Electric melting furnace for glass solidified bodies and method of assembling same

Abstract

The invention discloses an electric melting furnace for a glass solidified body and an assembling method thereof.The electric melting furnace comprises a melting furnace body, an electrode, a heat preservation body, a top cover plate covering the melting furnace body and a melting pool arranged in the melting furnace body, a discharging opening used for discharging is formed in the bottom of the melting furnace body, and the heat preservation body is arranged outside the melting furnace body and the top cover plate; the electrode penetrates through the wall of the smelting furnace body and is used for heating a glass solidified body in a molten pool, the smelting furnace body is formed by piling up refractory bricks, a reserved gap value between the refractory bricks is smaller than a preset gap value, and the heat preservation body is an elastic heat preservation body. According to the electric melting furnace for the glass solidified body and the assembling method of the electric melting furnace, the electric melting furnace adopts a bottom discharging mode, the special requirements of the radioactive field on the aspects of heat preservation, shock resistance, insulativity and the like are met, no expansion gap is reserved in the electric melting furnace, the assembling process of electrodes and corresponding refractory bricks is defined, and the production efficiency is improved. And reliable use of the assembled electric melting furnace in a radioactive environment can be effectively guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of radioactive waste treatment, and in particular relates to an electric melting furnace for a glass solidification body and an assembling method thereof. Background Art

[0002] High-level radioactive waste, primarily derived from spent fuel reprocessing, is characterized by high radioactivity levels, high heat release rates, high toxicity, and long radionuclide half-lives. A leak could cause radioactive contamination of soil, atmosphere, and water, posing a threat to humanity and the biosphere. Therefore, the storage, treatment, and disposal of high-level radioactive waste have always been crucial aspects of waste management.

[0003] At present, the internationally recognized method for treating high-level radioactive liquid waste is vitrification technology. The specific process routes are divided into a two-step method of rotary calcining furnace and induction heating metal melting furnace, a Joule heating ceramic electric melting furnace and a two-step cold crucible vitrification method.

[0004] In the civilian industry, a certain amount of expansion gap is reserved between the refractory bricks when the furnace is assembled. Moreover, due to its structural characteristics, the discharge method is generally overflow, which cannot be used in the radioactive field. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art and to provide an electric melting furnace for glass solidification and an assembly method thereof, which can be used for the treatment of high-level radioactive waste.

[0006] The technical solution adopted to solve the technical problem of the present invention is to provide an electric melting furnace for glass solidification body, including: a furnace body, electrodes, a heat-insulating body, a top cover plate covered on the furnace body, a molten pool arranged in the furnace body, a discharge port for discharging materials is arranged at the bottom of the furnace body, the heat-insulating body is arranged outside the furnace body and the top cover plate, the electrodes penetrate the wall of the furnace body, the electrodes are used to heat the glass solidification body in the molten pool, the furnace body is made of refractory bricks, the reserved gap value between the refractory bricks is less than the preset gap value, and the heat-insulating body is an elastic heat-insulating body.

[0007] Preferably, the preset gap value is 1 mm.

[0008] Preferably, the insulation body includes a furnace shell and insulation layer bricks, the insulation layer bricks are arranged in the furnace shell, the insulation layer bricks include insulation bricks and elastic material, the elastic material is arranged between the furnace shell and the insulation bricks, and the insulation layer bricks are adjacent to the refractory bricks.

[0009] Preferably, the elastic material is fiber cotton.

[0010] Preferably, the thermal insulation bricks include high-aluminum lightweight insulation bricks and chrome-zirconium corundum bricks, and the chrome-zirconium corundum bricks are arranged between the high-aluminum lightweight insulation bricks and the refractory bricks.

[0011] Preferably, the electric melting furnace for glass solidification further comprises: a melting furnace support, which is arranged below the heat insulation body.

[0012] Preferably, the furnace body comprises: a furnace box, an air cavity cover plate covering the furnace box, and at least one pipe opening of the air cavity cover plate is provided on the air cavity cover plate.

[0013] Preferably, the furnace box is made of melt pool refractory bricks, and the air cavity cover is made of air cavity refractory bricks. The refractory bricks include: melt pool refractory bricks and air cavity refractory bricks. The melt pool refractory bricks include C layer melt pool refractory bricks, B layer melt pool refractory bricks, and A layer melt pool refractory bricks arranged from bottom to top.

[0014] The present invention also provides a method for assembling the above-mentioned electric melting furnace for glass solidification, comprising the following steps:

[0015] The furnace body is stacked with refractory bricks to form a molten pool inside the furnace body, and a discharge port for discharging materials is stacked at the bottom of the furnace body. The reserved gap value between the refractory bricks is less than the preset gap value. During the stacking process, the electrodes are assembled with the refractory bricks so that the electrodes pass through the wall of the furnace body. The electrodes are used to heat the glass solidification body in the molten pool. A top cover is provided on the furnace body. During the stacking process, an insulation body is provided outside the furnace body and the top cover plate. The insulation body is an elastic insulation body.

[0016] Preferably, the step is to stack the refractory bricks to form a furnace body, form a molten pool in the furnace body, and stack a discharge port for discharging materials at the bottom of the furnace body. The reserved gap value between the refractory bricks is less than the preset gap value. During the stacking process, the electrodes are assembled with the refractory bricks so that the electrodes penetrate the wall of the furnace body. The electrodes are used to heat the glass solidified body in the molten pool. A top cover is provided on the furnace body. During the stacking process, a heat-insulating body is provided outside the furnace body and the top cover. The heat-insulating body is an elastic heat-insulating body. This step is in accordance with the stacking and assembly order from bottom to top, and specifically includes the following steps:

[0017] Step S1, assembling a furnace shell on a furnace support to stack and assemble a bottom support module;

[0018] Step S2: stacking and assembling the fourth layer of electrode modules on top of the bottom support module;

[0019] Step S3, stacking and assembling the third layer of electrode modules on top of the fourth layer of electrode modules;

[0020] Step S4, stacking and assembling the second layer of electrode modules on top of the third layer of electrode modules;

[0021] Step S5, stacking and assembling the first layer of electrode modules on top of the second layer of electrode modules;

[0022] Step S6, stacking and assembling the air cavity modules on top of the first layer of electrode modules;

[0023] Step S7: stacking and assembling the top cover module on the air cavity module to obtain an electric melting furnace for the glass solidification body.

[0024] Preferably, the step S1, assembling the furnace shell on the furnace support to stack and assemble the bottom support module, specifically includes the following steps:

[0025] Step S11, leveling the surface of the furnace support;

[0026] Step S12: placing the outer shell body of the furnace shell on the furnace support, wherein the outer shell body includes outer shell side walls and an outer shell overlap portion connected to the outer shell side walls. The outer shell overlap portion is then fixedly connected to the furnace support, and then center lines are drawn on the inner wall surfaces of the outer shell side walls around the outer shell body as reference lines.

[0027] Step S13, placing the bottom disc of the furnace shell on the overlapping part of the shell, a through hole is set in the center of the bottom disc, and positioning blocks are arranged circumferentially around the through hole to position the bottom disc so that the concentricity of the bottom disc and the shell body is within a preset concentricity deviation range.

[0028] Preferably, the step S2 of stacking and assembling the fourth layer of electrode modules on top of the bottom support module specifically includes the following steps:

[0029] Step S21: Assembling the fourth layer of electrodes by pre-assembling the insulation bricks on the inner side of the furnace shell corresponding to the fourth layer of electrodes and adjusting the height of the insulation bricks to position the fourth layer of electrodes so that the upper surface of the fourth layer of electrodes is horizontal and the parallelism deviation is within a preset parallelism deviation range;

[0030] The fourth layer electrode includes a fourth layer electrode shaft and a fourth layer electrode feed pipe connected to the fourth layer electrode shaft. The fourth layer electrode shaft passes through the side wall of the insulation body. A feed channel is provided at the bottom of the insulation body. The fourth layer electrode feed pipe passes through the feed channel. The fourth layer electrode feed pipe is used to heat the material passing through the feed channel. A positioning tool is provided between the fourth layer electrode feed pipe and the inner wall of the bottom of the insulation body so that the verticality deviation of the fourth layer electrode feed pipe is within a preset verticality deviation range.

