Continuous metal smelting device based on multi-section type molten pool

Abstract

The utility model discloses a continuous metal smelting device based on a multi-section type molten pool, and relates to the technical field of metal smelting. The continuous metal smelting device based on the multi-section type molten pool comprises a platform, a furnace body is fixedly installed above the platform, a conveying mechanism used for adding materials is fixedly installed at the front end of the furnace body, a combustor is fixedly installed above the furnace body, a smoke pipe is fixedly installed above the furnace body, and the smoke pipe is fixedly installed above the furnace body. A fixing frame is fixedly installed in the smoke pipe, the temperature measuring instruments are fixed in the protection pipe, the temperature measuring instruments can detect the surface temperature of materials in the furnace so that the power of the combustors can be conveniently controlled, meanwhile, the temperature measuring instruments are located at the tail ends of all slope surface structures of the furnace body, the power of the upper-stage combustor is adjusted according to detection data of the temperature measuring instruments, and the temperature of the materials in the furnace body can be controlled. Partition control over the temperature of the materials is achieved, the materials form three molten pools with different temperatures in the furnace body, and the molten pools are conveniently divided into three functional sections.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, specifically to a continuous metal smelting device based on a multi-stage molten pool. Background Technology

[0002] Multi-stage molten pool smelting is a pyrometallurgical technology. Its core is to divide the molten pool into multiple functional areas (such as oxidation section, reduction section, and slag-forming section), and achieve efficient metal extraction and impurity separation by controlling the temperature, atmosphere, and material mixing in stages.

[0003] The existing Chinese utility model patent with publication number CN212152408U discloses an oxygen-enriched side-blown smelting furnace, comprising: a furnace wall with several tuyeres; a first molten pool lower than the furnace wall, with a slope on its bottom surface; and a second molten pool connected to the first molten pool, with the slope higher than the second molten pool. The second molten pool contains a metal outlet, a slag outlet, and several heating rods, with the slag outlet and heating rods higher than the metal outlet. The heating rods can release heat within the second molten pool. Beneficial effects: The slope promotes the flow of melt from the first molten pool to the second molten pool, which helps prevent low-temperature solidification of the melt in the first molten pool. The heating rods heat the upper layer of molten slag within the second molten pool, preventing low-temperature solidification of the slag and facilitating smooth discharge of the slag from the slag outlet. This utility model relates to smelting furnaces.

[0004] The aforementioned molten pool furnace cannot be adjusted in real time according to the material temperature, and the furnace temperature cannot be precisely controlled. At the same time, the flue gas in the furnace will cause errors between the data detected by the infrared thermometer and the actual situation, making it impossible to effectively divide the different areas of the molten pool. Furthermore, during continuous molten smelting, the operation of adding materials will cause some flue gas to diffuse to the outside, which is very inconvenient. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a continuous metal smelting device based on a multi-stage molten pool, which solves the problems of inaccurate temperature control in different areas of the molten pool and the inconvenience of adding materials.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: A continuous metal smelting device based on a multi-stage molten pool includes a platform, a furnace body is fixedly installed on the platform, a conveying mechanism for adding materials is fixedly installed at the front end of the furnace body, a burner is fixedly installed on the top of the furnace body, a flue is fixedly installed on the top of the furnace body, a fixed frame is fixedly installed inside the flue, an exhaust motor is fixedly installed inside the fixed frame, a fan blade is fixedly installed on the outside of the rotating shaft of the exhaust motor, a protective pipe is fixedly installed on the top of the furnace body, and a temperature measuring instrument is fixedly installed inside the protective pipe;

[0007] The conveying mechanism includes a feeder fixed to the front end of the furnace body, a transmission piston horizontally installed at the front end of the furnace body, and a connecting piston at the top of the front end of the furnace body. A transmission plate is fixedly installed at the movable end of the transmission piston, and a baffle is fixedly installed at the bottom end of the connecting piston.

[0008] Preferably, the platform is internally fixed with I-beams, the front end of the furnace body is provided with a cavity for storing materials, and the rear side of the furnace body cavity is provided with a three-level slope structure, with the rear end slope structure of the furnace body having the largest slope, followed by the front slope structure.

