Electrolysis anode and electrolysis device

Abstract

The electrolytic anode comprises a main shaft and a plurality of containing grooves, any containing groove is connected with the main shaft, the containing grooves are distributed in the circumferential direction of the main shaft, and screen holes are formed in the wall faces of the containing grooves. The containing groove of the basket-shaped structure can enlarge the contact area of the anode and metal, the adsorption capacity of the anode to metal particles is improved, the phenomenon that the metal particles are separated from the surface of the anode is reduced, the situation that anode falling particles sink into the bottom of an electrolytic bath is slowed down, and it is guaranteed that the metal electrolytic refining process is smoothly conducted.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electrolysis technology, and in particular to an electrolysis anode and an electrolysis device. Background Art

[0002] Electrolytic refining, the process of electroplating metal cations from molten salt onto a metal cathode, is a key step in metal purification and spent fuel reprocessing. Electrolytic refining removes impurities from metals. Due to its advantages in high-temperature processing, including compactness, proliferation resistance, and reduced secondary waste generation, the process has been widely developed and applied to the purification of uranium and transuranic metals.

[0003] The shapes of crude materials and spent fuels of metals such as uranium and transuranium are not fixed and their sizes vary greatly. The sheet-shaped, rod-shaped and mesh-shaped anode structures in related technologies have a small contact area with the metal during the electrolysis process. The strong dissolution effect weakens the bonding force between the particles and the matrix, causing the metal particles to easily fall off the anode surface, affecting the progress of the metal electrolytic refining process. Utility Model Content

[0004] This application aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present invention provides an electrolytic anode.

[0006] A second aspect of the present invention provides an electrolysis device.

[0007] In view of this, according to the first aspect of the technical solution of the present application, an electrolytic anode is proposed, which includes: a main shaft and multiple accommodating grooves, any one of which is connected to the main shaft, and the multiple accommodating grooves are distributed along the circumference of the main shaft, and sieve holes are provided on the wall surface of the accommodating groove.

[0008] In some technical solutions provided in the present application, optionally, the width of one end of the accommodating groove connected to the main shaft is smaller than the width of the other end of the accommodating groove.

[0009] In some technical solutions provided in the present application, optionally, the depth direction of the accommodating groove is the same as the axial direction of the main shaft.

[0010] In some technical solutions provided in this application, optionally, a spacing is provided between adjacent accommodating grooves.

[0011] In some technical solutions provided in this application, optionally, the sieve holes are evenly distributed on the side walls and bottom walls of the receiving tank, and the distribution density of the sieve holes is greater than or equal to 0.3 / mm 2 .

[0012] In some technical solutions provided in the present application, optionally, the main shaft includes: a connecting shaft and a top shaft, the connecting shaft is connected to the accommodating groove, the top shaft is connected to the top of the connecting shaft, and the shaft diameter of the connecting shaft is larger than the shaft diameter of the top shaft.

[0013] In some technical solutions provided in the present application, optionally, the electrolytic anode further includes a rotary vane, which is connected to the top of the main shaft and extends out of the main shaft in a radial direction of the main shaft.

[0014] In some technical solutions provided in the present application, optionally, there are multiple rotors, and the multiple rotors are distributed along the circumference of the main shaft, and the angles between adjacent rotors are equal.

[0015] In some technical solutions provided in the present application, optionally, the electrolytic anode is manufactured using an integral molding process, and / or the room temperature tensile strength of the electrolytic anode is 600 MPa to 700 MPa.

[0016] The second technical solution of the present application provides an electrolysis device, which includes the electrolysis anode provided by any one of the above-mentioned first technical solutions.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The basket-shaped holding tank can expand the contact area between the anode and the metal, improve the anode's adsorption force on metal particles, reduce the phenomenon of metal particles detaching from the anode surface, slow down the sinking of anode particles to the bottom of the electrolytic cell, and ensure the smooth progress of the metal electrolytic refining process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0020] Figure 1 This is one of the structural schematic diagrams of the electrolytic anode according to an embodiment of the present application;

[0021] Figure 2 This is a second structural diagram of an electrolytic anode according to an embodiment of the present application;

[0022] Figure 3 This is the third structural schematic diagram of the electrolytic anode according to an embodiment of the present application.

[0023] in, Figures 1 to 3 The corresponding relationship between the reference numerals and component names is as follows:

[0024] 10 electrolytic anodes, 100 main shaft, 110 connecting shaft, 120 top shaft, 200 receiving tank, 210 sieve hole, 300 rotary vane. DETAILED DESCRIPTION

[0025] In order to better understand the above technical solution, the technical solution of the embodiment of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiment of the present application and the specific features in the embodiment are detailed descriptions of the technical solution of the embodiment of the present application, rather than limitations on the technical solution of the present application. In the absence of conflict, the embodiment of the present application and the technical features in the embodiment can be combined with each other.

