Internal structure of smelting furnace and construction technology of internal structure

Abstract

According to the internal structure of the smelting furnace and the construction technology of the internal structure of the smelting furnace, the internal structure of the smelting furnace is arranged in a smelting furnace shell and comprises a furnace bottom structure, a lower furnace wall structure and an upper furnace wall structure, and the furnace bottom structure is horizontally arranged at the bottom of the smelting furnace shell; the lower furnace wall structure and the upper furnace wall structure are arranged in the extending direction of the side wall of the smelting furnace shell, and the upper furnace wall structure is located above the lower furnace wall structure. The internal structure of the smelting furnace is formed by assembling the furnace bottom structure, the lower furnace wall structure and the upper furnace wall structure, the furnace bottom prefabricated part, the lower furnace wall prefabricated part and the upper furnace wall prefabricated part are integrally formed through mold casting and can be directly installed after being brought to a construction site, casting forming does not need to be carried out at multiple positions in the smelting furnace, and the cost is reduced. The wall construction time is greatly saved, and the problem that the construction time of an existing smelting furnace is too long is solved.

Description

Technical Field

[0001] The invention relates to the field of smelting furnace forming, and in particular to an internal structure of a smelting furnace and a construction process thereof. Background Art

[0002] The traditional smelting furnace is obtained by integral casting, that is, the traditional smelting furnace is an integrated structure. When cracks appear in the smelting furnace, the cracks will extend to the entire furnace wall, making the repair area of ​​the smelting furnace larger. When repairing the smelting furnace, it is necessary to knock down the entire furnace wall material, and then re-cast it at the knocked-down position, and finally bake the repaired part. At the same time, in the existing smelting furnace, the waiting time is long, and when pouring, workers are required to build the furnace wall material into a pouring channel; and because the pouring takes a lot of time and is carried out by multiple workers, it requires a lot of labor; and because of the differences in the pouring methods of different workers and the differences in the construction site environment, the structures of different furnace positions such as the furnace bottom, lower furnace wall or upper furnace wall may be uneven, which may cause the furnace body to be unstable. Summary of the invention

[0003] In view of the problems raised by the background technology, the purpose of the present invention is to propose an internal structure of a smelting furnace, which solves the problems that the traditional smelting furnace is formed by integral casting, is time-consuming, has low precision and is structurally unstable.

[0004] The invention also provides a construction process for the internal structure of the smelting furnace.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] An internal structure of a smelting furnace, arranged inside a smelting furnace shell, comprising: a furnace bottom structure, a lower furnace wall structure and an upper furnace wall structure, wherein the furnace bottom structure is horizontally arranged at the bottom of the smelting furnace shell, the lower furnace wall structure and the upper furnace wall structure are respectively arranged along the extension direction of the side wall of the smelting furnace shell, and the upper furnace wall structure is located above the lower furnace wall structure;

[0007] The furnace bottom structure includes a furnace bottom working layer and a bottom insulation brick layer, the bottom surface of the bottom insulation brick layer is connected to the bottom of the smelting furnace shell, and the furnace bottom working layer is arranged above the bottom insulation brick layer;

[0008] The lower furnace wall structure comprises a lower insulation side layer, an anti-leakage layer and a lower furnace wall prefabricated assembly which are arranged in sequence from outside to inside;

[0009] The upper furnace wall structure comprises an upper insulation side layer, an insulation pouring layer and an upper furnace wall prefabricated assembly which are sequentially arranged from the outside to the inside. The upper furnace wall prefabricated assembly is connected to the outer shell of the smelting furnace through a fixing component.

[0010] Preferably, the furnace bottom working layer comprises a plurality of furnace bottom prefabricated parts, the plurality of furnace bottom prefabricated parts are laid along the extension direction of the bottom insulation brick layer, and the intervals between adjacent furnace bottom prefabricated parts are filled with anti-leakage material;

[0011] The furnace bottom prefabricated component is a rectangular structure, and the furnace bottom prefabricated component includes a working surface, a supporting surface, two end surfaces and two side surfaces, the working surface is located at the top of the furnace bottom prefabricated component, the supporting surface is located at the bottom of the furnace bottom prefabricated component, the two end surfaces are parallel to each other, and the two end surfaces are respectively located at the front and rear ends of the furnace bottom prefabricated component, the two side surfaces are parallel to each other, and the two side surfaces are respectively located at the left and right sides of the furnace bottom prefabricated component; a circle of shrinkage guide grooves are provided on the outer peripheral side of the furnace bottom prefabricated component in the horizontal direction, and the shrinkage guide grooves are provided in the middle of the end surfaces and the side surfaces.

[0012] Preferably, the lower insulation side layer comprises a bottom brick layer and a lower insulation brick layer, the lower insulation brick layer is arranged at the lower part of the inner side wall of the outer shell of the smelting furnace, the bottom brick layer is arranged at the lower part of the inner side of the lower insulation brick layer, and the bottom brick layer and the lower insulation brick layer are stepped;

[0013] The lower furnace wall prefabricated assembly comprises a lower furnace wall prefabricated member and a lower furnace wall reinforcement member. A plurality of the lower furnace wall prefabricated members are arranged on the inner side of the lower insulation brick layer and connected to the upper side of the bottom brick layer. A circle of first connecting grooves is provided on the outer peripheral side of the lower furnace wall prefabricated member. Two adjacent lower furnace wall prefabricated members are fixed together by the lower furnace wall reinforcement member.

[0014] The anti-leakage layer is arranged between the lower furnace wall prefabricated assembly and the lower insulation side layer.

[0015] Preferably, the upper insulation side layer is provided on the upper part of the inner side wall of the outer shell of the smelting furnace;

[0016] The upper furnace wall prefabricated assembly comprises an upper furnace wall prefabricated assembly and an upper furnace wall reinforcement member. A plurality of the upper furnace wall prefabricated assembly are arranged above the lower furnace wall prefabricated assembly. A circle of second connecting grooves is arranged on the outer circumference of the upper furnace wall prefabricated assembly. Two adjacent upper furnace wall prefabricated assembly are fixed together by the upper furnace wall reinforcement member.

[0017] The thermal insulation pouring layer is arranged between the upper furnace wall prefabricated assembly and the upper thermal insulation side layer;

[0018] The fixing component includes a fixing rod and an anchor hook; one end of the fixing rod is connected to the outer shell of the smelting furnace, and the other end of the fixing rod penetrates the upper insulation side layer and the insulation casting layer and is connected to the upper furnace wall prefabricated component; one end of the anchor hook is connected to the outer shell of the smelting furnace, and the other end of the anchor hook penetrates the upper insulation side layer and the insulation casting layer and is connected to the upper furnace wall reinforcement.

[0019] Preferably, the upper furnace wall prefabricated component comprises two surfaces, two aligned side surfaces and two butt end surfaces, the two surfaces are arranged opposite to each other front to back, the two aligned side surfaces are arranged opposite to each other left to right and are respectively arranged between the two surfaces, and the two butt end surfaces are arranged opposite to each other up to down and are respectively arranged between the two surfaces and the two aligned side surfaces;

[0020] The second connecting grooves are respectively arranged on the alignment side surface and the butt end surface, and are connected end to end;

[0021] The butt joint end surface of the top is provided with a fixing portion, and the fixing portion is connected to the fixing rod.

