An assembled slag chute

Abstract

The utility model discloses an assembly type slag channel relates to metal smelting slag channel technical field, including the groove body, and the groove body inlet end forms the main groove, separates the component, separates the component and fixes in the groove body inside, and the groove body export end is separated and forms with the main groove intercommunication individual branch passage, and is located branch passage both sides'sub -channel, wherein, the branch passage is paved with the refractory layer of preset thickness, is used for realizing the shunt of the slag, the pressing plate, and the pressing plate is detachably connected with the top edge of main groove and sub -channel respectively through detachable connecting structure, and the pressing plate forms the installation cavity for installing the refractory lining plate with the side wall of main groove and sub -channel respectively, through with the groove body is divided into main groove, sub -channel and is separated by the component and constitutes branch passage, has realized the modularization design of slag channel, and makes the refractory lining plate can be installed and replaced in the partition, independently, when the local lining plate is damaged, need not to replace or repair entire slag channel, only needs to remove the corresponding pressing plate and replaces the lining plate.

Description

Technical Field

[0001] This utility model relates to the field of slag trough technology in metal smelting, and more specifically to an assembled slag trough. Background Technology

[0002] In the smelting of non-ferrous metals (such as tin, copper, and lead) and ferrous metals, the guiding and handling of high-temperature molten slag is a critical production step. The slag trough, as the core equipment for carrying and transporting high-temperature slag, directly affects production efficiency and cost.

[0003] Currently, most slag troughs used in the industry are integrally cast or welded structures. This traditional structure has the following main technical drawbacks:

[0004] First, the maintenance cost is extremely high and inconvenient. Most existing slag troughs adopt a one-time casting structure. The refractory lining inside the slag trough will gradually be damaged by the severe scouring and chemical erosion of the high-temperature molten slag. Since the composition and temperature of the slag vary greatly in actual production, the erosion is often concentrated in local areas. After local erosion, since the slag trough cannot be disassembled, the entire slag trough has to be replaced, which not only wastes a lot of resources, but also significantly increases the maintenance cost.

[0005] Secondly, it lacks flexibility and adaptability; the structure of the integral slag trough limits its adaptability under different working conditions; in actual production, different metal smelting has different requirements for refractory materials, but the existing slag trough is difficult to quickly replace or adjust the lining material as needed.

[0006] Therefore, how to provide a prefabricated slag chute that can achieve rapid and partial replacement of the lining and has flexible and reliable diversion function is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the present invention provides an assembled slag trough, which aims to solve the above-mentioned technical problems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A prefabricated slag trough, comprising:

[0010] A tank having an inlet end and an outlet end, with a main tank formed at the inlet end;

[0011] A dividing component is fixed inside the tank body and divides the outlet end of the tank body to form a diversion channel communicating with the main tank, and a sub-slot located on both sides of the diversion channel; wherein, a refractory layer of a preset thickness is laid on the diversion channel to realize the diversion of convective slag;

[0012] The pressure plate is detachably connected to the top edge of the main groove and the sub-groove via a detachable connection structure. The pressure plate forms an installation cavity with the side wall of the main groove and the sub-groove for installing the fire-resistant lining plate.

[0013] Through the above technical solution, this utility model provides a prefabricated slag trough, which achieves a modular design by dividing the trough into a main trough and sub-troughs, with the diversion channels formed by the separating components. Combined with detachable pressure plates, the refractory liners can be installed and replaced independently in sections. When a local liner is damaged, there is no need to replace or repair the entire slag trough; only the corresponding pressure plate needs to be removed and the liner replaced, greatly reducing maintenance costs and time and improving equipment lifespan. The structure of the diversion channels and sub-troughs allows for adjustment of the diversion ratio and wear-resistant and high-temperature performance by laying refractory layers of different materials or thicknesses according to actual needs (such as slag volume and slag temperature), enhancing the equipment's adaptability to different working conditions. Simultaneously, while ensuring detachability, the prefabricated structure, through the fixedly connected separating components and trough, ensures the rigidity and stability of the overall structure, enabling it to withstand the impact and load of high-temperature molten slag.

