Furnace building method for double-melting-channel furnace building and corresponding furnace building tool

Abstract

The invention provides a furnace building method for building a furnace through double melting channels. The problems that in the prior art, positioning is not accurate, fixing is not firm, grooving is not precise, and procedures are scattered are solved. The method comprises the following steps of: filling a base layer at the bottom of a furnace in advance, scraping a melting channel groove, accurately positioning the melting channel, sealing a water jacket opening by using a baffle plate, continuously filling a hearth, removing the baffle plate, cleaning redundant ramming materials between the two melting channels, mounting the water jacket at a preset position, and sealing the edge. And after secondary filling and surface hardening are completed, coil-iron core assembling is conducted, and furnace building is completed.

Description

Technical Field

[0001] This invention relates to the technical field of smelting equipment manufacturing, specifically to a furnace construction method for a double melting groove furnace. This invention also provides furnace construction tooling for a double melting groove furnace. Background Technology

[0002] In the smelting process of copper and copper alloys (CuCrZr, CuMg, CuSn, CuNiSi), the induction furnace is the core equipment. The molten groove at the bottom of the furnace serves as a crucial channel for the induction coil to form a circuit with the molten metal, and its installation quality directly determines the furnace's start-up success rate, operating efficiency, and service life.

[0003] The existing double-groove hearth construction process has significant drawbacks: 1. Poor positioning accuracy: The installation position of the molten groove, especially the relative position between the two molten grooves and the relative position with the induction coil, mainly relies on the experience of the construction personnel. Using simple tools such as tape measures, it is difficult to guarantee the dimensional accuracy required by the design (such as the symmetry of the distance from the furnace wall on both sides), which can easily lead to uneven distribution of electromagnetic field, affecting smelting efficiency and furnace safety. 2. Insecure fixing: Traditional methods use temporary supports or binding, which can easily cause the molten groove to shift or loosen when filling and tamping heavy refractory materials, resulting in the final position deviating from the design and even causing the furnace to be scrapped; 3. Low grooving quality: The grooves and key annular grooves used to place the molten grooves mostly rely on manual excavation and scraping, which is inefficient and makes it difficult to guarantee the size, shape and surface smoothness of the grooves, affecting the adhesion between the molten grooves and the refractory materials; 4. Weak process coordination: The tools used in processes such as grooving, fixing, and filling are not standardized, and the process is not well connected, resulting in a long overall construction cycle and poor quality consistency.

[0004] Therefore, there is an urgent need in this field for a systematic solution to achieve high-precision, high-efficiency, and high-reliability furnace construction installation with dual melting channels. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a furnace construction method for a double melting groove furnace, which solves the problems of inaccurate positioning, unstable fixing, imprecise grooving, and scattered processes in existing processes.

[0006] A furnace construction method for a double-melting-groove furnace is characterized by: first filling a foundation layer at the bottom of the furnace, then scraping out the melting groove, then precisely positioning the melting groove, then using a baffle to seal the water jacket opening, then continuing to fill the furnace chamber, removing the baffle and cleaning the excess ramming material between the two melting grooves, then installing the water jacket in the predetermined position, then sealing the edges, and after completing the secondary filling and surface hardening, assembling the coil-iron core to complete the furnace construction.