[0022] A construction process for the internal structure of a smelting furnace comprises the following steps:

[0023] Step 1, setting a lower furnace wall structure along the extension direction of the inner side wall of the smelting furnace shell;

[0024] Step 2, a furnace bottom structure is arranged along the horizontal bottom extension direction of the smelting furnace shell, and the peripheral side of the furnace bottom structure is connected to the lower part of the lower furnace wall structure;

[0025] Step 3: Arrange an upper furnace wall structure above the lower furnace wall structure along the extension direction of the inner side wall of the smelting furnace shell.

[0026] Preferably, the step 1 comprises the following sub-steps:

[0027] Step 1-1, laying a bottom brick layer and a lower insulation brick layer along the inner wall of the smelting furnace shell, and placing a lower positioning piece on the inner side of the bottom brick layer;

[0028] Step 1-2, placing a plurality of lower furnace wall prefabricated parts respectively above the bottom brick layer, the lower furnace wall prefabricated parts are arranged along the extension direction of the lower insulation brick layer, and the upper part of the lower furnace wall prefabricated parts is limited by the upper reinforcement member;

[0029] Step 1-3, pouring anti-leakage material into the gap between the lower furnace wall prefabricated part and the lower insulation side layer to form an anti-leakage layer;

[0030] Step 1-4, pouring non-stick aluminum material between adjacent lower furnace wall prefabricated parts to form a lower furnace wall reinforcement part, and fixing several lower furnace wall prefabricated parts into one body by using the solidified non-stick aluminum material;

[0031] Step 1-5: Remove the lower positioning piece.

[0032] Preferably, the step 2 comprises the following sub-steps:

[0033] Step 2-1, arranging insulation bricks along the bottom of the smelting furnace shell to form a bottom insulation brick layer;

[0034] Step 2-2, placing a furnace bottom prefabricated component above the bottom insulation brick layer;

[0035] Step 2-3: filling the gaps between the furnace bottom prefabricated parts with anti-seepage material, and fixing the furnace bottom prefabricated parts together using the solidified anti-seepage material.

[0036] Preferably, the step 3 comprises the following sub-steps:

[0037] Step 3-1, welding anchor hooks on the inner wall of the smelting furnace shell, and applying a heat-insulating side layer along the inner wall of the smelting furnace shell;

[0038] Step 3-2, placing a plurality of upper furnace wall prefabricated parts respectively on top of the lower furnace wall structure;

[0039] Step 3-3, welding one end of the fixing rod to the inner wall of the outer shell of the smelting furnace, and fixing the upper furnace wall prefabricated part by using the fixing rod;

[0040] Step 3-4, pouring insulation material into the gap between the upper furnace wall prefabricated part and the upper insulation side layer to form an insulation pouring layer;

[0041] Step 3-5: pour low cement castables at intervals between adjacent upper furnace wall prefabricated parts to form upper furnace wall reinforcement parts, and use the solidified low cement castables to fix several upper furnace wall prefabricated parts into one.

[0042] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0043] The present invention provides an internal structure of a smelting furnace, which is assembled by adopting a furnace bottom structure formed by installing a bottom insulation layer and furnace bottom prefabricated parts, a lower furnace wall structure formed by installing a lower insulation side layer, an anti-leakage layer and a lower furnace wall prefabricated parts, and an upper furnace wall structure formed by installing an upper insulation side layer, an insulation casting layer and an upper furnace wall prefabricated parts; wherein the furnace bottom prefabricated parts, the lower furnace wall prefabricated parts and the upper furnace wall prefabricated parts are integrally formed by casting with a mold, and can be brought to the construction site and directly installed without casting and molding at multiple positions inside the smelting furnace respectively, thereby greatly saving the wall construction time and solving the problem of long construction time of the existing smelting furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of one embodiment of the internal structure of a smelting furnace proposed by the present invention;

[0045] Figure 2 It is a structural schematic diagram of one embodiment of the lower furnace wall structure construction process proposed by the present invention;

[0046] Figure 3 It is a structural schematic diagram of one embodiment of the lower furnace wall structure construction process proposed by the present invention;

[0047] Figure 4 It is a structural schematic diagram of one embodiment of the lower furnace wall structure construction process proposed by the present invention;

[0048] Figure 5 It is a top view of one embodiment of the internal structure of the smelting furnace proposed by the present invention (including the furnace bottom structure and the lower furnace wall structure);

[0049] Figure 6 It is a top view of one embodiment of the internal structure of the smelting furnace proposed by the present invention (including the upper furnace wall structure, excluding the furnace bottom structure);

[0050] Figure 7 This is a schematic diagram of one embodiment of the upper furnace wall structure construction process proposed by the present invention (for Figure 6 Right view of the upper furnace wall structure at A in the middle);

[0051] Figure 8 It is a structural schematic diagram of an embodiment of the upper furnace wall prefabricated assembly proposed by the present invention;

[0052] Fig. 9 It is a structural schematic diagram of an embodiment of the furnace bottom prefabricated part proposed by the present invention.

[0053] Wherein: furnace bottom structure 1, furnace bottom working layer 11, furnace bottom prefabricated part 111, contraction guide groove 1100, working surface 1111, support surface 1112, end surface 1113, side surface 1114, anti-leakage material 112, bottom insulation brick layer 12, lower furnace wall structure 2, lower insulation side layer 21, bottom brick layer 211, lower insulation brick layer 212, anti-leakage layer 22, lower furnace wall prefabricated assembly 23, lower furnace wall prefabricated part 231, first connecting groove 2310, lower furnace wall reinforcement 232, upper furnace wall structure 3, upper insulation side layer 31, insulation pouring layer 32, upper furnace wall prefabricated assembly 33, upper furnace wall prefabricated part 331, second connecting groove 3310, surface 3311, aligned side surface 3312, docking end surface 3313, fixing part 3314, upper furnace wall reinforcement 332, fixing rod 341, anchor hook 342, lower positioning piece 41, upper reinforcement 42 and smelting furnace shell 9. DETAILED DESCRIPTION

[0054] Embodiments of the present invention are described in detail below, 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 cannot be understood as limiting the present invention.

[0055] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features.

[0057] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The following is combined with Figures 1 to 9 The technical solution of the present invention is further illustrated by specific implementation methods.

[0059] An internal structure of a smelting furnace, arranged inside a smelting furnace shell 9, comprising: a furnace bottom structure 1, a lower furnace wall structure 2 and an upper furnace wall structure 3, wherein the furnace bottom structure 1 is horizontally arranged at the bottom of the smelting furnace shell 9, the lower furnace wall structure 2 and the upper furnace wall structure 3 are respectively arranged along the extension direction of the side wall of the smelting furnace shell 9, and the upper furnace wall structure 3 is located above the lower furnace wall structure 2;

[0060] The furnace bottom structure 1 includes a furnace bottom working layer 11 and a bottom insulation brick layer 12. The bottom surface of the bottom insulation brick layer 12 is connected to the bottom of the smelting furnace shell 9. The furnace bottom working layer 11 is arranged above the bottom insulation brick layer 12.

[0061] The lower furnace wall structure 2 includes a lower insulation side layer 21, an anti-leakage layer 22 and a lower furnace wall prefabricated assembly 23 arranged in sequence from outside to inside;

[0062] The upper furnace wall structure 3 includes an upper insulation side layer 31, an insulation pouring layer 32 and an upper furnace wall prefabricated assembly 33 which are sequentially arranged from the outside to the inside. The upper furnace wall prefabricated assembly 33 is connected to the smelting furnace shell 9 through a fixing member.