[0026] The first embodiment of the present application provides an electrolytic anode 10, such as Figures 1 to 3 As shown, the electrolytic anode 10 includes: a main shaft 100 and multiple receiving grooves 200, any receiving groove 200 is connected to the main shaft 100, and multiple receiving grooves 200 are distributed along the circumference of the main shaft 100, and sieve holes 210 are provided on the wall surface of the receiving groove 200.

[0027] In this embodiment, the receiving tank 200 is used to accommodate the metal to be electrolyzed. The receiving tank 200 surrounds the outer periphery of the metal. One end of each receiving tank 200 is connected to the main shaft 100, and the other end extends away from the main shaft 100. Figure 2 The arrow R in the figure points to the circumference of the main shaft 100. A plurality of holding tanks 200 surround the main shaft 100. The walls of the holding tanks 200 are provided with a plurality of sieve holes 210, forming a compact basket-like structure. The holding tanks 200 can be placed in an electrolyte, which can be a liquid molten salt. The electrolyte passes through the sieve holes 210 into the holding tanks 200, where it electrolytically refines the metal within.

[0028] The basket-shaped holding tank 200 can expand the contact area between the anode and the metal, improve the anode's adsorption force on metal particles, reduce the phenomenon of metal particles detaching from the anode surface, slow down the sinking of anode particles to the bottom of the electrolytic cell, and ensure the smooth progress of the metal electrolytic refining process.

[0029] For example, the number of the receiving slots 200 can be three, four or five, and the shape of the receiving slots 200 can be the same as that of the metal. The receiving size of the receiving slots 200 is larger than that of the metal, so that the receiving space of the receiving slots 200 is adapted to the shape of the metal. Figure 3 As shown, the height H1 of the electrolytic anode 10 along the axial direction is 80 mm to 120 mm, and the height H1 may be 100 mm.

[0030] In some embodiments provided in this application, Figure 2As shown, optionally, the width of one end of the accommodating groove 200 connected to the main shaft 100 is smaller than the width of the other end of the accommodating groove 200 .

[0031] In this embodiment, Figure 3 The arrow at Y in the figure points to the axial direction of the main shaft 100, and the arrow at X points to the radial direction of the main shaft 100. The side wall of the accommodating groove 200 extends along the axial direction of the main shaft 100. Figure 2 As shown, the distance L between the two ends of the receiving groove 200 represents the length of the receiving groove 200, and the distance D between the sidewalls of the receiving groove 200 represents the width of the receiving groove 200. Along the radial direction of the main shaft 100, the sidewalls of the receiving groove 200 gradually expand outward, causing the width of the receiving groove 200 to gradually increase. The receiving groove 200 is in a teardrop shape, which expands the receiving space at the end, increases the contact area between the receiving groove 200 and the metal, and improves the adsorption force of the anode on the metal particles.

[0032] Exemplarily, the length and maximum width of the receiving groove 200 are 20 mm to 30 mm, the length of the receiving groove 200 may be 27 mm, the maximum width of the receiving groove 200 may be 21 mm, and the wall thickness of the receiving groove 200 may be 3 mm, 4 mm, or 5 mm.

[0033] In some embodiments provided in this application, Figure 3 As shown, optionally, the depth direction of the accommodating groove 200 is the same as the axial direction of the main shaft 100 .

[0034] In this embodiment, the axial extension path of the side wall of the receiving groove 200 is a straight line, and a plane perpendicular to the axial direction is used as a cutting plane to cut the receiving groove 200 to obtain a cross section. When the cutting plane moves along the axial direction, the area of ​​the cross section remains unchanged, so that the receiving space of the receiving groove 200 extends uniformly along the axial direction, so that the receiving groove 200 is adapted to the shape of the metal, thereby increasing the contact area between the receiving groove 200 and the metal and improving the adsorption force of the anode on the metal particles.

[0035] For example, Figure 3 As shown, the distance H2 between the two ends of the side wall of the receiving groove 200 in the depth direction is the height of the receiving groove 200. The height of the receiving groove 200 is 30 mm to 40 mm, and the height of the receiving groove 200 can be 35 mm.

[0036] In some embodiments provided in this application, Figure 2 As shown, optionally, a spacing is provided between adjacent receiving grooves 200 .