[0007] Its further characteristic lies in the following specific steps: S1. Furnace bottom pretreatment: Clean the furnace bottom and then construct a heat insulation and sealing base layer; S2. Basic layer filling and preliminary compaction: A certain amount of high-grade composite silicon ramming material is put into the furnace, spread and loosened with tools, and then the two sides are tamped to form a dense foundation and obtain the furnace bottom refractory material layer. S3. Precisely scrape the molten groove. Using a molten groove scraping tool, precisely scrape the molten groove around the molten groove at the horizontal center of the water jacket opening on the refractory material layer at the bottom of the furnace. The groove has a predetermined depth, width, and a predetermined distance from the furnace wall on both sides. S4. Pre-fixing and precise positioning of the molten groove: The molten groove, which is pre-loaded with a graphite sleeve and fixed with tape, is placed into the groove. The graphite sleeve of the molten groove is clamped with a molten groove fixing tool. By adjusting the molten groove fixing tool, the left and right positions of the molten groove are ensured to be symmetrical and meet the set distance requirements. Then, the molten groove fixing tool is locked in the furnace cavity to complete the precise positioning of the molten groove. S5. Water jacket inlet treatment and molten groove cleaning: Use a baffle to seal the water jacket inlet, continue to fill the furnace with high-grade composite silicon ramming material and compact it; then remove the baffle, clean up the excess ramming material between the two molten grooves, and install the water jacket in the predetermined position. S6. Edge sealing: Use refractory slurry to seal the edges of the furnace that come into contact with the molten groove, and wrap asbestos rope soaked in water glass around the inner edges to enhance sealing and thermal shock resistance. S7. Secondary filling and surface hardening: Refill with ramming material and pound until the gaps are filled. Apply hardener to the surface. After hardening, grind the graphite sleeve of the molten groove that protrudes from the plane to make it flush with the bottom plane of the furnace. S8. Coil-core assembly: Install the induction coil into the water jacket and insert an insulating board between the coil and the water jacket; then install the iron core into the coil and add a buffer pad between the coil and the iron core to complete the furnace construction.

[0008] Its further characteristic is: In step S1, asbestos boards are laid and refractory mortar is used to seal the surrounding gaps to form a heat-insulating and sealing base layer; In step S3, when using the tool for scraping the molten groove, select the appropriate scraper according to the specifications of the molten groove, install it on the main body rod with fixing bolts, then slide the positioning slider to clamp it on the outer wall of the furnace and lock it. Use the horizontal ruler and center reference point on the main body rod to adjust the scraper to be centered. Then, two people hold the non-slip handles at both ends and swing the main body rod left and right in sync. The scraper scrapes away the corresponding area of ​​the refractory material layer at the bottom of the furnace, gradually and accurately opening the arc-shaped molten groove. During step S3, the two workers work together to scrape and form two sets of molten grooves in turn. In step S4, the molten groove fixing tool is used as follows: First, the support frame is fixed to the inside of the furnace wall by adjusting the screws at both ends. Then, the molten groove between the two clamping arms is adjusted to be horizontal and centered by sliding the two clamping arms with reference to the horizontal scale, so that the two clamping arms clamp the molten groove evenly. After confirming that the position and angle of the molten groove meet the design requirements, the locking bolts are tightened to complete the fixing. After that, the subsequent refractory material pouring construction can be carried out. After the refractory material has cured and has sufficient strength, the locking bolts are loosened, and the adjusting screws are rotated in the opposite direction to loosen the clamping arms. The molten groove fixing tool can then be taken out for reuse. In step S4, the number of molten groove fixing tools corresponding to each group of molten grooves is one or two, just enough to ensure that the molten grooves are accurately positioned.

[0009] The furnace-building tooling for a double-melting-groove furnace is characterized by comprising: A tool for scraping weld grooves, which is used to scrape out arc-shaped weld grooves at the bottom of the weld groove to facilitate the pre-fixed placement of the weld groove; And a molten groove fixing tool, which is used to precisely position the molten groove inside the furnace.

[0010] Its further features are: The tool for scraping grooves includes a main rod, a pair of positioning sliders, a scraper, and several fixing bolts; The main rod extends along its length. A pair of positioning sliders are distributed at both ends of the main body rod along its length direction, and the positioning sliders are slidably positioned along the corresponding ends of the main body rod along its length direction. The scraper is used to scrape off the refractory material layer at the bottom of the furnace to form a molten groove. It is detachably installed at the middle position along the length of the main body rod, and the scraping end of the scraper is arranged facing the outside of the main body rod. The fixing bolts are used to fix the positioning slider and scraper at corresponding positions on the main body rod; A horizontal scale is provided on one surface of the main rod, and a central reference point is also provided at the center of the horizontal scale of the main rod. The interval between the positioning sliders is the interval between the two outer walls of the furnace. In the working state, the positioning sliders on both sides are arranged close to the corresponding outer walls of the furnace. The scraping end of the scraper is located directly above the refractory material layer at the bottom of the furnace cavity.