[0063] The present solution provides an internal structure of a smelting furnace, which is arranged inside the smelting furnace shell 9, including a furnace bottom structure 1 arranged at the bottom of the smelting furnace shell 9, a lower furnace wall structure 2 arranged at the lower part of the side wall of the smelting furnace shell 9, and an upper furnace wall structure 3 arranged at the upper part of the side wall of the smelting furnace shell 9. The layered design of the furnace bottom structure 1, the lower furnace wall structure 2 and the upper furnace wall structure 3 helps to solve the problem of complex and time-consuming repairs caused by the integrated structure of a traditional smelting furnace.

[0064] Specifically, the furnace bottom working layer 11 and the bottom insulation brick layer 12 in the furnace bottom structure 1 are arranged up and down, and the bottom insulation brick layer 12 is paved with insulation bricks as the base material. The insulation bricks have the characteristics of high temperature resistance and can stably carry the molten metal. They can be replaced by well-known materials with insulation functions, such as insulation boards, insulation foam balls, etc.; the insulation bricks are arranged at the bottom of the smelting furnace shell 9 and are fully laid along the range of the bottom of the smelting furnace shell 9; the furnace bottom working layer 11 is specifically in contact with the molten metal, so the furnace bottom working layer 11 is assembled with prefabricated parts to ensure the insulation effect and structural stability of the furnace bottom.

[0065] Specifically, the lower furnace wall structure 2 is composed of a lower insulation side layer 21, an anti-leakage layer 22 and a lower furnace wall prefabricated assembly 23, which are arranged and assembled in sequence from the outside to the inside. The outer side of the lower insulation side layer 21 is connected to the outer shell 9 of the smelting furnace, the inner side of the lower insulation side layer 21 is connected to the outer side of the anti-leakage layer 22, and the inner side of the anti-leakage layer 22 is connected to the lower furnace wall prefabricated assembly 23. Such a multi-layer design of the lower furnace wall structure 2 prevents leakage of materials in the smelting furnace during the smelting process and enhances the overall strength of the furnace wall. To further explain, the lower insulation side layer 21 is paved with insulation bricks as the base material. The insulation bricks have the characteristics of high temperature resistance and can stably carry the molten metal. They can be replaced by well-known materials with insulation functions, such as insulation boards, insulation foam balls, etc.; the anti-leakage layer 22 can be installed between the lower insulation side layer 21 and the lower furnace wall prefabricated assembly 23 in a direct or indirect manner; the direct manner is that the formed anti-leakage layer 22 is directly fixed to the lower insulation side layer 21 and the lower furnace wall prefabricated assembly 23 by mechanical connection; the indirect manner is that after the lower furnace wall prefabricated assembly 23 is installed along the extension direction of the lower insulation side layer 21, liquid anti-leakage material is poured into the gap between the lower insulation side layer 21 and the lower furnace wall prefabricated assembly 23, so that the anti-leakage flow material flows along the gap, fills and solidifies to form the anti-leakage layer 22, thereby realizing the connection and fixation of the anti-leakage layer 22 with the lower insulation side layer 21 and the lower furnace wall prefabricated assembly 23. Among them, anti-seepage materials are generally made of clay clinker, third-grade alumina clinker and ultrafine powder as raw materials, so that the anti-seepage materials have strong anti-permeability, low thermal conductivity and high thermal stability.

[0066] Specifically, the upper furnace wall structure 3 is composed of an upper insulation side layer 31, an insulation casting layer 32 and an upper furnace wall prefabricated assembly 33, which are sequentially arranged from outside to inside, and the upper furnace wall structure 3 is arranged above the lower furnace wall structure 2; the outer side of the upper insulation side layer 31 is connected to the outer side of the melting furnace shell 9, the inner side of the upper insulation side layer 31 is connected to the outer side of the insulation casting layer 32, and the inner side of the insulation casting layer 32 is connected to the upper furnace wall prefabricated assembly 33. The multi-layer design of the upper furnace wall structure 3 prevents the leakage of materials in the melting furnace during the melting process, and at the same time enhances the overall strength of the furnace wall. Furthermore, the upper furnace wall prefabricated assembly 33 needs to be connected and fixed to the melting furnace shell 9 by a fixing member to ensure the firm connection between the upper furnace wall prefabricated assembly 33 and the melting furnace shell 9, and avoid the problem of structural unevenness caused by differences in construction methods. Further explanation: the upper insulation side layer 31 is also paved with insulation bricks as the base material, and the insulation casting layer 32 can be installed between the upper insulation side layer 31 and the upper furnace wall prefabricated assembly 33 in a direct or indirect manner; wherein the direct manner is that the formed insulation casting layer 32 is directly fixed to the upper insulation side layer 31 and the upper furnace wall prefabricated assembly 33 by mechanical connection; wherein the indirect manner is that after the upper furnace wall prefabricated assembly 33 is installed along the extension direction of the upper insulation side layer 31, liquid insulation casting material is poured into the gap between the upper insulation side layer 31 and the upper furnace wall prefabricated assembly 33, so that the insulation casting material flows, fills and solidifies along the gap to form the insulation casting layer 32, thereby realizing the connection and fixation of the insulation casting layer 32 with the upper insulation side layer 31 and the upper furnace wall prefabricated assembly 33. wherein the insulation casting material can be the lightweight heat-insulating casting material disclosed in the Chinese patent (Announcement No.: CN102503467B).

[0067] Through the mutual coordination of the above-mentioned technical features, the problems of complex repair of traditional smelting furnaces, long overall pouring time, large construction labor force and uneven structure are solved.

[0068] Furthermore, the furnace bottom working layer 11 includes a plurality of furnace bottom prefabricated parts 111, and the plurality of furnace bottom prefabricated parts 111 are laid along the extension direction of the bottom insulation brick layer 12, and the intervals between adjacent furnace bottom prefabricated parts 111 are filled with anti-leakage material 112;

[0069] The furnace bottom prefabricated part 111 is a rectangular structure, and includes a working surface 1111, a supporting surface 1112, two end surfaces 1113 and two side surfaces 1114. The working surface 1111 is located at the top of the furnace bottom prefabricated part 111, the supporting surface 1112 is located at the bottom of the furnace bottom prefabricated part 111, the two end surfaces 1113 are parallel to each other, and the two end surfaces 1113 are respectively located at the front and rear ends of the furnace bottom prefabricated part 111, and the two side surfaces 1114 are parallel to each other, and the two side surfaces 1114 are respectively located at the left and right sides of the furnace bottom prefabricated part 111; a circle of shrinkage guide grooves 1100 are provided on the outer peripheral side of the furnace bottom prefabricated part 111 in the horizontal direction, and the shrinkage guide grooves 1100 are provided in the middle of the end surfaces 1113 and the side surfaces 1114.

[0070] By adopting the method of laying furnace bottom prefabricated parts 111 and anti-leakage materials 112 to form the furnace bottom working layer 11, on the one hand, the durability and anti-leakage performance problems of the furnace bottom of the smelting furnace are solved, and on the other hand, the cumbersome steps and long working hours of the traditional method of using on-site casting to form the furnace bottom are avoided.

