Movable radioactive metal smelting system and using method thereof

Abstract

The invention discloses a movable radioactive metal smelting system and a using method thereof, the movable radioactive metal smelting system comprises a smelting module, the smelting module comprises a smelting layer box body, a smelting furnace and a feeding device, and the smelting layer box body is in a container form; an opening is formed in the smelting layer box body, and a box door is arranged at the opening of the smelting layer box body; the tail gas treatment module is located on one side of the smelting module and comprises a tail gas treatment box body and a tail gas filtering device, the tail gas treatment box body is in a container form, the tail gas filtering device is arranged in the tail gas treatment box body, an opening is formed in the tail gas treatment box body, and a box door is arranged at the opening of the tail gas treatment box body; and the steel ingot transferring module is used for casting the molten metal smelted in the smelting furnace into the cast ingot to form a steel ingot and transferring the steel ingot. Through the innovative modular design, rapid assembly, disassembly and movement of the system are achieved, and the flexibility and mobility of the system are remarkably improved. Automatic control and remote operation reduce the risk that operators contact radioactive substances, and the safety of operation is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of radioactive metal processing, and in particular to a movable radioactive metal smelting system and a use method thereof. Background Art

[0002] A large amount of radioactive scrap metal will be generated during the decommissioning of old nuclear facilities and the operation of nuclear power plants in my country. Smelting and decontamination is a relatively mature technology for low-radioactive scrap metal. Through smelting, the content of natural radionuclides can be reduced. The products formed by smelting can be directly released or recycled within the nuclear industry system according to their radiation levels. While saving huge processing and disposal costs for related operating units, it can also save a lot of radioactive waste processing and disposal space, achieving multiple economic, social and environmental benefits.

[0003] The general radioactive scrap metal smelting system includes a smelting furnace and an exhaust gas treatment device. The smelting furnace is fixedly installed in a specific location for metal smelting, and the exhaust gas treatment device is usually fixedly connected to the smelting furnace. The existing smelting system can only be carried out in a fixed place. It is time-consuming and labor-intensive to transfer and redeploy the system between different locations, and the flexibility of use is poor. In addition, in the existing smelting system, manual loading is generally used, which increases the risk of operators being exposed to radioactive materials, and the labor intensity of operators is relatively high. Summary of the invention

[0004] One of the purposes of the present invention is to provide a mobile radioactive metal smelting system to solve the problems of poor deployment flexibility and high dependence on manual labor in existing radioactive scrap metal smelting systems.

[0005] The second purpose of the present invention is to provide a method for using a mobile radioactive metal smelting system to solve the problems of poor deployment flexibility and high dependence on manual labor in existing radioactive scrap metal smelting systems.

[0006] To solve the above problems, one of the purposes of the present invention is achieved as follows:

[0007] A movable radioactive metal smelting system of the present invention comprises:

[0008] A smelting module, wherein the smelting module comprises a smelting layer box, a smelting furnace, and a feeding device for feeding materials into the smelting furnace, wherein the smelting layer box is in the form of a container, and the smelting furnace is arranged in the smelting layer box; an opening is arranged on the smelting layer box, and a box door is arranged at the opening of the smelting layer box;

[0009] A tail gas treatment module is located on one side of the smelting module, and the tail gas treatment module includes a tail gas treatment box and a tail gas filtering device. The tail gas treatment box is in the form of a container, and the tail gas filtering device is arranged in the tail gas treatment box. An opening is arranged on the tail gas treatment box, and a box door is arranged at the opening of the tail gas treatment box;

[0010] The ingot transfer module is used to cast the molten metal from the smelting furnace into an ingot to form a steel ingot, and then transfer the ingot.

[0011] Among them, the steel ingot transfer module is located on a side of the smelting module that is different from the exhaust gas treatment module. The steel ingot transfer module includes an ingot transfer box, an ingot transfer vehicle, and an ingot pallet. The steel ingot transfer box is in the form of a container, and the ingot transfer vehicle and the ingot pallet are both located in the steel ingot transfer box.

[0012] Among them, the feeding device includes a scrap metal barrel, a scrap metal transfer vehicle, and the feeding crane module; the scrap metal barrel is placed on the scrap metal transfer vehicle, and the feeding crane module moves the scrap metal barrel to above the smelting furnace.

[0013] Among them, the loading crane module includes a smelting crane box and a smelting crane. The smelting crane box is arranged above the smelting module, the bottom of the smelting crane box is connected to the upper part of the smelting module, the smelting crane is hoisted on the upper part of the smelting crane box, and the smelting crane box is a container-type structure.

[0014] The movable radioactive metal smelting system further comprises an accessory module, which is in the form of a container and in which a power distribution cabinet and a heat exchange station are arranged.

[0015] The movable radioactive metal smelting system further comprises a control room module for controlling the operation of the system, and the control room module is a box-type structure.

[0016] Among them, the ingot transfer module includes an ingot transfer platform, one end of which extends to the opening of the smelting layer box, and the ingot transfer platform includes a straight track platform fixedly arranged in the ingot transfer box, and a flip track platform rotatably connected to one side of the straight track platform, and the flip track platform is a disc structure, the radial direction of the flip track platform is horizontally arranged, and the axial direction of the flip track platform is vertically arranged.

