Linear magnetic agglomeration column type separation equipment for magnetite
Through magnetite linear magnetic agglomeration column sorting equipment, the cyclone flow and magnetic field effect are used to solve the problems of large water consumption and low sorting efficiency in traditional magnetite ore dressing, and high-efficiency magnetite separation is achieved.
Patent Information
- Application Number
- CN202422257693.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-14
AI Technical Summary
There are problems in traditional magnetite ore dressing, such as large water consumption, low sorting efficiency and low accuracy, especially the magnetic agglomeration phenomenon causes magnetite particles to be mixed with gangue particles, affecting the quality of iron concentrate.
Magnetite linear magnetic agglomeration column sorting equipment is used to utilize the cylindrical screen and electromagnetic coil in the vertical cylindrical cylinder to achieve efficient sorting of magnetite through cyclonic motion and magnetic field action, reducing water consumption.
It realizes efficient sorting of magnetite, reduces water consumption, and improves the sorting accuracy and the quality of iron concentrate.
Smart Images
Figure CN223171065U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a linear magnetic agglomeration column type separation device for magnetite ore. Background Art
[0002] Traditional magnetite ore dressing mainly uses the weak magnetic separation method, and the equipment is a wet drum weak magnetic separator. The magnetic agglomeration gravity separation proposed in the 1980s is a separation process and method that subverts the separation principle of traditional weak magnetic separation process equipment, including the traditional magnetic agglomeration gravity separation method and the magnetic field screening method, and is mainly used for the beneficiation process of magnetite ore.
[0003] In the weak magnetic separation process, magnetic agglomeration will occur. The magnetic properties of magnetite particles are superimposed to form magnetic aggregates, which are prone to entrain gangue particles or magnetite rich intergrowths, resulting in low separation efficiency and separation accuracy of magnetite ore, and relatively poor quality of iron concentrate.
[0004] The beneficiation equipment such as the magnetic agglomeration gravity separation method has disadvantages such as a large amount of water consumption. Content of the Utility Model
[0005] The technical problem to be solved by the utility model is: aiming at the problems of large water consumption and low precision existing in the existing magnetic agglomeration gravity separation method, to provide a linear magnetic agglomeration column type separation device for magnetite ore.
[0006] The technical solution of the utility model is specifically as follows:
[0007] A linear magnetic agglomeration column type separation device for magnetite ore, including a vertical cylindrical barrel, a cylindrical screen is arranged inside the vertical cylindrical barrel, at least one circle of electromagnetic coils is arranged outside the cylindrical screen, and the electromagnetic coils are distributed along the axial direction of the cylindrical screen; a ring-shaped feeding hopper is arranged at the top of the vertical cylindrical barrel; a water replenishing port is arranged at the lower part of the vertical cylindrical barrel, and the water replenishing port is located in the tangential direction of the vertical cylindrical barrel;
[0008] At least one medium / tailings outlet is arranged at the bottom of the vertical cylindrical barrel, and the area between the outside of the cylindrical screen and the inner wall of the vertical cylindrical barrel is the medium / tailings collection area, and the medium / tailings outlet is located at the bottom of the medium / tailings collection area;
[0009] A concentrate collection area is arranged at the bottom of the vertical cylindrical barrel, the concentrate collection area is located below the cylindrical screen, and a concentrate outlet is arranged at the bottom of the concentrate collection area.
[0010] The cylindrical screen includes a plurality of longitudinally arranged strip-shaped screens, the strip-shaped screens enclose a cylindrical shape, and a plurality of annular screens are arranged on the strip-shaped screens, and the annular screens are arranged in a top-down manner.
[0011] The distance between adjacent annular screens is 1 - 5 mm.
[0012] A plurality of groups of co-directional DC electromagnetic coils are arranged on the radially outer surface of the annular screen, and the electromagnetic coils are regularly arranged at intervals up and down.
[0013] The annular feed hopper includes a hopper body, a cone is arranged in the hopper body, and the cone is fixed to the hopper body through an auxiliary support frame.