[0071] refer to Fig. 9 The furnace bottom prefabricated part 111 is provided with a working surface 1111 on the top, a supporting surface 1112 on the bottom, end surfaces 1113 on the front and rear ends, and side surfaces 1114 on the left and right sides, to ensure the basic shape and size of the furnace bottom prefabricated part 111, so as to facilitate laying in the smelting furnace. The working surface 1111 and the supporting surface 1112 are parallel to each other, to ensure the stability of the furnace bottom prefabricated part 111 during laying. The outer periphery of the furnace bottom prefabricated part 111 is provided with a circle of inwardly concave shrinkage guide grooves 1100 in the horizontal direction, which helps to provide a certain buffer space when the furnace bottom prefabricated part 111 is heated and expanded, reduce the pressure and thermal stress of the furnace bottom prefabricated part 111, and prevent the furnace bottom prefabricated part from cracking or deforming due to thermal expansion, thereby improving the overall stability and service life of the furnace bottom. Further, after the furnace bottom prefabricated parts 111 are laid out according to the design plan, anti-leakage material 112 is filled between the furnace bottom prefabricated parts 111, and the liquid anti-leakage material 112 flows and fills along the intervals between the adjacent furnace bottom prefabricated parts 111, and when the anti-leakage material 112 is flush with the working surface 1111 of the furnace bottom prefabricated parts 111, the filling is stopped and the anti-leakage material 112 is waited for to solidify, and the solidified anti-leakage material 112 is used to fix several furnace bottom prefabricated parts 111 into one body to form a flat furnace bottom working layer 11. It is further explained that the design of the shrinkage guide groove 1100 of the furnace bottom prefabricated parts also reduces the possibility of aluminum liquid leakage from the furnace bottom. If there is no shrinkage guide groove 1100 around the furnace bottom preform 111 but vertical end faces and side faces, the molten aluminum will directly flow along the vertical plane of the end faces or side faces to the supporting surface 1112 (bottom surface) of the furnace bottom preform; and setting the shrinkage guide groove 1100 will extend the flow path of the molten aluminum, effectively preventing the molten aluminum from leaking to the bottom of the furnace bottom preform 111.

[0072] It is worth noting that the furnace bottom prefabricated parts 111 of the present solution are prepared from steel molds. The furnace bottom prefabricated parts 111 can be brought to the construction site for assembly and installation of the furnace bottom of the smelting furnace after preparation, or the steel mold can be brought to the construction site, and the mold can be laid first and then poured and molded as needed. The first method is to transport the solidified furnace bottom prefabricated parts 111 to the construction site, and arrange the furnace bottom prefabricated parts 111 on the bottom insulation layer 12 according to the design drawings, and then pour the anti-leakage material 112 in the interval gaps between adjacent furnace bottom prefabricated parts 111, and wait for the furnace bottom working layer 11 to be formed, that is, to complete the installation of the furnace bottom structure 1. The second method is to arrange the steel mold according to the design drawings and place it on the laid bottom insulation layer 12, pour the material into the mold, and after the material solidifies, disassemble the steel mold and recycle the steel mold; similarly, after disassembling the steel mold, pour the anti-leakage material 112 in the interval gap between adjacent furnace bottom prefabricated parts 111, and wait for the furnace bottom working layer 11 to be formed, and then complete the installation of the furnace bottom structure 1. Both of the above methods are more efficient than the original complex and time-consuming steps of block support, pouring, waiting for solidification, and demolding of the mold on site. Although the latter method also requires on-site pouring of the furnace bottom prefabricated parts after placing the steel mold, since there is no need to cut wood blocks and assemble molds on site, it improves efficiency and solves the problem of large errors of different castings; at the same time, the furnace bottom prefabricated parts 111 cast on site by the steel mold, the support surface 12 is fixedly connected to the bottom insulation layer 12, further ensuring the stability of the furnace bottom prefabricated parts 111.

[0073] Since the quality of the furnace bottom structure 1 is guaranteed and the structure is uniform and stable, it is beneficial to improve the thermal efficiency during aluminum smelting, reduce heat loss, and thus improve smelting efficiency. At the same time, the stable furnace bottom structure 1 also helps to maintain the uniformity of temperature distribution in the furnace and improve product quality.

[0074] Further, the lower insulation side layer 21 includes a bottom brick layer 211 and a lower insulation brick layer 212, the lower insulation brick layer 212 is arranged at the lower part of the inner wall of the smelting furnace shell 9, the bottom brick layer 211 is arranged at the lower part of the inner side of the lower insulation brick layer 212, and the bottom brick layer 211 and the lower insulation brick layer 212 are stepped;

[0075] The lower furnace wall prefabricated assembly 23 includes a lower furnace wall prefabricated component 231 and a lower furnace wall reinforcement component 232. A plurality of the lower furnace wall prefabricated components 231 are arranged on the inner side of the lower insulation brick layer 212 and connected to the upper side of the bottom brick layer 211. A circle of first connecting grooves 2310 are provided on the outer peripheral side of the lower furnace wall prefabricated component 231. Two adjacent lower furnace wall prefabricated components 231 are fixed together by the lower furnace wall reinforcement component 232.

[0076] The anti-leakage layer 22 is arranged between the lower furnace wall prefabricated assembly 23 and the lower insulation side layer 21 .

[0077] The bottom brick layer 211 and the lower insulation brick layer 212 in the lower insulation side layer 21 are respectively arranged at the bottom and lower part of the inner wall of the smelting furnace shell 9. Through this layered structure, the transition problem between the bottom and the side wall of the smelting furnace can be compensated, and the insulation performance of the smelting furnace can be effectively improved.

[0078] Specifically, refer to Figures 2 to 4 The smelting furnace shell 9 is located at the outermost side of the furnace body, and the lower furnace wall structure is arranged on the inner side of the smelting furnace shell 9; the lower insulation brick layer 212 is arranged along the extension direction of the inner wall of the smelting furnace shell 9, the bottom brick layer 211 is arranged at the lower part of the inner side of the lower insulation brick layer 212, and is stepped with the lower insulation brick layer 212, the lower furnace wall prefabricated parts 231 are arranged along the inner side of the lower insulation brick layer 212, and the lower furnace wall prefabricated parts 231 are installed on the upper surface of the bottom brick layer 211, so that the temperature of the lower furnace wall prefabricated parts 231 can be kept constant. The lower insulation brick layer 212 serves as the main external structure of the lower furnace wall structure 2, which can effectively reduce the influence of the temperature outside the smelting furnace shell 9 on the temperature inside the smelting furnace; the anti-leakage layer 22 is arranged between the lower furnace wall prefabricated part 231 and the lower insulation brick layer 212, which can prevent the molten metal in the lower furnace wall structure 2 from passing through the lower furnace wall prefabricated part 231 and against the lower insulation brick layer 212, thereby ensuring that the molten metal in the furnace will not penetrate, and the stability of the lower furnace wall structure of the smelting furnace is high.