[0011] The groove fixing tool includes a support frame, a set of clamping components, and an adjustment and locking mechanism; the support frame includes a guide frame with a rigid structure extending in the length direction, and the guide frame has protruding guide sleeves at both ends in the length direction; the set of clamping components includes two clamping arms and two locking bolts, and each set of clamping arms includes a clamping plate portion; the adjustment and locking mechanism is a pair of adjusting screws with top posts; The clamping arm includes clearance holes that mimic the shape of the guide frame. Two sets of clamping arms are sleeved on the guide frame. Locking bolts pass through the guide holes on the clamping arms and press against the corresponding outer wall of the guide frame to fix the axial position of the clamping arms. The clamping plates of the two sets of clamping arms are arranged facing each other to clamp the molten groove. The guide sleeves at both ends of the guide frame are threaded to the screw ends of the adjusting screw. The top column of the adjusting screw is used to fit tightly against the inner side of the furnace wall.

[0012] The beneficial effects of using this invention are as follows: 1. High precision: Through specialized tooling, millimeter-level precise control is achieved over the installation position of the weld groove (such as spacing), the groove depth, and the shape of the annular groove, fundamentally eliminating human error. 2. Excellent stability: The dedicated weld groove fixing tool provides rigid clamping, ensuring that the weld groove remains firmly in place during vigorous tamping operations, thus guaranteeing the accuracy of the final installation position; 3. Significantly improved efficiency: Tooling-based operations make key processes such as grooving, fixing, and scraping rings faster and more standardized, greatly shortening the construction cycle and reducing reliance on skilled workers; 4. Strong quality consistency: Standardized methods and tools ensure a high degree of consistency in quality across different furnace batches and operating procedures, greatly improving product reliability; 5. Systematic Integration: The methods and tools are organically combined to form a complete and replicable advanced furnace construction process system, which is easy to promote and apply. Attached Figure Description

[0013] Figure 1 This is a flowchart illustrating the collaborative workflow of some processes in this invention. Figure 2 This is a three-dimensional structural diagram of the scraping groove tool of the furnace construction fixture of the present invention; Figure 3 This is a diagram illustrating an implementation of the furnace groove scraping method of the present invention. Figure 4 This is a three-dimensional structural diagram of the molten groove fixing tool of the furnace construction fixture of the present invention; Figure 5 This is a diagram illustrating the implementation of the method for locating and fixing the weld groove according to the present invention. Figure 6 A schematic diagram of the weld groove structure with graphite sheath applicable to the present invention; Figure 7 A schematic diagram of the double-melting-groove furnace bottom structure fabricated by the method of the present invention; The names corresponding to the serial numbers in the diagram are as follows: 100 tool for scraping grooves in the weld groove; 200 tool for fixing the weld groove; Main rod 1, slide groove 101, first horizontal scale 2, sliding positioning slider 3, adjusting screw 31, hand handle 4, scraper 5, scraping end 51, fixing bolt 6, center reference point 7, furnace 8, furnace wall 81, furnace bottom refractory material layer 9, support frame 10, guide frame 11, guide sleeve 12, second horizontal scale 13, clamping assembly 20, clamping arm 21, locking bolt 22, clamping plate part 211, clearance hole 212, adjusting locking mechanism 30, adjusting screw 31, top column 311, screw end 312, melting groove 40, melting groove groove 50, gasket 60, graphite protective sleeve 70. Detailed Implementation

[0014] A method for constructing a furnace with double melting channels, see... Figures 1-7 The process involves first filling the furnace bottom with a base layer, then scraping out molten grooves, precisely positioning the molten grooves, sealing the water jacket opening with a baffle, continuing to fill the furnace, removing the baffle and cleaning up excess ramming material between the two molten grooves, installing the water jacket in the predetermined position, sealing the edges, completing the secondary filling and surface hardening, assembling the coil-iron core, and completing the furnace construction.