[0017] Wherein, the exhaust gas filtering device includes a bag filter, at least one purification filter assembly, and a fan. The inlet end of the bag filter is connected to the smelting module, at least one purification filter assembly is connected to the outlet end of the bag filter through an air duct, and the outlet end of the purification filter assembly is connected to at least one fan.

[0018] The second object of the present invention is achieved in this way:

[0019] A method for using a movable radioactive metal smelting system of the present invention uses the above-mentioned movable radioactive metal smelting system, and the method for using comprises the following steps:

[0020] a. Assemble and connect the smelting module, the tail gas treatment module and the steel ingot transfer module;

[0021] b. Opening the box door on the smelting layer box, transporting the radioactive scrap metal into the smelting layer box, closing the box door, feeding the scrap metal into the feeding port of the smelting furnace through a feeding device, and starting the smelting furnace to smelt the scrap metal after the feeding is completed;

[0022] c. The molten metal after smelting in the smelting furnace is cast into the steel ingot transfer module, and the molten metal after smelting in the smelting furnace is cast into the ingot through the steel ingot transfer module to form the steel ingot, and then transferred out;

[0023] d. The exhaust gas treatment module is used to purify the fume generated by smelting scrap metals in the smelting module so that the fume meets the emission standards before being discharged.

[0024] The beneficial effects of the present invention are:

[0025] A movable radioactive metal smelting system of the present invention comprises at least a smelting module, an exhaust gas treatment module, and an ingot transfer module, and is composed of a plurality of independent modules, each of which is responsible for a specific function, such as smelting, exhaust gas treatment, and ingot transfer. This layout allows for rapid deployment and reconfiguration as needed. The system of the present invention places the smelting module in a central position, and other modules are arranged around it to optimize the workflow. Each module is rationally laid out according to the function and operation process to minimize space occupancy and maximize operational efficiency. The transportation path of the scrap metal barrel and the transfer path of the ingot of the present invention are clearly planned, reducing cross contamination and operational complexity. The present invention fully considers the flow paths of materials and personnel to ensure that the movement of operators and materials is both safe and efficient. The modular integrated design of the present invention improves the reliability of the system and the ease of operation.

[0026] A mobile radioactive metal smelting system of the present invention, with its high efficiency, safety and modularity, provides an innovative solution for the treatment of radioactive contaminated metals and has a wide range of applications. The system of the present invention can quickly process radioactive metal wastes during the decommissioning of nuclear facilities, reduce the volume of wastes, and facilitate subsequent storage or treatment; in the defense and military fields, the system can be used to process and recycle radioactive metal parts in military equipment such as nuclear submarines and nuclear-powered aircraft carriers. In addition, it also shows great potential in nuclear waste treatment and radioactive metal recovery, which can promote the reuse of resources and reduce environmental pollution. In addition, the system of the present invention can also provide commercial on-site treatment services for enterprises that need to treat radioactive metal wastes, supporting enterprises to achieve effective management of radioactive wastes and recycling of resources while ensuring safety and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the smelting module of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the scrap metal barrel of the present invention;

[0031] Figure 4 is a side view of the scrap metal barrel of the present invention;

[0032] Figure 5 yes Figure 4 A top view of

[0033] Figure 6 yes Figure 4 AA section view;

[0034] Figure 7 It is a schematic diagram of the structure of a smelting furnace;

[0035] Figure 8 This is the appearance diagram of the exhaust gas treatment module;

[0036] Fig. 9 is a schematic diagram of the internal structure of the exhaust gas treatment module;

[0037] Fig.10 is a schematic diagram of the structure of a purification filter assembly;

[0038] Fig.11 It is a structural schematic diagram of the steel ingot transfer module;

[0039] Fig.12 yes Fig.11 A top view of

[0040] Fig.13 It is a schematic diagram of the structure of the accessory module.

[0041] Description of Reference Numerals

[0042] 1. Smelting module; 11. Smelting layer box; 111. Shielding baffle; 112. Smelting chamber; 113. Maintenance channel; 12. Smelting furnace; 121. Diversion port; 122. Upper cover; 123. Furnace body; 13. Scrap metal barrel; 131. Barrel shell; 1311. Slide; 1312. Guide part; 132. Barrel bottom plate; 133. Lifting rope; 134. Bottom plate locking mechanism; 1341. Bottom support plate; 1342. Press rod; 1343. Pressing part; 14. Scrap metal transfer vehicle; 15. Loading crane module; 151. Smelting crane box; 152. Smelting crane; 16. Scrap metal transfer track platform; 17. Scrap metal outer track platform; 181. Slag net; 182. Slag bucket;

[0043] 2. Exhaust treatment module; 21. Exhaust treatment box; 211. Upper cover; 22. Purification track platform; 23. Bag filter; 24. Purification filter assembly; 241. Filter housing; 242. Primary filter element; 243. High-efficiency filter element; 25. Fan; 26. Air duct; 271. Exhaust treatment crane box; 272. Exhaust treatment crane; 273. Upper shielding plate; 28. Exhaust treatment waste barrel;

