A detachable spout for a side-blown smelting furnace

Abstract

The utility model discloses a detachable chute for side-blown smelting furnace, including guide groove, damming slag board and side connecting plate, the guide groove main part is the guide plate, and both sides of guide plate are fixedly connected with side plate respectively, the damming slag board is arc baffle, and the outer periphery of arc baffle is provided with support plate along bottom annular, and both sides are connected side connecting plate respectively in the position close to bottom, and the other end of side connecting plate is fixedly connected with side plate, wherein side connecting plate and damming slag board are connected, and form the hole of falling slag in the middle. The utility model discloses through with the idle wind eye cooperation realizes the emergency deslagging, and the chute is composed of guide groove, damming slag board and side connecting plate, can be installed in the wind eye place fast, utilizes the refractory sealing material and the furnace body connection, realizes the safe deslagging, and after the deslagging end, can remove fast, restores the wind eye air supply function, solves the traditional deslagging mouth few, the poor emergency capability, the high security risk, the idle problem of wind eye.

Description

Technical Field

[0001] This utility model relates to the field of slag discharge technology for side-blown smelting furnaces, specifically to a detachable chute for side-blown smelting furnaces. Background Technology

[0002] Side-blown smelting furnaces are key equipment in modern metallurgical industries, and the rationality of their tuyeres and slag discharge system design directly affects the safety, continuity, and economy of production. Currently, traditional side-blown smelting furnace structures typically only have 1-2 fixed slag discharge ports. This design has gradually revealed many shortcomings in long-term operation, mainly in the following aspects: Firstly, the existing design has significant shortcomings in terms of both safety and production efficiency during slag removal operations. Due to the unstable slag pattern and the tendency of the melt to splash during smelting, coupled with potentially flawed designs for the fixed chute, the chute is prone to slag adhesion, necessitating frequent production interruptions for cleaning. Operators must perform cleaning operations at close range of the high-temperature molten metal, facing not only severe burns and splashing risks, but also significant disruptions to the continuity of the smelting process due to frequent interruptions, leading to reduced production efficiency and posing major safety hazards.

[0003] Secondly, there is a contradiction in the traditional design regarding the utilization of the tuyere function and resource recovery. To avoid severe erosion of the slag chamber partition walls by individual tuyeres near the slag chamber during normal smelting operations, which would accelerate the corrosion of the refractory materials and shorten the furnace life, these tuyeres are usually prohibited from use, resulting in idle equipment. However, in emergency situations, these tuyeres must be restarted for emergency discharge. This start-up and shutdown operation severely disturbs the molten metal inside the furnace, causing a large amount of valuable metal to be lost in the tailings due to entrainment, resulting in significant economic losses and increased production costs.

[0004] Finally, the existing system lacks flexibility in handling special operating conditions and carries a high risk. For example, when restarting the furnace after a long shutdown, the cold charge inside the furnace is prone to solidification and blockage of the fixed slag discharge channel. If the existing bottom discharge port is relied upon for discharge, it will be cumbersome, time-consuming, energy-intensive, and uneconomical, seriously delaying the resumption of production. In addition, when the main copper discharge port malfunctions or the main chute is blocked, there is a lack of efficient and rapid emergency discharge methods, making it impossible to quickly guide the molten material in the furnace into the safety pit. This may lead to the accident escalating due to untimely handling, causing greater production losses.

[0005] In summary, the existing slag discharge and tuyeres mechanisms of side-blown smelting furnaces have shortcomings in terms of safety, production efficiency, resource utilization, and emergency response capabilities that urgently need improvement. Therefore, there is an urgent need in this field for an innovative solution that can functionalize idle tuyeres without requiring large-scale modifications to the furnace body, enabling them to also perform emergency discharge, thereby overcoming the deficiencies of existing technologies. Summary of the Invention

[0006] In view of the shortcomings of traditional side-blown smelting furnaces, such as few slag discharge ports, single-function tuyeres, and inability to perform emergency slag discharge, this utility model provides a detachable chute for side-blown smelting furnaces that is easy to cooperate with its tuyeres for slag discharge.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A detachable chute for a side-blown smelting furnace includes a guide chute, a slag baffle plate, and a side connecting plate. The guide chute is mainly composed of a guide plate, and side plates are fixedly connected to both sides of the guide plate. The slag baffle plate is an arc-shaped baffle plate, and a support plate is provided around the bottom of the arc-shaped baffle plate. The side connecting plates are connected to both sides near the bottom, and the other end of the side connecting plate is fixedly connected to the side plate. The side connecting plate and the slag baffle plate are connected, forming a slag discharge hole in the middle.