[0014] Preferably, in the above-mentioned assembled slag trough, the detachable connection structure includes L-shaped connecting lugs and fastening bolts. The vertical plates of the L-shaped connecting lugs are fixed to the side walls of the main trough and the sub-trough, respectively. The horizontal plate of the L-shaped connecting lugs abuts against the top edge of the side walls of the main trough and the sub-trough. The fastening bolts pass through the pressure plate and the horizontal plate in sequence to press the refractory lining into the installation cavity. The vertical plates of the L-shaped connecting lugs, fixed to the side walls, provide a solid connection base; the horizontal plate abuts against the top edge, providing a stable support plane for the pressure plate. The pressure applied by the fastening bolts is evenly transmitted to the refractory lining through the pressure plate, not only firmly fixing it but also enhancing the sealing of the installation cavity, preventing molten slag from seeping out from the gaps and corroding the equipment body. Bolted connection is a standard detachable connection method, and the pressure plate can be installed and removed using simple tools, further realizing the rapid replacement of the refractory lining and simplifying the maintenance process.

[0015] Preferably, in the above-mentioned assembled slag chute, the detachable connection structure further includes an elastic gasket installed between the pressure plate and the fastening bolts. The elastic gasket (such as a spring washer) can effectively prevent the fastening bolts from loosening under long-term vibration or thermal expansion and contraction conditions, maintaining the necessary preload and ensuring the long-term reliability of the connection; stress buffering: the gasket can also buffer the local stress between the pressure plate and the bolt head to a certain extent, avoiding excessive clamping force that could cause cracking of the refractory lining or the pressure plate itself.

[0016] Preferably, in the above-mentioned assembled slag chute, baffles are fixed at the ends of both the main chute and the sub-chute. The baffles, the pressure plates, and the sidewalls of the main chute or the sub-chute together form the mounting cavity. The baffles, sidewalls, and pressure plates form a three-dimensional enclosing structure of "sidewall-baffle-pressure plate," which enhances sealing performance and impact resistance compared to traditional planar pressing methods.

[0017] Preferably, in the above-mentioned prefabricated slag trough, the partitioning component includes at least two parallel partition plates. The diversion channel is formed between two adjacent partition plates inside the trough, and the slots are formed between the partition plates and the sidewalls of the trough. Using parallel partition plates as the partitioning component results in a simple structure that is easy to manufacture and install. By adjusting the number and spacing of the partition plates, the width of the slots and diversion channels can be flexibly configured, achieving standardization and serialization of the design.

[0018] Preferably, in the above-mentioned assembled slag flow tank, the diversion channel coincides with the central axis of the main tank. This alignment ensures smooth and symmetrical flow of molten slag as it enters the diversion channel from the main tank, reducing flow resistance and impact wear on the tank body and lining, and facilitating uniform slag distribution.

[0019] Preferably, in the above-mentioned assembled slag trough, the trough body is a trough structure composed of a bottom plate and side plates, and the partition plate is fixed to the bottom plate. Directly fixing the partition plate to the bottom plate forms a solid support, ensuring that the partition plate does not shift or deform under the scouring of high-temperature molten slag, thus guaranteeing the long-term stability and reliability of the diversion structure.

[0020] Preferably, in the above-mentioned assembled slag trough, the bottom of the diversion channel on the side away from the main channel has a through opening. The technical effects of opening a through opening on the bottom plate at the tail end of the diversion channel are: active cooling: the exposed molten slag column can directly contact the outside air, greatly enhancing the heat dissipation and cooling effect of this area, promoting the formation of slag shell, and protecting the equipment foundation below; prevention of blockage: even if a small amount of molten slag solidifies at the through opening, it will easily fall off under its own weight or the impact of subsequent slag flow due to the suspended space below, avoiding the risk of complete blockage at the tail end of the diversion channel due to slag accumulation.

[0021] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a prefabricated slag trough, which has the following beneficial effects:

[0022] 1. This utility model achieves efficient maintenance and functional adaptation of the slag trough through modular design of the trough body and partition components. The detachable pressure plate and connection structure enable the refractory lining to be replaced quickly in sections, solving the problem of traditional integral slag troughs being scrapped due to partial damage. This significantly reduces maintenance costs and time and extends the service life of the equipment.

[0023] 2. The design of the diversion channel and the main tank being coaxial ensures smooth and uniform slag flow and reduces impact wear. The unique through-hole structure at the end of the channel greatly enhances heat dissipation efficiency, promotes slag shell formation to protect the basic equipment, and effectively prevents slag accumulation and blockage, thereby improving production continuity and safety.

[0024] 3. The L-shaped ear plate and bolt fastening connection method of this utility model ensures the firmness and sealing of the pressure plate, and the elastic gasket design effectively resists the effects of vibration and thermal stress. The reinforced arrangement of the baffle and partition plate enhances the overall structural rigidity, enabling this assembled slag chute to maintain excellent stability and adaptability under high-temperature scouring environment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 The attached figure is a structural schematic diagram of the assembled slag trough provided by this utility model;

[0027] Figure 2 The attached figure is a top view of the assembled slag trough provided by this utility model.

