A special metal continuous electrolytic refining device and method

Abstract

The present invention relates to the field of metal electrolytic refining, and particularly to a special metal continuous electrolytic refining device and method. The device includes: an electrolysis chamber, a stripping and collecting chamber, and a material receiving box. The stripping and collecting chamber is connected to the upper part of the electrolysis chamber, and an isolation and sealing door is arranged between the two; a heating furnace body is arranged at the bottom of the electrolysis chamber, and an anode metal plate is arranged at the top of the heating furnace body; a material placing basket is connected to the anode metal plate; the heating furnace body is insulated from the anode metal plate and the material placing basket; a screw rod automatic lifting unit is arranged at the top of the electrolysis chamber, and the bottom of the screw rod automatic lifting unit is connected to the cathode through a connecting rod; an automatic stripping unit and a cathode transfer unit are arranged in the stripping and collecting chamber; the cathode transfer unit is arranged at the upper part of the stripping and collecting chamber; the material receiving box is connected to the bottom opening of the stripping and collecting chamber and is arranged below the automatic stripping unit. The present invention is suitable for the continuous electrolytic refining production of special metals, and has a high direct product collection rate.

Description

Technical Field

[0001] The present invention relates to the field of metal electrolytic refining, and particularly to a special metal continuous electrolytic refining device and method. Background Art

[0002] The electrolytic refining device mainly refers to a device that uses a crude metal as an anode, a salt solution containing a prefabricated metal as an electrolyte, controls a certain potential so that impurities with a solution potential more positive than the refined metal remain in the anode deposit, and impurities with a dissolution potential more negative than the refined metal dissolve into the solution, thereby obtaining a metal with higher purity.

[0003] Currently, electrolytic refining devices are mainly used in non-ferrous metallurgy, such as copper, gold, silver, platinum, nickel, lead, etc. There is no specialized electrolytic refining device for radioactive and easily oxidized metals in China, such as uranium metal. The metal electrolytic refining devices produced by other manufacturers cannot meet the production needs in terms of collection rate, sealing performance, and requirements related to the continuous electrolytic production of special metals. Therefore, it is very necessary to invent a more targeted professional device for electrolyzing this metal. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a special metal continuous electrolytic refining device and method that conforms to the continuous electrolytic refining production work of special metals and has a high direct collection rate of products.

[0005] The present invention provides a special metal continuous electrolytic refining device, including: an electrolysis chamber, a stripping and collection chamber, and a material receiving box. The stripping and collection chamber is connected to the upper part of the electrolysis chamber, and an isolation and sealing door is provided between the two.

[0006] A heating furnace body is provided at the bottom of the electrolysis chamber, and an anode metal plate is provided at the top of the heating furnace body; a material placing basket is connected to the anode metal plate; the heating furnace body is insulated from the anode metal plate and the material placing basket.

[0007] A screw rod automatic lifting unit is provided at the top of the electrolysis chamber, and the bottom of the screw rod automatic lifting unit is connected to a cathode through a connecting rod.

[0008] An automatic stripping unit and a cathode transfer unit are provided in the stripping and collection chamber.

[0009] The cathode transfer unit is provided at the upper part of the stripping and collection chamber.

[0010] The material receiving box is connected to the bottom opening of the stripping and collection chamber and is provided below the automatic stripping unit.

[0011] Preferably, it further includes: a dendrite dropping collection tooling, which is provided in the heating furnace body and is located directly below the cathode.

[0012] Preferably, the dendritic drop collection tooling includes a bracket and a collection plate. The bracket is barrel-shaped with openings at both the top and bottom. There are 4 card slots on the upper part, which are clamped with the protruding parts of the connecting rod to place and lift the cathode. Small holes are respectively arranged at both ends of the lower opening of the bracket and fixed to the protruding parts on the bottom surface of the collection plate.