[0014] The beneficial effects of the present utility model are as follows: Different from conventional magnetic separation columns and magnetic field screening methods, the present utility model can achieve efficient separation of magnetite. Moreover, the water consumption only needs to ensure the swirling motion, and the water consumption is not large. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is the overall structure diagram of the present utility model;
[0016] Figure 2 is the top view of the present utility model;
[0017] Figure 3 is a schematic diagram of the principle of Ampere's rule;
[0018] Figure 4 is a schematic diagram of a plate-shaped permanent magnet magnetic system. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0021] As Figure 1 shown in FIG. -2, a linear magnetic agglomeration column type separation device for magnetite includes a vertical cylindrical barrel 1, a cylindrical screen 2 is arranged inside the vertical cylindrical barrel 1, at least one turn of electromagnetic coils 3 is arranged outside the cylindrical screen 2, and the electromagnetic coils 3 are distributed along the axial direction of the cylindrical screen 2; an annular feed hopper 4 is arranged at the top of the vertical cylindrical barrel 1; a water replenishing port 5 is arranged at the lower part of the vertical cylindrical barrel 1, and the water replenishing port 5 is located in the tangential direction of the vertical cylindrical barrel 1.
[0022] At least one medium / tailings outlet 6 is provided at the bottom of the vertical cylindrical barrel 1. It should be noted that the area between the outer side of the cylindrical screen 2 and the inner wall of the vertical cylindrical barrel 1 is the medium / tailings collection area 9, and the medium / tailings outlet 6 is located at the bottom of the medium / tailings collection area 9.
[0023] A concentrate collection area 7 is provided at the bottom of the vertical cylindrical barrel 1. The concentrate collection area 7 is located below the cylindrical screen 2. The concentrate collection area 7 is in an inverted conical shape, and a concentrate outlet 8 is provided at the bottom of the concentrate collection area 7. Thus, the concentrate outlet 8 is located at the central position, while the medium / tailings outlet 6 is located in the outer ring area of the concentrate outlet 8.
[0024] Furthermore, the cylindrical screen 2 includes a plurality of longitudinally arranged strip-shaped screens 21, and the strip-shaped screens 21 enclose a cylindrical shape. A plurality of annular screens 22 are provided on the strip-shaped screens 21. The annular screens 22 are distributed from top to bottom. The distance between adjacent annular screens 22 is 1 - 5 mm. The distances between the annular screens 22 are regularly arranged in parallel and perpendicular to the axial direction of the cylinder. The bottom of the annular screen 22 is provided with the concentrate collection area 7.
[0025] Furthermore, a plurality of groups of co-directional direct current electromagnetic coils 3 are provided on the radially outer surface of the annular screen 22. The electromagnetic coils 3 are regularly arranged at intervals up and down; a ring-shaped feeding hopper 4 is provided at the upper end of the annular screen 22 and within the radial direction of the annular screen 22.
[0026] Furthermore, the ring-shaped feeding hopper 4 includes a hopper body 41, and a cone 42 is provided in the hopper body 41. The cone 42 is fixed to the hopper body 41 through an auxiliary support frame.
[0027] The working steps of the present utility model are as follows:
[0028] Step 1: Water is injected into the vertical cylindrical barrel 1 through the water replenishing port 5. The entire water body undergoes a swirling motion under the tangential hydraulic action. By adjusting each outlet, the vertical cylindrical barrel 1 is kept in a full water and swirling state.
[0029] Step 2: The electromagnetic coil 3 is energized with direct current, and the current is preferably such that a stable linear magnetic agglomeration of magnetite is formed.
[0030] Step 3: The magnetite slurry to be sorted is fed through the ring-shaped feeding hopper 4, and the slurry material is fed in a ring shape to the radially inner side of the annular screen 22.
[0031] Step 4: As the pulp material drops, the strongly magnetic magnetite minerals form a magnetic field environment under the action of the energized electromagnetic coil 3. According to the principle of Ampere's rule, a vertical linear magnetic agglomerate is formed. The agglomerate is blocked by the strip screen 21 arranged perpendicular to it and remains inside the radial direction of the annular screen 22. Under the action of gravity and micro-vortex force, it rotates and sinks into the concentrate collection area 7, and finally is discharged from the vertical cylindrical body 1 through the concentrate outlet 8. For other gangue minerals or lean associated minerals, since they cannot agglomerate, they pass through the screen under the action of swirling centrifugal force and perform swirling motion in the middle / tailings collection area 9. Finally, under the action of gravity, they sink and are discharged from the vertical cylindrical body 1 through the middle / tailings outlet 6.