[0015] In a specific embodiment, the specific steps are as follows: S1. Furnace bottom pretreatment: Clean the furnace bottom, then lay asbestos boards and use refractory mud to seal the surrounding gaps to build a heat insulation and sealing base layer. S2. Filling and initial compaction of the base layer: Put 10 bags of high-grade composite silicon ramming material into the furnace, spread it out and loosen it with tools, and then use a pneumatic hammer to ram and compact the two sides of the area 4-6 times to form a dense base and obtain the furnace bottom refractory material layer 9. S3. Precisely scrape the molten groove 50. Using the molten groove scraping tool 100, precisely scrape the molten groove 50 around the molten groove at the horizontal middle position of the water jacket opening on the refractory material layer 9 at the bottom of the furnace. The molten groove 50 has a predetermined depth, width and predetermined distance from the furnace wall on both sides. S4. Pre-fixing and precise positioning of the molten groove: The molten groove 40, which is pre-loaded with graphite sleeve 7 and fixed with tape, is placed into the molten groove groove 50. The graphite sleeve 7 of the molten groove 40 is clamped with the molten groove fixing tool 200. By adjusting the molten groove fixing tool 200, the left and right positions of the molten groove 40 are ensured to be symmetrical and meet the set distance requirements. Then, the molten groove fixing tool 200 is locked in the furnace cavity to complete the precise positioning of the molten groove 40. S5. Water jacket inlet treatment and molten groove cleaning: Use a baffle to seal the water jacket inlet, continue to fill the furnace with high-grade composite silicon ramming material and compact it; then remove the baffle, clean up the excess ramming material between the two molten grooves, and install the water jacket in the predetermined position. S6. Edge sealing: Use refractory slurry to seal the edges of the furnace that come into contact with the molten groove, and wrap asbestos rope soaked in water glass around the inner edges to enhance sealing and thermal shock resistance. S7. Secondary filling and surface hardening: Refill with ramming material and pound 2-3 times until the gaps are filled. Apply hardener to the surface. After hardening, grind the graphite sleeve of the molten groove that protrudes from the plane to make it flush with the bottom plane of the furnace. S8. Coil-core assembly: Install the induction coil into the water jacket and insert an insulating board between the coil and the water jacket; then install the iron core into the coil and add a buffer pad between the coil and the iron core to complete the furnace construction.

[0016] In specific implementation, in step S3, when the tool 100 for scraping the molten groove is used, a suitable scraper 5 is selected according to the specifications of the molten groove and installed on the main body rod 1 by fixing bolts 6. Then, the positioning slider 3 is slid to clamp and lock it on the outer wall of the furnace. Using the first horizontal ruler 2 and the center reference point 7 on the main body rod 1, the scraper 5 is adjusted to be centered. Then, two people hold the non-slip hand handles 4 at both ends and swing the main body rod 1 left and right in sync. The scraper scrapes away the corresponding area of ​​the refractory material layer 9 at the bottom of the furnace and gradually and accurately opens the arc-shaped molten groove 50. During step S3, the two workers work together to scrape and form two sets of molten grooves 50 one after the other. In step S4, the use of the molten groove fixing tool 200 is as follows: First, the support frame 10 is adjusted and fixed to the inner side of the furnace wall by adjusting the screws 31 at both ends. Then, by sliding the two clamping arms 21 and referring to the second horizontal scale 13, the molten groove between the two clamping arms 21 is adjusted to be horizontal and centered, so that the two clamping arms 21 clamp the molten groove 40 evenly. After confirming that the position and angle of the molten groove 40 meet the design requirements, the locking bolts 22 are tightened to complete the fixing. After that, the subsequent refractory material pouring construction can be carried out. After the refractory material has cured and has sufficient strength, the locking bolts 22 are loosened, and the adjusting screws 31 are rotated in the opposite direction to make the support frame detach from the furnace wall. The molten groove fixing tool 200 can then be taken out and reused. In step S4, the number of molten groove fixing tools corresponding to each group of molten grooves is one or two, just enough to ensure that the molten grooves are accurately positioned.