[0013] Preferably, it further includes: a loading basket mounting bracket;

[0014] The loading basket mounting bracket is fixed to the anode metal plate through fastening bolts;

[0015] The loading basket is suspended and installed on the loading basket mounting bracket in a circumferentially evenly distributed manner, and the loading basket does not contact the inner wall of the heating furnace.

[0016] Preferably, a ceramic coating is provided on the contact surface between the anode metal plate and the heating furnace body.

[0017] Preferably, the outer wall of the electrolysis chamber is a shielding body.

[0018] Preferably, the cathode transfer unit includes: a guide rail, an automatic transfer mechanism, a cathode gripper, and a positioning component;

[0019] The guide rail is arranged on the upper part of the automatic stripping unit, and its two ends are respectively connected to the positioning components;

[0020] The positioning components are fixed on the side wall of the stripping and collection chamber for fixing the guide rail in the stripping and collection chamber;

[0021] The automatic transfer mechanism is movably connected to the guide rail, and the PLC controls the approaching motor to realize the lateral movement of the automatic transfer mechanism along the guide rail;

[0022] The cathode gripper is connected to the lower end of the automatic transfer mechanism for transporting the cathode.

[0023] Preferably, the cathode gripper consists of a telescopic sleeve and a gripper, and the telescopic action and the gripping action are completed by the PLC controlling the stepping motor.

[0024] Preferably, the automatic stripping unit includes a stripping knife, a mounting bracket, and a three-jaw chuck;

[0025] The stripping knife is movably connected to the mounting bracket and moves left and right horizontally;

[0026] The three-jaw chuck is fixedly connected to the mounting bracket.

[0027] Preferably, the stripping and collection chamber is made of a glove box.

[0028] Preferably, a collection funnel is further arranged in the stripping and collection chamber. The bottom of the collection funnel is correspondingly communicated with the material receiving box, and the upper part of the collection funnel is located below the automatic stripping unit.

[0029] The material receiving box and the stripping and collection chamber are fastened by bolts, and are sealed by a sealing ring between them.

[0030] Preferably, a KF quick-change interface is arranged between the connecting rod and the cathode.

[0031] The present invention also provides a continuous electrolytic refining method for special metals of the special metal continuous electrolytic refining equipment according to the above technical solution, including the following steps:

[0032] The crude metal ingot is placed in the material receiving box and sent into the stripping and collection chamber. After the crude metal ingot is wrapped with a molybdenum mesh, a lifting lug for placing the anode is made at the top of the molybdenum mesh with molybdenum wire, and then the crude metal is transferred to the material placing basket.

[0033] The atmosphere in the hot furnace body is replaced with an inert gas, heated up, and the cathode is immersed in the electrolyte for electrolysis.

[0034] After electrolysis is completed, the cathode is lifted, transported to the automatic stripping unit in the stripping and collection chamber, and the product stripping and collection work is completed.

[0035] After the cathode is reinstalled into the electrolysis chamber, the electrolytic production is repeated.

[0036] Preferably, after electrolysis is completed, the connecting rod is lowered, the protruding part of the connecting rod is clamped with the dendrite dropping and collecting tooling, the dendrite dropping and collecting tooling is lifted out, the cathode is removed and placed in the dendrite dropping and collecting tooling, transported to the automatic stripping unit in the stripping and collection chamber, the dendrites on the cathode are stripped, and the dendrites in the dendrite dropping and collecting tooling are cleaned, and the product stripping and collection work is completed.

[0037] Preferably, the stripping of the dendrites on the cathode specifically includes: the cathode is clamped on the three-jaw chuck, first the stripping knife is used to strip the dendrite part until a large amount of electrolyte crystals appear, and then a special turning tool is replaced to continue stripping. The installation depth positioning accuracy of the special turning tool is within 0.1 mm.

[0038] The gap between the special turning tool and the cathode is within 0.1 mm.

[0039] Preferably, the cleaning of the dendrites in the dendrite dropping and collecting tooling specifically includes: pushing the collecting plate of the dendrite dropping and collecting tooling upward to separate it from the bracket, and cleaning the dendrites on the collecting plate.

