Magnetic separation column

Abstract

The utility model relates to a magnetic separation column and belongs to the technical field of preparation equipment. The device comprises a separation cylinder (1) and an ore feeding pipe (2), a plurality of separation bins (4) are arranged in a gap between the separation cylinder (1) and the ore feeding pipe (2), and the separation bins (4) are vertically arranged and are axially parallel to the separation cylinder (1). In order to reduce the reduction of the sorting efficiency caused by turbulent flow of a sorting area in the sorting cylinder (1) of the magnetic separation column, a plurality of sorting bins (4) which are through from bottom to top are arranged in a gap between the sorting cylinder (1) and the ore feeding pipe (2), so that tailings rise along with water flow in the sorting bins (4), and concentrate descends against the water flow, the recovery rate is further improved, and the grade of the tailings is further reduced. The problems that turbulent flow at the tailing overflow position of an existing magnetic separation column is increased, coarse gangue is settled into concentrate, underflow water supply is forcibly increased, the tailing overflow speed is increased, part of the concentrate enters tailings, and the recovery rate is reduced are solved.

Description

Technical Field

[0001] This utility model relates to a magnetic separation column, belonging to the technical field of mineral processing equipment. Background Technology

[0002] Currently, when vanadium-titanium magnetite is further upgraded to obtain iron concentrate using magnetic separation columns, washing magnetic separators, or magnetic agglomeration gravity separation columns, the gangue minerals in vanadium-titanium magnetite are mainly high-density pyroxene and olivine, which are difficult to discharge from the tailings outlet. Therefore, the separation effect is relatively poor compared to non-vanadium-titanium magnetite.

[0003] Especially with the increasing size of magnetic separation columns, with diameters exceeding 1 meter, the increased turbulence on the upper surface of the separation cylinder and the increased tailings overflow area make it easier for coarse gangue to settle into the concentrate as it moves from the center to the edge to form tailings. This forces an increase in bottom water flow and a faster tailings overflow, resulting in some concentrate entering the tailings, increasing the tailings grade and decreasing the recovery rate. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the increased turbulence at the tailings overflow point of the existing magnetic separation column causes coarse gangue to settle into the concentrate, which actually forces an increase in the bottom flow water supply, increases the overflow speed of the tailings, and causes some of the concentrate to enter the tailings, resulting in a decrease in the recovery rate.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a magnetic separation column, including a separation cylinder and a feed pipe, wherein a plurality of separation chambers are arranged in the gap between the separation cylinder and the feed pipe, the separation chambers are arranged vertically and are parallel to the axis of the separation cylinder.

[0006] In the above structure, the lower end of the sorting bin extends to the middle of the sorting cylinder.

[0007] Furthermore, the above structure also includes a tailings overflow trough, which is spaced apart on the upper part of the sorting cylinder and is perpendicular to the sorting bin. The upper sidewall of the tailings overflow trough is connected to the upper sidewall of the sorting cylinder.

[0008] Furthermore, in the above structure, several arc-shaped overflow channels are provided at intervals on both sides of the tailings overflow channel and the side wall in contact with the sorting bin.

[0009] In the above structure, the bottom surface of the tailings overflow trough is an inclined surface, and the inclined direction is downward.

[0010] Furthermore, the bottom of the tailings overflow trough in the above structure is an inverted V-shaped structure.

[0011] Furthermore, the tailings overflow troughs described above are spaced-apart straight-line structures and are arranged radially parallel to the sorting cylinders.

[0012] The beneficial effects of this invention are as follows: To reduce the decrease in separation efficiency caused by turbulence in the separation zone within the magnetic separator column, several permeable separation chambers are designed inside the column, flowing upwards. Tailings rise with the water flow, while magnetic aggregates and iron concentrate descend against the water flow, further improving recovery rate and reducing tailings grade. This structure also incorporates multiple tailings overflow channels, allowing tailings to pass through the overflow surface and enter the tailings trench in a shorter time. This prevents gangue minerals from entering the concentrate due to gravity as they move from the center to the edge of the overflow surface, thus improving concentrate grade. Attached Figure Description

[0013] Figure 1 This is a schematic cross-sectional view of the present invention.

[0014] Figure 2 This is a top view of the structure of this utility model.

[0015] The diagram is marked as follows: 1 is the sorting cylinder, 2 is the feed pipe, 3 is the tailings overflow trough, 31 is the overflow opening, and 4 is the sorting bin. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figure 1 and Figure 2 The present invention provides a magnetic separation column comprising a separation cylinder 1 and a feed pipe 2. A plurality of separation chambers 4 are disposed within the gap between the separation cylinder 1 and the feed pipe 2. The separation chambers 4 are vertically arranged and parallel to the axial direction of the separation cylinder 1. Those skilled in the art will understand that this structure includes a separation cylinder 1 and a feed pipe 2, with the feed pipe 2 extending vertically into the separation cylinder 1 along its middle section for feeding. To reduce turbulence on the upper surface of the liquid in the separation cylinder 1, a plurality of separation chambers 4 are disposed within the gap between the separation cylinder 1 and the feed pipe 2. Since the separation chambers 4 are permeable structures from bottom to top, i.e., square tubular structures, the water flows in a laminar flow from bottom to top into the tailings trough within the separation chambers 4, while the iron concentrate descends against the water flow, further improving the recovery rate and reducing the tailings grade. Preferably, the separation chambers 4 are vertically arranged and parallel to the axial direction of the separation cylinder 1.