[0028] in:

[0029] 1-Tank body; 11-Bottom plate; 12-Side plate; 2-Main tank; 3-Divider assembly; 31-Divider plate; 4-Diversion channel; 41-Through opening; 5-Divider tank; 6-Pressure plate; 7-Installation cavity; 8-L-shaped connecting plate; 81-Vertical plate; 82-Horizontal plate; 9-Baffle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] See appendix Figure 1 -Appendix Figure 2 This utility model discloses an assembled slag trough, comprising:

[0032] Tank 1 has an inlet end and an outlet end, and its inlet end forms a main tank 2;

[0033] The dividing component 3 is fixed inside the tank 1 and divides the outlet end of the tank 1 to form a diversion channel 4 that communicates with the main tank 2, and the dividing channels 5 located on both sides of the diversion channel 4; wherein, the diversion channel 4 is covered with a refractory layer of a preset thickness to achieve the diversion of convective slag.

[0034] The pressure plate 6 is detachably connected to the top edge of the main groove 2 and the sub-groove 5 respectively through a detachable connection structure. The pressure plate 6 forms an installation cavity 7 for installing the fire-resistant lining plate with the side wall of the main groove 2 and the sub-groove 5 respectively.

[0035] In some specific examples, the detachable connection structure includes an L-shaped connecting lug 8 and fastening bolts. The vertical plate 81 of the L-shaped connecting lug 8 is fixed to the side wall of the main groove 2 and the sub-groove 5 respectively. The horizontal plate 82 of the L-shaped connecting lug 8 abuts against the top edge of the side wall of the main groove 2 and the sub-groove 5. The fastening bolts pass through the pressure plate 6 and the horizontal plate 82 in sequence to press the fire-resistant lining into the installation cavity 7.

[0036] In some other embodiments, the detachable connection structure also includes an elastic gasket installed between the pressure plate 6 and the fastening bolts.

[0037] In a specific embodiment, baffles 9 are fixed at the ends of both the main groove 2 and the sub-groove 5. The baffles 9, the pressure plate 6, and the sidewalls of the main groove 2 or the sub-groove 5 together form an installation cavity 7.

[0038] More specifically, the baffle 9 is welded to the end of each tank body and is made of Q345B. Together with the side plate 12 / partition plate 31, bottom plate 11 and pressure plate 6, it forms a closed box structure, which greatly enhances the end's resistance to mechanical impact and slag flow erosion.

[0039] In other embodiments, the baffle 9 fixed at the inlet end of the main channel 2 is also provided with threaded holes, which can be connected to other slag troughs.

[0040] In a specific example, the partition component 3 includes at least two parallel partition plates 31, with a diversion channel 4 formed between two adjacent partition plates 31 inside the tank 1, and a trough 5 formed between the partition plates 31 and the side wall of the tank 1.

[0041] In some examples, the diversion channel 4 coincides with the central axis of the main channel 2.

[0042] More specifically, the width of the diversion channel 4 is smaller than the width of the slot 5.

[0043] More specifically, the tank 1 is a tank structure consisting of a bottom plate 11 and a side plate 12, with the partition plate 31 fixed on the bottom plate 11.

[0044] In some specific examples, the tank 1 is welded from a bottom plate 11 and side plates 12, preferably made of Q345B low-alloy high-strength structural steel, whose good high-temperature strength and weldability ensure the stability of the main structure. The overall dimensions of the tank 1 can be designed according to the slag output of the smelting furnace, with a length typically ranging from 3 to 8 meters and a width from 0.8 to 1.5 meters, or determined according to actual needs.

[0045] In some other embodiments, the partition plate 31 is preferably made of the same Q345B steel as the tank 1 and is fixed to the base plate 11 by welding.

[0046] In some specific examples, the bottom of the diversion channel 4 on the side away from the main channel 2 is provided with a through opening 41.

[0047] More specifically, the width of the through-hole 41 is the same as the net width inside the diversion channel 4; this design suspends the slag column in this area, allowing for efficient cooling through direct contact with air, which promotes the rapid formation of the slag shell. This not only protects the equipment foundation below but also achieves self-cleaning by utilizing the slag shell's own weight to fall off, effectively preventing channel blockage.

