An electrostatic plate for a drum electrostatic separator

Abstract

The present invention relates to the technical field of mineral processing equipment, and discloses an electrostatic plate for a roller electrostatic separator, which includes an electrode plate body, the electrode plate body is set as a rectangular plate-type body, the electrode plate body includes a back plate, a panel, a copper bar and a high-voltage terminal, the copper bar is pasted on one side of the back plate, the copper bar is connected in a closed loop, the panel is bonded to the back plate and to the side of the back plate close to the copper bar, the copper bar is sealed between the back plate and the panel, the back plate is provided with a reserved hole for connecting the copper bar, one end of the high-voltage terminal passes through the reserved hole and is connected to the copper bar by soldering, and the other end of the high-voltage terminal is connected to a high-voltage source. The present invention has the advantages of expanding the effective range in the electrostatic separation process, increasing the surface area facing the roller, and improving the effect of material separation.

Description

Technical Field

[0001] The invention relates to the technical field of ore dressing equipment, in particular to an electrostatic plate used for a drum electric separator. Background Art

[0002] The working principle of the drum electrostatic separator is as follows: the mineral particles are charged by the corona electrode discharge, and enter the electrostatic field area under the rotation of the grounded roller. The conductive particles are thrown out along the tangent of the roller after discharge, and the non-conductive particles are adsorbed on the roller surface under the action of the electrostatic field, overcoming gravity and centrifugal force, and are separated from the conductive particles by the brushes overlapped on the roller surface. The electric field strength of the electrostatic field directly affects the effect of material sorting.

[0003] At present, most domestic drum electrostatic separators use tubular electrodes as electrostatic rods. This type of electrostatic rod is set parallel to the grounded drum. The surface area of ​​the electrostatic rod facing the roller is small, which limits the sorting space. In addition, the spatial field strength of the electrostatic rod is unevenly distributed, which ultimately leads to poor mineral sorting effects. Summary of the invention

[0004] In order to improve the effect of mineral separation, the present invention provides an electrostatic plate for a drum electrostatic separator.

[0005] The present invention provides an electrostatic plate for a drum electrostatic separator using the following technical solution:

[0006] An electrostatic plate for a drum electrostatic separator comprises an electrode plate body, which is arranged as a rectangular plate-type main body. The electrode plate body comprises a back plate, a panel, a copper bar and a high-voltage terminal. The copper bar is pasted on one side of the back plate, and the copper bar is connected in a closed loop. The panel is adhered to the back plate and to the side of the back plate close to the copper bar. The copper bar is sealed between the back plate and the panel. The back plate is provided with a reserved hole for connecting the copper bar. One end of the high-voltage terminal passes through the reserved hole and is soldered to the copper bar, and the other end of the high-voltage terminal is connected to a high-voltage source.

[0007] By adopting the above technical solution, a closed-loop copper bar is arranged between the back plate and the panel, and the copper bar is connected to a high-voltage source through a high-voltage terminal, so that the electrode plate body generates a magnetic field, thereby achieving the effect of sorting minerals. The electrode plate body is arranged as a rectangular plate-type body, which can increase the surface area facing the roller and the sorting space, thereby improving the sorting effect.

[0008] Preferably, it also includes a porcelain bottle assembly and a support frame, wherein a plurality of the porcelain bottle assemblies are provided, and the plurality of the porcelain bottle assemblies are evenly fixed on the back plate and on the side away from the copper bar, the length of the support frame is the same as the length of the electrode plate body, and the support frame is provided with a plurality of porcelain bottle mounting slots, and the plurality of the porcelain bottle mounting slots can be detachably connected to the porcelain bottle assembly.

[0009] By adopting the above technical solution and setting up a porcelain bottle assembly, it can effectively play an insulating role and reduce safety hazards.

[0010] Preferably, the back panel and the front panel are both glass panels.

[0011] By adopting the above technical solution, the glass is an insulator, and when the copper bar generates a magnetic field, the glass will not destroy the surrounding magnetic field.

