Converter slag tank

Abstract

The utility model discloses a converter slag tank, and belongs to the technical field of metallurgical equipment. The slag pot comprises a pot body composed of an inner layer, a middle layer and an outer layer, the inner layer is made of high-alumina refractory materials, the middle layer is a heat insulation and heat dissipation layer composed of porous ceramic materials and heat dissipation copper pipes, and the outer layer is made of high-strength heat-resisting alloy steel. The bottom of the tank body is of an inverted-cone-shaped structure and is provided with a slag discharging opening and a rotatable sealing valve, and reinforcing ribs are distributed on the outer side wall. Through the three-layer structural design, the high temperature resistance, the wear resistance and the heat dissipation performance of the slag ladle are improved, slag residues are reduced through the bottom structure, the structural strength is enhanced through the reinforcing ribs, the service life of the slag ladle is prolonged, the production efficiency and the safety are improved, and the slag ladle has high practical value and innovativeness.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically a converter slag pot. This slag pot is mainly used for the storage, transportation, and processing of high-temperature slag during converter steelmaking. Its structural design is suitable for harsh working conditions such as high temperature and strong corrosion in the metallurgical industry, effectively improving the efficiency and safety of converter slag processing. Background Technology

[0002] In existing metallurgical production processes, converter slag pots, as key equipment for holding high-temperature slag produced in converter steelmaking, face several pressing issues. Traditional converter slag pots typically employ a single-material structure. Under prolonged exposure to the corrosive effects of slag at temperatures exceeding 1500℃, and during frequent loading, unloading, and transportation, the bottom and sidewalls of the pots are prone to wear and cracking. This results in a short service life for the slag pots, necessitating frequent replacements, which not only increases production costs but also impacts production efficiency.

[0003] Meanwhile, traditional slag pots have poor heat dissipation performance. When high-temperature slag is stored inside the pot for a long time, the heat is difficult to dissipate effectively, which can easily cause the pot temperature to become too high, further accelerating the aging and damage of the pot material. Moreover, excessively high temperatures may also pose safety hazards to transportation equipment and the surrounding environment. In addition, due to unreasonable structural design, slag is prone to remain inside traditional slag pots during slag discharge, which not only wastes resources but also requires additional manpower and time for cleaning, increasing the complexity of production. Utility Model Content

[0004] To address the problems of short service life, poor heat dissipation, and slag residue in traditional converter slag pots, this invention provides a converter slag pot that improves high-temperature resistance and wear resistance, enhances heat dissipation, and reduces slag residue by optimizing structural design and material selection. This extends the service life of the slag pot, reduces production costs, and improves production efficiency and safety.

[0005] A converter slag pot includes a main body, which is composed of three layers: an inner layer, a middle layer, and an outer layer. The inner layer is made of high-alumina refractory material, possessing excellent high-temperature resistance and slag erosion resistance, allowing direct contact with high-temperature slag and effectively protecting the other structural layers of the pot.

[0006] Furthermore, the middle layer is a heat insulation and heat dissipation layer, composed of porous ceramic material and copper heat dissipation pipes arranged alternately. The porous ceramic material has excellent heat insulation properties, which can reduce the transfer of heat to the outside. At the same time, its porous structure facilitates air flow and assists in heat dissipation. The copper heat dissipation pipes are equipped with circulating cooling medium channels, which, through connection with the external cooling system, can promptly remove heat from the inside of the tank, further improving heat dissipation efficiency.

[0007] Furthermore, the outer layer is a metal support layer made of high-strength heat-resistant alloy steel, which provides structural support and strength guarantee for the entire tank, ensuring the stability of the tank during transportation and use.

[0008] Furthermore, the bottom of the tank body is designed with an inverted conical structure, with a slag discharge port at the center of the bottom, and a rotatable sealing valve installed at the slag discharge port. The inverted conical bottom structure facilitates the smooth discharge of slag under gravity, reducing residue; the sealing valve effectively prevents slag leakage during transportation, ensuring transportation safety.