[0079] The first connection groove 2310 on the outer peripheral side of the lower furnace wall prefabricated part 231 can be used to arrange the lower furnace wall reinforcement part 232 from top to bottom; the lower furnace wall prefabricated part 231 is connected to the lower furnace wall prefabricated part 231 through the lower furnace wall reinforcement part 232 of the first connection groove 2310, and the connection method can be glue fixing, welding, slot body clamping, etc.; the lower furnace wall reinforcement part 232 can be a fastener such as a screw, or a block clamped in the first connection groove 2310, or a metal structure for welding. In the best embodiment, a casting can be used as the lower furnace wall reinforcement part 232, and the casting can be cement, resin, sand and other known casting materials. When the casting solidifies, it forms a solid lower furnace wall reinforcement part 232. This embodiment can further improve the bonding degree between the lower furnace wall prefabricated part 231 and the lower furnace wall reinforcement part 232, and improve the fixing stability of the lower furnace wall prefabricated assembly 23 after bonding. To further illustrate, the lower furnace wall prefabricated part 231 is prefabricated, for example, it is prefabricated through a mold and then brought to the construction site. When in use, it is only necessary to directly set the lower furnace wall reinforcement part 232 between the two lower furnace wall prefabricated parts 231 to complete the construction. The lower furnace wall structure 2 of the smelting furnace has high molding efficiency and does not require large-scale building molding, which shortens the molding time of the internal structure of the smelting furnace. In this way, the internal structure of the smelting furnace has both thermal insulation effect and anti-leakage function. The internal structure of the smelting furnace has high stability. The prefabricated lower furnace wall prefabricated part 231 also shortens the molding time of the wall, solving the problem that the existing smelting furnace wall is easy to leak and has a long molding time.

[0080] It is worth noting that the lower furnace wall prefabricated parts 231 can include straight-edge prefabricated parts and arc-shaped prefabricated parts. The straight-edge prefabricated parts and the corner prefabricated parts are used together for assembling the furnace wall of a square melting furnace; the corner prefabricated parts can be used for assembling the furnace wall of a melting furnace including an arc shape.

[0081] Furthermore, the upper heat-insulating side layer 31 is provided on the upper part of the inner side wall of the smelting furnace shell 9;

[0082] The upper furnace wall prefabricated assembly 33 includes an upper furnace wall prefabricated assembly 331 and an upper furnace wall reinforcement 332. A plurality of the upper furnace wall prefabricated assembly 331 are arranged above the lower furnace wall prefabricated assembly 23. The outer peripheral side of the upper furnace wall prefabricated assembly 331 is provided with a circle of second connecting grooves 3310. Two adjacent upper furnace wall prefabricated assembly 331 are fixed together by the upper furnace wall reinforcement 332.

[0083] The insulation casting layer 32 is provided between the upper furnace wall prefabricated assembly 33 and the upper insulation side layer 31;

[0084] The fixing component includes a fixing rod 341 and an anchor hook 342; one end of the fixing rod 341 is connected to the smelting furnace shell 9, and the other end of the fixing rod 341 penetrates the upper insulation side layer 31 and the insulation casting layer 32 and is connected to the upper furnace wall prefabricated component 331; one end of the anchor hook 342 is connected to the smelting furnace shell 9, and the other end of the anchor hook 342 penetrates the upper insulation side layer 31 and the insulation casting layer 32 and is connected to the upper furnace wall reinforcement 332.

[0085] The upper furnace wall prefabricated assembly 33 includes an upper furnace wall prefabricated assembly 331 and an upper furnace wall reinforcement 332. A plurality of upper furnace wall prefabricated components 331 are arranged above the lower furnace wall prefabricated assembly 23. The adjacent upper furnace wall prefabricated components 331 are fixed as a whole by the upper furnace wall reinforcement 332 to form the upper furnace wall prefabricated assembly 33, thereby enhancing the stability of the upper furnace wall structure 3. The thermal insulation casting layer 32 is arranged between the upper furnace wall prefabricated assembly 33 and the upper thermal insulation side layer 31 to play a thermal insulation role and reduce heat loss.

[0086] Specifically, refer to Figure 7 and Figure 8 The upper insulation side layer 31 is the main external structure of the upper furnace wall structure 3, and has the same function as the lower insulation side layer 21, which can effectively reduce the influence of the temperature outside the smelting furnace shell 9 on the temperature inside the smelting furnace; preferably, the lower insulation side layer 21 and the upper insulation side layer 31 are an integral smelting furnace side wall insulation side layer. The insulation pouring layer 32 is arranged between the upper furnace wall prefabricated assembly 33 and the upper insulation side layer 31 to further improve the insulation effect.

[0087] The second connection groove 3310 on the outer peripheral side of the upper furnace wall prefabricated part 331 can be used to apply the upper furnace wall reinforcement part 332 from top to bottom; the adjacent lower furnace wall prefabricated parts 231 are connected by the upper furnace wall reinforcement part 332 of the second connection groove 3310, and the connection method can be glue fixing, welding, slot body clamping, clamp fixing, etc.; the upper furnace wall reinforcement part 332 can be a fastener such as a screw, or a block clamped in the second connection groove 3310, or a metal structure for welding. In the best embodiment, a cast can be used as the upper furnace wall reinforcement part 332, and the cast can be cement, resin, sand and other known casting materials. When the cast is solidified, a solid upper furnace wall reinforcement part 332 is formed. This embodiment can further improve the bonding degree between the upper furnace wall prefabricated part 331 and the upper furnace wall reinforcement part 332, and improve the fixing stability of the upper furnace wall prefabricated assembly 33 after bonding. To further illustrate, the upper furnace wall prefabricated part 331 is prefabricated, for example, it is prefabricated through a mold and then brought to the construction site. When in use, it is only necessary to directly set the upper furnace wall reinforcement part 332 between the two upper furnace wall prefabricated parts 331 to complete the construction. The upper furnace wall structure 3 of the smelting furnace has high molding efficiency, does not require large-scale building molding, and shortens the molding time of the internal structure of the smelting furnace. In this way, the internal structure of the smelting furnace has both thermal insulation effect and anti-leakage function, and the internal structure of the smelting furnace has high stability. The prefabricated upper furnace wall prefabricated part 331 also shortens the molding time of the wall, solving the problem that the existing smelting furnace wall is easy to leak and has a long molding time.

[0088] The fixing member includes a fixing rod 341 and an anchor hook 342. One end of the fixing rod 341 is connected to the smelting furnace shell 9, and the other end penetrates the upper insulation side layer 31 and the insulation casting layer 32 and is connected to the upper furnace wall prefabricated member 331; one end of the anchor hook 342 is connected to the smelting furnace shell 9, and the other end penetrates the upper insulation side layer 31 and the insulation casting layer 32 and is connected to the upper furnace wall reinforcement member 332, ensuring the stability and firmness of the upper furnace wall structure. Further explanation, the connection between the anchor hook 342 and the upper furnace wall reinforcement member 332 can make the upper furnace wall reinforcement member 332 connected to the anchor hook 342 during the solidification process of the cast, further improving the structural strength and structural stability of the upper furnace wall structure 3.

[0089] It is worth noting that the upper furnace wall prefabricated parts 331 can include straight-edge prefabricated parts and arc-shaped prefabricated parts. The straight-edge prefabricated parts and the corner prefabricated parts are used together for assembling the furnace wall of a square melting furnace; the corner prefabricated parts can be used for assembling the furnace wall of a melting furnace including an arc shape.

[0090] Furthermore, the upper furnace wall prefabricated part 331 includes two surfaces 3311, two aligned side surfaces 3312 and two butt end surfaces 3313, the two surfaces 3311 are arranged opposite to each other front to back, the two aligned side surfaces 3312 are arranged opposite to each other left to right and are respectively arranged between the two surfaces 3311, and the two butt end surfaces 3313 are arranged opposite to each other up and down and are respectively arranged between the two surfaces 3311 and the two aligned side surfaces 3312;

[0091] The second connection grooves 3310 are respectively provided on the alignment side surface 3312 and the docking end surface 3313 and are connected end to end;

[0092] The butt joint end surface 3313 at the top is provided with a fixing portion 3314 , and the fixing portion 3314 is connected to the fixing rod 341 .