[0017] For the furnace construction tooling of the double melting groove furnace, see... Figures 1-7 It includes: The tool for scraping grooves in the molten groove is used to scrape out an arc-shaped groove at the bottom of the molten groove, which facilitates the pre-fixing and placement of the molten groove. And a molten groove fixing tool, which is used to precisely position the molten groove inside the furnace.

[0018] In a specific embodiment, the tool for scraping the groove includes a main body rod 1, a pair of positioning sliders 3, a scraper 5, and several fixing bolts 6; The main body rod 1 extends along its length; a pair of positioning sliders 3 are distributed at both ends of the main body rod 1 along its length, and the positioning sliders 3 are slidably positioned at the corresponding ends along the length of the main body rod 1; a scraper 5 is used to scrape off the corresponding area of ​​the refractory material layer 9 at the bottom of the furnace to form a molten groove 50, and is detachably installed at the middle position along the length of the main body rod 1, with the scraping end 51 of the scraper 5 facing the outside of the main body rod 1; fixing bolts 6 are used to fix the positioning sliders 3 and the scraper 5 at the corresponding positions on the main body rod 1; A first horizontal scale 2 is provided on one surface of the main body rod 1. A center reference point 7 is also provided at the center of the first horizontal scale 2 of the main body rod 1. The interval between the positioning sliders 3 is the interval between the outer walls on both sides of the furnace. In the working state, the positioning sliders 3 on both sides are arranged close to the corresponding outer walls of the furnace. The scraping end 51 of the scraper 5 is located directly above the refractory material layer 9 at the bottom of the furnace 8 cavity.

[0019] In specific implementation, the main rod is a hollow structure, which reduces its weight while ensuring strength. One surface at each end of the main rod 1 along its length is provided with a groove 101. The positioning slider 3 is arranged perpendicular to the length of the main rod 1 along its length, and at least one fixing bolt 6 is provided at the position of the positioning slider 3 corresponding to the groove 101. After the positioning slider moves left and right along the groove and moves into place, the head of the fixing bolt 6 presses against the upper surface of the groove 101, thus completing the reliable locking of the positioning slider 3 relative to the length of the main rod 1.

[0020] In practice, hand handles 4 are fixed at both ends of the main rod 1 along its length. The hand handles 4 allow the operators on both sides to rotate the main rod synchronously, thereby causing the scraping end 51 of the scraper 5 to scrape the refractory material layer 9 at the bottom of the furnace directly below, forming an arc-shaped molten groove 50. The outer surface of the handle 4 is provided with an anti-slip texture to increase friction when holding the hand and improve operational stability.

[0021] In a specific embodiment, the weld groove fixing tool includes a support frame 10, a set of clamping components 20, and an adjustment and locking mechanism 30; The support frame 10 includes a guide frame 11 with a rigid structure extending in the length direction, and the guide frame 11 has outwardly protruding guide sleeves 12 at both ends in the length direction. A set of clamping assemblies 20 includes two clamping arms 21 and two locking bolts 22, and each set of clamping arms 21 includes a clamping plate portion 211; The adjusting locking mechanism 30 is a pair of adjusting screws 31 with top posts 311; The clamping arm 21 includes a clearance hole 212 that conforms to the shape of the guide frame 11. Two sets of clamping arms 21 are sleeved on the guide frame 11. After the locking bolt 22 passes through the guide hole on the clamping arm 21, it presses against the corresponding outer wall of the guide frame 11 to fix the axial position of the clamping arm 21. The clamping plate portions 211 of the two sets of clamping arms 21 are arranged facing each other to clamp the molten groove 40. The guide sleeves 12 at both ends of the guide frame 11 are respectively threaded to the screw end 312 of the adjusting screw 31. The top column 311 of the adjusting screw 31 is used to fit tightly against the inner side of the furnace wall 81.