[0031] Step S22, laying the bottom insulation layer bricks in the furnace shell below the fourth layer of electrodes;

[0032] Step S23: Laying the C-layer melt pool refractory brick bottom brick in the fourth-layer electrode module above the fourth-layer electrode, and using a concentric positioning tool to ensure that the concentricity of the C-layer melt pool refractory brick bottom brick and the fourth-layer electrode is within a preset concentricity deviation range;

[0033] Step S24: Lay the insulation layer bricks on the inner side of the furnace shell corresponding to the fourth layer of electrodes.

[0034] Preferably, the step S22 of laying the bottom insulation layer of bricks in the furnace shell below the fourth electrode layer specifically includes the following steps:

[0035] The bottom insulation layer bricks 5 include nano-board bricks and mullite lightweight bricks. First, mullite lightweight bricks are laid in the furnace shell below the fourth electrode to form a mullite lightweight brick layer, and then nano-board bricks are laid on the mullite lightweight brick layer to form a nano-board brick layer. The mullite lightweight brick layer is dry-laid, and the parallelism deviation of the upper surface of the mullite lightweight brick is within the preset parallelism deviation range.

[0036] Preferably, the step S24, laying the insulation layer bricks on the inner side of the furnace shell corresponding to the fourth layer of electrodes, specifically includes the following steps:

[0037] The insulation layer bricks include high-aluminum lightweight insulation bricks and chrome-zirconium corundum bricks. First, high-aluminum lightweight insulation bricks are dry-laid on the inner side of the furnace shell corresponding to the fourth layer of electrodes to form a high-aluminum lightweight insulation brick layer, and then chrome-zirconium corundum bricks are dry-laid on the inner side of the high-aluminum lightweight insulation brick layer to form a chrome-zirconium corundum brick layer.

[0038] Preferably, the step S3 of stacking and assembling the third layer of electrode modules on top of the fourth layer of electrode modules specifically includes the following steps:

[0039] Step S31, assembling the third layer of electrodes on top of the fourth layer of electrode modules;

[0040] Step S32: Laying the C-layer melt pool refractory bricks in the third-layer electrode module so that the reserved gap value between the C-layer melt pool refractory bricks in the third-layer electrode module is less than the preset gap value, and the parallelism deviation of the upper surface of the C-layer melt pool refractory bricks in the third-layer electrode module is within the preset parallelism deviation range;

[0041] Step S33: Lay the insulation layer bricks between the C-layer molten pool refractory bricks in the third-layer electrode module and the furnace shell. The insulation layer bricks are wet-laid.

[0042] Preferably, the step S31 of assembling the third layer of electrodes on the fourth layer of electrode modules specifically includes the following steps:

[0043] The third-layer electrode includes a third-layer electrode head and a third-layer electrode shaft. Pre-assembly and on-site secondary processing are adopted. First, the third-layer electrode head is pre-assembled with the C-layer molten pool refractory bricks in the third-layer electrode module. Then, the third-layer electrode shaft is positioned according to the position of the shaft hole on the third-layer electrode head. After that, the third-layer electrode head and the third-layer electrode shaft are taken out for pre-assembly. After the pre-assembly is completed, they are welded and assembled again. After the welding assembly is completed, the two are hoisted together for on-site assembly.

[0044] Preferably, the step S4 of stacking and assembling the second layer of electrode modules on top of the third layer of electrode modules specifically includes the following steps:

[0045] Step S41, assembling the second layer of electrodes on top of the third layer of electrode modules;

[0046] Lay the B-layer molten pool refractory bricks in the second-layer electrode module. Take the center line of the inner wall surface of the four side walls of the shell body as the reference, and coincide the center line of the B-layer molten pool refractory bricks in the second-layer electrode module with it. Then draw the positioning line on the back of the B-layer molten pool refractory bricks in the second-layer electrode module, and adjust the second-layer electrode to match the adjacent B-layer molten pool refractory bricks.

[0047] Then, assemble the other B-layer melt pool refractory bricks so that the reserved gaps between the B-layer melt pool refractory bricks are smaller than the preset gap value, the upper surfaces of the B-layer melt pool refractory bricks are horizontal, and the parallelism deviation of the upper surface horizontality of the B-layer melt pool refractory bricks is within the preset parallelism deviation range;

[0048] Step S42: Lay the insulation layer bricks between the B layer of molten pool refractory bricks and the outer shell of the furnace. The insulation layer bricks are wet laid.

[0049] Preferably, the step S5 of stacking and assembling the first layer of electrode modules on top of the second layer of electrode modules specifically includes the following steps:

[0050] Step S51, assembling the first layer of electrodes on top of the second layer of electrode modules;

[0051] Step S52: Laying the A-layer melt pool refractory bricks in the first-layer electrode module so that the reserved gap value between the A-layer melt pool refractory bricks in the first-layer electrode module is smaller than the preset gap value;

[0052] Step S53: Lay the insulation layer bricks between the A-layer molten pool refractory bricks in the first layer of the electrode module and the outer shell of the furnace. The insulation layer bricks are wet laid.

[0053] Preferably, the step S6 of stacking and assembling the air cavity modules on top of the first layer of electrode modules specifically includes the following steps:

[0054] Step S61: Lay the air cavity refractory bricks of the lower layer of the air cavity module above the first layer of electrode modules, draw positioning lines on the molten pool refractory bricks of the first layer of electrode modules, and use them as positioning edges for the air cavity refractory bricks of the lower layer of the air cavity module for assembly.

[0055] The reserved gap between the air cavity refractory bricks of the lower layer of the air cavity module is smaller than the preset gap value, the upper surface of the air cavity refractory bricks of the lower layer of the air cavity module is horizontal, and the parallelism deviation of the upper surface of the air cavity refractory bricks 3 of the lower layer of the air cavity module is within the preset parallelism deviation range;

[0056] Step S62, laying the insulation bricks between the lower air cavity refractory bricks of the air cavity module and the furnace shell, wherein the insulation bricks are wet laid;

[0057] Step S63, filling the inner cavities of the melt pool refractory bricks and the air cavity refractory bricks with polyurethane foam, and the gaps between the edges of the polyurethane foam and the melt pool refractory bricks and the air cavity refractory bricks are smaller than a preset gap value;

[0058] Step S64: Laying air cavity refractory bricks on the upper layer of the air cavity module to form an air cavity cover plate. The furnace body includes: a furnace box, an air cavity cover plate covering the furnace box, at least one air cavity cover plate nozzle being provided on the air cavity cover plate. The reserved gap value between the air cavity refractory bricks on the upper layer of the air cavity module is less than a preset gap value. The upper surface of the air cavity refractory bricks on the upper layer of the air cavity module is horizontal, and the parallelism deviation of the upper surface of the air cavity refractory bricks on the upper layer of the air cavity module is within a preset parallelism deviation range.

[0059] Step S65, lay the insulation layer bricks between the upper air cavity refractory bricks of the air cavity module and the furnace shell. After the laying is completed, a pressure rail groove is set on the insulation layer bricks between the upper air cavity refractory bricks of the air cavity module and the furnace shell, and a pressure rail is installed on the pressure rail groove. The pressure rail is used to press and tighten the upper air cavity refractory bricks of the air cavity module.