[0012] Preferably, the porcelain bottle assembly includes a porcelain bottle and a screw fixedly connected in the middle of the porcelain bottle, and the porcelain bottle is bonded to the back plate by structural adhesive.

[0013] By adopting the above technical solution, since the back plate is a glass plate and the porcelain bottle is porcelain, structural adhesive is the most secure way to stick them together without destroying the back plate.

[0014] Preferably, the porcelain bottle mounting slot is provided with a connecting hole corresponding to the position of the screw rod, and the screw rod is also connected to a locking nut that matches the screw rod.

[0015] By adopting the above technical solution, a screw is arranged on the porcelain bottle, and a connecting hole is arranged on the porcelain bottle mounting slot, so that the support frame can be effectively fixed on the porcelain bottle.

[0016] Preferably, the support frame includes a square tube and an end plate, wherein two end plates are provided and the two end plates are symmetrically welded to the two ends of the square tube, and mounting holes for connecting the roller electric separator are opened on the end plates, and the porcelain bottle mounting slots are evenly installed on the square tube.

[0017] By adopting the above technical solution, a mounting hole is provided on the end plate, so that the end plate can be fixed on the drum electrostatic separator, thereby fixing the porcelain bottle on the drum electrostatic separator, and then fixing the electrode plate body on the drum electrostatic separator.

[0018] Preferably, the width of the back plate and the panel is ≤300 mm, and the thickness of the back plate and the panel is ≤6 mm.

[0019] By adopting the above technical solution, the space inside the drum electric separator is limited, so it is necessary to control the size of the back plate and the panel so that the back plate and the panel can be well installed inside the drum electric separator.

[0020] Preferably, the copper bar is made of pure copper with a copper content of ≥99.95%.

[0021] By adopting the above technical solution, the copper content of the copper strip directly affects the strength of the magnetic field. If the copper content is too low, the magnetic field strength will decrease, which will lead to poor sorting effect, so the copper content needs to be increased.

[0022] Preferably, the thickness of the copper strip should be less than 0.5 mm, and the width of the copper strip should be less than or equal to 20 mm.

[0023] By adopting the above technical solution, the space inside the drum electric separator is limited. If the volume of the copper bar is too large, it is not conducive to sealing the copper bar between the back plate and the panel.

[0024] In summary, the present invention has the following beneficial technical effects:

[0025] 1. A closed-loop copper strip is arranged between the back plate and the front plate. The copper strip is connected to a high-voltage source through a high-voltage terminal, so that the electrode plate body generates a magnetic field, thereby achieving the effect of sorting minerals. The electrode plate body is arranged as a rectangular plate body, which can increase the surface area facing the roller and the sorting space, thereby improving the sorting effect;

[0026] 2. The porcelain bottle assembly can effectively play an insulating role and reduce safety hazards;

[0027] 3. The space inside the drum electric separator is limited, so the width of the back plate and the panel needs to be controlled to ≤300mm and the thickness to ≤6mm so that the back plate and the panel can be well installed inside the drum electric separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an overall diagram of an electrostatic plate used in a drum electrostatic separator according to the present application.

[0029] Figure 2 This is a diagram of an electrode plate body in an electrostatic plate used in a drum electrostatic separator according to the present application.

[0030] Figure 3 This is a diagram of a porcelain bottle assembly in an electrostatic plate used in a drum electrostatic separator according to the present application.

[0031] Figure 4 This is a diagram of a support frame for an electrostatic plate of a drum electrostatic separator according to the present application.

[0032] Figure 5 The present invention discloses a schematic diagram of the internal separation of a drum electrostatic separator in an electrostatic plate used in the drum electrostatic separator.

[0033] Explanation of the reference numerals: 1. electrode plate body; 11. back plate; 12. panel; 13. copper bar; 14. high-voltage terminal; 2. porcelain bottle assembly; 21. porcelain bottle; 22. screw; 3. support frame; 31. square tube; 32. porcelain bottle mounting slot; 321. connecting hole; 33. end plate; 4. high-voltage source; 5. locking nut. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0036] The embodiment of the present invention discloses an electrostatic plate for a drum electrostatic separator. Figure 1 The electrostatic plate includes an electrode plate body 1, a porcelain bottle assembly 2 and a support frame 3. The electrode plate body 1 is configured as a rectangular plate-type body. The electrode plate body 1 includes a back plate 11, a panel 12, a copper bar 13 and a high-voltage terminal 14.

