Magnetic medium cleaning system of magnetic separator

Abstract

The utility model belongs to the technical field of magnetic medium cleaning, and particularly relates to a magnetic medium cleaning system of a magnetic separator. The magnetic medium cleaning system of the magnetic separator comprises the magnetic separator, the alkali liquor tank, the steam heating device, the alkali liquor output pipe, the alkali liquor circulating pipe and the alkali liquor discharge pipe, the magnetic separator can be directly communicated with the alkali liquor tank through the alkali liquor output pipe and the alkali liquor circulating pipe, and alkali liquor for cleaning can be input into the alkali liquor tank through an ore inlet of the magnetic separator. The medium box does not need to be cleaned after being detached, the used alkali liquor can be circularly cleaned, and after the solute concentration reaches a certain value, the alkali liquor after cleaning can be discharged from the alkali liquor discharge pipe and returned to aluminum oxide production for utilization by adjusting related valves. In addition, an ultrasonic cleaning plate is further arranged in the device in a matched mode, alkali cleaning and ultrasonic cleaning can be combined, the cleaning effect is better, and the cleaning efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic medium cleaning, and in particular relates to a magnetic medium cleaning system for a magnetic separator. Background Art

[0002] In the field of mineral processing, high-gradient magnetic separators are a common method for removing iron impurities from products. However, as separators age, impurities inevitably adhere to the magnetic media, reducing separation efficiency. These impurities are typically composed of wood chips, fine plastics, iron filings, coarse-grained ore, and other weakly magnetic impurities in the production slurry. The complexity of these impurities complicates magnetic media cleaning, severely impacting separator efficiency.

[0003] Currently, several methods for cleaning magnetic media are used in industry, including ultrasonic cleaning, acid cleaning, and physical shaking. However, ultrasonic cleaning and acid cleaning only produce satisfactory results under specific conditions and are very time-consuming. Physical shaking, which requires striking the magnetic media, can easily damage it. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a magnetic medium cleaning system for a magnetic separator, which specifically includes the following contents:

[0005] A magnetic medium cleaning system for a magnetic separator, comprising a magnetic separator, an alkali solution tank, a steam heating device, an alkali solution output pipe, an alkali solution circulation pipe, and an alkali solution discharge pipe;

[0006] The magnetic separator is provided with an ore inlet, a concentrate outlet and a tailings outlet;

[0007] The steam heating device includes a steam heating coil group, a steam delivery pipe connected to the steam heating coil group, and a steam valve arranged on the steam delivery pipe. The steam heating coil group includes one or more circles of steam heating coils connected to each other, and the steam heating coil group is arranged at the bottom of the alkali solution tank.

[0008] One end of the alkali solution output pipe is connected to the interior of the alkali solution tank, and the other end extends into the ore inlet of the magnetic separator; the alkali solution output pipe is also provided with a first alkali solution delivery pump and a first alkali solution valve, and the first alkali solution valve is provided between the first alkali solution delivery pump and the ore inlet of the magnetic separator;

[0009] One end of the alkali solution circulation pipe is connected to the tailings outlet of the magnetic separator, and the other end extends into the alkali solution tank;

[0010] The alkali liquid discharge pipe includes a liquid inlet and a liquid outlet. The liquid inlet of the alkali liquid discharge pipe is connected to the alkali liquid output pipe. The connection is located between the first alkali liquid delivery pump and the first alkali liquid valve. A second alkali liquid valve is provided on the alkali liquid discharge pipe.

[0011] Preferably, the magnetic separator is a vertical magnetic separator.

[0012] Preferably, an ultrasonic cleaning plate is also provided in the vertical magnetic separator.

[0013] Preferably, the width of the ultrasonic cleaning plate is 1 / 2-1 of the width of the magnetic separator vertical ring, and the length of the ultrasonic cleaning plate is 1 / 5-1 / 3 of the diameter of the magnetic separator vertical ring; the ultrasonic cleaning plate is in direct contact with the material and is placed on the front of the vertical ring, and the height difference between the lower edge of the ultrasonic cleaning plate and the lower edge of the vertical ring is 0-1 / 5 of the length of the ultrasonic cleaning plate.

[0014] Preferably, a stirring device is further provided in the alkali solution tank.

[0015] Preferably, the volume of the alkali solution tank is more than 3 times the volume of the magnetic separator hopper.

[0016] Preferably, the top height of the alkali solution tank is more than 0.5m lower than the height of the magnetic separator outlet. Because the tailings outlet height of the magnetic separator 1 is higher than the alkali solution tank 2, gravity flow can be allowed when the valve is opened, which saves energy and ensures complete discharge.