[0040] Compared with the prior art, the special metal continuous electrolytic refining equipment of the present invention improves the structure of the anode and the stripping method of the cathode, reduces the space area of the anode, separates the heating function and the electrolysis function. During the electrolysis process, the overgrown dendrites on the cathode will not fall onto the anode, avoiding the occurrence of secondary electrolysis. Cooperating with the corresponding automatic stripping unit, the materials can be completely separated, improving the direct collection rate of the product. Tests have shown that the direct collection rate of the special metal using the equipment of the present invention can reach more than 90%. The special metal continuous electrolytic refining method of the present invention utilizes the equipment, ensures airtightness and uses an inert gas maintenance system, effectively protecting the metal from being oxidized into oxides that cannot undergo electrolysis during the electrolytic refining process, avoiding the reduction of the direct collection rate of the special metal, and the gas in the equipment will not overflow, ensuring the safety of production workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 FIG. 1 is a schematic structural diagram of the special metal continuous electrolytic refining equipment according to an embodiment of the present invention;

[0042] Figure 2 FIG. 2 is a schematic structural diagram of the heating furnace body and the anode;

[0043] Figure 3 FIG. 3 is a schematic structural diagram of the special metal continuous electrolytic refining equipment according to another embodiment of the present invention;

[0044] Figure 4 FIG. 4 is a schematic structural diagram of the dendrite dropping and collecting tooling;

[0045] Figure 5 FIG. 5 is a top view of the dendrite dropping and collecting tooling;

[0046] Figure 6 FIG. 6 is a connection structure diagram of the screw rod automatic lifting unit and the cathode; Figure 7 FIG. 7 is a schematic structural diagram of the cathode transfer unit;

[0047] Figure 8 FIG. 8 is a schematic structural diagram of the automatic stripping unit;

[0048] In the figures,

[0049] 1 is the electrolysis chamber, 2 is the stripping and collecting chamber, 3 is the heating furnace body, 4 is the anode metal plate, 5 is the material placing basket, 6 is the screw rod automatic lifting unit, 7 is the connecting rod, 8 is the cathode, 9 is the automatic stripping unit, 10 is the cathode transfer unit, 11 is the receiving box, 12 is the isolation and sealing door, 13 is the material placing basket mounting bracket, 14 is the fastening bolt, 15 is the dendrite dropping and collecting tooling, 16 is the bracket, 17 is the collecting plate, 18 is the guide rail, 19 is the automatic transfer mechanism, 20 is the cathode jaw, 21 is the positioning component, 22 is the stripping knife, 23 is the mounting bracket, 24 is the three-jaw chuck. Detailed implementation mode

[0050] To further understand the present invention, the implementation scheme of the present invention will be described below in conjunction with embodiments. However, it should be understood that these descriptions are only to further illustrate the features and advantages of the present invention, rather than a limitation on the present invention.

[0051] An embodiment of the present invention discloses a special metal continuous electrolytic refining device, as Figure 1 shown, including: an electrolysis chamber 1, a stripping and collecting chamber 2, and a material receiving box 11. The stripping and collecting chamber 2 is connected to the upper part of the electrolysis chamber 1, and an isolation and sealing door 12 is provided between the two;

[0052] A heating furnace body 3 is arranged at the bottom inside the electrolysis chamber 1, and an anode metal plate 4 is arranged at the top of the heating furnace body 3; a material placing basket 5 is connected to the anode metal plate 4; the heating furnace body 3 is insulated from the anode metal plate 4 and the material placing basket 5;

[0053] A screw rod automatic lifting unit 6 is arranged at the top of the electrolysis chamber 1, and the bottom of the screw rod automatic lifting unit 6 is connected to a cathode 8 through a connecting rod 7;

[0054] An automatic stripping unit 9 and a cathode transfer unit 10 are arranged inside the stripping and collecting chamber 2;

[0055] The cathode transfer unit 10 is arranged at the upper part of the stripping and collecting chamber 2;

[0056] The material receiving box 11 is connected to the bottom opening of the stripping and collecting chamber 2 and is arranged below the automatic stripping unit 9.