[0022] In practice, the guide frame 11 is arranged horizontally and has a non-rectangular structure in longitudinal section, which ensures that the clamping plate portion 211 will not deflect when the clamping arm 21 moves along the guide frame 11. The upper part of the guide frame 11 is a plane, and a second horizontal scale 13 is arranged on the upper plane of the guide frame 11, which facilitates the horizontal arrangement of the guide frame 11 and makes the molten groove 40 between the two clamping arms 21 horizontal and centrally arranged. When the molten groove 40 needs to be horizontally centered, the two adjusting screws 31 are arranged with equal protrusion distances relative to the guide sleeves 12 on the corresponding sides. In specific implementation, the two adjusting screws 31 achieve centering and clamping of the molten groove 40 by rotating synchronously or independently.

[0023] In a specific embodiment, the end face of the top column 311 facing the inner side of the furnace wall 81 is a plane to ensure that the top column 311 is reliably attached to the inner side of the furnace wall; A pad 60 is attached to the inner surface of the clamping plate portion 211 of the clamping arm 21. The pad 60 ensures that the surface of the molten groove 40 will not be damaged during clamping. In specific implementation, the pad 60 is made of ceramic fiber or similar material, which can protect the surface of the molten groove 40 from scratches and also play a certain role in heat insulation.

[0024] In practice, a graphite protective sleeve 70 is provided on the surface of the molten groove 40, which protects the safety of the molten groove 40 during actual clamping.

[0025] With the assistance of this method and corresponding tooling, high-quality and high-efficiency installation of double molten grooves was successfully achieved.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method of building a double-gutter furnace, characterized by: It fills the base layer in advance, then scrapes the groove groove, then accurately positions the groove, then blocks the water jacket port with a baffle, then continues to fill the hearth, removes the baffle and cleans up the excess ramming material between the two grooves, and installs the water jacket to the predetermined position, then seals the edge, completes the secondary filling and surface hardening, and then assembles the coil-core, completes the furnace building.

2. A method of building a double-moat furnace according to claim 1, wherein The specific steps are as follows: S1, furnace bottom pretreatment, clean the furnace bottom, then build a heat-sealing base layer; S2, base layer filling and preliminary ramming, put a certain amount of high-grade composite silicon ramming material into the hearth, use tools to flatten and loosen, then ram and compact the two side areas, form a dense base, and obtain the refractory layer of the furnace bottom; S3, accurately scrape the groove groove, use the groove scraping tool to accurately scrape the groove groove with a predetermined depth, width and a predetermined distance from the wall on the refractory layer of the furnace bottom at the middle position of the water jacket port; S4, groove pre-fixing and accurate positioning, put the groove fixed with graphite sleeve and tape into the groove groove, use the groove fixing tool to clamp the graphite sleeve of the groove, adjust the groove fixing tool to ensure that the left and right positions of the groove are symmetrical and meet the distance requirements, then lock the groove fixing tool in the furnace cavity, and then complete the accurate positioning of the groove; S5, water jacket port treatment and groove middle cleaning, use a baffle to block the water jacket port, continue to fill the high-grade composite silicon ramming material into the hearth and compact; then remove the baffle, clean up the excess ramming material between the two grooves, and install the water jacket to the predetermined position; S6, edge sealing, use refractory mud to seal the edge of the hearth in contact with the groove, and wrap the stone wool rope soaked in glass water around the inner edge to enhance the sealing and thermal shock resistance; S7, secondary filling and surface hardening, fill the ramming material again and ram it to fill the gap, apply hardening agent to the surface, and then grind the groove graphite sleeve above the plane to make it flush with the plane of the furnace bottom after hardening; S8, coil-core assembly: install the induction coil into the water jacket, and pad the insulating board between the coil and the water jacket; then install the iron core inside the coil, and add a buffer pad between the coil and the iron core to complete the furnace building.

3. A method of building a double-moat furnace according to claim 2, characterized in that: In step S1, lay the asbestos board and seal the gap around with refractory mud to form a heat-sealing base layer.