[0037] Reference Figure 2 The copper strip 13 is pasted on one side of the back plate 11, and the copper strip 13 is connected in a closed loop. The panel 12 is adhered to the back plate 11 and is adhered to the side of the back plate 11 close to the copper strip 13. The copper strip 13 is sealed between the back plate 11 and the panel 12. The back plate 11 is provided with a reserved hole for connecting the copper strip 13. One end of the high-voltage terminal 14 passes through the reserved hole and is soldered to the copper strip 13. The other end of the high-voltage terminal 14 is connected to the high-voltage source 4.

[0038] A closed-loop copper bar 13 is provided between the back plate 11 and the panel 12. The copper bar 13 is connected to the high-voltage source 4 through the high-voltage terminal 14, so that the electrode plate body 1 generates a magnetic field, thereby achieving the effect of sorting minerals. The electrode plate body 1 is arranged as a rectangular plate-type body, which can increase the surface area facing the roller and the sorting space, thereby improving the sorting effect.

[0039] There are multiple porcelain bottle assemblies 2, and the multiple porcelain bottle assemblies 2 are evenly fixed on the back plate 11 and on the side away from the copper bar 13. The length of the support frame 3 is the same as the length of the electrode plate body. The support frame 3 is provided with multiple porcelain bottle mounting slots 32, and the multiple porcelain bottle mounting slots 32 can be detachably connected to the porcelain bottle assemblies 2.

[0040] The porcelain bottle assembly 2 is provided to effectively play an insulating role and reduce potential safety hazards.

[0041] The back plate 11 and the front plate 12 are both glass plates. Since glass is an insulator, when the copper strip 13 generates a magnetic field, the glass does not destroy the surrounding magnetic field.

[0042] Reference Figure 3 The porcelain bottle assembly 2 includes a porcelain bottle 21 and a screw 22 fixedly connected to the middle of the porcelain bottle 21. The porcelain bottle 21 is bonded to the back plate 11 by structural adhesive. A connecting hole 321 corresponding to the position of the screw 22 is provided on the porcelain bottle mounting slot 32, and a locking nut 5 matching the screw 22 is also connected to the screw 22.

[0043] Since the back plate 11 is a glass plate and the porcelain bottle 21 is porcelain, the structural adhesive is the most secure and does not need to damage the back plate 11. The porcelain bottle 21 is provided with a screw 22, and the porcelain bottle mounting slot 32 is provided with a connecting hole 321, which can effectively fix the support frame 3 on the porcelain bottle 21.

[0044] Reference Figure 4 The support frame 3 includes a square tube 31 and an end plate 33. Two end plates 33 are provided. The two end plates 33 are symmetrically welded to the two ends of the square tube 31. The end plates 33 are provided with mounting holes for connecting the drum electric separator. The porcelain bottle mounting slots 32 are evenly installed on the square tube 31.

[0045] The end plate 33 is provided with a mounting hole, so that the end plate 33 can be fixed on the drum electrostatic separator, thereby fixing the porcelain bottle 21 on the drum electrostatic separator, and further fixing the electrode plate body 1 on the drum electrostatic separator.

[0046] Reference Figure 5 The drum electrostatic separator is equipped with a corona electrode and a grounded drum. The corona electrode can charge the sorted minerals. Under the action of the grounded drum, the mineral particles rotate. The electrostatic plate is installed in the drum electrostatic separator, and the charged mineral particles are separated by the magnetic field generated by the electrostatic plate.

[0047] The width of the back plate 11 and the front plate 12 is ≤300 mm, the thickness is ≤6 mm, the thickness of the copper strip 13 should be <0.5 mm, and the width is ≤20 mm.