[0060] Preferably, the step S7, stacking and assembling the top cover module above the air cavity module to obtain an electric melting furnace for the glass solidification body, specifically includes the following steps:

[0061] Step S71: Install a top cover plate above the air cavity module. The top cover plate includes a square cover plate and a circular cover plate. The square cover plate is hoisted into place and fixedly connected to the air cavity module. Then, the circular cover plate is hoisted. During installation, the gap between the supporting edge of the square cover plate and the outer circle of the circular cover plate is controlled to be evenly arranged. The positions of the pipe openings of the square cover plate and the pipe openings of the circular cover plate are then circumferentially adjusted.

[0062] Step S72: Perform secondary processing on the orifice of the circular cover plate. During the first processing, the diameter of the orifice of the circular cover plate is processed to be smaller than the diameter of the orifice of the air cavity cover plate. After the circular cover plates are arranged, the deviation direction and size of each orifice are measured. Then, according to the actual assembly size, the diameter of the orifice of the circular cover plate is expanded a second time. After that, the circular cover plate is installed so that the orifice of the circular cover plate coincides with the orifice of the air cavity cover plate.

[0063] Step S73: Install a first flange at the pipe opening of the square cover plate and a second flange at the pipe opening of the circular cover plate, and connect the first flange and the second flange;

[0064] Step S74: After the internal installation of the ceramic electric melting furnace is completed, the external components are installed to obtain the electric melting furnace for the glass solidification body.

[0065] Preferably, the step S1 further includes a pre-assembly step, which specifically comprises: dry-laying the refractory bricks constituting the furnace body into a molten pool, measuring the overall dimensions of the pre-assembled furnace body, and if the error is within a preset range, the pre-assembled refractory bricks are qualified, marking the pre-assembled refractory bricks, and determining the actual installation position of the pre-assembled refractory bricks.

[0066] The electric melting furnace for glass solidification and the assembly method thereof of the present invention have a bottom discharge method, which meets the special requirements of the radioactive field in terms of thermal insulation, shock resistance, insulation, etc. No expansion joints are reserved in the electric melting furnace, and the assembly process of electrodes and corresponding refractory bricks is clearly defined, which can effectively ensure the reliable use of the assembled electric melting furnace in a radioactive environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 This is a schematic diagram of the fourth layer electrode installation in Example 2 of the present invention;

[0068] Figure 2 This is a schematic diagram of the installation of the third layer of electrodes and the C layer of molten pool refractory bricks in Example 2 of the present invention;

[0069] Figure 3 This is a schematic diagram of the installation of the second layer of electrodes and the B layer of molten pool refractory bricks in Example 2 of the present invention;

[0070] Figure 4 This is a schematic diagram of the installation of the first layer of electrodes and the A layer of molten pool refractory bricks in Example 2 of the present invention;

[0071] Figure 5 This is a schematic diagram of the installation of the lower layer of air cavity refractory bricks in Example 2 of the present invention;

[0072] Figure 6 This is a schematic diagram of the installation of the upper air cavity refractory bricks in Example 2 of the present invention;

[0073] Figure 7 This is the overall installation diagram of Example 2 of the present invention.

[0074] In the figure: 1-furnace shell, 21-first layer electrode, 22-second layer electrode, 23-third layer electrode, 24-fourth layer electrode, 31-C layer melt pool refractory brick bottom brick; 32-C layer melt pool refractory brick, 33-B layer melt pool refractory brick, 34-A layer melt pool refractory brick, 41-lower layer air cavity refractory brick, 42-upper layer air cavity refractory brick, 5-insulation layer brick, 6-top cover plate. DETAILED DESCRIPTION

[0075] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0076] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0077] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0078] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0079] Example 1

[0080] The present embodiment provides an electric melting furnace for a glass solidification body, comprising: a furnace body, electrodes, a heat-insulating body, a top cover plate arranged on the furnace body, a molten pool arranged in the furnace body, a discharge port for discharging materials arranged at the bottom of the furnace body, a heat-insulating body arranged outside the furnace body and the top cover plate, the electrodes penetrate the wall of the furnace body, the electrodes are used to heat the glass solidification body in the molten pool, the furnace body is made of stacked refractory bricks, the reserved gap value between the refractory bricks is less than the preset gap value, and the heat-insulating body is an elastic heat-insulating body.

[0081] This embodiment also provides a method for assembling the above-mentioned electric melting furnace for glass solidification, comprising the following steps:

[0082] The furnace body is stacked with refractory bricks to form a molten pool inside the furnace body, and a discharge port for discharging materials is stacked at the bottom of the furnace body. The reserved gap value between the refractory bricks is less than the preset gap value. During the stacking process, the electrodes are assembled with the refractory bricks so that the electrodes pass through the wall of the furnace body. The electrodes are used to heat the glass solidification body in the molten pool. A top cover is provided on the furnace body. During the stacking process, an insulation body is provided outside the furnace body and the top cover plate. The insulation body is an elastic insulation body.

[0083] The electric melting furnace for glass solidification and its assembly method in this embodiment have a bottom discharge method, which meets the special requirements of the radioactive field in terms of thermal insulation, shock resistance, insulation, etc. No expansion joints are reserved in the electric melting furnace, and the assembly process of electrodes and corresponding refractory bricks is clear, which can effectively ensure the reliable use of the assembled electric melting furnace in a radioactive environment.

[0084] Example 2

[0085] The present embodiment provides an electric melting furnace for glass solidification, comprising: a furnace body, electrodes, a heat-insulating body, a top cover plate 6 provided on the furnace body, a molten pool provided in the furnace body, a discharge port for discharging materials provided at the bottom of the furnace body, a heat-insulating body provided outside the furnace body and the top cover plate 6, the electrodes passing through the wall of the furnace body, the electrodes being used to heat the glass solidification body in the molten pool, the furnace body being made of stacked refractory bricks, the reserved gap value between the refractory bricks being smaller than the preset gap value, and the heat-insulating body being an elastic heat-insulating body.

[0086] Specifically, the electric melting furnace in this embodiment is a ceramic electric melting furnace, which is used for processing radioactive glass solidification bodies.

[0087] Preferably, the preset gap value is 1 mm.

[0088] Preferably, the insulation body includes a furnace shell 1 and insulation layer bricks 5, the insulation layer bricks 5 are arranged in the furnace shell 1, the insulation layer bricks 5 include insulation bricks and elastic material, the elastic material is arranged between the furnace shell 1 and the insulation bricks, and the insulation layer bricks 5 are adjacent to the refractory bricks.

[0089] Preferably, the elastic material is fiber cotton.

[0090] Preferably, the thermal insulation bricks include high-aluminum lightweight insulation bricks and chrome-zirconium corundum bricks. The chrome-zirconium corundum bricks are adjacent to the refractory bricks, and the chrome-zirconium corundum bricks are arranged between the high-aluminum lightweight insulation bricks and the refractory bricks.

[0091] Preferably, the electric melting furnace for glass solidification further comprises: a melting furnace support, which is arranged below the heat insulation body.

[0092] Preferably, the furnace body comprises: a furnace box, an air cavity cover plate covering the furnace box, and at least one pipe opening of the air cavity cover plate is provided on the air cavity cover plate.

[0093] Preferably, the furnace box is made of melt pool refractory bricks, and the air cavity cover is made of air cavity refractory bricks. The refractory bricks include: melt pool refractory bricks and air cavity refractory bricks. The melt pool refractory bricks include C layer melt pool refractory bricks 32, B layer melt pool refractory bricks 33, and A layer melt pool refractory bricks 34 arranged in sequence from bottom to top.

[0094] In the above-mentioned assembly method of the electric melting furnace for glass solidification in this embodiment, the electric melting furnace is a ceramic furnace. In order to ensure the quality of the ceramic furnace assembly, the electric melting furnace assembly is divided into three stages: pre-assembly stage, formal assembly stage, and post-assembly inspection stage.