[0009] Furthermore, multiple reinforcing ribs are evenly distributed on the outer side wall of the tank body. The reinforcing ribs are integrally formed with the outer metal support layer, which can enhance the tank's resistance to deformation and further improve the structural strength of the tank.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The converter slag pot of this utility model adopts a three-layer structure design. The inner layer of high-alumina refractory material effectively resists the erosion of high-temperature slag, the middle layer of heat insulation and heat dissipation structure reduces heat loss and can timely discharge excess heat, and the outer layer of high-strength heat-resistant alloy steel provides reliable structural support, which extends the service life of the slag pot by at least 30% compared with traditional slag pots.

[0012] The inverted conical structure at the bottom and the slag discharge port design ensure smoother slag discharge, reducing residual slag by more than 80%, significantly reducing cleaning workload and improving production efficiency. The reinforcing ribs on the outer wall enhance the tank's resistance to deformation, enabling it to better adapt to various operating conditions during high temperatures and transportation, thus improving the equipment's safety and stability. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention;

[0017] In the picture:

[0018] Tank body 1, inner layer 11, middle layer 12, outer layer 13, slag discharge port 2, sealing valve 3, reinforcing rib 4. Detailed Implementation

[0019] 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.

[0020] Example 1

[0021] like Figure 1-3 As shown;

[0022] A converter slag pot.

[0023] This implementation plan addresses the technical problems existing in the prior art, such as those disclosed in the background section above: "In existing metallurgical production processes, converter slag pots, as key equipment for holding high-temperature slag produced in converter steelmaking, face several pressing issues. Traditional converter slag pots typically employ a single-material structure. Under long-term exposure to the erosion of slag at temperatures exceeding 1500℃ and during frequent loading, unloading, and transportation, the bottom and sidewalls of the pot are prone to wear and cracking, resulting in a short service life and frequent replacements. This not only increases production costs but also affects production efficiency."

[0024] Meanwhile, traditional slag pots have poor heat dissipation performance. When high-temperature slag is stored inside the pot for a long time, the heat is difficult to dissipate effectively, easily causing the pot temperature to become too high. This further accelerates the aging and damage of the pot material, and the excessively high temperature may also pose safety hazards to transportation equipment and the surrounding environment. In addition, due to unreasonable structural design, slag is easily left inside the pot during slag discharge, which not only wastes resources but also requires additional manpower and time for cleaning, increasing the complexity of production. In practical terms, this problem is obviously a real and difficult problem to solve. Therefore, to solve this technical problem, a converter slag pot is provided.

[0025] like Figure 1-3 As shown in the figure;

[0026] Based on the above, a converter slag pot includes a pot body 1, characterized in that: the pot body 1 is composed of a three-layer structure: an inner layer 11, a middle layer 12, and an outer layer 13; the inner layer 11 is a high-alumina refractory material layer; the middle layer 12 is a heat insulation and heat dissipation layer, which is composed of porous ceramic material and heat dissipation copper pipes arranged alternately; the outer layer 13 is a high-strength heat-resistant alloy steel layer; the bottom of the pot body 1 has an inverted conical structure, and a slag discharge port 2 is provided at the center of the bottom, and a rotatable sealing valve 3 is installed at the slag discharge port 2; multiple reinforcing ribs 4 are evenly distributed on the outer side wall of the pot body 1.

[0027] The heat dissipation copper pipe has a circulating cooling medium channel inside, and both ends of the heat dissipation copper pipe are connected to the external cooling system.

[0028] The reinforcing rib 4 is integrally formed with the outer metal support layer 13.

[0029] The sealing valve 3 is made of high-temperature resistant sealing material.

[0030] The alumina content of high-alumina refractory materials shall not be less than 90%.

[0031] Tank structure preparation:

[0032] First, the inner layer is prepared by selecting high-alumina refractory material with a purity of not less than 90% and molding it into an inner layer blank that matches the shape of the main body of the tank. Then, it is fired at a high temperature of 1500℃ for 24 hours to give it sufficient high temperature resistance and corrosion resistance.