[0018] Preferably, in the above structure, the lower end of the sorting bin 4 extends to the middle of the sorting cylinder 1. Those skilled in the art will understand that, since an excitation coil is installed in the middle of part of the sorting cylinder 1 to adsorb concentrate, this structure, in order not to affect the operation of the excitation coil, preferably extends the lower end of the sorting bin 4 to the middle of the sorting cylinder 1.

[0019] Preferably, the above structure further includes tailings overflow troughs 3, which are spaced apart on the upper part of the sorting cylinder 1 and perpendicular to the sorting bin 4. The upper sidewall of the tailings overflow troughs 3 is connected to the upper sidewall of the sorting cylinder 1. Those skilled in the art will understand that this structure further includes multiple spaced tailings overflow troughs 3 on the upper part of the sorting cylinder 1, with the tailings overflow troughs 3 perpendicular to the sorting bin 4. The tailings overflow troughs 3 divide the sorting bin 4 into several groups, and the upper sidewall of the tailings overflow troughs 3 is connected to the upper sidewall of the sorting cylinder 1. That is, the sidewall of the sorting bin 4 is connected to the sidewall of the corresponding tailings overflow trough 3. This structural arrangement allows tailings to flow upwards from inside the sorting bin 4 into the tailings overflow troughs 3, achieving tailings discharge. This structural design allows tailings to pass through the overflow surface and enter the external tailings trough in a shorter time, preventing gangue minerals from entering the concentrate due to gravity as they move from the center to the edge of the overflow surface, thus improving the concentrate grade.

[0020] Preferably, in the above structure, several arc-shaped overflow openings 31 are provided at intervals on both sides of the tailings overflow trough 3 and the sidewalls in contact with the sorting bin 4. Those skilled in the art will understand that, in order to facilitate the timely discharge of tailings, the upper sidewall of the sorting bin 4 in this structure is connected to the sidewall of the tailings overflow trough 3, so that the tailings flowing from bottom to top along the inner wall of the sorting bin 4 directly enter the tailings overflow trough 3 from the upper sidewall of the sorting bin 4 and flow out promptly. Therefore, in this preferred structure, several arc-shaped overflow openings 31 are provided at intervals on both sides of the tailings overflow trough 3 and the sidewalls in contact with the sorting bin 4, allowing the tailings to enter the tailings overflow trough 3 through the overflow openings 31 and then be quickly discharged.

[0021] In the above structure, the bottom surface of the tailings overflow trough 3 is an inclined surface, and the inclination direction is downward. It can be understood by those skilled in the art that, in order to ensure the flow velocity of the tailings overflow trough 3, it is actually preferred that the bottom surface of the tailings overflow trough 3 is an inclined surface, and the inclination direction is downward, that is, the bottom height at the center of the tailings overflow trough 3 is greater than the bottom height at the outer side.

[0022] Preferably, the bottom of the tailings overflow trough 3 in the above structure is an inverted V-shaped structure. Those skilled in the art will understand that, in order to facilitate the rapid discharge of tailings along the tailings overflow trough 3, this structure preferably uses an inverted V-shaped bottom for the tailings overflow trough 3, utilizing the height difference between the middle and outer sides to achieve rapid tailings discharge. This also shortens the time tailings remain in the tailings overflow trough 3, increasing the flow rate and facilitating timely tailings outflow.

[0023] Preferably, the tailings overflow troughs 3 described above are arranged in a straight line at intervals and are radially parallel to the sorting cylinder 1. Those skilled in the art will understand that the arrangement shape of the tailings overflow troughs 3 is further preferred in this structure. To facilitate timely tailings outflow, the tailings overflow troughs 3 are preferably arranged in a straight line at intervals and are radially parallel to the sorting cylinder 1.

Claims

1. A magnetic separation column, comprising a separation cylinder (1) and a feed pipe (2), characterized in that: Several sorting bins (4) are provided in the gap between the sorting cylinder (1) and the feed pipe (2). The sorting bins (4) are vertically arranged and parallel to the axis of the sorting cylinder (1).

2. A magnetic separator column according to claim 1, characterized in that: The lower end of the sorting bin (4) extends to the middle of the sorting cylinder (1).

3. A magnetic separator column according to claim 2, characterized in that: It also includes a tailings overflow trough (3), which is spaced apart on the upper part of the sorting cylinder (1) and is perpendicular to the sorting bin (4). The upper side wall of the tailings overflow trough (3) is connected to the upper side wall of the sorting cylinder (1).

4. A magnetic separator column according to claim 3, characterized in that: Several arc-shaped overflow openings (31) are provided at intervals on both sides of the tailings overflow trough (3) and the side wall in contact with the sorting bin (4).

5. A magnetic separator column according to claim 3, characterized in that: The bottom surface of the tailings overflow trough (3) is inclined, and the inclination direction is downward.

6. A magnetic separator column according to claim 5, characterized in that: The bottom of the tailings overflow trough (3) has an inverted V-shaped structure.

7. A magnetic separator column according to claim 3, characterized in that: The tailings overflow trough (3) is a straight structure with intervals, and is arranged radially parallel to the sorting cylinder (1).

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