[0095] The furnace shell 1 of the electric melting furnace in this embodiment includes a shell, a top interface, etc.; there are 8 electrodes in total, which are arranged in 4 layers, and the numbers from top to bottom are 4, 2, 1, and 1 respectively. In this patent, they are described as the first, second, third, and fourth layers of electrodes from top to bottom respectively; the molten pool refractory bricks are divided into 3 layers, and are described as A layer molten pool refractory bricks 34, B layer molten pool refractory bricks 33, and C layer molten pool refractory bricks 32 from top to bottom respectively; the air cavity refractory bricks are divided into 2 layers, and are described as upper layer air cavity refractory bricks 42 and lower layer air cavity refractory bricks 41 from top to bottom respectively; the insulation layer bricks 5 are assembled from multiple layers of refractory bricks of different materials, castables, fiber cotton and other materials, among which the fiber cotton is used to absorb thermal expansion, and the insulation layer bricks 5 are arranged in the middle position of the molten pool refractory bricks, air cavity refractory bricks and the furnace shell 1.

[0096] like Figures 1 to 7 As shown, this embodiment also provides an assembly method of the above-mentioned electric melting furnace for glass solidification body, comprising the following steps:

[0097] Pre-assembly stage:

[0098] The pre-assembly stage is mainly for the melt pool refractory bricks and air cavity refractory bricks. Before pre-assembly, the tools should be prepared and the refractory brick dimensions should be checked according to the drawings.

[0099] The pre-assembly step is as follows: dry-laying the refractory bricks constituting the furnace body out of the molten pool, measuring the overall dimensions of the pre-assembled furnace body, and if the error is within the preset range, the pre-assembled refractory bricks are qualified, marking the pre-assembled refractory bricks, and determining the actual installation position of the pre-assembled refractory bricks. The steps are as follows:

[0100] Mark the baseline;

[0101] Arrange the bottom layer of refractory bricks according to the drawing requirements, using dry-laying method to ensure that the joint surfaces of bricks fit together;

[0102] Build the metal support frame for the second layer of refractory bricks, and then assemble the second layer of refractory bricks according to the steps;

[0103] Install from bottom to top until all the pre-assembly of bath refractory bricks and air cavity refractory bricks is completed;

[0104] Measure the overall dimensions with an error control range of -5mm to 0mm;

[0105] After passing the test, the refractory bricks will be stamped or coded to determine the installation location.

[0106] Formal assembly stage:

[0107] Before formal assembly, a steel platform or scaffolding must be constructed to provide a working platform. Furthermore, the slurry casting material must be prepared as required. Once this preparation is complete, the furnace assembly can begin.

[0108] The furnace body is stacked with refractory bricks to form a molten pool in the furnace body. A discharge port for discharging materials is stacked at the bottom of the furnace body. The reserved gap value between the refractory bricks is less than the preset gap value. During the stacking process, the electrodes are assembled with the refractory bricks so that the electrodes penetrate the wall of the furnace body. The electrodes are used to heat the glass solidified body in the molten pool. A top cover plate 6 is provided on the furnace body. During the stacking process, an insulating body is provided outside the furnace body and the top cover plate 6. The insulating body is an elastic insulating body. This step is in accordance with the stacking and assembly order from bottom to top, and specifically includes the following steps:

[0109] Step S1, assembling the furnace shell 1 on the furnace support to stack and assemble the bottom support module, specifically includes the following steps:

[0110] Step S11: Before placing the furnace shell 1, the surface of the furnace support needs to be leveled. The leveling method is to use a laser or a level meter to measure, fill the lower position with a pad, and level the surface of the furnace support;

[0111] Step S12: placing the shell body of the furnace shell 1 on the furnace support, wherein the shell body includes shell side walls and a shell overlap portion connected to the shell side walls. The shell overlap portion is then fixedly connected to the furnace support, specifically by bolts. Then, center lines are drawn on the inner wall surfaces of the shell side walls around the shell body as reference lines.

[0112] Step S13, place the bottom disc of the furnace shell 1 on the overlapping part of the shell, a through hole is set in the center of the bottom disc, and positioning blocks are arranged circumferentially of the through hole, specifically 3 positioning blocks, to position the bottom disc, and position the bottom disc in the center position so that the concentricity of the bottom disc and the shell body is within the preset concentricity deviation range.

[0113] After the furnace shell 1 is assembled, the support disc at the bottom is subjected to post-weld processing to keep its upper surface level;

[0114] Step S2, stacking and assembling the fourth layer of electrode modules on top of the bottom support module, specifically includes the following steps:

[0115] Step S21, as Figure 1As shown, assemble the fourth layer electrode 24, pre-assemble the insulation bricks 5 on the inner side of the furnace shell 1 corresponding to the fourth layer electrode 24, adjust the height of the insulation bricks 5, and position the fourth layer electrode 24. Pre-assemble the insulation bricks 5, adjust the gaskets, and the fourth layer electrode 24 so that the upper surface of the fourth layer electrode 24 is level. Tighten the bolts and spot weld the adjustment gaskets. The parallelism deviation is within the preset parallelism deviation range, and the parallelism deviation is within ±1 mm.

[0116] The fourth-layer electrode 24 includes a fourth-layer electrode shaft and a fourth-layer electrode feed pipe connected to the fourth-layer electrode shaft. The fourth-layer electrode shaft passes through the side wall of the insulation body, and the electrode head and the three electrode shafts are welded. During the welding process, a support plate is installed on the electrode shaft to ensure that the three electrode shafts do not have position deviations, and then the electrode is welded to the furnace shell 1; a feed channel is provided at the bottom of the insulation body, and the fourth-layer electrode feed pipe passes through the feed channel. The fourth-layer electrode feed pipe is used to heat the material passing through the feed channel. In order to ensure the verticality of the fourth-layer electrode feed pipe, a positioning tool is provided between the fourth-layer electrode feed pipe and the inner wall of the bottom of the insulation body. Specifically, the positioning tool is a plastic circular tool, so that the verticality deviation of the fourth-layer electrode feed pipe is within a preset verticality deviation range, specifically to ensure that the fourth-layer electrode feed pipe can ensure the verticality deviation within the range of ±1° during subsequent assembly and transportation.

[0117] Step S22, laying the bottom insulation layer bricks 5 in the furnace shell 1 below the fourth electrode 24, specifically includes the following steps:

[0118] The bottom insulation layer bricks 5 include nano bricks and mullite lightweight bricks. First, mullite lightweight bricks are laid in the furnace shell 1 below the fourth electrode 24 to form a mullite lightweight brick layer, and then nano bricks are laid above the mullite lightweight brick layer to form a nano brick layer. The bottom insulation layer bricks 5 also include a high-alumina lightweight insulation brick layer and a chromium-zirconium corundum brick layer. The mullite lightweight brick layer is dry-laid and its upper surface is guaranteed to be horizontal. The parallelism deviation of the upper surface of the mullite lightweight brick is within the preset parallelism deviation range, and the specific parallelism deviation is within ±1mm; the bricks that exceed the deviation are leveled by laying dry powder on the bottom to ensure that they are flat and the gaps meet the requirements.

[0119] Step S23: Lay the C-layer melt pool refractory brick bottom brick 31 in the fourth-layer electrode module above the fourth-layer electrode 24, and use a concentric positioning tool to ensure that the concentricity of the C-layer melt pool refractory brick bottom brick 31 and the fourth-layer electrode 24 is within a preset concentricity deviation range. The concentric positioning tool is a positioning shaft assembly that ensures the concentricity of the melt pool refractory brick bottom brick and the fourth-layer electrode axis, specifically ensuring that the concentricity of the C-layer melt pool refractory brick bottom brick and the fourth-layer electrode axis is within ±1 mm.