[0017] Beneficial effects of the utility model:

[0018] The utility model discloses a magnetic separator magnetic medium cleaning system, comprising a magnetic separator, an alkali solution tank, a steam heating device, an alkali solution output pipe, an alkali solution circulation pipe, and an alkali solution discharge pipe. The alkali solution output pipe and the alkali solution circulation pipe enable direct connection between the magnetic separator and the alkali solution tank. Alkali solution for cleaning can be input into the magnetic separator through the ore inlet, without the need to remove the medium box for cleaning. The used alkali solution can be circulated for cleaning. When the solute concentration reaches a certain value, the cleaned alkali solution can be discharged from the alkali solution discharge pipe by adjusting the relevant valves and returned to the alumina production for utilization. In addition, the device is also equipped with an ultrasonic cleaning plate, which can combine alkali cleaning and ultrasonic cleaning to achieve better cleaning effect and higher cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model discloses a schematic diagram of the connection relationship of the magnetic medium cleaning system of the magnetic separator. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments shown below do not limit the scope of the invention as claimed in the claims. Furthermore, the entire contents of the embodiments shown below are not necessarily required to serve as the solution of the invention as claimed in the claims.

[0021] Reference Attachment Figure 1 , a magnetic medium cleaning system of a magnetic separator 1, comprising a magnetic separator 1, an alkali liquid tank 2, a steam heating device, an alkali liquid output pipe 3, an alkali liquid circulation pipe 4, and an alkali liquid discharge pipe 5; the magnetic separator 1 is provided with an ore inlet, a concentrate outlet and a tailings outlet; the steam heating device comprises a steam heating coil group 6, a steam delivery pipe 7 connected to the steam heating coil group 6, and a steam valve 8 arranged on the steam delivery pipe 7, the steam heating coil group 6 comprises one or more circles of steam heating coils connected to each other, and the steam heating coil group 6 is arranged at the bottom of the alkali liquid tank 2; one end of the alkali liquid output pipe 3 is connected to the alkali liquid tank 2 is internally connected, and the other end extends into the ore inlet of the magnetic separator 1; the alkali liquid output pipe 3 is further provided with a first alkali liquid delivery pump and a first alkali liquid valve, and the first alkali liquid valve is arranged between the first alkali liquid delivery pump and the ore inlet of the magnetic separator 1; one end of the alkali liquid circulation pipe 4 is connected to the tailings outlet of the magnetic separator 1, and the other end extends into the alkali liquid tank 2; the alkali liquid discharge pipe 5 includes a liquid inlet and a liquid outlet, the liquid inlet of the alkali liquid discharge pipe 5 is connected to the alkali liquid output pipe 3, and the connection is located between the first alkali liquid delivery pump and the first alkali liquid valve; the alkali liquid discharge pipe 5 is provided with a second alkali liquid valve.

[0022] In some embodiments of the present invention, the magnetic separator 1 is a vertical magnetic separator 1 .

[0023] In some embodiments of the present invention, an ultrasonic cleaning plate is further provided in the vertical magnetic separator 1 .

[0024] In some embodiments of the present invention, the ultrasonic cleaning plate has a width of 1 / 2-1 / 2 of the width of the vertical ring of the magnetic separator 1, and a length of 1 / 5-1 / 3 of the diameter of the vertical ring of the magnetic separator 1. The ultrasonic cleaning plate is in direct contact with the material and is placed in front of the vertical ring. The height difference between the lower edge of the ultrasonic cleaning plate and the lower edge of the vertical ring is 0-1 / 5 of the length of the ultrasonic cleaning plate. The length and width of the ultrasonic cleaning plate are limited for the following reasons: first, to facilitate its installation within the magnetic separator 11; second, to ensure that it remains immersed in the alkali solution while in the cylinder; and third, to ensure optimal ultrasonic cleaning results.

[0025] In some embodiments of the present invention, a stirring device is further provided in the alkali solution tank 2 .

[0026] In some embodiments of the present invention, the volume of the alkali solution tank 2 is more than three times the volume of the hopper of the magnetic separator 1 .

[0027] In some embodiments of the present invention, the top height of the alkali liquid tank 2 is more than 0.5m lower than the height of the ore outlet of the magnetic separator 1. Because the tailings outlet height of the magnetic separator 1 is higher than the alkali liquid tank 2, gravity can flow when the valve is opened, which saves energy while ensuring complete discharge.

[0028] The magnetic separator magnetic medium cleaning system disclosed in the utility model can achieve direct communication between the magnetic separator 1 and the alkali solution tank 2 through the alkali solution output pipe 3 and the alkali solution circulation pipe 4. The alkali solution used for cleaning can be input into the magnetic separator 1 through the ore inlet, without the need to remove the medium box for cleaning. The used alkali solution can be circulated for cleaning. When the solute concentration reaches a certain value, the cleaned alkali solution can be discharged from the alkali solution discharge pipe 5 by adjusting the relevant valves and returned to the alumina production for utilization. In addition, the device is also equipped with an ultrasonic cleaning plate, which can combine alkali cleaning and ultrasonic cleaning to achieve better cleaning effect and higher cleaning efficiency.