[0057] The device of the present invention is used for electrolytic refining of metals with radioactivity and easy oxidation. The whole device is in a sealed state and is filled with an inert atmosphere inside, effectively protecting the metal from being oxidized into oxides that cannot undergo electrolysis during the electrolytic refining process.

[0058] In particular, the structure of the anode and the stripping method of the cathode are improved, the space area of the anode is reduced, the heating function and the electrolysis function are separated. During the electrolysis process, the overgrown dendrites on the cathode will not fall onto the anode, avoiding the occurrence of secondary electrolysis. Cooperating with the corresponding automatic stripping unit, the materials can be completely separated, and the direct collection rate of the product is improved.

[0059] Because special metals are very precious, all products need to be collected as much as possible after electrolytic refining. An independent product stripping and collecting chamber is designed to more effectively strip the products according to the physical properties of the products after electrolysis, and the stripped products can be completely collected into a special container.

[0060] The special metal continuous electrolytic refining equipment will be described in detail according to its components below.

[0061] The special metal continuous electrolytic refining equipment includes: an electrolysis chamber 1, a stripping and collection chamber 2, and a material receiving box 11;

[0062] The stripping and collection chamber 2 is connected to the upper part of the electrolysis chamber 1, and an isolation and sealing door 12 is provided between them to ensure the sealing of the two chambers, prevent electrolyte vapor from entering the stripping and collection chamber 2, preferably fixed in the way of a window handle, effectively prevent air from entering the electrolysis chamber 1, and avoid the oxidation of special metals during the electrolysis process.

[0063] The outer wall of the electrolysis chamber 1 is preferably a shielding body to increase its radiation resistance.

[0064] According to the present invention, a heating furnace body 3 is provided at the bottom inside the electrolysis chamber 1, an anode metal plate 4 is provided at the top of the heating furnace body 3; a material placing basket 5 is connected to the anode metal plate 4; the heating furnace body 3 is insulated from the anode metal plate 4 and the material placing basket 5.

[0065] Specifically, as Figure 2 shown, the electrolysis chamber further includes: a material placing basket mounting bracket 13;

[0066] The material placing basket mounting bracket 13 is fixed on the anode metal plate 4 through fastening bolts 14;

[0067] The material placing basket 5 is suspended and installed on the material placing basket mounting bracket 13 in a circumferentially evenly distributed manner, and the material placing basket 5 does not contact the inner wall of the heating furnace body 3.

[0068] The material placing basket 5 is placed with the crude special metal to be refined. It is positively charged and can convert the crude special metal into an ionic state and enter the electrolyte. This structure is simpler, convenient for disassembly and replacement, and minimizes the space occupied by the anode in the electrolyte as much as possible, effectively preventing large dendrites from falling into the heating furnace body during electrolysis and causing difficult secondary electrolysis and recovery, and preventing some impurities with electrolysis potentials very close to that of the special metal from electrolyzing and affecting the purity of the produced special metal product.

[0069] The heating furnace body 3 contains and heats the electrolyte, plays a supporting role for the anode metal plate 4 and the material placing basket 5, but is insulated from the anode metal plate 4 and the material placing basket 5.

[0070] Preferably, a ceramic coating is provided on the contact surface between the anode metal plate 4 and the heating furnace body 3 to ensure the insulation effect between the anode metal plate 4 and the heating furnace body.

[0071] As Figure 3As shown in the figure, the special metal continuous electrolytic refining equipment of the present invention further includes: a dendrite dropping and collecting tooling 15, which is arranged in the heating furnace body 3 and is directly below the cathode 8.