[0120] Step S24, laying the insulation bricks 5 on the inner side of the furnace shell 1 corresponding to the fourth layer of electrodes 24, specifically includes the following steps:

[0121] The insulation layer bricks 5 include high-aluminum lightweight insulating bricks and chrome-zirconium corundum bricks. First, high-aluminum lightweight insulating bricks are dry-laid on the inner side of the furnace shell 1 corresponding to the fourth layer of electrode 24 to form a high-aluminum lightweight insulating brick layer, so that the bonding surfaces of each brick are in contact. Then, chrome-zirconium corundum bricks are dry-laid on the inner side of the high-aluminum lightweight insulating brick layer to form a chrome-zirconium corundum brick layer, so that the bonding surfaces of each brick are in contact.

[0122] Step S3, stacking and assembling the third layer of electrode modules on top of the fourth layer of electrode modules, specifically includes the following steps:

[0123] Step S31, as Figure 2 As shown, assembling the third layer of electrodes 23 above the fourth layer of electrode modules specifically includes the following steps:

[0124] The third-layer electrode 23 includes a third-layer electrode head and a third-layer electrode shaft, which are pre-assembled and processed on site. First, the third-layer electrode head is pre-assembled with the C-layer molten pool refractory bricks 32 in the third-layer electrode module. Then, the third-layer electrode shaft is positioned according to the position of the shaft hole on the third-layer electrode head. After that, the third-layer electrode head and the third-layer electrode shaft are taken out for pre-assembly. After the pre-assembly is completed, they are welded and assembled again. After the welding and assembly are completed, the two are hoisted together for on-site assembly.

[0125] Assemble the third layer electrode 23, and simultaneously lay the C layer bath refractory bricks 32 and the bath refractory bricks that match them. Fit the third layer electrode shaft to the refractory brick hole, move the whole into place, and then assemble it with the third layer electrode head, so that the lower surface of the third layer electrode head is in contact with the bath bottom bricks. At this point, the third layer electrode head and the third layer electrode shaft can be welded, and then the welding of the third layer electrode 23 to the furnace shell 1 is completed;

[0126] Step S32: Lay the C-layer melt pool refractory bricks 32 in the third-layer electrode module so that the bonding surfaces of each brick are aligned. To ensure a suitable gap between the melt pool refractory bricks and the electrode, insert a steel plate of appropriate size into the gap between the two, so that the reserved gap value between the C-layer melt pool refractory bricks 32 in the third-layer electrode module is less than the preset gap value. Specifically, check the gap between the refractory bricks to meet the requirement of <1mm, while keeping the upper surface level. The parallelism deviation of the upper surface of the C-layer melt pool refractory bricks 32 in the third-layer electrode module is within the preset parallelism deviation range. Specifically, check the horizontality of the upper surface of the refractory bricks. The parallelism deviation is within ±1mm. After meeting the requirements, pull out the steel plate, clean the surface, and seal the gap between the bricks with tape to prevent debris from falling in.

[0127] Step S33: Lay the insulation bricks 5 between the C-layer melt pool refractory bricks 32 in the third-layer electrode module and the furnace shell 1. The insulation bricks 5 are wet-laid. Specifically, the mortar joints are less than 2mm. The insulation bricks 5 include: refractory mud, chrome-zirconium corundum bricks, corundum casting material, dense clay bricks, oil paper, clay lightweight insulation bricks, high-aluminum lightweight insulation bricks, and fiber cotton. Refractory mud is used to apply to bricks during bricklaying to bond the bricks together. The fiber cotton is set in the outermost layer, and the oil paper is laid under the bricks. After the fiber cotton is laid, the chrome-zirconium corundum bricks are stacked, followed by the dense clay bricks, clay lightweight insulation bricks, and high-aluminum lightweight insulation bricks.

[0128] Step S4, stacking and assembling the second layer of electrode modules on top of the third layer of electrode modules, specifically includes the following steps:

[0129] Step S41, as Figure 3 As shown, the second layer of electrodes 22 are assembled above the third layer of electrode modules;

[0130] At the same time, lay the B-layer melt pool refractory bricks 33 and the refractory bricks matched with them in the second-layer electrode module. Using the center line of the inner wall surface of the four side walls of the shell body as a reference, align the center line of the B-layer melt pool refractory bricks 33 in the second-layer electrode module with it. Then, draw a positioning line on the back of the B-layer melt pool refractory bricks 33 in the second-layer electrode module, and adjust the second-layer electrode 22 to match its adjacent B-layer melt pool refractory bricks 33. The second-layer electrode 22 includes a second-layer electrode shaft and a second-layer electrode head. First, insert the second-layer electrode shaft from the mounting hole of the refractory brick, and then hoist them together to the corresponding position for installation. Then, weld the second-layer electrode 22 to the furnace shell 1.

[0131] Then assemble the other B-layer melt pool refractory bricks 33, making the joint surfaces of each brick fit together while keeping the upper surface level. Then insert pins between every two bricks to prevent misalignment, so that the reserved gap between the B-layer melt pool refractory bricks 33 is smaller than the preset gap value. Check the gap between the melt pool refractory bricks, which must meet the requirement of <1mm. The upper surface of the B-layer melt pool refractory bricks 33 is horizontal, and the parallelism deviation of the upper surface levelness of the B-layer melt pool refractory bricks 33 is within the preset parallelism deviation range. Check the upper surface levelness of the melt pool refractory bricks, and the parallelism deviation is within ±1mm. After meeting the requirements, clean the surface and seal the gaps between the bricks with tape to prevent debris from falling in.

[0132] Step S42: Lay the insulation bricks between the B-layer melt pool refractory bricks 33 and the furnace shell 1. This insulation brick layer is wet-laid and includes refractory mortar, chrome-zirconium corundum bricks, corundum casting material, oil-coated paper, lightweight clay insulating bricks, high-aluminum lightweight insulating bricks, and fiber wool. The insulation bricks 5 are wet-laid, with mortar joints less than 2mm. Refractory mortar is applied to the bricks during bricklaying to ensure adhesion. The fiber wool is placed as the outermost layer, and oil-coated paper is laid beneath the bricks. After the fiber wool is laid, the chrome-zirconium corundum bricks are laid, followed by the dense clay bricks, lightweight clay insulating bricks, and lightweight high-aluminum insulating bricks.

[0133] Step S5, as Figure 4 As shown, the first layer of electrode modules are stacked and assembled on top of the second layer of electrode modules, specifically including the following steps:

[0134] Step S51, assembling the first layer of electrodes 21 above the second layer of electrode modules;

[0135] Step S52: Lay the A-layer melt pool refractory bricks 34 and the melt pool refractory bricks matched therewith in the first-layer electrode module. The first-layer electrode 21 includes a first-layer electrode shaft and a first-layer electrode head. After the melt pool refractory bricks are installed in place, insert the first-layer electrode shaft from the mounting hole of the melt pool refractory bricks, and then weld the second-layer electrode 22 to the furnace shell 1. Then, lay the remaining melt pool refractory bricks of the A-layer so that the bonding surfaces of each brick fit together while keeping the upper surface level. Then, insert a pin between each two bricks to prevent misalignment, so that the reserved gap value between the A-layer melt pool refractory bricks 34 in the first-layer electrode module is less than the preset gap value, and the parallelism deviation of the upper surface of the A-layer melt pool refractory bricks 34 in the first-layer electrode module is within the preset parallelism deviation range. In addition, seal the gaps between the bricks with tape to prevent debris from falling in.

[0136] Step S53: Lay the insulation bricks 5 between the A-layer melt pool refractory bricks 34 in the first electrode module and the furnace shell 1. The insulation bricks 5 are wet-laid. The insulation bricks 5 include: refractory mud, chrome-zirconium corundum bricks, corundum casting material, dense clay bricks, oil paper, clay lightweight insulation bricks, high-aluminum lightweight insulation bricks, and fiber wool. The insulation bricks 5 are wet-laid, with mortar joints less than 2mm. Refractory mud is applied to bricks during bricklaying to ensure adhesion between bricks. The fiber wool is placed in the outermost layer, and the oil paper is laid beneath the bricks. After the fiber wool is laid, the chrome-zirconium corundum bricks are laid, followed by the dense clay bricks, clay lightweight insulation bricks, and high-aluminum lightweight insulation bricks.