4. A method of building a double-moat furnace according to claim 2, characterized in that: In step S3, when using the groove scraping tool, select the appropriate scraper according to the groove specification, install it on the main rod with fixed bolts, then slide the positioning slider to clamp it on the outer wall of the furnace and lock it, adjust the scraper to the center using the horizontal scale and center reference point on the main rod, then two people hold the non-slip handles at both ends simultaneously, swing the main rod left and right in coordination, and the scraper removes the corresponding area of the refractory layer of the furnace bottom to gradually and accurately open the arc-shaped groove groove.

5. A method of building a double-moat furnace according to claim 4, characterized in that: When performing step S3, two people work together to successively scrape two groups of groove grooves.

6. A method of building a double-moat furnace according to claim 2, characterized in that: In step S4, the use of the molten channel fixing tool is as follows: first, the support frame is fixed to the inner side of the furnace wall through the two end adjusting screws, then the two clamping arms are adjusted to be horizontal and centered between them by referring to the horizontal scale, so that the two clamping arms uniformly clamp the molten channel, and after confirming that the position and angle of the molten channel meet the design requirements, the locking bolts are tightened to complete the fixing; then the subsequent refractory pouring construction can be carried out, and after the refractory solidifies and has sufficient strength, the locking bolts are loosened, the clamping arms are loosened by reversing the rotation of the adjusting screws, and then the molten channel fixing tool can be taken out for repeated use.

7. A method of building a double-moat furnace according to claim 6, characterized in that: In step S4, the number of molten channel fixing tools corresponding to each group of molten channels is one or two, which ensures that the molten channel is accurately positioned.

8. A furnace building tool for a double-melt channel furnace for carrying out a double-melt channel furnace building method as claimed in any one of claims 1 to 7, characterized in that, It comprises: a molten channel groove scraping tool for scraping a circular arc molten channel groove at the bottom of the molten channel, facilitating the pre-fixed placement of the molten channel; and a molten channel fixing tool for accurately positioning the molten channel in the hearth.

9. The double melt channel building tunnel tool according to claim 8, characterized in that: The molten channel groove scraping tool comprises a main body rod, a pair of positioning sliding blocks, a scraping plate, and a plurality of fixing bolts; The main body rod is arranged in the length direction. A pair of positioning sliding blocks are distributed at the length direction ends of the main body rod, and the positioning sliding blocks are slidingly arranged at the corresponding end positions of the length direction of the main body rod. The scraping plate is used to scrape the refractory material layer on the furnace bottom to form a molten channel groove, and is detachably mounted at the length direction middle position of the main body rod. The scraping end of the scraping plate is arranged towards the outside of the main body rod. The fixing bolts are used to fix the positioning sliding blocks and the scraping plate at the corresponding positions of the main body rod. A horizontal scale is provided on one surface of the main body rod, and a center reference point is further provided at the center of the horizontal scale of the main body rod. The spacing between the positioning sliding blocks is the spacing of the two outer walls of the furnace, and in the working state, the two positioning sliding blocks are arranged in close contact with the corresponding outer walls of the furnace. The scraping end of the scraping plate is arranged above the refractory material layer on the furnace bottom in the furnace cavity.

10. The dual moat built-up furnace tooling of claim 8, wherein: The molten channel fixing tool comprises a support frame, a set of clamping assemblies, and an adjusting and locking mechanism. The support frame comprises a length direction extending rigid structure guide frame, and the length direction two ends of the guide frame are provided with outwardly protruding guide sleeves. The set of clamping assemblies comprises two clamping arms and two locking bolts, and each clamping arm comprises a clamping plate part. The adjusting and locking mechanism is a pair of adjusting screws with top columns. The clamping arm comprises a relief hole shaped according to the shape of the guide frame, and the two sets of clamping arms are sleeved on the guide frame. The locking bolts are threaded through the guide holes on the clamping arms to tightly press the corresponding outer walls of the guide frame, thereby fixing the axial position of the clamping arm. The clamping plate parts of the two sets of clamping arms are arranged towards each other for clamping the molten channel. The guide sleeves at the two ends of the guide frame are respectively threadedly connected with the screw ends of the adjusting screws, and the top columns of the adjusting screws are used to tightly contact the inner side of the furnace wall.

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