[0072] As Figure 4 and Figure 5 shown in the figure, the dendrite dropping and collecting tooling 15 includes a bracket 16 and a collecting plate 17; the bracket 16 is barrel-shaped with openings at both the top and bottom, and there are 4 card slots on the upper part, which are clamped with the protruding parts of the connecting rod to place and lift the cathode, and small holes are respectively arranged at both ends of the lower opening of the bracket, which are fixed to the protruding parts on the bottom surface of the collecting plate. According to the present invention, as Figure 6 shown in the figure, a screw rod automatic lifting unit 6 is arranged at the top of the electrolysis chamber 1, and the bottom of the screw rod automatic lifting unit 6 is connected to the cathode 8 through a connecting rod 7.

[0073] Preferably, the screw rod automatic lifting unit 6 is automatically controlled by a PLC to control a stepping motor, and automatically matches the lifting height of the cathode in the electrolyte according to the pre-determined electrolysis parameters and lifting rate, so that the electrolysis process parameters are stable and optimized, and the output and quality of the electrolyzed products are guaranteed.

[0074] The cathode 8 is a component for forming refined products after electrolysis of crude special metal, and it is ensured that no chemical reaction occurs with the electrolyte during electrolysis and no impurities are introduced into the refined products. It has the characteristics of light weight, good strength and stiffness, and will not be deformed at high temperatures during electrolysis and when stripping the material after electrolysis is completed, and can be reused.

[0075] Preferably, a KF quick-change interface is arranged between the connecting rod 7 and the cathode 8, which can facilitate the removal of the cathode and the recovery of the products on the cathode.

[0076] According to the present invention, an automatic stripping unit 9 and a cathode transfer unit 10 are arranged in the stripping and collecting chamber 2;

[0077] The cathode transfer unit 10 is arranged at the upper part of the stripping and collecting chamber 2 and is used to transport the cathode 8 from the electrolysis chamber 1 to the stripping and collecting chamber 2, or to transport the cathode 8 within the stripping and collecting chamber 2;

[0078] Specifically, as Figure 7 shown in the figure, the cathode transfer unit 10 includes: a guide rail 18, an automatic transfer mechanism 19, a cathode gripper 20, and a positioning component 21;

[0079] The guide rail 18 is arranged at the upper part of the automatic stripping unit 9, and its two ends are respectively connected to the positioning component 21;

[0080] The positioning component 21 is fixed on the side wall of the stripping and collecting chamber 2 for fixing the guide rail 18 in the stripping and collecting chamber 2;

[0081] The automatic transfer mechanism 19 is movably connected to the guide rail 18, and the PLC controls the stepping motor to realize the lateral movement of the automatic transfer mechanism along the guide rail 18; after electrolysis, the cathode 8 is removed from the electrolysis chamber 1 and transferred to the stripping and collecting chamber. The moving positioning accuracy is high, the mechanical vibration during the whole process is small, and there is almost no product weight loss, and the influence on the product is within an acceptable range.

[0082] The cathode jaw 20 is connected to the lower end of the automatic transfer mechanism 19 for transporting the cathode 8.

[0083] Preferably, the cathode jaw 20 is composed of a telescopic sleeve and a jaw, and the telescopic action and the clamping action are completed by the PLC controlling the stepping motor. The cathode jaw 20 can move at multiple angles and can be telescopic, and it transports the cathode after clamping it.

[0084] The guide rail 18 is made of processed profiled steel with high precision requirements, and there is almost no mechanical vibration during the movement of the automatic transfer mechanism 19. Specifically, as Figure 8 shown, the automatic stripping unit 9 includes a stripping knife 22, a mounting bracket 23, and a three-jaw chuck 24;

[0085] The stripping knife 22 is movably connected to the mounting bracket 23 and moves horizontally left and right;

[0086] The three-jaw chuck 24 is fixedly connected to the mounting bracket 23.

[0087] Preferably, the stripping and collecting chamber 2 is made of a glove box. Some relatively complex operations can be directly completed by manual operation. Installing the cathode rod on the three-jaw chuck can be directly completed by hand, and the dendrites in the dendrite collection tooling can also be cleaned up. Transferring the cathode from the electrolysis chamber to the stripping and collecting chamber to complete the product stripping and collection work. Then, after reinstalling the cathode into the electrolysis chamber, the electrolysis production work is repeated.