[0137] Step S6, as Figure 5 As shown, above the first layer of electrode modules, the air cavity modules are stacked and assembled, specifically including the following steps:

[0138] Step S61, laying the lower layer of air cavity refractory bricks 41 of the air cavity module above the first layer of electrode modules, drawing positioning lines on the molten pool refractory bricks (A layer refractory bricks) of the first layer of electrode modules, and assembling them as the positioning edge lines of the lower layer of air cavity refractory bricks 41 of the air cavity module, so that the bonding surfaces of the bricks fit together and the upper surface is kept horizontal, and then inserting pins between every two bricks to prevent misalignment, so that the reserved gap value between the lower layer of air cavity refractory bricks 41 of the air cavity module is less than the preset gap value, checking the gap between the lower layer of air cavity refractory bricks 41 of the air cavity module, which must meet the requirement of <1mm, the upper surface of the lower layer of air cavity refractory bricks 41 of the air cavity module is horizontal, and the parallelism deviation of the upper surface of the lower layer of air cavity refractory bricks 41 of the air cavity module is within the preset parallelism deviation range, checking the horizontality of the upper surface of the lower layer of refractory bricks of the air cavity module, and the parallelism deviation is within ±1mm; after meeting the requirements, clean the surface, and seal the gap between the bricks with tape to prevent debris from falling in;

[0139] Step S62: Lay the insulation bricks 5 between the lower air cavity refractory bricks 41 of the air cavity module and the furnace shell 1. The insulation bricks 5 are wet-laid. The insulation bricks 5 include sillimanite bricks, dense clay bricks, castables, mullite lightweight bricks, and fiber wool. The insulation bricks 5 are wet-laid, and the mortar joints are less than 2 mm.

[0140] Step S63: Remove all tape covering the refractory bricks, fill the inner cavities of the melt pool refractory bricks and the air cavity refractory bricks with polyurethane foam, and apply plastic foil on the foam surface. The gap between the edge of the polyurethane foam and the melt pool refractory bricks and the air cavity refractory bricks should be less than the preset gap value, and the gap between the edge of the polyurethane foam and the refractory bricks should be less than 1mm to ensure the stability of the furnace during transportation.

[0141] Step S64, as Figure 6 As shown, the upper air cavity refractory bricks 42 of the air cavity module are laid, with a total of 6 air cavity refractory bricks. First, the edge of the air cavity lower layer air cavity refractory bricks 41 is used as a reference to install the 4 air cavity refractory bricks around the periphery, and then the middle 2 air cavity refractory bricks are hoisted in through the suction cup; the air cavity cover plate is formed. The furnace body includes: a furnace box, an air cavity cover plate covering the furnace box, and at least one air cavity cover plate nozzle is set on the air cavity cover plate to make the joint surfaces of each brick fit together while keeping the upper surface level, and then insert The pins between the wedge-shaped bricks prevent dislocation; the reserved gap value between the upper air cavity refractory bricks 42 of the air cavity module is less than the preset gap value. After the installation is completed, check the gap between the air cavity refractory bricks, which must meet the requirement of <1mm. The upper surface of the upper air cavity refractory bricks 42 of the air cavity module is horizontal, and the parallelism deviation of the upper surface of the upper air cavity refractory bricks 42 of the air cavity module is within the preset parallelism deviation range. Check the horizontality of the upper surface of the air cavity refractory bricks, and the parallelism deviation is within ±1mm.

[0142] Step S65, lay the insulation layer bricks 5 between the upper air cavity refractory bricks 42 of the air cavity module and the furnace shell 1, first install the high-purity mullite bricks, and align their pipe ends with the pipe ends of the upper air cavity refractory bricks 42 one by one, and then lay other insulation layer bricks 5 in sequence. After the laying is completed, a pressure rail groove is set on the insulation layer bricks 5 between the upper air cavity refractory bricks 42 of the air cavity module and the furnace shell 1, and a pressure rail is installed on the pressure rail groove. The pressure rail is used to press and tighten the upper air cavity refractory bricks 42 of the air cavity module. Specifically, four sets of pressure rails are assembled according to the designed position, and the pressing position is adjusted to ensure that the upper air cavity refractory bricks 42 are in a tightened state, and then the pouring of the casting material at the pressure rail installation groove is completed.

[0143] Step S7, stacking and assembling the top cover module above the air cavity module to obtain an electric melting furnace for the glass solidification body, specifically comprising the following steps:

[0144] Step S71: Install the top cover plate 6 above the air cavity module. The top cover plate 6 includes a square cover plate and a circular cover plate. The square cover plate is hoisted into place and fixedly connected to the air cavity module by tightening the nuts. Then, the circular cover plate is hoisted. During installation, the gap between the supporting edge of the square cover plate and the outer circle of the circular cover plate is controlled to be evenly arranged. The positions of the pipe openings of the square cover plate and the pipe openings of the circular cover plate are then circumferentially adjusted.

[0145] Step S72: Perform secondary processing on the pipe openings of the circular cover plate to ensure that the pipe openings of the air cavity cover plate coincide with the pipe openings of the circular cover plate. During the first processing, the pipe opening diameter of the circular cover plate is processed to be smaller than the pipe opening diameter of the air cavity cover plate. After the circular cover plates are arranged, the deviation direction and size of each pipe opening are measured. Then, according to the actual assembly size, the pipe opening diameter of the circular cover plate is expanded for a second time. After that, the circular cover plate is installed so that the pipe opening of the circular cover plate coincides with the pipe opening of the air cavity cover plate.

[0146] Step S73: Install a first flange at the pipe opening of the square cover plate and a second flange at the pipe opening of the circular cover plate, and connect the first flange and the second flange;

[0147] After the internal installation of the ceramic electric melting furnace is completed, the external components are installed to obtain an electric melting furnace for glass solidification. The external components include flanges, ceramic insulating rings, bellows expansion joints, springs, etc. The specific steps are as follows: ① Assemble the flanges and measure the verticality of their surfaces to ensure that the deviation is within the range of ±1°. Fill the gaps with pads; ② Weld the flanges. Positioning is required before welding. The positioning method is to install a plastic ring on the electrode shaft, perform spot welding, then remove the plastic ring and fully weld the flange; ③ Assemble the ceramic insulating rings, bellows expansion joints, springs, etc., and then bolt them to the flange. ④ Install the springs. When the springs are in their natural state, tighten the bolts on all sides to compress the springs within the range of 5mm to 10mm. Then weld the springs in place and remove the bolts. The springs are compressed at room temperature. Under the high-temperature operating conditions of the furnace, the springs will be in their natural length or extended state. The external components also include other accessories.

[0148] Post-installation testing phase

[0149] After installation is completed, check the overall dimensions and interface dimensions according to design requirements;

[0150] Detecting the insulation between each electrode and the furnace shell 1;

[0151] Conduct compressed air ventilation test for cooling each electrode.

[0152] Furthermore, during the formal installation phase, after each electrode is installed, an insulation test between the electrode and the furnace shell 1 and an electrode ventilation test are carried out;

[0153] Furthermore, during the formal installation phase, after each layer of bath refractory bricks is installed, the upper surface is cleaned before the next layer of refractory bricks is installed.

[0154] Furthermore, during the formal installation stage, when the insulation layer bricks 5 are wet laid, staggered wet laying is adopted.

[0155] The assembly method of the electric melting furnace in this embodiment enables the bottom bricks to cooperate with the discharge electrode, providing a solution for assembling the glass-curing ceramic electric melting furnace in a factory. This solution can be completed by using tools such as a crane, electric hoist, lifting fixture, theodolite, level, elevation rod, ruler, vernier caliper, hanging hammer, rubber hammer, cutting machine, grinder, etc. in the factory.