[0044] 3. Ingot transfer module; 31. Ingot transfer box; 311. Ingot discharge port; 32. Ingot transfer vehicle; 33. Ingot tray; 34. Ingot transfer platform; 341. Straight track platform; 342. Turning track platform; 343. Ingot internal transfer platform;

[0045] 4. Box door; 41. Scrap metal material door; 42. Ingot material door; 5. Changing room; 6. Accessory module; 61. Power distribution cabinet; 62. Heat exchange station; 7. Control room module. DETAILED DESCRIPTION

[0046] The technical scheme in the embodiment of the present invention is described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0047] Embodiment 1:

[0048] like Figure 1As shown, a mobile radioactive metal smelting system of the present invention comprises a smelting module 1, an exhaust gas treatment module 2, and a steel ingot transfer module 3. With the smelting module 1 as the center, the exhaust gas treatment module 2 and the steel ingot transfer module 3 are distributed around the smelting module 1, which is convenient for layout and reasonable use of space. In this embodiment, the exhaust gas treatment module 2 and the steel ingot transfer module 3 are located on opposite sides of the smelting module 1.

[0049] like Figure 1-Figure 6 As shown, the smelting module 1 includes a smelting layer box 11, a smelting furnace 12, and a feeding device for feeding materials into the smelting furnace 12. The smelting layer box 11 is in the form of a container, and the smelting furnace 12 is arranged in the smelting layer box 11. The feeding device includes a scrap metal barrel 13, a scrap metal transfer vehicle 14, and a feeding crane module 15; the scrap metal barrel 13 is placed on the scrap metal transfer vehicle 14, and the feeding crane module 15 transfers the scrap metal barrel 13 to the top of the smelting furnace 12. Among them, the feeding crane module 15 includes a smelting crane box 151 and a smelting crane 152. The smelting crane box 151 is arranged above the smelting module 1, the bottom of the smelting crane box 151 is connected to the upper part of the smelting module 1, and the smelting crane 152 is hoisted on the upper part of the smelting crane box 151. The smelting crane box 151 is a container-type structure. In this embodiment, the bottom end of the smelting crane box 151 is open, and the top end of the smelting layer box 11 is open. The bottom opening of the smelting crane box 151 is connected with the top opening of the smelting layer box 11 to form a closed box. A track parallel to the length direction of the smelting crane box 151 is set on the upper part of the smelting crane box 151. In this embodiment, the track is made of C-shaped steel, the opening of the C-shaped steel is inward, and the C-shaped steel constitutes the top structure of the frame of the smelting crane box 151. The C-shaped steel can be used as a part of the frame of the smelting crane box 151 and as the track of the smelting crane 152, which reduces the weight and complexity of the system. The axial direction of the track of the smelting crane 152 is horizontal and perpendicular to the axial direction of the track of the scrap metal transfer track platform 16. The smelting crane 152 can adopt the existing crane structure.

[0050] like Figure 1 , Fig.11 As shown, an opening is provided on the smelting layer box 11, and a box door 4 is provided at the opening of the smelting layer box 11. In this embodiment, two openings are provided on one side of the smelting layer box 11 connected to the ingot transfer module, and the two openings are used as the entrance and exit of the smelting layer box 11 respectively. Box doors 4 are provided at the entrance and the exit, and the box door 4 can be a rolling door structure. The entrance of the smelting layer box 11 is farther away from the smelting furnace 12 than the exit.

[0051] like Figure 2As shown, the number of the scrap metal barrels 13 is one or more, and the number of the scrap metal barrels 13 can be selected according to the scrap metal processing needs. In this embodiment, the number of the scrap metal barrels 13 is multiple. The scrap metal barrels 13 are placed on the scrap metal transfer vehicle 14, and a scrap metal transfer track platform 16 for cooperating with the scrap metal transfer vehicle 14 is provided in the smelting layer box 11. The upper part of the scrap metal transfer track platform 16 is provided with a track that cooperates with the wheels of the metal transfer vehicle 14. Further, the scrap metal transfer track platform 16 extends from the entrance of the smelting layer box 11 to the inside of the smelting layer box 11, and the axial direction of the track of the scrap metal transfer track platform 16 is parallel to the width direction of the smelting layer box 11.