[0008] Furthermore, the guide plate has a U-shaped cross-section. Designing the guide plate with a U-shaped cross-section can enhance the overall structural strength and rigidity of the chute, improve its resistance to high-temperature deformation, and at the same time, the U-shaped cross-section facilitates smooth flow of melt, reduces the risk of slag buildup and blockage, improves slag discharge stability, and extends the service life of the chute.

[0009] Furthermore, a lifting ring is fixedly installed on the top of the outer side of the baffle plate. The lifting ring facilitates the overall hoisting and positioning of the chute using lifting equipment, significantly improving installation and dismantling efficiency, reducing manual operation intensity and safety risks, while ensuring that the chute is accurately and stably positioned when connecting to the vent, thus improving operational safety and convenience.

[0010] Furthermore, a connecting plate is fixedly welded to the outer side of the top of the guide trough. The connecting plate is used for quick positioning and auxiliary fixing with the furnace body or supporting structure, enhancing the overall stability of the chute after installation, preventing displacement caused by molten impact during slag discharge, and facilitating quick assembly and disassembly with bolts or clamps, thereby improving operational efficiency and safety.

[0011] Furthermore, a hydraulic cylinder is also provided at the bottom of the guide trough. The top of the hydraulic cylinder is fixedly connected to the bottom of the guide plate via a movable hinge, and a base plate is provided at the bottom. The hydraulic cylinder is supplied with oil through an external hydraulic system. By adjusting the extension and retraction of the hydraulic cylinder, the tilt angle of the chute can be adjusted to adapt to the slag discharge requirements under different working conditions. This ensures smooth flow of the melt and accurate introduction into the slag pit, while also facilitating quick adjustment of the docking accuracy with the air vent, improving operational flexibility and safety, and realizing the controllability and automation of the slag discharge process.

[0012] How to use this utility model: When connecting the chute, first remove the tee for air supply in the primary tuyere. Then align the slag discharge hole at the bottom of the chute with the slag pit, ensuring that the molten metal can flow into the slag pit from the slag discharge hole at the end of the guide plate. Fix the baffle plate at the bottom outlet of the discharge chute to prevent splashing. At this time, the arc-shaped baffle of the baffle plate is fixed to the top along the safety edge, and the support plate is firmly supported on the ground next to the slag pit. Then adjust the tilt angle of the chute so that the top guide plate is aligned with the outlet of the tuyere, the side plate is close to the furnace wall at the tuyere, and refractory sealant is used to fill and compact the connection to ensure that the guide plate and side plate are connected to the tuyere without gaps. High-alumina refractory mortar is used for the refractory sealant here. Then the slag discharge work can be carried out. If it is necessary to use this tuyere for air supply, remove the refractory sealant at the connection and the chute can be disassembled and removed. Then reinstall the original tee to restore the primary air supply function of the tuyere.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. This utility model enables emergency slag discharge by cooperating with idle vents; the chute consists of a guide trough, a slag baffle plate, and a side connecting plate, and can be quickly installed at the vent. It is connected to the furnace body using refractory sealing material to achieve safe slag discharge; after slag discharge, it can be quickly removed to restore the air supply function of the vent. This solves the problems of insufficient slag discharge ports, poor emergency response capability, high safety risk, and idle vents in traditional systems. It can effectively improve production continuity, safety, and resource utilization. It does not require modification of the furnace body, has a simple structure, is easy to operate, and is economical and practical.

[0014] 2. The U-shaped guide plate of this utility model enhances structural strength, resists deformation, facilitates melt flow, and reduces blockage; the lifting ring facilitates overall hoisting, improving installation and disassembly efficiency and safety; the connecting plate enables quick positioning and fixing, preventing displacement; the hydraulic cylinder adjusts the tilt angle through the movable hinge to ensure smooth slag discharge and docking accuracy, improving operational flexibility and automation, and extending the service life of the chute. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection between this utility model and the eye of the wind.

[0016] Figure 2 This is a schematic diagram showing the connection relationship between the guide groove and the connecting plate of this utility model.

[0017] Figure 3 This is a schematic diagram showing the connection between the guide plate and the hydraulic cylinder of this utility model.

[0018] Figure 4 This is a schematic diagram showing the connection relationship between the original side-blown melting furnace and the tee of this utility model.

[0019] Attached image labels: Guide groove-1, guide plate-11, side plate-12, slag baffle plate-2, support plate-21, lifting ring-22, side connecting plate-3, connecting plate-4, hydraulic cylinder-5, movable hinge-51, base plate-52. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Example 1: Reference Figure 1 A detachable chute for a side-blown smelting furnace includes a guide chute 1, a slag baffle 2, and a side connecting plate 3. The main body of the guide chute 1 is a guide plate 11, and side plates 12 are fixedly connected to both sides of the guide plate 11. The slag baffle 2 is an arc-shaped baffle, and a support plate 21 is provided around the bottom of the arc-shaped baffle. The side connecting plates 3 are connected to both sides near the bottom. The other end of the side connecting plate 3 is fixedly connected to the side plate 12. The side connecting plate 3 and the slag baffle 2 are connected, and a slag discharge hole is formed in the middle.