[0156] The electric melting furnace for glass solidification and its assembly method in this embodiment have a bottom discharge method, which meets the special requirements of the radioactive field in terms of thermal insulation, shock resistance, insulation, etc. No expansion joints are reserved in the electric melting furnace, and the assembly process of electrodes and corresponding refractory bricks is clear, which can effectively ensure the reliable use of the assembled electric melting furnace in a radioactive environment.

[0157] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An electric melting furnace for glass solidification, characterized in that: include: The furnace body, electrodes, insulation body, a top cover plate arranged on the furnace body, and a molten pool arranged in the furnace body. A discharge port for discharging materials is arranged at the bottom of the furnace body. The insulation body is arranged outside the furnace body and the top cover plate. The electrodes penetrate the wall of the furnace body. The electrodes are used to heat the glass solidification body in the molten pool. The furnace body is made of refractory bricks. The reserved gap value between the refractory bricks is less than the preset gap value. The insulation body is an elastic insulation body.

2. The electric melting furnace for glass solidification according to claim 1, characterized in that: The default gap value is 1mm.

3. The electric melting furnace for glass solidification according to claim 1, characterized in that: The insulation body includes a furnace shell and insulation layer bricks. The insulation layer bricks are arranged in the furnace shell. The insulation layer bricks include insulation bricks and elastic materials. The elastic material is arranged between the furnace shell and the insulation layer. The insulation layer bricks are adjacent to the refractory bricks.

4. The electric melting furnace for glass solidification according to claim 3, characterized in that: The elastic material is fiber cotton.

5. The electric melting furnace for glass solidification according to claim 3, characterized in that: The insulation bricks include high-aluminum lightweight insulation bricks and chrome-zirconium corundum bricks. The chrome-zirconium corundum bricks are arranged between the high-aluminum lightweight insulation bricks and the refractory bricks.

6. The electric melting furnace for glass solidification according to claim 1, characterized in that: Also includes: The furnace support is arranged below the heat insulation body.

7. The electric melting furnace for glass solidification according to claim 1, characterized in that: The furnace body comprises: a furnace box, an air cavity cover plate which is arranged on the furnace box, and at least one pipe opening of the air cavity cover plate is arranged on the air cavity cover plate.

8. The electric melting furnace for glass solidification according to claim 7, characterized in that: The furnace box is made of melt pool refractory bricks, and the air cavity cover is made of air cavity refractory bricks. The refractory bricks include: melt pool refractory bricks and air cavity refractory bricks. The melt pool refractory bricks include C layer melt pool refractory bricks, B layer melt pool refractory bricks, and A layer melt pool refractory bricks arranged from bottom to top.

9. A method for assembling an electric melting furnace for a glass solidification body according to any one of claims 1 to 8, characterized in that: The following steps are involved: The furnace body is stacked with refractory bricks to form a molten pool inside the furnace body, and a discharge port for discharging materials is stacked at the bottom of the furnace body. The reserved gap value between the refractory bricks is less than the preset gap value. During the stacking process, the electrodes are assembled with the refractory bricks so that the electrodes pass through the wall of the furnace body. The electrodes are used to heat the glass solidification body in the molten pool. A top cover is provided on the furnace body. During the stacking process, an insulation body is provided outside the furnace body and the top cover plate. The insulation body is an elastic insulation body.

10. The method for assembling an electric melting furnace for a glass solidification body according to claim 9, wherein: The step is to stack refractory bricks to form a furnace body, form a molten pool in the furnace body, and stack a discharge port for discharging materials at the bottom of the furnace body. The reserved gap value between the refractory bricks is less than the preset gap value. During the stacking process, the electrodes are assembled with the refractory bricks so that the electrodes penetrate the wall of the furnace body. The electrodes are used to heat the glass solidified body in the molten pool. A top cover is provided on the furnace body. During the stacking process, an insulating body is provided outside the furnace body and the top cover. The insulating body is an elastic insulating body. This step is in accordance with the stacking and assembly order from bottom to top, and specifically includes the following steps: Step S1, assembling a furnace shell on a furnace support to stack and assemble a bottom support module; Step S2: stacking and assembling the fourth layer of electrode modules on top of the bottom support module; Step S3, stacking and assembling the third layer of electrode modules on top of the fourth layer of electrode modules; Step S4, stacking and assembling the second layer of electrode modules on top of the third layer of electrode modules; Step S5, stacking and assembling the first layer of electrode modules on top of the second layer of electrode modules; Step S6, stacking and assembling the air cavity modules on top of the first layer of electrode modules; Step S7: stacking and assembling the top cover module on the air cavity module to obtain an electric melting furnace for the glass solidification body.

11. The method for assembling an electric melting furnace for a glass solidification body according to claim 10, wherein: The step S1 is to assemble the furnace shell on the furnace support and stack the bottom support module, which specifically includes the following steps: Step S11, leveling the surface of the furnace support; Step S12: placing the outer shell body of the furnace shell on the furnace support, wherein the outer shell body includes outer shell side walls and an outer shell overlap portion connected to the outer shell side walls. The outer shell overlap portion is then fixedly connected to the furnace support, and then center lines are drawn on the inner wall surfaces of the outer shell side walls around the outer shell body as reference lines. Step S13: Place the bottom disc of the furnace shell on the overlapping part of the shell. A through hole is provided in the center of the bottom disc. Positioning blocks are arranged circumferentially around the through hole to position the bottom disc so that the concentricity of the bottom disc and the shell body is within a preset concentricity deviation range.

12. The method for assembling an electric melting furnace for a glass solidification body according to claim 10, wherein: The step S2, stacking and assembling the fourth layer of electrode modules on top of the bottom support module, specifically includes the following steps: Step S21: Assembling the fourth layer of electrodes by pre-assembling the insulation bricks on the inner side of the furnace shell corresponding to the fourth layer of electrodes and adjusting the height of the insulation bricks to position the fourth layer of electrodes so that the upper surface of the fourth layer of electrodes is horizontal and the parallelism deviation is within a preset parallelism deviation range; The fourth layer electrode includes a fourth layer electrode shaft and a fourth layer electrode feed pipe connected to the fourth layer electrode shaft. The fourth layer electrode shaft passes through the side wall of the insulation body. A feed channel is provided at the bottom of the insulation body. The fourth layer electrode feed pipe passes through the feed channel. The fourth layer electrode feed pipe is used to heat the material passing through the feed channel. A positioning tool is provided between the fourth layer electrode feed pipe and the inner wall of the bottom of the insulation body so that the verticality deviation of the fourth layer electrode feed pipe is within a preset verticality deviation range. Step S22, laying the bottom insulation layer bricks in the furnace shell below the fourth layer of electrodes; Step S23: Laying the C-layer melt pool refractory brick bottom brick in the fourth-layer electrode module above the fourth-layer electrode, and using a concentric positioning tool to ensure that the concentricity of the C-layer melt pool refractory brick bottom brick and the fourth-layer electrode is within a preset concentricity deviation range; Step S24: Lay the insulation layer bricks on the inner side of the furnace shell corresponding to the fourth layer of electrodes.

13. The method for assembling an electric melting furnace for a glass solidification body according to claim 12, wherein: The step S22, laying the bottom insulation layer of bricks in the furnace shell below the fourth electrode layer, specifically includes the following steps: The insulation bricks of the bottom layer include nano-board bricks and mullite lightweight bricks. First, mullite lightweight bricks are laid in the furnace shell below the fourth electrode to form a mullite lightweight brick layer, and then nano-board bricks are laid on the mullite lightweight brick layer to form a nano-board brick layer. The mullite lightweight brick layer is dry-laid, and the parallelism deviation of the upper surface of the mullite lightweight brick is within the preset parallelism deviation range.