[0052] like Figure 3-Figure 6As shown, further, the scrap metal barrel 13 includes a barrel housing 131, a barrel bottom plate 132, a hanging rope 133, and a bottom plate locking mechanism 134 for adjusting the opening and closing of the barrel bottom plate 132. The top and bottom ends of the barrel housing 131 are both open, and the hanging rope 133 is arranged at the upper part of the barrel housing 131. In order to facilitate lifting, the hanging rope 133 can be a rigid hanging rope. There are two barrel bottom plates 132, and the two barrel bottom plates 132 are in a split structure. One end of the barrel bottom plate 132 is hinged to the corresponding side of the barrel housing 131, and the other end is a free end. The free end of the barrel bottom plate 132 is butt-jointed with the free end of another barrel housing 131. A limiting portion for limiting the barrel bottom plate 132 in a horizontal position is provided in the barrel housing 131, which can prevent the barrel bottom plate 132 from continuing to move upward after docking, so that it can ensure that the barrel bottom plate 132 plays the role of a bottom plate for closing the barrel housing 131 after being in a horizontal position. A conical guide portion 1312 that gradually shrinks from top to bottom is integrally formed on the inner circumference of the barrel housing 131, which can make the scrap metal material tilt smoothly along the guide portion 1312 to avoid material accumulation in the barrel. The bottom of the guide portion 1312 is a limiting portion for limiting the barrel bottom plate 132 in a horizontal position, and the guide portion 1312 is located above the barrel bottom plate 132. The inner diameter of the bottom end of the guide portion 1312 is smaller than the outer diameter of the barrel bottom plate 132, which can prevent the barrel bottom plate 132 from continuing to rotate upward after rotating upward to the horizontal direction. Guide posts are fixedly arranged on opposite sides of the barrel bottom plate 132 near the free end, and arc-shaped slide grooves 1311 for sliding with the guide posts are arranged at the lower part of the corresponding side of the barrel housing 131. The radius of the circumference of the arc-shaped slide groove 1311 is consistent with the distance between the guide posts and the hinged end of the barrel bottom plate 132. The bottom plate locking mechanism 134 includes a bottom support plate 1341 and a pressure rod 1342 for supporting the bottom of the two barrel bottom plates 132. The number of the bottom plate locking mechanism 134 is two groups, and the two groups of bottom plate locking mechanisms 134 are respectively arranged on the corresponding sides of the slide groove 1311. One axial side of the bottom support plate 1341 is located inside the barrel housing 131, and the other axial side of the bottom support plate 1341 is located outside the barrel housing 131. The outer side of the bottom support plate 1341 is hinged to the outer side of the barrel housing 131, and the length of the bottom support plate 1341 outside the hinge point is less than the length inside. A pressing portion 1343 is integrally formed on the upper part of the pressure rod 1342, and the upper part of the pressing portion 1343 is hinged to the mounting plate fixedly arranged on the barrel shell 131, and the bottom of the pressing portion 1343 is hinged to the side of the bottom supporting plate 1341 located outside the barrel shell 131, and the hinge point of the upper part of the pressing portion 1343 is farther away from the barrel shell 131 than the hinge point of the bottom supporting plate 1341. In this way, when the pressure rod 1342 rotates outward to make the bottom of the pressing portion 1343 separate from the bottom supporting plate 1341, the part of the bottom supporting plate 1341 located in the barrel shell 131 rotates downward under the action of gravity, and the barrel bottom plate 132 loses the supporting effect of the bottom supporting plate 1341 and rotates downward, thereby opening the barrel shell 131 and allowing the scrap metal material to fall smoothly.

[0053] like Figure 2 As shown, a slag bucket 182 and a slag scooping net 181 are also provided in the smelting layer box 11 . The slag bucket 182 and the slag scooping net 181 are located on one side of the smelting furnace 12 , and the slag bucket 182 and the slag scooping net 181 are close to the shielding partition 111 .

[0054] like Figure 1 , Figure 11-13 As shown, the ingot transfer module 3 is used to cast the molten metal from the smelting furnace 12 into the ingot to form the ingot and transfer it. The ingot transfer module 3 is located on the side of the smelting module 1 that is different from the tail gas treatment module 2. In this embodiment, the ingot transfer module 3 is located on the side of the smelting module 1 that is opposite to the tail gas treatment module 2. The ingot transfer module 3 includes an ingot transfer box 31, an ingot transfer vehicle 32, and an ingot tray 33. The ingot transfer box 31 is in the form of a container, and the top of the ingot transfer box 31 is closed. The ingot transfer vehicle 32 and the ingot tray 33 are both located in the ingot transfer box 31. The ingot transfer module 3 also includes an ingot transfer platform 34, one end of which extends to the opening of the smelting layer box 11, which can be the outlet of the smelting layer box 11. The ingot transfer platform 34 includes a straight track platform 341 fixedly arranged in the ingot transfer box 31, and a flip track platform 342 rotatably connected to one side of the straight track platform 341. The flip track platform 342 is a disc structure, and the radial direction of the flip track platform 342 is horizontally arranged, and the axial direction of the flip track platform 342 is vertically arranged. Further, tracks are arranged on both the straight track platform 341 and the flip track platform 342, and the side of the track of the straight track platform 341 close to the flip track platform 342 extends to the corresponding side of the straight track platform 341 and is connected to the outside. The axial sides of the track on the flip track platform 342 extend to the outside of the corresponding side of the flip track platform 342. In this way, the flip track platform 342 can be rotated so that the track on it docks with the track of the straight track platform 341 to form a smooth track. The ingot transfer platform also includes an ingot transfer platform 343, which is arranged in the smelting layer box 11 and is located on the metal liquid casting side of the smelting furnace 12. Further, one axial end of the ingot transfer platform 343 extends to the outlet of the smelting furnace 12, and a track is arranged on the ingot transfer platform 343. One end of the track of the ingot transfer platform 343 close to the outlet of the smelting furnace 12 extends to the outer side of the corresponding end of the ingot transfer platform 343, so that the flip track platform 342 can rotate so that the track on it can dock with the track of the ingot transfer platform 343 to form a smooth track. The flip track platform 342 is located between the straight track platform 341 and the ingot transfer platform 343, and is used to realize the connection between the two, saving space. The ingot transfer vehicle 32 cooperates with the tracks on the straight track platform 341, the flip track platform 342, and the ingot transfer platform 343.