[0048] Since the space inside the drum electrostatic separator is limited, the size of the back plate 11 and the panel 12 needs to be controlled so that the back plate 11 and the panel 12 can be well installed inside the drum electrostatic separator. In contrast, the back plate 11 and the panel 12 cannot be too large, and the copper bar 13 cannot be too large. If the volume of the copper bar 13 is too large, it is not conducive to the copper bar 13 being sealed between the back plate 11 and the panel 12.

[0049] The copper strip 13 is made of pure copper with a copper content of ≥99.95%.

[0050] The copper content of the copper strip 13 directly affects the strength of the magnetic field. If the copper content is too low, the magnetic field strength will decrease, which will lead to poor separation effect. Therefore, the copper content needs to be increased.

[0051] The implementation principle of an electrostatic plate used in a drum electrostatic separator in an embodiment of the present invention is as follows: a high voltage source 4 is started, and the material flows out of the hopper and falls onto a rotating grounded drum. The mineral particles are charged through discharge by the corona electrode and enter the sorting area under the action of the grounded drum. The conductive particles are discharged and thrown out along the tangent of the drum, while the non-conductive particles overcome gravity and centrifugal force and are adsorbed on the drum surface under the action of the magnetic field of the inclined electrostatic plate.

[0052] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrostatic plate for a drum electrostatic separator, characterized in that: The electrode plate body (1) comprises an electrode plate body (1), wherein the electrode plate body (1) is configured as a rectangular plate-type body, wherein the electrode plate body (1) comprises a back plate (11), a face plate (12), a copper bar (13) and a high-voltage terminal (14), wherein the copper bar (13) is adhered to one side of the back plate (11), and the copper bar (13) is connected in a closed loop, wherein the face plate (12) is adhered to the back plate (11) and to a side of the back plate (11) close to the copper bar (13), wherein the copper bar (13) is sealed between the back plate (11) and the face plate (12), wherein a reserved hole for connecting the copper bar (13) is provided on the back plate (11), wherein one end of the high-voltage terminal (14) passes through the reserved hole and is connected to the copper bar (13) by soldering, and wherein the other end of the high-voltage terminal (14) is connected to a high-voltage source (4); It also comprises a porcelain bottle assembly (2) and a support frame (3), wherein a plurality of the porcelain bottle assemblies (2) are provided, and the plurality of the porcelain bottle assemblies (2) are evenly fixed on a side of the back plate (11) away from the copper strip (13), the length of the support frame (3) is the same as the length of the electrode plate body, and the support frame (3) is provided with a plurality of porcelain bottle mounting slots (32), and the plurality of the porcelain bottle mounting slots (32) are detachably connected to the porcelain bottle assemblies (2); The back plate (11) and the front plate (12) are both glass plates; The porcelain bottle assembly (2) comprises a porcelain bottle (21) and a screw (22) fixedly connected to the middle of the porcelain bottle (21); the porcelain bottle (21) is bonded to the back plate (11) by means of a structural adhesive; The porcelain bottle mounting slot (32) is provided with a connection hole (321) corresponding to the position of the screw rod (22), and the screw rod (22) is also connected with a locking nut (5) that fits with the screw rod (22); The support frame (3) comprises a square tube (31) and an end plate (33), two end plates (33) are provided, and the two end plates (33) are symmetrically welded to the two ends of the square tube (31), and mounting holes for connecting to a drum electric separator are provided on the end plates (33), and the porcelain bottle mounting slots (32) are evenly mounted on the square tube (31).

2. The electrostatic plate for a drum electrostatic separator according to claim 1, characterized in that: The width of the back plate (11) and the front plate (12) is ≤300 mm, and the thickness of the back plate (11) and the front plate (12) is ≤6 mm.

3. The electrostatic plate for a drum electrostatic separator according to claim 1, characterized in that: The copper strip (13) is made of pure copper with a copper content of ≥99.95%.

4. The electrostatic plate for a drum electrostatic separator according to claim 3, characterized in that: The thickness of the copper strip (13) should be less than 0.5 mm, and the width of the copper strip (13) should be less than or equal to 20 mm.

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