[0093] The two surfaces 3311, two aligned side faces 3312 and two butt end faces 3313 of the upper furnace wall prefabricated member 331 are arranged in a specific relative parallel manner to form a rectangular parallelepiped structure, and this structural design helps to improve the stability of the upper wall prefabricated member 11. During the installation of the upper furnace wall prefabricated member 331, the aligned side faces 3312 help to align the adjacent upper furnace wall prefabricated members 331; and the butt end faces 3313 help to smoothly butt and place the upper furnace wall prefabricated member 331 with the lower furnace wall structure 2.

[0094] The second connection groove 3310 is opened along the plane where the alignment side surface 3312 and the butt end surface 3313 are located and connected end to end to form a hoisting groove, which is convenient for the use of a hoisting rope to hoist the upper furnace wall prefabricated component 331 during installation. The fixing portion 3314 of the butt end surface 3313 provided at the top provides an additional fixing point for connecting with the fixing rod 341, further enhancing the stability and connectivity of the upper furnace wall prefabricated assembly 33.

[0095] A construction process for the internal structure of a smelting furnace comprises the following steps:

[0096] Step 1, setting a lower furnace wall structure 2 along the extending direction of the inner side wall of the smelting furnace shell 9;

[0097] Step 2, a furnace bottom structure 1 is arranged along the horizontal bottom extension direction of the smelting furnace shell 9, and the peripheral side of the furnace bottom structure 1 is connected to the lower part of the lower furnace wall structure 2;

[0098] Step 3: Arrange an upper furnace wall structure 3 above the lower furnace wall structure 2 along the extending direction of the inner side wall of the smelting furnace shell 9 .

[0099] First, a lower furnace wall structure 2 is arranged along the extending direction of the inner side wall of the smelting furnace shell 9; secondly, a furnace bottom structure 1 is arranged along the extending direction of the horizontal bottom of the smelting furnace shell 9, and the peripheral side of the furnace bottom structure 1 is connected to the lower part of the lower furnace wall structure 2; finally, an upper furnace wall structure 3 is arranged above the lower furnace wall structure 2 along the extending direction of the inner side wall of the smelting furnace shell 9. These steps cooperate with each other to ensure the stability and thermal insulation performance of the internal structure of the smelting furnace.

[0100] Through the above construction process, the construction problem of the internal structure of the smelting furnace can be effectively solved. First, the lower furnace wall structure 2 is set to provide a basis for subsequent steps; secondly, the furnace bottom structure 1 is set and connected with the lower furnace wall structure 2 to ensure the stability of the overall structure; finally, the upper furnace wall structure 3 is set above the lower furnace wall structure 2 to further enhance the thermal insulation performance and structural stability of the smelting furnace.

[0101] Furthermore, the step 1 includes the following sub-steps:

[0102] Step 1-1, laying a bottom brick layer 211 and a lower insulation brick layer 212 along the inner wall of the smelting furnace shell 9, and placing a lower positioning member 41 on the inner side of the bottom brick layer 211;

[0103] refer to Figure 2 The lower insulation brick layer 212 is vertically arranged along the lower part of the inner wall of the smelting furnace shell 9, and the bottom brick layer 211 is arranged close to the lower part of the inner side of the lower insulation brick layer 212 to ensure the stable structure and insulation effect of the lower insulation side layer 21 at the transition between the bottom and the side wall of the smelting furnace.

[0104] The bottom brick layer 211 is mainly based on bricks. The bricks are resistant to high temperatures and can stably carry molten metal. The bottom brick layer 211 is preferably a clay brick layer. The clay brick layer is cheap, durable, and has the advantages of fire prevention, heat insulation, sound insulation, moisture absorption, etc. It is very suitable for large-scale use as the wall structure of the metal smelting furnace in this scheme. The lower insulation brick layer 212 can be replaced by a well-known material with insulation function, such as insulation board, insulation foam ball, insulation brick, etc. The lower insulation brick layer 212 of this scheme can be selected according to needs. In the best embodiment, the lower insulation brick layer 212 includes an insulation cotton board layer and an insulation brick body from the outside to the inside. The insulation cotton board layer is mainly a high-efficiency insulation material, which has the characteristics of light weight, oxidation resistance, low thermal conductivity, good softness, corrosion resistance, small heat capacity and sound insulation. It is very suitable as the outermost layer of the lower insulation brick layer 212; and the insulation brick body is mainly an insulation brick structure, which also has high temperature resistance.

[0105] The lower positioning member 41 is a right-angle positioning member, one right-angle side of the lower positioning member 41 is placed on the bottom of the smelting furnace, and the other right-angle side of the lower positioning member 41 is close to the front (inner) side of the bottom brick layer 211 and extends upward, which is used to limit the lower furnace wall prefabricated member 231 when the lower furnace wall prefabricated member 231 is subsequently installed.

[0106] Step 1-2, placing a plurality of lower furnace wall prefabricated parts 231 above the bottom brick layer 211, the lower furnace wall prefabricated parts 231 are arranged along the extension direction of the lower insulation brick layer 212, and the upper part of the lower furnace wall prefabricated parts 231 is limited by the upper reinforcement member 42;

[0107] refer to Figure 3 and Figure 4 , the lower furnace wall prefabricated parts 231 are arranged horizontally along the extension direction of the lower insulation side layer 21. Specifically, after applying adhesive on the top surface of the bottom brick layer 211, the lower furnace wall prefabricated parts 231 are hoisted and installed above the bottom brick layer 211. The lower positioning parts 41 are used to limit the lower furnace wall prefabricated parts 231 to prevent the lower furnace wall prefabricated parts 231 from tilting or tilting during the installation process, thereby ensuring the structural stability of the lower furnace wall structure 2 and the internal structure of the smelting furnace. After each lower furnace wall prefabricated part 231 is installed, the following is set on it: Figure 4 The upper reinforcement member 42 shown further defines the upper portion of the lower furnace wall prefabricated member 231. The upper reinforcement member 42 is a right-angle member, one end of which is connected to the smelting furnace shell 9, and the right-angle corner of the other end is clamped on the top wall and the front wall of the lower furnace wall prefabricated member 231.

[0108] Step 1-3, pouring anti-leakage material into the gap between the lower furnace wall prefabricated part 231 and the lower insulation side layer 21 to form an anti-leakage layer 22;

[0109] Specifically, there are gaps between the horizontally arranged lower furnace wall prefabricated parts 231. After the front and rear end openings of the gaps are sealed by setting a casting mold, a sealed casting channel is formed between the rear side of the lower furnace wall prefabricated part 231 and the front side of the lower insulation side layer 21. By pouring anti-leakage material into the casting channel to form an anti-leakage layer 22, the structural strength of the lower furnace wall structure 2 can be further improved, and the molten metal in the lower furnace wall structure 2 can be prevented from passing through the lower furnace wall prefabricated part 231 and against the lower insulation brick layer 212, thereby ensuring that the molten metal in the furnace will not penetrate.

[0110] Step 1-4, pouring non-stick aluminum material between adjacent lower furnace wall prefabricated parts 231 to form a lower furnace wall reinforcement part 232, and fixing several lower furnace wall prefabricated parts 231 into one body by using the solidified non-stick aluminum material;

[0111] By pouring non-stick aluminum material into the casting mold between adjacent lower furnace wall prefabricated parts 231, the casting mold is removed after the non-stick aluminum material solidifies to form the lower furnace wall reinforcement part 232. The lower furnace wall reinforcement part 232 is formed by pouring, so that the connection strength between adjacent lower furnace wall prefabricated parts 231 is higher, and the structure of the lower furnace wall structure 2 is more stable.