14. The method for assembling an electric melting furnace for a glass solidification body according to claim 12, wherein: The step S24, laying the insulation bricks on the inner side of the furnace shell corresponding to the fourth layer of electrodes, specifically includes the following steps: The insulation layer bricks include high-aluminum lightweight insulation bricks and chrome-zirconium corundum bricks. First, high-aluminum lightweight insulation bricks are dry-laid on the inner side of the furnace shell corresponding to the fourth layer of electrodes to form a high-aluminum lightweight insulation brick layer, and then chrome-zirconium corundum bricks are dry-laid on the inner side of the high-aluminum lightweight insulation brick layer to form a chrome-zirconium corundum brick layer.

15. The method for assembling an electric melting furnace for a glass solidification body according to claim 10, wherein: The step S3, stacking and assembling the third layer of electrode modules on top of the fourth layer of electrode modules, specifically includes the following steps: Step S31, assembling the third layer of electrodes on top of the fourth layer of electrode modules; Step S32: Laying the C-layer melt pool refractory bricks in the third-layer electrode module so that the reserved gap value between the C-layer melt pool refractory bricks in the third-layer electrode module is less than the preset gap value, and the parallelism deviation of the upper surface of the C-layer melt pool refractory bricks in the third-layer electrode module is within the preset parallelism deviation range; Step S33: Lay the insulation layer bricks between the C-layer molten pool refractory bricks in the third-layer electrode module and the furnace shell. The insulation layer bricks are wet-laid.

16. The method for assembling an electric melting furnace for a glass solidification body according to claim 15, wherein: The step S31, assembling the third layer of electrodes on the fourth layer of electrode modules, specifically includes the following steps: The third-layer electrode includes a third-layer electrode head and a third-layer electrode shaft. Pre-assembly and on-site secondary processing are adopted. First, the third-layer electrode head is pre-assembled with the C-layer molten pool refractory bricks in the third-layer electrode module. Then, the third-layer electrode shaft is positioned according to the position of the shaft hole on the third-layer electrode head. After that, the third-layer electrode head and the third-layer electrode shaft are taken out for pre-assembly. After the pre-assembly is completed, they are welded and assembled again. After the welding assembly is completed, the two are hoisted together for on-site assembly.

17. The method for assembling an electric melting furnace for a glass solidification body according to claim 10, wherein: The step S4, stacking and assembling the second layer of electrode modules on top of the third layer of electrode modules, specifically includes the following steps: Step S41, assembling the second layer of electrodes on top of the third layer of electrode modules; Lay the B-layer molten pool refractory bricks in the second-layer electrode module. Take the center line of the inner wall surface of the four side walls of the shell body as the reference, and coincide the center line of the B-layer molten pool refractory bricks in the second-layer electrode module with it. Then draw the positioning line on the back of the B-layer molten pool refractory bricks in the second-layer electrode module, and adjust the second-layer electrode to match the adjacent B-layer molten pool refractory bricks. Then, assemble the other B-layer melt pool refractory bricks so that the reserved gaps between the B-layer melt pool refractory bricks are smaller than the preset gap value, the upper surfaces of the B-layer melt pool refractory bricks are horizontal, and the parallelism deviation of the upper surface horizontality of the B-layer melt pool refractory bricks is within the preset parallelism deviation range; Step S42: Lay the insulation layer bricks between the B layer of molten pool refractory bricks and the furnace shell. The insulation layer bricks are wet laid.

18. The method for assembling an electric melting furnace for a glass solidification body according to claim 10, wherein: The step S5, stacking and assembling the first layer of electrode modules on top of the second layer of electrode modules, specifically includes the following steps: Step S51, assembling the first layer of electrodes on top of the second layer of electrode modules; Step S52: Laying the A-layer melt pool refractory bricks in the first-layer electrode module so that the reserved gap value between the A-layer melt pool refractory bricks in the first-layer electrode module is smaller than the preset gap value; Step S53: Lay the insulation layer bricks between the A-layer molten pool refractory bricks in the first layer of the electrode module and the outer shell of the furnace. The insulation layer bricks are wet laid.

19. The method for assembling an electric melting furnace for a glass solidification body according to claim 10, wherein: The step S6, stacking and assembling the air cavity modules on top of the first layer of electrode modules, specifically includes the following steps: Step S61: Lay the air cavity refractory bricks of the lower layer of the air cavity module above the first layer of electrode modules, draw positioning lines on the molten pool refractory bricks of the first layer of electrode modules, and use them as positioning edges for the air cavity refractory bricks of the lower layer of the air cavity module for assembly. The reserved gap between the air cavity refractory bricks of the lower layer of the air cavity module is smaller than the preset gap value, the upper surface of the air cavity refractory bricks of the lower layer of the air cavity module is horizontal, and the parallelism deviation of the upper surface of the air cavity refractory bricks 3 of the lower layer of the air cavity module is within the preset parallelism deviation range; Step S62, laying the insulation bricks between the lower air cavity refractory bricks of the air cavity module and the furnace shell, wherein the insulation bricks are wet laid; Step S63, filling the inner cavities of the melt pool refractory bricks and the air cavity refractory bricks with polyurethane foam, and the gaps between the edges of the polyurethane foam and the melt pool refractory bricks and the air cavity refractory bricks are smaller than a preset gap value; Step S64: Laying air cavity refractory bricks on the upper layer of the air cavity module to form an air cavity cover plate. The furnace body includes: a furnace box, an air cavity cover plate covering the furnace box, at least one air cavity cover plate nozzle being provided on the air cavity cover plate. The reserved gap value between the air cavity refractory bricks on the upper layer of the air cavity module is less than a preset gap value. The upper surface of the air cavity refractory bricks on the upper layer of the air cavity module is horizontal, and the parallelism deviation of the upper surface of the air cavity refractory bricks on the upper layer of the air cavity module is within a preset parallelism deviation range. Step S65, lay the insulation layer bricks between the upper air cavity refractory bricks of the air cavity module and the furnace shell. After the laying is completed, a pressure rail groove is set on the insulation layer bricks between the upper air cavity refractory bricks of the air cavity module and the furnace shell, and a pressure rail is installed on the pressure rail groove. The pressure rail is used to press and tighten the upper air cavity refractory bricks of the air cavity module.

20. The method for assembling an electric melting furnace for a glass solidification body according to claim 10, wherein: The step S7, stacking and assembling the top cover module above the air cavity module to obtain an electric melting furnace for the glass solidification body, specifically includes the following steps: Step S71: Install a top cover plate above the air cavity module. The top cover plate includes a square cover plate and a circular cover plate. The square cover plate is hoisted into place and fixedly connected to the air cavity module. Then, the circular cover plate is hoisted. During installation, the gap between the supporting edge of the square cover plate and the outer circle of the circular cover plate is controlled to be evenly arranged. The positions of the pipe openings of the square cover plate and the pipe openings of the circular cover plate are then circumferentially adjusted. Step S72: Perform secondary processing on the orifice of the circular cover plate. During the first processing, the diameter of the orifice of the circular cover plate is processed to be smaller than the diameter of the orifice of the air cavity cover plate. After the circular cover plates are arranged, the deviation direction and size of each orifice are measured. Then, according to the actual assembly size, the diameter of the orifice of the circular cover plate is expanded a second time. After that, the circular cover plate is installed so that the orifice of the circular cover plate coincides with the orifice of the air cavity cover plate. Step S73, installing a first flange at the pipe opening of the square cover plate and a second flange at the pipe opening of the circular cover plate, and connecting the first flange and the second flange; Step S74: After the internal installation of the ceramic electric melting furnace is completed, the external components are installed to obtain the electric melting furnace for the glass solidification body.

21. The method for assembling an electric melting furnace for a glass solidification body according to claim 10, wherein: The step S1 also includes a pre-assembly step, which specifically includes: dry-laying the refractory bricks that constitute the furnace body into a molten pool, measuring the overall dimensions of the pre-assembled furnace body, and if the error is within a preset range, it is qualified, marking the pre-assembled refractory bricks, and determining the actual installation position of the pre-assembled refractory bricks.

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