[0088] According to the present invention, the receiving box 11 is connected to the bottom opening of the stripping and collecting chamber 2 and is arranged below the automatic stripping unit 6.

[0089] Preferably, a collecting funnel is further arranged in the stripping and collecting chamber 2. The bottom of the collecting funnel is correspondingly communicated with the receiving box 11, and the upper part of the collecting funnel is located below the automatic stripping unit 6;

[0090] The receiving box 11 and the stripping and collecting chamber 2 are connected by a bolt fastening connection method, and the two are sealed by a sealing ring.

[0091] The material receiving box 11 can also be used to transport the crude metal ingot as the anode into the entire device.

[0092] The steps of the special metal continuous electrolytic refining device of the present invention are as follows:

[0093] Place the crude metal on the charging basket, replace the atmosphere in the heating furnace body and then raise the temperature, lower the cathode to start electrolysis. After each electrolysis is completed, remove the cathode, transfer the cathode from the electrolysis chamber to the stripping and collection chamber to complete the product stripping and collection work. Then, after reinstalling the cathode into the electrolysis chamber, repeat the electrolysis production work. Since the electrolyte has certain corrosiveness, the selected manufacturing materials should not only have sufficient strength but also sufficient corrosion resistance, such as nickel-based Hastelloy, austenitic stainless steel, etc., to prevent the shell from being corroded and reducing the service life of the equipment. The charging basket for containing the electrolyte needs to be heat-resistant and corrosion-resistant. The action repeat positioning accuracy of the automatic stripping unit is less than 0.05 mm, the torsion angle of the cathode rod during stripping is less than 3°, and there is no peeling phenomenon during the stripping process, so that the materials can be completely separated. A special collection unit is made according to the properties of the materials after stripping to collect the exfoliated dendrites as much as possible.

[0094] The special metal continuous electrolytic refining device of the present invention is a fully enclosed device with good airtightness, capable of withstanding a certain amount of radiation, effectively preventing the mutual infiltration of the atmosphere inside and outside the device, preventing the electrolytic refining products from oxidizing and falling off, and protecting the staff from being affected by the atmosphere in the furnace body. The device of the present invention can automatically realize electrolytic refining and the collection of dendrites after refining, the working links are coordinated, the process is smooth, the direct recovery rate meets the requirements of batch production, and all parameters during the electrolysis process have reached the standard.

[0095] The embodiment of the present invention also discloses a special metal continuous electrolytic refining method for the special metal continuous electrolytic refining device described in the above technical solution, including the following steps:

[0096] Place the crude metal ingot in the material receiving box and send it into the stripping and collection chamber. After wrapping the crude metal ingot with molybdenum mesh, make a lifting lug for placing the anode at the top of the molybdenum mesh with molybdenum wire, and then transfer the crude metal to the charging basket.

[0097] Replace the atmosphere in the hot furnace body with an inert gas, raise the temperature, and immerse the cathode in the electrolyte for electrolysis.

[0098] After electrolysis is completed, lift the cathode and transport the cathode to the automatic stripping unit in the stripping and collection chamber to complete the product stripping and collection work.

[0099] After reinstalling the cathode into the electrolysis chamber again, repeat the electrolysis production.

[0100] The special metal continuous electrolytic refining method of the present invention is completed by using the above device.