[0033] Next, an intermediate layer is prepared by cutting porous ceramic materials into specified shapes and sizes and arranging them at certain intervals. Heat dissipation copper pipes are interspersed between the porous ceramic materials, and the two ends of the heat dissipation copper pipes are connected to the liquid inlet and liquid outlet of the external cooling system, respectively, to form a circulating cooling channel.

[0034] Then, the outer layer is prepared by selecting high-strength heat-resistant alloy steel, such as steel containing alloying elements such as nickel and chromium, and the outer structure of the tank body is made by forging process. Reinforcing ribs are processed on the outer wall according to the design requirements, and the reinforcing ribs are integrally formed with the outer layer.

[0035] Assembly process:

[0036] The prepared inner layer is placed inside the outer layer, maintaining a certain gap between them to accommodate the porous ceramic material and heat dissipation copper pipes of the intermediate layer. The porous ceramic material and heat dissipation copper pipes of the intermediate layer are then fixed between the inner and outer layers according to the design, ensuring a secure connection and preventing leaks.

[0037] Installation of slag discharge port and sealing valve:

[0038] A slag discharge port is located at the center of the inverted conical structure at the bottom of the tank body. The diameter of the slag discharge port is determined according to actual production needs. A rotatable sealing valve is installed at the slag discharge port. The rotation of the sealing valve is achieved through bearings and a drive device to control the opening and closing of the slag discharge port. The sealing valve is made of high-temperature resistant sealing material to ensure sealing performance in high-temperature environments.

[0039] Cooling system connection:

[0040] The inlet and outlet of the heat dissipation copper pipe are connected to the coolant circulation pump and cooling water tank of the external cooling system, respectively, to form a complete cooling circulation system. During use, the coolant enters the heat dissipation copper pipe through the circulation pump, absorbs heat from inside the tank, flows back to the cooling water tank for cooling, and then is circulated again for reuse.

[0041] How to use:

[0042] When it is necessary to hold converter slag, the slag pot is moved below the converter slag outlet, the sealing valve is opened, and the high-temperature slag enters the pot through the slag discharge port, with the inner high-alumina refractory material in direct contact with the slag. During transportation, the sealing valve is closed, and the middle layer of heat insulation and heat dissipation structure begins to work. The porous ceramic material reduces heat transfer to the outside, and the coolant in the heat dissipation copper pipes circulates to remove heat, ensuring that the external temperature of the pot does not become too high.

[0043] When slag discharge is required, move the slag pot to the slag discharge position, open the sealing valve, and because the bottom of the pot has an inverted conical structure, the slag will be discharged smoothly from the slag discharge port under the action of gravity. After the slag discharge is completed, close the sealing valve.

[0044] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A converter slag pot, comprising a pot body (1), characterized in that: The tank body (1) is composed of three layers: an inner layer (11), a middle layer (12), and an outer layer (13). The inner layer (11) is a high-alumina refractory material layer. The middle layer (12) is a heat insulation and heat dissipation layer, which is composed of porous ceramic material and heat dissipation copper pipes arranged alternately. The outer layer (13) is a high-strength heat-resistant alloy steel layer. The bottom of the tank body (1) is an inverted cone structure, and a slag discharge port (2) is provided at the center of the bottom. A rotatable sealing valve (3) is installed at the slag discharge port (2). Multiple reinforcing ribs (4) are evenly distributed on the outer side wall of the tank body (1).

2. A converter slag pot according to claim 1, characterized in that, The heat dissipation copper pipe has a circulating cooling medium channel inside, and both ends of the heat dissipation copper pipe are connected to an external cooling system.

3. A converter slag pot according to claim 1, characterized in that: The reinforcing rib (4) is integrally formed with the outer metal support layer (13).

4. A converter slag pot according to claim 1, characterized in that: The sealing valve (3) is made of high-temperature resistant sealing material.

5. A converter slag pot according to claim 1, characterized in that: The alumina content of the high-alumina refractory material is not less than 90%.

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