Automatic slag discharging device for metallurgical slag

Abstract

The utility model relates to an automatic slag discharging device for metallurgical slag, and aims to solve the problems that the slag cooling efficiency is low and the slag discharging process is not environment-friendly. The device comprises an L-shaped cooling pipe with a bent bottom, wherein the upper section of the L-shaped cooling pipe is communicated with a slag discharge port of the metallurgical furnace; the circulating cooling part is arranged on the cooling pipe and is used for cooling slag; the dispersing part comprises a rotating power mechanism, a rotating shaft and a dispersing plate, dispersing holes are densely distributed in the dispersing plate, the dispersing plate is located below the slag discharging opening, the rotating shaft is driven by the rotating power mechanism to rotate, slag is discharged from the dispersing holes under the action of gravity and centrifugal force and dispersed into particles, and rapid cooling and subsequent recycling treatment are facilitated; the blades are arranged on the rotating shaft and located above the slag discharging opening, and the blades rotate synchronously when the rotating shaft rotates; one end of the waste gas discharge pipe is communicated with the top of the cooling pipe, and the other end is connected with a waste gas treatment system for discharging and treating waste gas generated by slag cooling. According to the utility model, the slag cooling efficiency is improved, and the slag discharging process is more environment-friendly.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical technology, and in particular to an automatic slag discharge device for metallurgical furnaces. Background Technology

[0002] In the metallurgical industry, the treatment of metallurgical slag is a crucial step. Traditional methods of discharging metallurgical slag often have several drawbacks. Firstly, the slag discharged from metallurgical furnaces is typically in lumps. These lumps are relatively large, and during cooling, the internal heat is difficult to dissipate quickly, resulting in slow cooling rates. This not only prolongs the entire production cycle but also increases energy consumption. Furthermore, lumpy slag presents numerous challenges in subsequent recycling processes, such as difficulties in efficient screening and magnetic separation, reducing the slag's recycling rate.

[0003] On the other hand, metallurgical slag generates a large amount of waste gas during the cooling process. This waste gas contains various harmful substances, such as dust and toxic gases. Traditional slag discharge devices lack effective waste gas treatment measures, and the waste gas is directly emitted into the atmosphere, causing serious environmental pollution, endangering the health of workers, and failing to meet current environmental protection requirements. Therefore, developing an automatic slag discharge device for metallurgical slag that can efficiently discharge slag, rapidly cool slag, and effectively treat waste gas is of significant practical importance. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic slag discharge device for metallurgical slag, which solves the technical problems of traditional slag discharge devices, where slag is usually in block form, making cooling inconvenient, and block slag also presents many inconveniences in the subsequent recycling process.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide an automatic slag discharge device for metallurgical slag, the automatic slag discharge device for metallurgical slag comprising:

[0006] The cooling pipe has an L-shaped structure with a bent bottom, and the upper section of the cooling pipe is connected to the slag discharge port of the metallurgical furnace.

[0007] A circulating cooling section is provided on the cooling pipe;

[0008] The dispersion section includes a rotating power mechanism, a rotating shaft, and a dispersion plate. The rotating power mechanism is mounted on the cooling pipe. The rotating shaft is rotatably mounted inside the cooling pipe and is connected to the power output shaft of the rotating power mechanism. The dispersion plate is mounted on the rotating shaft and is located below the slag discharge port. The dispersion plate is densely covered with a plurality of dispersion holes.

[0009] The blade is disposed on the rotating shaft and located above the slag discharge port;

[0010] An exhaust gas discharge pipe is provided, one end of which is connected to the top of the cooling pipe, and the other end of which is connected to the exhaust gas treatment system.

[0011] In one embodiment, the circulating cooling unit includes:

[0012] A cooling water inlet pipe is connected to the cooling pipe, and the cooling water inlet pipe is located below the dispersion section;

[0013] A cooling water outlet pipe, wherein the cooling water outlet pipe is connected to the bottom bend of the cooling pipe;

[0014] A cooling water tank, wherein the cooling water output pipe is connected to the cooling water tank;

[0015] A circulating pump is installed in the cooling water pool, and the output end of the circulating pump is connected to the cooling water input pipe.

[0016] In one embodiment, a filter plate is further included, which is disposed at a curved portion within the cooling pipe and covers the inlet of the cooling water outlet pipe.

[0017] In one embodiment, a slag collection vehicle is provided at the bottom outlet of the cooling pipe.

[0018] In one embodiment, the upper surface of the dispersion plate is a curved surface with a central depression.