[0055] like Fig.11 , Fig.12 As shown, the ingot tray 33 is located on the side of the flip track platform 342 away from the smelting module 1, and the ingot transfer box 31 is provided with an ingot discharge port 311 on the side opposite to the smelting module 1, and the ingot tray 33 is located at the ingot discharge port 311. In this embodiment, a through opening is provided at the outlet of the smelting layer box 11 of the ingot transfer box 31, and the box door 4 at the outlet of the smelting layer box 11 is provided at the through opening of the ingot transfer box 31, and the box door 4 can be in the form of a rolling shutter door.

[0056] In order to further reduce the risk of operators being exposed to radioactivity, a partition is provided on the steel ingot transfer box 31, which separates the steel ingot transfer platform 34 and the scrap metal transfer track platform 16 into two channels, which are not connected to each other and are two independent channels. A scrap metal outer track platform 17 is provided on the side of the steel ingot transfer box 31 that is connected to the scrap metal transfer track platform 16, and the scrap metal outer track platform 17 is docked with the scrap metal transfer track platform 16. A through opening is provided at the corresponding part of the steel ingot transfer box 31 to the scrap metal outer track platform 17, which is opposite to and connected to the entrance of the smelting layer box 11, and the box door 4 at the entrance of the smelting layer box 11 is installed at the through opening of the steel ingot transfer box 31. The box doors 4 at the entrance and exit of the smelting layer box 11 are installed at the corresponding through openings of the steel ingot transfer box 31 in order to correspond to the feeding side and to install the box door 4 on the outside of the smelting layer box 11. For the sake of clarity of description, the box door 4 located at the entrance of the smelting layer box 11 is called a scrap metal material door 41 , and the box door 4 located at the exit of the smelting layer box 11 is called a steel ingot material door 42 .

[0057] For the convenience of operators and to reduce radiation risks, a dressing room 5 is provided on the side of the steel ingot transport box 31 opposite to the scrap metal outer track platform 17. The dressing room 5 is a box structure, and the dressing room 5 is connected to the corresponding side of the steel ingot transport box 31. To further shield radiation, a shielding door (not shown) can be provided at the connection. A through opening is provided on the side of the dressing room 5 opposite to the steel ingot transport box 31, and a shielding door (not shown) is provided there.

[0058] In order to facilitate the operating personnel to avoid contact with the inside of the smelting layer box 11 when repairing the loading crane module 5 of the smelting module 1, a shielding partition 111 is arranged in the smelting layer box 11, and the shielding partition 111 divides the smelting layer box 11 into a smelting chamber 112 and a maintenance passage 113. The top of the shielding partition 111 is connected to the top of the smelting crane box 151, and the entrance of the maintenance passage 113 is close to the locker room 5. A staircase is arranged in the maintenance passage 113, and the staircase extends to the lower part of the smelting crane box 151. A through opening is arranged at a position of the smelting crane box 151 corresponding to the staircase, and a shielding door is arranged at the through opening.

[0059] like Figure 1 , Figure 8-Figure 10 As shown, the exhaust gas treatment module 2 is located on one side of the smelting module 1, and the exhaust gas treatment module 2 includes an exhaust gas treatment box 21 and an exhaust gas filtering device. The exhaust gas treatment box 21 is in the form of a container, and the exhaust gas filtering device is arranged in the exhaust gas treatment box 21. An opening is arranged on the exhaust gas treatment box 21, and a box door 4 is arranged at the opening of the exhaust gas treatment box 21, and the opening corresponds to the scrap metal transfer track platform 16. A purification track platform 22 is arranged at a position corresponding to the scrap metal transfer track platform 16 in the exhaust gas treatment box 21, and a track is arranged on the purification track platform 22, and the track of the purification track platform 22 is connected with the track of the scrap metal transfer track platform 16 to form a smooth track.