[0022] When a chute connection is required, refer to Figure 4 First, remove the tee for air supply in the primary tuyere. Then, align the slag discharge hole at the bottom of the chute with the slag pit to ensure that the molten metal can flow into the slag pit from the slag discharge hole at the end of the guide plate 11. Fix the baffle plate 2 at the bottom outlet of the discharge chute to prevent splashing. At this time, the arc-shaped baffle of the baffle plate 2 is fixed to the top along the safety edge. The support plate 21 is firmly supported on the ground next to the slag pit. Then, adjust the tilt angle of the chute so that the guide plate 11 at the top is aligned with the outlet of the tuyere. The side plate 12 is pressed tightly against the furnace wall at the tuyere, and refractory sealing material is used to fill and compact the connection to ensure that the guide plate 11 and the side plate 12 are connected to the tuyere without gaps. High-alumina refractory mortar is used as the refractory sealing material here. Then, the slag discharge work can be carried out. If it is necessary to use the tuyere for air supply, the refractory sealing material at the connection can be removed to disassemble and remove the chute. Then, the original tee can be reinstalled to restore the primary air supply function of the tuyere.

[0023] Example 2: The difference from Example 1 is that the guide plate 11 has a U-shaped cross-section. Designing the guide plate 11 with a U-shaped cross-section can enhance the overall structural strength and rigidity of the chute, improve its resistance to high-temperature deformation, and at the same time, the U-shaped cross-section facilitates the smooth flow of melt, reduces the risk of slag buildup and blockage, improves slag discharge stability, and extends the service life of the chute.

[0024] A lifting ring 22 is also fixedly installed on the top of the outer side of the slag baffle 2. The lifting ring 22 facilitates the overall hoisting and positioning of the chute using lifting equipment, significantly improving installation and dismantling efficiency, reducing manual operation intensity and safety risks, and ensuring that the chute is accurately and stably positioned when connecting to the vent, thus improving operational safety and convenience.

[0025] Example 3: Reference Figure 2 and Figure 3 The difference from Embodiment 2 is that a connecting plate 4 is also fixedly welded to the outer side of the top of the guide groove 1. The connecting plate 4 is used for quick positioning and auxiliary fixing with the furnace body or supporting structure, enhancing the overall stability of the chute after installation, preventing displacement caused by molten impact during slag discharge, and facilitating quick assembly and disassembly with bolts or clamps, thereby improving operational efficiency and safety.

[0026] The bottom of the guide trough 1 is also equipped with a hydraulic cylinder 5. The top of the hydraulic cylinder 5 is fixedly connected to the bottom of the guide plate 11 via a movable hinge 51, and the bottom is equipped with a base plate 52. The hydraulic cylinder 5 is supplied with oil through an external hydraulic system. By adjusting the extension and retraction of the hydraulic cylinder 5, the tilt angle of the chute can be adjusted to adapt to the slag discharge requirements under different working conditions. This ensures smooth flow of the melt and accurate introduction into the slag pit, while also facilitating quick adjustment of the docking accuracy with the air vent, improving operational flexibility and safety, and realizing the controllability and automation of the slag discharge process.

[0027] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A detachable chute for a side-blown smelting furnace, characterized in that: It includes a guide trough (1), a slag baffle (2) and a side connecting plate (3); the main body of the guide trough (1) is a guide plate (11), and side plates (12) are fixedly connected to both sides of the guide plate (11); the slag baffle (2) is an arc-shaped baffle, and a support plate (21) is provided around the bottom of the arc-shaped baffle. The side connecting plates (3) are connected to both sides near the bottom. The other end of the side connecting plate (3) is fixedly connected to the side plate (12). The side connecting plate (3) and the slag baffle (2) are connected, and a slag discharge hole is formed in the middle.

2. A detachable chute for a side-blown smelting furnace as described in claim 1, characterized in that: The guide plate (11) has a U-shaped cross section.

3. A detachable chute for a side-blown smelting furnace as described in claim 1, characterized in that: A hanging ring (22) is also fixedly installed on the top of the outer side of the slag baffle (2).

4. A detachable chute for a side-blown smelting furnace as described in any one of claims 1-3, characterized in that: A connecting plate (4) is also fixedly welded to the outer side of the top of the guide groove (1).

5. A detachable chute for a side-blown smelting furnace as described in claim 1, characterized in that: The bottom of the guide groove (1) is also provided with a hydraulic cylinder (5), the top of the hydraulic cylinder (5) is fixedly connected to the bottom of the guide plate (11) through a movable hinge (51), and the bottom is provided with a base plate (52).

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