[0029] The utility model provides a method for cleaning the magnetic medium of a magnetic separator using the cleaning system disclosed in the utility model, comprising the following steps:

[0030] (1) transporting the alkali solution to the alkali solution tank 2 through the liquid alkali pipeline, and heating the alkali solution through the steam coil group 6;

[0031] (2) using a first alkali solution delivery pump to deliver the alkali solution heated to a certain temperature to the ore inlet of the magnetic separator 1 to clean the magnetic medium attached to the inside of the magnetic separator;

[0032] (3) The cleaned alkali solution is returned to the alkali solution tank 2 from the tailings outlet of the magnetic separator 1 through the alkali solution circulation pipe 4. Because the tailings outlet of the magnetic separator 1 is higher than the alkali solution tank 2, the valve can be opened to allow gravity to flow, which saves energy and ensures complete discharge.

[0033] (4) After cleaning for a certain period of time, the alkali solution is transported to the production process through the alkali solution discharge pipe 5 for recycling.

[0034] As a preferred option:

[0035] In step (1), the optimal heating temperature of the alkali solution is 70-100°C.

[0036] In step (1), the alkali solution can be sodium aluminate solution from the alumina process or industrial liquid alkali, with the caustic soda Nk concentration being not less than 200 g / L. If sodium aluminate solution from the alumina process is used, the molecular ratio αk of the sodium aluminate solution is ≥ 2.7.

[0037] In step (2), an ultrasonic cleaning plate can be optionally installed in the magnetic separator 1 so that the ultrasonic cleaning plate is in contact with the alkaline solution, and ultrasonic cleaning is started simultaneously with the alkaline cleaning.

[0038] In step (4), the cleaning time is 5-48 hours.

[0039] The alkali liquor is one of liquid alkali or evaporated mother liquor.

[0040] After testing, the system and method of the present invention were used to remove scabs from the magnetic separator after 8 hours of cleaning, and the removal rate of scabs from the magnetic separator after 48 hours of cleaning was 92%, demonstrating that the system of the present invention has a good effect in clearing magnetic media.

[0041] In the description of this application, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] Unless otherwise specified or limited, the terms "disposed" and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0043] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A magnetic medium cleaning system for a magnetic separator, characterized in that: It includes a magnetic separator, an alkali solution tank, a steam heating device, an alkali solution output pipe, an alkali solution circulation pipe, and an alkali solution discharge pipe; The magnetic separator is provided with an ore inlet, a concentrate outlet and a tailings outlet; The steam heating device includes a steam heating coil group, a steam delivery pipe connected to the steam heating coil group, and a steam valve arranged on the steam delivery pipe. The steam heating coil group includes one or more circles of steam heating coils connected to each other, and the steam heating coil group is arranged at the bottom of the alkali solution tank. One end of the alkali solution output pipe is connected to the interior of the alkali solution tank, and the other end extends into the ore inlet of the magnetic separator; the alkali solution output pipe is also provided with a first alkali solution delivery pump and a first alkali solution valve, and the first alkali solution valve is provided between the first alkali solution delivery pump and the ore inlet of the magnetic separator; One end of the alkali solution circulation pipe is connected to the tailings outlet of the magnetic separator, and the other end extends into the alkali solution tank; The alkali liquid discharge pipe includes a liquid inlet and a liquid outlet. The liquid inlet of the alkali liquid discharge pipe is connected to the alkali liquid output pipe. The connection is located between the first alkali liquid delivery pump and the first alkali liquid valve. A second alkali liquid valve is provided on the alkali liquid discharge pipe.

2. A magnetic separator magnetic medium cleaning system according to claim 1, characterized in that: The magnetic separator is a vertical magnetic separator.

3. A magnetic separator magnetic medium cleaning system according to claim 2, characterized in that: An ultrasonic cleaning plate is also provided in the vertical magnetic separator.

4. A magnetic medium cleaning system for a magnetic separator according to claim 3, characterized in that: The width of the ultrasonic cleaning plate is 1 / 2-1 of the width of the magnetic separator vertical ring, and the length of the ultrasonic cleaning plate is 1 / 5-1 / 3 of the diameter of the magnetic separator vertical ring; the ultrasonic cleaning plate is in direct contact with the material and is placed on the front of the vertical ring. The height difference between the lower edge of the ultrasonic cleaning plate and the lower edge of the vertical ring is 0-1 / 5 of the length of the ultrasonic cleaning plate.

5. The magnetic medium cleaning system for a magnetic separator according to claim 1, characterized in that: The alkali solution tank is also provided with a stirring device.

6. A magnetic medium cleaning system for a magnetic separator according to claim 1, characterized in that: The volume of the alkali solution tank is more than 3 times the volume of the magnetic separator hopper.

7. The magnetic medium cleaning system for a magnetic separator according to any one of claims 1 to 6, characterized in that: The top height of the alkali solution tank is more than 0.5m lower than the height of the magnetic separator outlet.

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