[0112] Step 1-5, remove the lower positioning member 41. Keep the upper reinforcement member 42 and remove the lower positioning member 41 to facilitate the stability of the lower furnace wall structure 2 during the installation of the furnace bottom structure 1 in step 2.

[0113] Furthermore, the step 2 includes the following sub-steps:

[0114] Step 2-1, arranging insulation bricks along the bottom of the smelting furnace shell 9 to form a bottom insulation brick layer 12;

[0115] Step 2-2, arranging a furnace bottom prefabricated part 111 above the bottom insulation brick layer 12;

[0116] The furnace bottom prefabricated part 111 of this solution is made of a steel mold. The furnace bottom prefabricated part 111 can be brought to the construction site for assembly and installation of the furnace bottom of the smelting furnace after preparation, or the steel mold can be brought to the construction site and cast after laying the mold as needed.

[0117] Specifically, the furnace bottom prefabricated component 111 is laid on top of the bottom insulation brick layer 12 according to the design drawings. Figure 5 As shown ( Figure 5 2 is a top view of the internal structure of the smelting furnace after the lower furnace wall structure 2 and the furnace bottom structure 1 are installed).

[0118] Step 2-3, filling the gaps between the furnace bottom prefabricated parts 111 with anti-seepage material 112, and fixing the furnace bottom prefabricated parts 111 into one body using the solidified anti-seepage material 112;

[0119] In one embodiment, the furnace bottom prefabricated member 111 is a prefabricated member that has been formed. The solidified furnace bottom prefabricated member 111 is transported to the construction site, and after the furnace bottom prefabricated member 111 is arranged and placed on the bottom insulation layer 12 according to the design drawings, the anti-leakage material 112 is poured into the interval gaps between adjacent furnace bottom prefabricated members 111, and the furnace bottom working layer 11 is formed, and the installation of the furnace bottom structure 1 is completed.

[0120] In another embodiment, the steel mold of the furnace bottom prefabricated parts is arranged according to the design drawings and placed on the laid bottom insulation layer 12. After the laying is completed, the material is poured into the mold. After the material solidifies, the steel mold is removed and recovered. Similarly, after removing the steel mold, the anti-leakage material 112 is poured into the interval gaps between adjacent furnace bottom prefabricated parts 111, and the furnace bottom working layer 11 is waited for to be formed, thus completing the installation of the furnace bottom structure 1.

[0121] By arranging insulation bricks at the bottom of the smelting furnace to form a bottom insulation brick layer 12, a basic heat insulation effect is provided. On this basis, furnace bottom prefabricated parts 111 and anti-leakage materials 112 are poured to form a furnace bottom working layer 11 to ensure the structural integrity of the furnace bottom. By filling and solidifying anti-leakage materials between prefabricated parts, the anti-leakage performance and overall stability of the furnace bottom are further enhanced. These steps cooperate with each other to ensure the reliability and durability of the furnace bottom structure in a high temperature environment.

[0122] Further, refer to Figures 6 to 8 , the step 3 comprises the following sub-steps:

[0123] Step 3-1, welding the anchor hook 342 on the inner wall of the smelting furnace shell 9, and applying the insulation side layer 31 along the inner wall of the smelting furnace shell 9;

[0124] The upper insulation side layer 31 is vertically arranged along the upper part of the inner wall of the smelting furnace shell 9. Specifically, the upper insulation side layer 31 is located above the lower insulation side layer 21; more preferably, the upper insulation side layer 31 and the lower insulation side layer 21 are insulation side layers connected to the inner wall of the smelting furnace shell 9. The upper insulation side layer 31 ensures the structural stability and insulation effect of the upper furnace wall structure 3.

[0125] One end of the anchor hook 342 is welded to the outer shell 9 of the smelting furnace, and the other end passes through the upper insulation side layer 31 and extends into the furnace.

[0126] Step 3-2, placing a plurality of upper furnace wall prefabricated parts 331 respectively above the lower furnace wall structure 2;

[0127] Specifically, horizontal wooden strips are arranged on the upper furnace wall structure 3, and lower positioning pieces are arranged on the horizontal wooden strips; high-temperature adhesive is applied to the top surface of the lower furnace wall structure 2 (lower furnace wall prefabricated part 231), and the upper furnace wall prefabricated part 331 is hoisted and installed thereon, wherein anchor hooks 342 are arranged in the intervals between the two upper furnace wall prefabricated parts 331.

[0128] Step 3-3, welding one end of the fixing rod 341 to the inner wall of the smelting furnace shell 9, and fixing the upper furnace wall prefabricated part 331 by using the fixing rod 341;

[0129] After the upper furnace wall prefabricated part 331 is preliminarily installed, one end of the fixing rod 341 is welded to the smelting furnace shell 9, and the other end of the fixing rod 341 is connected to the top of the upper furnace wall prefabricated part 331, so that the upper furnace wall prefabricated part 331 is relatively fixed up and down. The fixing rod 341 and the upper furnace wall prefabricated part 331 can be connected by welding, clamping, clamping, etc.

[0130] Step 3-4, pouring insulation material into the gap between the upper furnace wall prefabricated part 331 and the upper insulation side layer 31 to form an insulation pouring layer 32;

[0131] Specifically, there is a gap between the horizontally arranged upper furnace wall prefabricated parts 331, and the anchor hook 342 is located in the gap. After the front and rear end openings of the gap are blocked by setting a casting mold, a sealed casting channel is formed between the rear side of the upper furnace wall prefabricated part 331 and the front side of the upper insulation side layer 31. By pouring insulation material into the casting channel to form an insulation casting layer 32, the insulation effect can be further improved.

[0132] Step 3-5, pouring low cement castables at intervals between adjacent upper furnace wall prefabricated members 331 to form upper furnace wall reinforcement members 332, and fixing several upper furnace wall prefabricated members 331 into one body by using the solidified low cement castables;

[0133] By pouring low cement casting material into the casting mold between the adjacent upper furnace wall prefabricated parts 331, the casting mold is removed after the non-stick aluminum material solidifies to form the upper furnace wall reinforcement part 332. The upper furnace wall reinforcement part 332 is formed by pouring, so that the connection strength between the adjacent upper furnace wall prefabricated parts 331 is higher, and the structure of the upper furnace wall structure 3 is more stable; secondly, since the upper furnace wall reinforcement part 332 is formed by pouring and solidifying, the anchor hook 342 is tightly connected to the upper furnace wall reinforcement part 332, further strengthening the structural strength of the upper furnace wall structure 3. Among them, the low cement casting material can adopt the non-stick aluminum ultra-low cement casting material disclosed in the Chinese patent (publication number: CN117401959A).