[0060] The exhaust gas filtering device includes a bag filter 23, at least one purification filter assembly 24, and a fan 25. The inlet end of the bag filter is connected to the smelting module 1, and at least one purification filter assembly 24 is connected to the outlet end of the bag filter 23 through the air duct 26. The outlet end of the purification filter assembly 24 is connected to at least one fan 25. In this embodiment, the inlet end of the bag filter 23 is connected to the smelting chamber in the smelting layer box 11, and is used to suck the smoke in the smelting chamber for filtering. The purification filter assembly 24 is provided to enhance the filtering effect, and a suitable filter form can be selected according to actual needs. The purification filter assembly 24 of the present invention includes a filter housing 241, and a primary filter element 242 and a high-efficiency filter element 243 arranged in the filter housing 241. The filter housing 241 has an inlet and an outlet. The primary filter element 242 and the high-efficiency filter element 243 are arranged in the filter housing 241 along the direction from the inlet to the outlet. The number of the primary filter element 242 and the high-efficiency filter element 243 can be selected according to needs, and the number can be one or more, or not installed. In this embodiment, the number of the primary filter element 242 is one, and the number of the high-efficiency filter elements 243 is three.

[0061] The exhaust gas treatment module 2 also includes an exhaust gas treatment crane module, which includes an exhaust gas treatment crane box 271 and an exhaust gas treatment crane 272. The exhaust gas treatment crane box 271 is in the form of a container, the bottom of the exhaust gas treatment crane box 271 is open, and the top of the exhaust gas treatment box 21 is closed. The exhaust gas treatment crane box 271 is arranged on the top of the exhaust gas treatment box 21, and a through opening is opened on the top of the exhaust gas treatment box 21, and an upper cover plate 211 is arranged at the through opening. The structure of the exhaust gas treatment crane box 271 can refer to the structure of the smelting crane box 151. The exhaust gas treatment crane 272 is slidably connected to the upper part of the exhaust gas treatment crane box 271.

[0062] In this embodiment, in order to reduce the weight of the entire system without affecting the radiation protection and to facilitate maintenance, the exhaust gas treatment crane box 271 and the smelting crane box 151 are arranged side by side, and the connection between the exhaust gas treatment crane box 271 and the smelting crane box 151 is connected. A vertical upper shielding plate 273 is arranged on the side of the exhaust gas treatment crane box 271 close to the maintenance passage 113, and a shielding door is also arranged on the upper shielding plate 273. For the sake of aesthetics, the upper shielding plate 273 and the shielding partition 111 can be placed on the same vertical plane.

[0063] The mobile radioactive metal smelting system also includes an accessory module 6, which is in the form of a container, and a power distribution cabinet 61 and a heat exchange station 62 are arranged in the accessory module 6. The accessory module 6 includes an accessory module box, a power distribution cabinet, and a heat exchange station, which are separated from the smelting area, so as to avoid the power distribution cabinet and the heat exchange station being irradiated, which may cause the problem of unstable system operation.

[0064] The mobile radioactive metal smelting system further includes a control room module 7 for controlling the operation of the system, and the control room module 7 is a box-type structure. The control room module 7 includes a control module box and a control operation table, which separates the operation space from the smelting space to prevent personnel from being irradiated.

[0065] In the present invention, the scrap metal barrel includes a barrel housing 131, a chute 1311, a barrel bottom plate 132, a hanging rope 133, and a bottom plate locking mechanism 134, which can realize rapid unloading. Figure 7 As shown, the smelting furnace 12 includes a guide port 121, an upper cover 122, a furnace body 123 and other auxiliary components, which can pour molten steel into the ingot transfer vehicle and cool it into ingots. In this embodiment, the upper cover 122 is hinged on one side of the top of the furnace body 123, the guide port 121 is arranged on the side opposite to the hinged side of the upper cover of the furnace body 123, and one side of the furnace body 123 is hinged to the smelting layer box 11.

[0066] The ingot transfer module 3 can transfer the molten steel (i.e., liquid metal) produced in the smelting module to this area for cooling. The ingot transfer vehicle 32 is provided with a flip hopper and a flip structure, which can flip and quickly demold the molten steel after it is cooled into an ingot.

[0067] The scrap metal transfer vehicle 14, the smelting crane 152, the smelting furnace 12, the tail gas treatment crane 272, the fan 25, the scrap metal material door 41, the steel ingot material door 42, the turning track platform 342, and the steel ingot transfer vehicle 32 are all remotely and automatically controlled by the control console of the control room module 7, and the power source is provided by the power distribution cabinet and the hydraulic pump station (which can be arranged in the smelting layer box 11) to avoid personnel entering the radiation area to operate and cause personnel to be exposed. The present invention performs heat exchange cooling on the smelting furnace 12 through the heat exchange station 62 to extend the service life of the smelting furnace 12.

[0068] The locker room 5, smelting layer box 11, smelting crane box 151, exhaust gas treatment box 21, exhaust gas treatment crane box 271, control module box of control room module 7, accessory module box of accessory module 6, and ingot transfer box 31 are of standard container size, which is convenient for separate transportation. All boxes are quick-disassembly structures, and the shell can be quickly disassembled when assembling and disassembling the system.

[0069] The advantages of the present invention are: (1) It realizes modular design, can realize rapid disassembly and assembly, and transportation, realizes multi-purpose use of one machine, and can be applied to multiple scenarios according to needs; (2) The smelting, waste gas treatment, and control partition configuration make the system operation more stable; (3) Personnel and materials are moved in partitions to reduce the risk of personnel exposure.