[0019] The above-described technical solutions in the embodiments of this utility model have at least the following technical effects or advantages:

[0020] The automatic slag discharge device for metallurgical slag provided in this embodiment of the invention, by setting up a dispersion section, when the slag in the metallurgical furnace enters the cooling pipe and falls onto the dispersion plate, the rotating power mechanism drives the rotating shaft to rotate, causing the dispersion plate to rotate synchronously. Under the combined action of gravity and centrifugal force, the slag is discharged from the dispersion holes on the dispersion plate, and the originally lumpy slag is dispersed into a granular structure. This granular slag has a larger specific surface area, which can make more sufficient contact with the external cooling medium, thereby greatly improving the cooling speed, shortening the production cycle, and reducing energy consumption. The dispersed granular slag is more convenient in subsequent recycling processes. For example, in operations such as screening and magnetic separation, the granular slag can pass through the screen more evenly, improving screening efficiency; at the same time, the magnetic separation equipment can more easily adsorb magnetic substances in the granular slag, improving the slag recycling rate and reducing production costs. In addition, this device is equipped with blades and an exhaust gas discharge pipe. When the rotating shaft rotates, the blades rotate synchronously, drawing the exhaust gas generated by slag cooling upward to the exhaust gas discharge pipe, and finally treating it through the exhaust gas treatment system. This design effectively collects and treats the waste gas generated during the slag discharge process, preventing the waste gas from being directly emitted into the atmosphere, reducing environmental pollution, meeting the requirements of environmentally friendly production, and protecting the health of the staff. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of the automatic slag discharge device for metallurgical furnaces provided in this embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the internal structure of the automatic slag discharge device for metallurgical furnaces provided in this embodiment of the present invention.

[0024] The labels for the various figures are as follows:

[0025] 1. Cooling pipe; 2. Circulating cooling section; 3. Dispersion section; 4. Blades; 5. Exhaust gas discharge pipe; 6. Filter plate; 7. Metallurgical furnace; 21. Cooling water inlet pipe; 22. Cooling water outlet pipe; 31. Rotating power mechanism; 32. Rotating shaft; 33. Dispersion plate; 71. Slag discharge port. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Please see Figures 1 to 2This application provides an automatic slag discharge device for a metallurgical furnace 7, comprising a cooling pipe 1, a circulating cooling section 2, a dispersion section 3, blades 4, and a waste gas discharge pipe 5. The cooling pipe 1 has an L-shaped structure with a bent bottom, and its upper section is connected to the slag discharge port 71 of the metallurgical furnace 7. The circulating cooling section 2 is mounted on the cooling pipe 1. The dispersion section 3 includes a rotating power mechanism 31, a rotating shaft 32, and a dispersion plate 33. The rotating power mechanism 31 is mounted on the cooling pipe 1, the rotating shaft 32 is rotatably mounted inside the cooling pipe 1, and the rotating shaft 32 is connected to the power output shaft of the rotating power mechanism 31. The dispersion plate 33 is mounted on the rotating shaft 32 and located below the slag discharge port 71, and the dispersion plate 33 has a plurality of dispersion holes. The blades 4 are mounted on the rotating shaft 32 and located above the slag discharge port 71. One end of the waste gas discharge pipe 5 is connected to the top of the cooling pipe 1, and the other end of the waste gas discharge pipe 5 is connected to a waste gas treatment system.

[0031] During slag discharge, the valve on the slag discharge port 71 of the metallurgical furnace 7 is opened. The slag inside the metallurgical furnace 7 enters the cooling pipe 1 and falls onto the dispersion plate 33. The rotating shaft 32 is driven to rotate by the rotating power mechanism 31, which in turn causes the dispersion plate 33 to rotate. This causes the slag falling onto the dispersion plate 33 to be discharged from the dispersion holes under the action of gravity and centrifugal force, thus dispersing the slag into a granular structure. After falling, the granular slag is cooled by the circulating cooling section 2 and then discharged from the bottom of the cooling pipe 1. Through the dispersion effect of the dispersion section 3, the originally lumpy slag is transformed into a granular structure, facilitating rapid cooling of the slag. Furthermore, the granular slag facilitates subsequent slag recycling. In addition, by setting blades 4 and exhaust pipe 5, when slag is discharged, the blades 4 on the rotating shaft 32 rotate synchronously, and the exhaust gas generated by the slag cooling is drawn upward to the exhaust pipe 5 for discharge (the exhaust gas can flow upward through the dispersion holes on the dispersion plate 33 and the gap between the dispersion plate 33 and the cooling pipe 1 wall), and finally treated by the exhaust gas treatment system, making the slag discharge process more environmentally friendly.