[0134] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. An internal structure of a smelting furnace, arranged inside a smelting furnace shell, characterized in that: include: A furnace bottom structure, a lower furnace wall structure and an upper furnace wall structure, wherein the furnace bottom structure is horizontally arranged at the bottom of the outer shell of the smelting furnace, the lower furnace wall structure and the upper furnace wall structure are respectively arranged along the extension direction of the side wall of the outer shell of the smelting furnace, and the upper furnace wall structure is located above the lower furnace wall structure; The furnace bottom structure includes a furnace bottom working layer and a bottom insulation brick layer, the bottom surface of the bottom insulation brick layer is connected to the bottom of the smelting furnace shell, and the furnace bottom working layer is arranged above the bottom insulation brick layer; The lower furnace wall structure comprises a lower insulation side layer, an anti-leakage layer and a lower furnace wall prefabricated assembly which are arranged in sequence from outside to inside; The upper furnace wall structure comprises an upper insulation side layer, an insulation pouring layer and an upper furnace wall prefabricated assembly which are sequentially arranged from the outside to the inside. The upper furnace wall prefabricated assembly is connected to the outer shell of the smelting furnace through a fixing component.

2. The internal structure of a smelting furnace according to claim 1, characterized in that: The furnace bottom working layer includes a plurality of furnace bottom prefabricated parts, and the plurality of furnace bottom prefabricated parts are laid along the extension direction of the bottom insulation brick layer, and the intervals between adjacent furnace bottom prefabricated parts are filled with anti-leakage material; The furnace bottom prefabricated component is a rectangular structure, and the furnace bottom prefabricated component includes a working surface, a supporting surface, two end surfaces and two side surfaces, the working surface is located at the top of the furnace bottom prefabricated component, the supporting surface is located at the bottom of the furnace bottom prefabricated component, the two end surfaces are parallel to each other, and the two end surfaces are respectively located at the front and rear ends of the furnace bottom prefabricated component, the two side surfaces are parallel to each other, and the two side surfaces are respectively located at the left and right sides of the furnace bottom prefabricated component; a circle of shrinkage guide grooves are provided on the outer peripheral side of the furnace bottom prefabricated component in the horizontal direction, and the shrinkage guide grooves are provided in the middle of the end surfaces and the side surfaces.

3. The internal structure of a smelting furnace according to claim 1, characterized in that: The lower insulation side layer includes a bottom brick layer and a lower insulation brick layer, the lower insulation brick layer is arranged at the lower part of the inner side wall of the smelting furnace shell, the bottom brick layer is arranged at the lower part of the inner side of the lower insulation brick layer, and the bottom brick layer and the lower insulation brick layer are stepped; The lower furnace wall prefabricated assembly comprises a lower furnace wall prefabricated member and a lower furnace wall reinforcement member. A plurality of the lower furnace wall prefabricated members are arranged on the inner side of the lower insulation brick layer and connected to the upper side of the bottom brick layer. A circle of first connecting grooves is provided on the outer peripheral side of the lower furnace wall prefabricated member. Two adjacent lower furnace wall prefabricated members are fixed together by the lower furnace wall reinforcement member. The anti-leakage layer is arranged between the lower furnace wall prefabricated assembly and the lower insulation side layer.

4. The internal structure of a smelting furnace according to claim 1, characterized in that: The upper heat-insulating side layer is arranged on the upper part of the inner side wall of the outer shell of the smelting furnace; The upper furnace wall prefabricated assembly comprises an upper furnace wall prefabricated assembly and an upper furnace wall reinforcement member. A plurality of the upper furnace wall prefabricated assembly are arranged above the lower furnace wall prefabricated assembly. A circle of second connecting grooves is arranged on the outer circumference of the upper furnace wall prefabricated assembly. Two adjacent upper furnace wall prefabricated assembly are fixed together by the upper furnace wall reinforcement member. The thermal insulation pouring layer is arranged between the upper furnace wall prefabricated assembly and the upper thermal insulation side layer; The fixing component includes a fixing rod and an anchor hook; one end of the fixing rod is connected to the outer shell of the smelting furnace, and the other end of the fixing rod penetrates the upper insulation side layer and the insulation casting layer and is connected to the upper furnace wall prefabricated component; one end of the anchor hook is connected to the outer shell of the smelting furnace, and the other end of the anchor hook penetrates the upper insulation side layer and the insulation casting layer and is connected to the upper furnace wall reinforcement.

5. The internal structure of a smelting furnace according to claim 4, characterized in that: The upper furnace wall prefabricated component comprises two surfaces, two aligned side surfaces and two butt end surfaces, the two surfaces are arranged opposite to each other front and back, the two aligned side surfaces are arranged opposite to each other left and right and are respectively arranged between the two surfaces, and the two butt end surfaces are arranged opposite to each other up and down and are respectively arranged between the two surfaces and the two aligned side surfaces; The second connecting grooves are respectively arranged on the alignment side surface and the butt end surface, and are connected end to end; The butt joint end surface of the top is provided with a fixing portion, and the fixing portion is connected to the fixing rod.

6. A construction process for the internal structure of a smelting furnace, characterized in that: The following steps are involved: Step 1, setting a lower furnace wall structure along the extension direction of the inner side wall of the smelting furnace shell; Step 2, a furnace bottom structure is arranged along the horizontal bottom extension direction of the smelting furnace shell, and the peripheral side of the furnace bottom structure is connected to the lower part of the lower furnace wall structure; Step 3: Arrange an upper furnace wall structure above the lower furnace wall structure along the extension direction of the inner side wall of the smelting furnace shell.

7. The construction process of the internal structure of a smelting furnace according to claim 6, characterized in that: In the step 1, The following steps are included: Step 1-1, laying a bottom brick layer and a lower insulation brick layer along the inner wall of the smelting furnace shell, and placing a lower positioning piece on the inner side of the bottom brick layer; Step 1-2, placing a plurality of lower furnace wall prefabricated parts respectively above the bottom brick layer, the lower furnace wall prefabricated parts are arranged along the extension direction of the lower insulation brick layer, and the upper part of the lower furnace wall prefabricated parts is limited by the upper reinforcement member; Step 1-3, pouring anti-leakage material into the gap between the lower furnace wall prefabricated part and the lower insulation side layer to form an anti-leakage layer; Step 1-4, pouring non-stick aluminum material between adjacent lower furnace wall prefabricated parts to form a lower furnace wall reinforcement part, and fixing several lower furnace wall prefabricated parts into one body by using the solidified non-stick aluminum material; Step 1-5: Remove the lower positioning piece.

8. The construction process of the internal structure of a smelting furnace according to claim 6, characterized in that: In the step 2, The following steps are included: Step 2-1, arranging insulation bricks along the bottom of the smelting furnace shell to form a bottom insulation brick layer; Step 2-2, placing a furnace bottom prefabricated component above the bottom insulation brick layer; Step 2-3: filling the gaps between the furnace bottom prefabricated parts with anti-seepage material, and fixing the furnace bottom prefabricated parts together using the solidified anti-seepage material.

9. The construction process of the internal structure of a smelting furnace according to claim 6, characterized in that: In step 3, The following steps are included: Step 3-1, welding anchor hooks on the inner wall of the smelting furnace shell, and applying a heat-insulating side layer along the inner wall of the smelting furnace shell; Step 3-2, placing a plurality of upper furnace wall prefabricated parts respectively on top of the lower furnace wall structure; Step 3-3, welding one end of the fixing rod to the inner wall of the outer shell of the smelting furnace, and fixing the upper furnace wall prefabricated part by using the fixing rod; Step 3-4, pouring insulation material into the gap between the upper furnace wall prefabricated part and the upper insulation side layer to form an insulation pouring layer; Step 3-5: pour low cement castables at intervals between adjacent upper furnace wall prefabricated parts to form upper furnace wall reinforcement parts, and use the solidified low cement castables to fix several upper furnace wall prefabricated parts into one.

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