[0048] In a specific embodiment, the included angle between the sub-slot 5 and the main slot 2 is β, 90°≤β≤135°; the corners of the sub-slot 5 are all γ, 90°≤γ≤135°; this structural arrangement can significantly reduce the flow resistance, turbulence and impact wear on the tank wall / liner of the molten slag at the bends.

[0049] It should be noted that the material parameters and other information of each component in this embodiment are just examples and can be determined or replaced according to one's own situation to meet the requirements.

[0050] The embodiments of this utility model are as follows:

[0051] See appendix Figure 1 -Appendix Figure 2The core working principle of the prefabricated slag flow trough disclosed in this utility model is as follows: High-temperature molten slag enters from the main channel 2 at the inlet end of the trough body 1 and flows towards the outlet end along the main channel 2, flowing to the separation component 3 at the outlet end; the separation component 3 guides the slag flow, and the refractory layer laid on the diversion channel 4 can withstand the high-temperature scouring of the mainstream slag stream and achieve the sealing of the flowing slag, realizing the diversion of liquid slag. Part of it continues to flow forward through the diversion channel 4, and the other part is diverted to the two side channels 5. The through-hole 41 set at the tail of the diversion channel 4 can significantly enhance the cooling effect of the area and prevent slag accumulation; throughout the process, the refractory lining plate in the installation cavity 7, which is formed by the pressure plate 6, baffle 9 and side plate 12 or separation plate 31, provides the core anti-erosion protection for the trough body 1; the refractory lining plate laid in the installation cavity 7 can be selected differently according to the part in contact with the slag flow and the temperature. For example, the bottom of the main tank 2 and the area of ​​the diversion channel 4 are subject to high impact and high temperature, so high alumina ramming material or precast parts with an Al2O3 content of ≥75% can be selected, with a thickness of 150-200mm; the side walls and the area of ​​the sub-tank 5 can be selected with refractory castable with an Al2O3 content of 50-60%, with a thickness of 100-150mm; this modular lining design allows for local replacement after local damage, which greatly saves maintenance costs.

[0052] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A prefabricated slag trough, characterized in that, include: The tank (1) has an inlet end and an outlet end, and a main tank (2) is formed at its inlet end; A dividing component (3) is fixed inside the tank (1) and divides the outlet end of the tank (1) to form a diversion channel (4) that communicates with the main tank (2), and a dividing trough (5) located on both sides of the diversion channel (4); wherein, a refractory layer of a preset thickness is laid on the diversion channel (4) to realize the diversion of convective slag; The pressure plate (6) is detachably connected to the top edge of the main groove (2) and the sub-groove (5) respectively through a detachable connection structure. The pressure plate (6) forms an installation cavity (7) for installing the fire-resistant lining plate with the side wall of the main groove (2) and the sub-groove (5) respectively.

2. The assembled slag trough according to claim 1, characterized in that, The detachable connection structure includes an L-shaped connecting ear plate (8) and fastening bolts. The vertical plate (81) of the L-shaped connecting ear plate (8) is fixed to the side wall of the main groove (2) and the sub-groove (5) respectively. The horizontal plate (82) of the L-shaped connecting ear plate (8) abuts against the top edge of the side wall of the main groove (2) and the sub-groove (5). The fastening bolts pass through the pressure plate (6) and the horizontal plate (82) in sequence to press the fire-resistant lining plate into the mounting cavity (7).

3. The assembled slag trough according to claim 2, characterized in that, The detachable connection structure also includes an elastic gasket installed between the pressure plate (6) and the fastening bolt.

4. A prefabricated slag trough according to claim 1, characterized in that, Both the main groove (2) and the sub-groove (5) are fixed with baffles (9), and the baffles (9), the pressure plate (6), and the side wall of the main groove (2) or the sub-groove (5) together form the mounting cavity (7).

5. A prefabricated slag trough according to claim 1, characterized in that, The partition assembly (3) includes at least two parallel partition plates (31), and the diversion channel (4) is formed between two adjacent partition plates (31) inside the tank (1), and the partition plate (31) forms the trough (5) with the side wall of the tank (1).

6. A prefabricated slag trough according to claim 5, characterized in that, The diversion channel (4) coincides with the central axis of the main channel (2).

7. A prefabricated slag trough according to claim 5, characterized in that, The trough (1) is a trough structure consisting of a bottom plate (11) and a side plate (12), and the partition plate (31) is fixed on the bottom plate (11).

8. A prefabricated slag trough according to claim 1, characterized in that, The bottom of the diversion channel (4) on the side away from the main channel (2) is provided with a through opening (41).

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