[0101] The following is a detailed description according to the steps:

[0102] First step: The crude metal ingot is placed in the receiving box and sent into the stripping and collecting chamber. After wrapping the crude metal ingot with a molybdenum mesh, lugs for placing the anode are made at the top of the molybdenum mesh with molybdenum wire, and then the crude metal is transferred to the material basket;

[0103] Among them, the cathode transfer unit is used to transfer the crude metal to the material basket;

[0104] Second step: Replace the atmosphere in the hot furnace body with an inert gas, heat up, and immerse the cathode in the electrolyte for electrolysis;

[0105] Third step: After electrolysis is completed, lift the cathode, transport the cathode to the automatic stripping unit in the stripping and collecting chamber, and complete the stripping and collecting work of the product;

[0106] Preferably, after electrolysis is completed, lower the connecting rod. The protruding part of the connecting rod is clamped with the dendrite dropping and collecting tooling, lift out the dendrite dropping and collecting tooling, place the cathode in the dendrite dropping and collecting tooling after removing it, and transport it to the automatic stripping unit in the stripping and collecting chamber to strip the dendrites on the cathode and clean the dendrites in the dendrite dropping and collecting tooling, thus completing the stripping and collecting work of the product.

[0107] The stripping of the dendrites on the cathode specifically includes: clamping the cathode on the three-jaw chuck, first using a stripping knife to strip the dendrite part until a large amount of electrolyte crystals appear, and then replacing the special turning tool to continue stripping. The installation depth positioning accuracy of the special turning tool is within 0.1 mm,

[0108] The gap between the special turning tool and the cathode is within 0.1 mm.

[0109] The cleaning of the dendrites in the dendrite dropping and collecting tooling specifically includes: pushing the collecting plate of the dendrite dropping and collecting tooling upward to separate it from the bracket, and cleaning the dendrites on the collecting plate.

[0110] Fourth step: After reinstalling the cathode into the electrolysis chamber, repeat the electrolysis production. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0111] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. Various modifications to these embodiments will be readily apparent to those 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. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A special metal continuous electrolytic refining equipment, Characterized in that, Comprising: An electrolysis chamber, a stripping and collecting chamber and a receiving box. The stripping and collecting chamber is connected to the upper part of the electrolysis chamber, and an isolation and sealing door is arranged between the two; A heating furnace body is arranged at the bottom inside the electrolysis chamber, and an anode metal plate is arranged at the top of the heating furnace body; A material placing basket is connected to the anode metal plate; The heating furnace body is insulated from the anode metal plate and the material placing basket; A screw rod automatic lifting unit is arranged at the top of the electrolysis chamber, and the bottom of the screw rod automatic lifting unit is connected to the cathode through a connecting rod; An automatic stripping unit and a cathode transfer unit are arranged inside the stripping and collecting chamber; The cathode transfer unit is arranged at the upper part of the stripping and collecting chamber; The receiving box is connected to the bottom opening of the stripping and collecting chamber and is arranged below the automatic stripping unit; The cathode transfer unit includes: a guide rail, an automatic transfer mechanism, a cathode gripper, and a positioning component; The guide rail is arranged at the upper part of the automatic stripping unit, and both ends of the guide rail are respectively connected to the positioning component; The positioning component is fixed on the side wall of the stripping and collecting chamber for fixing the guide rail inside the stripping and collecting chamber; The automatic transfer mechanism is movably connected to the guide rail, and the PLC controls the approaching motor to realize the lateral movement of the automatic transfer mechanism along the guide rail; The cathode gripper is connected to the lower end of the automatic transfer mechanism for transporting the cathode.

2. The special metal continuous electrolytic refining equipment according to claim 1, Characterized in that, Further comprising: A dendrite dropping and collecting tooling, which is arranged inside the heating furnace body and is located directly below the cathode.

3. The special metal continuous electrolytic refining equipment according to claim 2, Characterized in that, The dendrite dropping and collecting tooling includes a bracket and a collecting plate. The bracket is barrel-shaped with openings at both the top and bottom. There are 4 card slots at the upper part, which are clamped with the protruding parts of the connecting rod to realize the placement and lifting of the cathode. Small holes are respectively arranged at both ends of the lower opening of the bracket and are fixed to the protruding parts on the bottom surface of the collecting plate.