[0070] Embodiment 2

[0071] like Figure 1-Figure 13 As shown, a method for using a mobile radioactive metal smelting system, using a mobile radioactive metal smelting system of embodiment 1, the method for using includes the following steps:

[0072] a. Assemble and connect the smelting module 1, the tail gas treatment module 2 and the steel ingot transfer module 3.

[0073] In this step, according to actual needs, the dressing room 5, the accessory module 6, the control room module 7, the smelting module 1, the tail gas treatment module 2, and the ingot transfer module 3 can also be assembled and connected, and the gas, water, and circuit pipelines between the modules can be connected. For convenience, the modules can be installed in advance and transported to the site in the form of containers to connect the gas, water, and circuit pipelines.

[0074] b. Open the door of the smelting layer box 11, transport the radioactive scrap metal into the smelting layer box 11, close the door, and feed the scrap metal into the feeding port of the smelting furnace 12 through the feeding device. After the feeding is completed, start the smelting furnace 12 to smelt the scrap metal.

[0075] The specific process is as follows: radioactive scrap metal is placed in the scrap metal barrel 13, the scrap metal material door 41 is opened, the scrap metal barrel 13 is placed on the scrap metal transfer vehicle 14 by a forklift, the scrap metal transfer vehicle 14 runs along the scrap metal outer track platform 17 to the scrap metal transfer track platform 16 in the smelting layer box 11, and the scrap metal material door 41 is closed, so that the smelting layer box 11 is a closed space. The smelting crane 15 suspends the scrap metal barrel 13 above the smelting furnace 12, opens the upper cover of the smelting furnace 12, and the scrap metal barrel 13 falls above the smelting furnace 12. The bottom plate locking mechanism 134 of the scrap metal barrel 13 is opened to open the barrel bottom plate 132, and the radioactive scrap metal material falls into the smelting furnace 12, and the smelting furnace 12 is started to melt the radioactive scrap metal into molten metal. Among them, the infusible impurities in the molten metal are scooped by the slag net 181 hoisted by the smelting crane 152 and placed in the slag bucket 182.

[0076] The structure of the scrap metal barrel 13 does not require manual work during the entire process of feeding the scrap metal barrel 13 into the smelting furnace 12. When the scrap metal barrel 13 passes downward through the smelting furnace 12, the pressure rod 1342 rotates when it touches the furnace mouth, so that the pressing part on the pressure rod 1342 is separated from the bottom support plate 1341, and the barrel bottom plate 132 is opened, so that the radioactive scrap metal material falls smoothly into the smelting furnace 12.

[0077] c. The molten metal smelted in the smelting furnace 12 is cast into the steel ingot transfer module 3. The molten metal smelted in the smelting furnace 12 is cast into an ingot through the steel ingot transfer module 3 to form a steel ingot, and then transferred out.

[0078] The specific process is as follows: after the slag removal is completed, the furnace body of the smelting furnace 12 is tilted, and the pure molten metal flows along the guide port of the smelting furnace 12 into the ingot transfer car 32, and the ingot material door 42 is opened. After the ingot transfer car 32 moves to the flip track platform 342, the ingot material door 42 is closed, and the flip track platform 342 is rotated to change the transportation direction of the ingot transfer car 32, and the ingot transfer car 32 is moved to the straight track platform 341 of the ingot transfer platform 34. After the molten metal is cooled and becomes an ingot, the ingot transfer car 32 flips the hopper, demolds the ingot onto the ingot tray 33, and then the ingot tray 33 and the ingot are transported to the designated location for storage through the ingot discharge port 311 by a forklift.

[0079] In the present invention, the steel ingot transfer vehicle 32 includes a moving frame and a tipping hopper rotatably connected to the moving frame.

[0080] d. The flue gas generated by smelting scrap metal in the smelting module 1 is purified by the tail gas treatment module 2 so that it meets the emission standards before being discharged.

[0081] The specific process is as follows: the tail gas generated during the smelting of radioactive scrap metal and the air in the smelting area enter the tail gas treatment module 2 through the pipeline, and flow through the bag filter 23, the air duct 26, the purification filter assembly 24, and the fan 25 in sequence to be discharged into the on-site tail gas pipeline, or directly discharged after passing the test. The radioactive waste generated by the filtration is collected in the filter bag of the bag filter 23 and the primary filter element 242 and the high-efficiency filter element 243 in the purification filter assembly 24.

[0082] When the filter bag and filter element need to be replaced, the filter bag of the bag filter 23 and the primary filter element 242 and the high-efficiency filter element 243 can be hoisted to the exhaust gas treatment waste barrel (30) by the exhaust gas treatment crane 272, and then replaced with new filter bags, primary filter elements (38) and high-efficiency filter elements (39). In the present invention, at least one exhaust gas treatment waste barrel 28 is also included, and the exhaust gas treatment waste barrel 28 can be placed on the smelting crane 152, and the exhaust gas treatment waste barrel 28 can be transported to the outside of the system by the cooperation of the smelting crane 152 and the purification track platform 22.

