichment is realized, and the comprehensive utilization rate of the red mud is further improved.

[0152] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "straight", "horizontal", "center", "top", "bottom", "top", "bottom", "inner", "outer", "inner side", "outer side" and the like indicate the orientation or positional relationship.

[0153] In the description of the embodiments of the present application, it should be noted that unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "assembling" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0154] In the description of the embodiments of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0155] In the description of the embodiments of the present application, it should be understood that "-" and "~" represent the range of the same of two numerical values, and the range includes the end points. For example: "A-B" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0156] In the description of the embodiments of the present application, the term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " herein generally represents that the front and rear associated objects are in an "or" relationship.

[0157] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A turbulent electromagnetic fractionation system characterized by, Comprise: a feeding module with upper end and lower end; a blocking module; a magnetic system module; a transmission module; a flushing module with water outlet; a receiving module; the receiving module comprises target mineral receiving unit and non-target mineral receiving unit; the magnetic system module is located between the feeding module and the blocking module, the magnetic system module comprises magnetic system unit and rolling unit; the rolling unit is a roller with inner wall and outer wall; the magnetic system unit is located inside the rolling unit and is not connected with the rolling unit, so that the area outside the outer wall of the roller near the magnetic system unit has a magnetic field; the transmission module is connected with the rolling unit and can drive the rolling unit to rotate around the axis of the rolling unit; the blocking module is located on the opposite side of the feeding module, which can block the mineral from flowing out of the lower end of the feeding module, so that the mineral is thrown to the area outside the outer wall of the roller which has a magnetic field; the non-target mineral receiving unit is located below the magnetic system module, which is used to receive the mineral that is not adsorbed to the outer surface of the roller; the flushing module water outlet is located above the magnetic system module, the water outlet can spray water to the outer wall of the roller, and the mineral on the outer wall of the roller is flushed into the target mineral receiving unit; and the angle between the lower end of the feeding module and the horizontal plane can be adjusted.

2. The turbulent electromagnetic separation system according to claim 1, wherein the magnetic field strength of the magnetic system unit can be adjusted.

3. The turbulent electromagnetic separation system according to claim 2, wherein the magnetic system unit of the magnetic system module is two or more. The operation of the turbulent electromagnetic separation system according to any one of claims 1-3 comprises first-stage rough ore separation: S1, after the red mud slurry is blocked from the throwing motion and reflects into the first magnetic field area, the first-stage iron-containing rough ore is separated under the first magnetic field strength; S2, after the first-stage iron-containing rough ore is separated, the remaining red mud slurry is blocked from the throwing motion and reflects into the second magnetic field area, the first-stage titanium-containing rough ore is separated under the second magnetic field strength; S3, after the first-stage titanium-containing rough ore is separated, the remaining red mud slurry is blocked from the throwing motion and reflects into the magnetic field, the first-stage aluminum-containing rough ore and the first-stage tailings are separated under the third magnetic field strength. The first magnetic field strength is 500-800Gs, the second magnetic field strength is 5000-6000Gs, and the third magnetic field strength is 12000-14000Gs.

4. A process for the magnetic separation of red mud characterised in that, It also includes second-stage rough ore separation: The first-stage iron-containing rough ore is crushed by primary grinding treatment; The coarse ore particles and fine ore particles in the crushed first-stage iron-containing rough ore are screened by classification treatment; the coarse ore particles are reprocessed by the primary grinding treatment to obtain fine ore particles, and the fine ore particles are processed by second-stage turbulent magnetic separation to separate the second-stage iron-containing rough ore and the second-stage tailings A.

5. A process for the magnetic separation of red mud according to claim 4, characterised in that, It also includes:

6. A process for the magnetic separation of red mud according to claim 5, characterised in that, The first-stage titanium-containing rough ore is crushed by primary grinding treatment; The coarse ore particles and fine ore particles in the crushed first-stage titanium-containing rough ore are screened by classification treatment; the coarse ore particles are reprocessed by the primary grinding treatment to obtain fine ore particles, and the fine ore particles are processed by second-stage turbulent magnetic separation to separate the second-stage titanium-containing rough ore and the second-stage tailings B; Or / and the first-stage aluminum-containing rough ore is crushed by primary grinding treatment; 7. A process for the magnetic separation of red mud according to claim 6, characterised in that, ​ ​ ​ ​ The coarse ore particles and fine ore particles in the first-order aluminum-containing coarse ore after crushing are screened through a classification process; the coarse ore particles are subjected to the first-order grinding process again to obtain fine ore particles, and the fine ore particles are subjected to a second-order turbulent magnetic separation process to separate second-order aluminum-containing coarse ore and second-order tailings C.

8. The red mud magnetic separation process according to claim 6 or 7, characterized in that, The second-order coarse ore separation further comprises a first-order concentration process; The concentration of the first-order coarse ore is improved through the first-order concentration process, and the ore particles of the first-order coarse ore are crushed through the first-order grinding process.

9. A process for the magnetic separation of red mud according to claim 8, characterised in that, Further comprising a concentrate separation: The ore particles of the second-order iron-containing coarse ore are crushed through a second-order grinding process; Then, the crushed second-order iron-containing coarse ore is subjected to a third-order turbulent magnetic separation process to separate iron-containing concentrate and third-order tailings.

10. A process for the magnetic separation of red mud according to claim 9, characterised in that, Further comprising: The third-order tailings are subjected to the second-order turbulent magnetic separation process again.

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