[0032] The exhaust gas treatment system is existing technology, and its specific structure and treatment principle will not be described in detail here. The cooling pipe 1, the rotating shaft 32, and the dispersion plate 33 are all made of high-temperature resistant metal materials.

[0033] In one embodiment, the circulating cooling unit 2 includes a cooling water inlet pipe 21, a cooling water outlet pipe 22, a cooling water tank, and a circulating pump. The cooling water inlet pipe 21 is connected to the cooling pipe 1 and is located below the distribution section 3. The cooling water outlet pipe 22 is connected to the bottom bend of the cooling pipe 1. The cooling water outlet pipe 22 is connected to the cooling water tank. The circulating pump is located within the cooling water tank, and its output end is connected to the cooling water inlet pipe 21.

[0034] During operation, the circulating pump pumps the cooling water in the cooling water pool to the cooling pipe 1 through the cooling water inlet pipe 21, thereby cooling the slag in the cooling pipe 1. The cooled water then flows back to the cooling water pool through the cooling water outlet pipe 22 at the bottom of the cooling pipe 1, thus achieving circulating cooling.

[0035] Optionally, a waste heat recovery device can be installed between the cooling water output pipe 22 and the cooling water pool. The waste heat recovery device can recover and reuse the heat in the cooling water, which saves energy and protects the environment, while also cooling the cooling water.

[0036] In one embodiment, a filter plate 6 is further included. The filter plate 6 is disposed at the curved portion within the cooling pipe 1, and covers the inlet of the cooling water output pipe 22. The filter plate 6 has a plurality of filter holes. Figure 2 The inclined design allows the slag to roll downwards and be discharged along the inclined surface of the filter plate 6. The cooling water passes through the filter plate 6 and enters the cooling water output pipe 22 below the filter plate 6 for recirculation.

[0037] In one embodiment, a slag collection vehicle is installed at the bottom outlet of the cooling pipe 1. The slag collection vehicle facilitates the collection and transportation of slag.

[0038] In one embodiment, the upper surface of the dispersing plate 33 is a concave curved surface. By setting the upper surface of the dispersing plate 33 to a concave curved surface, when the dispersing plate 33 rotates to disperse the slag on it, the slag is not easily thrown by centrifugal force onto the inner wall of the surrounding cooling pipe 1, so that the slag can flow out along the dispersing holes.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic slag discharge device for metallurgical furnaces, characterized in that, The automatic slag discharge device for metallurgical slag includes: The cooling pipe has an L-shaped structure with a bent bottom, and the upper section of the cooling pipe is connected to the slag discharge port of the metallurgical furnace. A circulating cooling section is provided on the cooling pipe; The dispersion section includes a rotating power mechanism, a rotating shaft, and a dispersion plate. The rotating power mechanism is mounted on the cooling pipe. The rotating shaft is rotatably mounted inside the cooling pipe and is connected to the power output shaft of the rotating power mechanism. The dispersion plate is mounted on the rotating shaft and is located below the slag discharge port. The dispersion plate is densely covered with a plurality of dispersion holes. The blade is disposed on the rotating shaft and located above the slag discharge port; An exhaust gas discharge pipe is provided, one end of which is connected to the top of the cooling pipe, and the other end of which is connected to the exhaust gas treatment system.

2. The automatic slag discharge device for metallurgical furnaces according to claim 1, characterized in that, The circulating cooling unit includes: A cooling water inlet pipe is connected to the cooling pipe, and the cooling water inlet pipe is located below the dispersion section; A cooling water outlet pipe, wherein the cooling water outlet pipe is connected to the bottom bend of the cooling pipe; A cooling water tank, wherein the cooling water output pipe is connected to the cooling water tank; A circulating pump is installed in the cooling water pool, and the output end of the circulating pump is connected to the cooling water input pipe.

3. The automatic slag discharge device for metallurgical furnaces according to claim 2, characterized in that: It also includes a filter plate, which is disposed in the curved part inside the cooling pipe and covers the inlet of the cooling water output pipe.

4. The automatic slag discharge device for metallurgical furnaces according to claim 1, characterized in that: A slag collection vehicle is installed at the bottom outlet of the cooling pipe.

5. The automatic slag discharge device for metallurgical furnaces according to claim 1, characterized in that: The upper surface of the dispersion plate is a curved surface with a downward concave center.

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