[0083] In the present invention, during the smelting process of radioactive scrap metal, the operator does not enter the smelting area throughout the whole process, and will not cause exposure to personnel, thereby reducing the radioactive risk of the operator. The present invention realizes the rapid assembly, disassembly and movement of the system through innovative modular design, and significantly improves the flexibility and mobility of the system. Automated control and remote operation reduce the risk of operators being exposed to radioactive substances and enhance the safety of operation. The multi-stage tail gas treatment system effectively purifies the exhaust gas generated during the smelting process and improves environmental safety. The design of the system achieves operational safety and stability, and ensures the health of the operator and the reliable operation of the system through radiation protection measures such as the dressing room 5, the shielding partition 111, and the upper shielding plate 273. In addition, the standardized and modular design simplifies the maintenance and transportation process, reduces costs, and improves smelting efficiency and production capacity. Overall, the environmental friendliness and economic benefits created by the present invention are significant, providing a safe, efficient, flexible and economical solution for the field of radioactive metal smelting, meeting the requirements of modern green manufacturing and environmental protection.

[0084] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A mobile radioactive metal smelting system, characterized in that: include: A smelting module, wherein the smelting module comprises a smelting layer box, a smelting furnace, and a feeding device for feeding materials into the smelting furnace, wherein the smelting layer box is in the form of a container, and the smelting furnace is arranged in the smelting layer box; an opening is arranged on the smelting layer box, and a box door is arranged at the opening of the smelting layer box; A tail gas treatment module is located on one side of the smelting module, and the tail gas treatment module includes a tail gas treatment box and a tail gas filtering device. The tail gas treatment box is in the form of a container, and the tail gas filtering device is arranged in the tail gas treatment box. An opening is arranged on the tail gas treatment box, and a box door is arranged at the opening of the tail gas treatment box; The ingot transfer module is used to cast the molten metal from the smelting furnace into an ingot to form a steel ingot, and then transfer the ingot.

2. A mobile radioactive metal smelting system according to claim 1, characterized in that: The steel ingot transfer module is located on a side of the smelting module that is different from the exhaust gas treatment module. The steel ingot transfer module includes an ingot transfer box, an ingot transfer vehicle, and an ingot pallet. The steel ingot transfer box is in the form of a container, and the ingot transfer vehicle and the ingot pallet are both located in the steel ingot transfer box.

3. A mobile radioactive metal smelting system according to claim 1, characterized in that: The feeding device comprises a scrap metal barrel, a scrap metal transfer vehicle, and the feeding crane module; the scrap metal barrel is placed on the scrap metal transfer vehicle, and the feeding crane module moves the scrap metal barrel to above the smelting furnace.

4. A mobile radioactive metal smelting system according to claim 3, characterized in that: The loading crane module includes a smelting crane box and a smelting crane. The smelting crane box is arranged above the smelting module. The bottom of the smelting crane box is connected to the upper part of the smelting module. The smelting crane is hoisted on the upper part of the smelting crane box. The smelting crane box is a container-type structure.

5. The mobile radioactive metal smelting system according to claim 1, characterized in that: The movable radioactive metal smelting system further comprises an accessory module, which is in the form of a container and in which a power distribution cabinet and a heat exchange station are arranged.

6. A mobile radioactive metal smelting system according to claim 2, characterized in that: The movable radioactive metal smelting system further comprises a control room module for controlling the operation of the system, and the control room module is a box-type structure.

7. A mobile radioactive metal smelting system according to claim 2, characterized in that: The ingot transfer module includes an ingot transfer platform, one end of which extends to the opening of the smelting layer box, and the ingot transfer platform includes a straight track platform fixedly arranged in the ingot transfer box, and a flip track platform rotatably connected to one side of the straight track platform, the flip track platform is a disc structure, the radial direction of the flip track platform is horizontally arranged, and the axial direction of the flip track platform is vertically arranged.

8. The mobile radioactive metal smelting system according to claim 1, characterized in that: The exhaust gas filtering device includes a bag filter, at least one purification filter assembly, and a fan. The inlet end of the bag filter is connected to the smelting module, at least one purification filter assembly is connected to the outlet end of the bag filter through an air duct, and the outlet end of the purification filter assembly is connected to at least one fan.

9. A method for using a mobile radioactive metal smelting system, characterized in that: Using a movable radioactive metal smelting system as claimed in any one of claims 1 to 8, the method of using the system comprises the following steps: a. Assemble and connect the smelting module, the tail gas treatment module and the steel ingot transfer module; b. Opening the box door on the smelting layer box, transporting the radioactive scrap metal into the smelting layer box, closing the box door, feeding the scrap metal into the feeding port of the smelting furnace through a feeding device, and starting the smelting furnace to smelt the scrap metal after the feeding is completed; c. The molten metal after smelting in the smelting furnace is cast into the steel ingot transfer module, and the molten metal after smelting in the smelting furnace is cast into the ingot through the steel ingot transfer module to form the steel ingot, and then transferred out; d. The exhaust gas treatment module is used to purify the fume generated by smelting scrap metals in the smelting module so that the fume meets the emission standards before being discharged.

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