4. The special metal continuous electrolytic refining equipment according to claim 1, Characterized in that, Further comprising: A material placing basket mounting bracket; The material placing basket mounting bracket is fixed on the anode metal plate through fastening bolts; The material placing baskets are suspended and installed on the material placing basket mounting bracket in a circumferentially evenly distributed manner, and the material placing baskets do not contact the inner wall of the heating furnace body.

5. The special metal continuous electrolytic refining equipment according to claim 4, Characterized in that, A ceramic coating is arranged on the contact surface between the anode metal plate and the heating furnace body.

6. The special metal continuous electrolytic refining equipment according to claim 1, Characterized in that, The outer wall of the electrolysis chamber is a shielding body.

7. The special metal continuous electrolytic refining equipment according to claim 1, Characterized in that, The cathode gripper is composed of a telescopic sleeve and a gripper, and the telescopic action and the gripping action are completed by the PLC controlling the stepping motor.

8. The special metal continuous electrolytic refining equipment according to claim 1, Characterized in that, The automatic stripping unit includes a stripping knife, a mounting bracket, and a three-jaw chuck; The stripping knife is movably connected to the mounting bracket and moves horizontally left and right; The three-jaw chuck is fixedly connected to the mounting bracket.

9. The continuous electrolytic refining equipment for special metals according to claim 1, It is characterized in that The stripping material collection chamber is made of a glove box.

10. The continuous electrolytic refining equipment for special metals according to claim 1, It is characterized in that A collecting funnel is also provided in the stripping and collecting chamber, the bottom of the collecting funnel is correspondingly connected to the material receiving box, and the upper part of the collecting funnel is located below the automatic stripping unit; The material receiving box and the stripping material collecting chamber are connected by bolt fastening, and the two are sealed by a sealing ring.

11. The continuous electrolytic refining equipment for special metals according to claim 1, It is characterized in that A KF quick-change interface is provided between the connecting rod and the cathode.

12. A method for continuous electrolytic refining of special metals using the continuous electrolytic refining equipment for special metals according to any one of claims 1 to 11, It is characterized in that The following steps are involved: The crude metal ingot is placed in a receiving box and sent to a stripping and collecting chamber. After the crude metal ingot is wrapped with a molybdenum mesh, a hanging ear for placing the anode is made on the top of the molybdenum mesh with molybdenum wire, and then the crude metal is transferred to a material basket; The atmosphere in the hot furnace is replaced with an inert gas, the temperature is raised, and the cathode is immersed in the electrolyte for electrolysis; After the electrolysis is completed, the cathode is lifted and transported to the automatic stripping unit in the stripping and collecting chamber to complete the product stripping and collecting work; After the cathode is reinstalled in the electrolysis chamber, the electrolysis production is repeated.

13. The method for continuous electrolytic refining of special metals according to claim 12, It is characterized in that After the electrolysis is completed, the connecting rod is lowered, and the protruding part of the connecting rod is engaged with the dendrite falling and collecting tooling, the dendrite falling and collecting tooling is lifted out, the cathode is removed and placed in the dendrite falling and collecting tooling and transported to the automatic stripping unit in the stripping and collecting chamber, the dendrites on the cathode are stripped and the dendrites in the dendrite falling and collecting tooling are cleaned, and the product stripping and collection work is completed.

14. The method for continuous electrolytic refining of special metals according to claim 13, It is characterized in that The stripping of the dendrites on the cathode specifically includes: the cathode is clamped on a three-jaw chuck, a stripping knife is first used to strip the dendrite part until a large amount of electrolyte crystals appear, and a special turning tool is replaced to continue stripping, and the installation depth positioning accuracy of the special turning tool is within 0.1 mm, The gap between the special turning tool and the cathode is within 0.1 mm.

15. The method for continuous electrolytic refining of special metals according to claim 13, It is characterized in that Cleaning the dendrites in the dendrite falling collection tool specifically includes: pushing the collection plate of the dendrite falling collection tool upward to separate it from the bracket, and cleaning the dendrites on the collection plate.

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