[0032] This method is different from the conventional magnetic separation column and magnetic field screening method, and can achieve efficient separation of magnetite.
[0033] The principle utilized by the present utility model is as follows: In the long-term practice of weak magnetic separation of magnetite and low-weak magnetic field magnetic separation, linear magnetic agglomeration is proposed relative to the massive or clustered magnetic agglomeration in the traditional weak magnetic separation process. Its essence is that under the condition of a relatively uniform low-weak background magnetic field, strongly magnetic materials are self-driven magnetic agglomerated to form magnetic agglomerates under the traction of the magnetic forces of the opposite N and S poles. The magnetic agglomerates are linearly distributed parallel to the magnetic force lines. The biggest difference in the formation causes between linear magnetic agglomeration and massive or clustered magnetic agglomeration is that linear magnetic agglomeration occurs in a relatively uniform magnetic field, while massive and clustered magnetic agglomeration occur in a non-uniform, high-gradient magnetic field (such as weak magnetic separation).
[0034] There are two formation mechanisms of linear magnetic agglomeration, namely the electromagnetic magnetic system based on Ampere's rule and the parallel plate permanent magnetic magnetic system with opposite N and S poles. The schematic diagrams of the two are shown in Figure 3 、 Figure 4 In both of them, the magnetic force lines in the magnetic system are in a nearly linear linear structure, which to a certain extent reduces the degree of inclusion of magnetic agglomerates in the direction of the magnetic force lines.
[0035] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those skilled in the art, without departing from the overall concept of the present utility model, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present utility model.
Claims
1. A magnetite linear magnetic agglomeration column type sorting device, characterized in that: It includes a vertical cylindrical barrel (1). Inside the vertical cylindrical barrel (1), there is a cylindrical screen (2). On the outer side of the cylindrical screen (2), there is at least one circle of electromagnetic coils (3), and the electromagnetic coils (3) are distributed along the axial direction of the cylindrical screen (2). At the top of the vertical cylindrical barrel (1), there is an annular feeding hopper (4). At the lower part of the vertical cylindrical barrel (1), there is a water replenishing port (5), and the water replenishing port (5) is located in the tangential direction of the vertical cylindrical barrel (1). At the bottom of the vertical cylindrical barrel (1), there is at least one medium / tailings outlet (6). The area between the outer side of the cylindrical screen (2) and the inner wall of the vertical cylindrical barrel (1) is the medium / tailings gathering area (9), and the medium / tailings outlet (6) is located at the bottom of the medium / tailings gathering area (9). At the bottom of the vertical cylindrical barrel (1), there is a concentrate gathering area (7). The concentrate gathering area (7) is located below the cylindrical screen (2), and at the bottom of the concentrate gathering area (7), there is a concentrate outlet (8).
2. The linear magnetic agglomeration column type separation equipment for magnetite according to claim 1, characterized in that: The described cylindrical screen (2) includes a number of longitudinally arranged strip-shaped screens (21), and the strip-shaped screens (21) enclose a cylindrical shape. On the strip-shaped screens (21), there are a number of annular screens (22), and the annular screens (22) are arranged from top to bottom.
3. The linear magnetic agglomeration column type separation equipment for magnetite according to claim 2, characterized in that: The distance between adjacent annular screens (22) is 1 - 5 mm.
4. The linear magnetic agglomeration column type separation equipment for magnetite according to claim 2, characterized in that: On the radially outer surface of the annular screen (22), there are multiple groups of co-directional direct current electromagnetic coils (3), and the electromagnetic coils (3) are regularly arranged at intervals up and down.
5. A magnetite linear magnetic agglomeration column type separation device according to claim 1, characterized in that: The annular feeding hopper (4) includes a hopper body (41). Inside the hopper body (41), there is a cone (42), and the cone (42) is fixed on the hopper body (41) through an auxiliary support frame.