[0037] In this embodiment, multiple receiving tanks 200 are spaced apart, and the spacing between adjacent receiving tanks 200 is equal, so as to avoid the receiving tanks 200 blocking the flow of electrolyte, expand the flow space of the electrolyte around the receiving tanks 200, facilitate more electrolyte to enter the receiving tanks 200, and improve the electrolysis effect of the anode.

[0038] In some embodiments provided in this application, Figure 1 and Figure 2 As shown, optionally, the sieve holes 210 are evenly distributed on the side wall and the bottom wall of the receiving tank 200, and the distribution density of the sieve holes 210 is greater than or equal to 0.3 / mm 2 .

[0039] In this embodiment, sieve holes 210 are provided on the side walls and bottom walls of the receiving tank 200. The aperture of the sieve holes 210 is 0.5 mm to 1.5 mm, and the aperture can be 1 mm. The number of sieve holes 210 distributed per unit surface is the distribution density of the sieve holes 210, and the distribution density is greater than or equal to 0.3 holes / mm 2 , so that the sieve holes 210 are densely distributed on the side walls and bottom walls of the containing tank 200, the electrolyte can enter the containing tank 200 evenly from the side and bottom, and contact the metal in all directions, thereby improving the uniformity of the contact between the metal and the electrolyte, and thus improving the electrolysis effect.

[0040] In some embodiments provided in this application, Figure 1 As shown, optionally, the main shaft 100 includes: a connecting shaft 110 and a top shaft 120, the connecting shaft 110 is connected to the accommodating groove 200, the top shaft 120 is connected to the top of the connecting shaft 110, and the shaft diameter of the connecting shaft 110 is larger than the shaft diameter of the top shaft 120.

[0041] In this embodiment, the top shaft 120 is located above the connecting shaft 110, and the connection position between the top shaft 120 and the connecting shaft 110 is provided with a rounded corner. The shaft diameter of the connecting shaft 110 is larger than the shaft diameter of the top shaft 120, so that the top diameter of the main shaft 100 is reduced, thereby improving the lightness of the main shaft 100, facilitating the assembly of the electrolytic anode 10 into a specific electrolytic device, and saving the material cost of the main shaft 100.

[0042] In some embodiments provided in this application, Figures 1 to 3 As shown, optionally, the electrolytic anode 10 further includes a rotary vane 300 , which is connected to the top of the main shaft 100 and extends out of the main shaft 100 in a radial direction thereof.

[0043] In this embodiment, a rotor 300 extending outward is provided on the top of the main shaft 100. During the electrolytic refining process, the rotor 300 is rotated at regular intervals so that the receiving tank 200 rotates along with the main shaft 100, thereby increasing the convection of the electrolyte and improving the electrolysis efficiency.

[0044] In some embodiments provided in this application, Figure 2 As shown, optionally, there are multiple rotor blades 300 , and the multiple rotor blades 300 are distributed along the circumference of the main shaft 100 , and the angles between adjacent rotor blades 300 are equal.

[0045] In this embodiment, the plurality of rotary vanes 300 are evenly distributed along the circumference of the main shaft 100 , which improves the convenience of operating the rotary vanes 300 , and facilitates determining the rotation angle of the electrolytic anode 10 through the rotation position of the rotary vanes 300 .

[0046] For example, there are four rotor blades 300 , and the angle between adjacent rotor blades 300 is 90°. When any rotor blade 300 rotates to the position of the adjacent rotor blade 300 , the rotation angle of the electrolytic anode 10 is 90°.

[0047] In some embodiments provided herein, optionally, the electrolytic anode 10 is manufactured using an integral molding process, and / or the room temperature tensile strength of the electrolytic anode 10 is 600 MPa to 700 MPa.

[0048] In this embodiment, the electrolytic anode 10 is manufactured using an integrated molding process, which improves the overall structural strength of the electrolytic anode 10, avoids subsequent casting and welding processes, and prevents welds and heat-affected zones from being corroded by the electrolyte.

[0049] For example, the electrolytic anode 10 is manufactured using laser selective melting 3D printing technology. This involves using a laser as an energy source to shape metal powder, thereby enhancing the mechanical properties of the electrolytic anode 10. 3D printing, which requires only a single step to produce a product, offers significant advantages in industrialized, large-scale production, with lower labor and equipment costs and increased safety.

[0050] The room temperature tensile strength of the electrolytic anode 10 is 600 MPa to 700 MPa, and the room temperature tensile strength may be 618 MPa.

[0051] For example, the electrolytic anode 10 is made of stainless steel or a nickel-based alloy, which is conductive and corrosion-resistant. A 10mA constant current corrosion test was conducted on the electrolytic anode 10 for 1 hour, and the weight change before and after corrosion was less than 0.01g. The corrosion solvent was a eutectic salt of LiCl (lithium chloride) and KCl (potassium chloride) at a mass fraction ratio of 54.7:45.3 at 550°C.

[0052] In a second aspect embodiment of the present application, an electrolysis device is provided, which includes the electrolysis anode 10 provided by any one of the first aspect embodiments described above.

[0053] In this embodiment, it should be noted that the electrolysis device includes the electrolysis anode 10 provided in any of the above embodiments, and thus has all the beneficial technical effects of the above electrolysis anode 10. To avoid repetition, they are not described here.

[0054] In a specific embodiment, the manufacturing equipment of the electrolytic anode 10 is a small-scale laser selective melting manufacturing equipment, which is equipped with a continuous fiber laser with a laser wavelength of 1060nm and a maximum forming efficiency of 15cm 3 The particle size of the formed metal powder is 15 μm to 53 μm, the metal powder has high sphericity, and the content is less than 200 ppm.

[0055] First, a three-dimensional model of the metal anode basket (i.e., the electrolytic anode 10) is constructed. To prevent cracking, a support structure is added to the bottom of the metal anode basket. The support structure is a solid support, and a circular arc transition is used from the bottom of the anode basket to the substrate, with a transition height of 2 mm. Then, slicing software, such as MaterialiseMagics software, is used to slice the constructed three-dimensional model of the metal anode basket and the support structure to obtain slice data. The slice data is scanned and path-planned to form scan path data. The scan path data is then imported into a laser selective melting device. 20 kg of spherical stainless steel powder is loaded into the laser selective melting device. Argon gas, an inert gas with a purity of 99.999%, is introduced into the forming chamber at a flow rate of 4-5 L / min. The oxygen concentration in the forming chamber does not exceed 10 ppm.

[0056] A laser beam is used to perform selective scanning and printing on the alloy powder. The printing process is carried out in the order of support, lower surface of the metal anode basket, main body and upper surface. The process parameters such as laser power, scanning rate and scanning spacing are adjusted. The scanning method adopts strip mode, strip overlap -0.04mm, path spacing 0.04mm to 0.08mm, spot diameter 100μm, laser power 50W to 150W, scanning rate 300mm / s to 2000mm / s. The stainless steel anode basket is formed by stacking layer by layer.

[0057] By integrating the manufacturing process of metal anode baskets through 3D printing, special-shaped parts can be produced. The size and shape of the anode baskets can be adjusted according to the size and shape of the coarse material and waste fuel to meet the needs of metal purification and waste fuel electrolytic refining of different shapes.

[0058] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0059] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying 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 unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0060] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0061] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An electrolytic anode, characterized in that: include: spindle; A plurality of accommodating grooves, any of which is connected to the main shaft, are distributed along the circumference of the main shaft, and sieve holes are provided on the wall surface of the accommodating groove.

2. The electrolytic anode according to claim 1, characterized in that The width of one end of the accommodating groove connected to the main shaft is smaller than the width of the other end of the accommodating groove.

3. The electrolytic anode according to claim 1, characterized in that The depth direction of the accommodating groove is the same as the axial direction of the main shaft.

4. The electrolytic anode according to claim 1, characterized in that There is a distance between adjacent accommodating grooves.

5. The electrolytic anode according to claim 1, characterized in that The sieve holes are evenly distributed on the side walls and bottom walls of the receiving tank, and the distribution density of the sieve holes is greater than or equal to 0.3 holes / mm 2 .

6. The electrolytic anode according to claim 1, characterized in that The main shaft comprises: A connecting shaft connected to the receiving groove; A top shaft is connected to the top of the connecting shaft, and the diameter of the connecting shaft is larger than the diameter of the top shaft.

7. The electrolytic anode according to claim 1, characterized in that Also includes: The rotary vane is connected to the top of the main shaft, and the rotary vane extends out of the main shaft in a radial direction of the main shaft.

8. The electrolytic anode according to claim 7, characterized in that There are multiple rotor blades, which are distributed along the circumference of the main shaft, and the angles between adjacent rotor blades are equal.

9. The electrolysis anode according to any one of claims 1 to 8, characterized in that The electrolytic anode is manufactured by an integrated molding process; and / or The room temperature tensile strength of the electrolytic anode is 600 MPa to 700 MPa.

10. An electrolysis device, characterized in that: include: The electrolysis anode according to any one of claims 1 to 9.

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