[0009] Preferably, there are ten burners in total, and five burners are arranged in a group, installed symmetrically on the top of the furnace body. There are four flue pipes in total, three of which are installed at equal intervals on the top surface of the rear side of the furnace body, and one is installed above the material storage cavity on the front side of the furnace body. The protective pipes are installed on the top of the furnace body and are located directly above the end of each slope structure of the furnace body.

[0010] Preferably, the top of the furnace body is provided with an opening with the same inner diameter as the protective pipe, and the rear end of the furnace body is equipped with a discharge pipe and a chip removal pipe, with the top horizontal pipe of the chip removal pipe being higher than the discharge pipe.

[0011] Preferably, the rear end of the feeder is fixedly connected to the furnace body and the feeder is in communication with the furnace body. The movable end of the transmission piston is located inside the material storage cavity of the furnace body. The cross-section of the transmission plate is a right trapezoid, and the rear side of the transmission plate is a vertical plane with the slope structure pointing forward.

[0012] Preferably, the transmission plate and the furnace body are slidably connected, the baffle has a triangular cross-section, and its rear side is perpendicular to the bottom surface of the furnace body's storage cavity, and the baffle and the furnace body are slidably connected.

[0013] Beneficial effects

[0014] This invention provides a continuous metal smelting apparatus based on a multi-stage molten pool. Compared with the prior art, it has the following advantages:

[0015] (1) The continuous metal smelting device based on a multi-stage molten pool has a material storage cavity at the front end of the furnace body. The feeder can limit the rate at which the material enters the material storage cavity at the front end of the furnace body while conveying the material to keep it consistent and prevent material blockage. After the material enters the material storage cavity of the furnace body, it will accumulate, so that the feed port is below the top surface of the material to reduce the amount of flue gas entering the cavity. The transmission piston drives the transmission plate to move back and forth to convey the material into the heating chamber of the furnace body. When the transmission plate moves backward, it will drive the material into the rear chamber of the furnace body. When the transmission plate moves forward, the inclined structure on the front side will scoop up the material. The material entry amount can be controlled by adjusting the height of the baffle by connecting the piston. The exhaust motor inside the flue pipe above the material storage cavity of the furnace body can drive the fan blade to rotate and discharge the flue gas inside the material storage cavity below, thereby preventing the spread of flue gas while quantitatively adding material.

[0016] (2) The continuous metal smelting device based on multi-stage molten pools uses a thermometer fixed inside the protective tube to detect the surface temperature of the material inside the furnace, so as to control the power of the burner. Since the thermometer is located at the end of each slope structure of the furnace body and in front of the corresponding area of ​​the flue, the exhaust motor inside the flue will drive the fan blades to rotate and discharge the flue gas, preventing the flue gas from affecting the detection accuracy of the thermometer. The power of the upper burner is adjusted according to the detection data of the thermometer to achieve zoned control of the material temperature, so that the material forms three molten pools with different temperatures inside the furnace body, so as to divide the molten pool into three functional sections. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the baffle installation structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the fan blade installation structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the temperature measuring instrument of this utility model;

[0021] In the diagram: 1. Platform; 11. Furnace body; 12. Burner; 13. Smoke pipe; 14. Fixing frame; 15. Exhaust motor; 16. Fan blade; 17. Protective pipe; 18. Temperature measuring instrument; 19. Discharge pipe; 110. Chip removal pipe; 2. Conveying mechanism; 21. Feeder; 22. Transmission piston; 23. Transmission plate; 24. Connecting piston; 25. Baffle. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a continuous metal smelting device based on a multi-stage molten pool, including a platform 1, a furnace body 11 fixedly installed above the platform 1, a burner 12 fixedly installed above the furnace body 11, a flue pipe 13 fixedly installed above the furnace body 11, a fixing frame 14 fixedly installed inside the flue pipe 13, an exhaust motor 15 fixedly installed inside the fixing frame 14, a fan blade 16 fixedly installed on the outer side of the shaft of the exhaust motor 15, a protective pipe 17 fixedly installed above the furnace body 11, a thermometer 18 fixedly installed inside the protective pipe 17, an I-beam fixed inside the platform 1, a cavity for storing materials at the front end of the furnace body 11, and a cavity at the rear of the inner cavity of the furnace body 11. The furnace body 11 has a three-level slope structure, with the rear slope structure having the steepest gradient, followed by the front slope structure. There are ten burners 12, arranged in groups of five, and they are installed symmetrically on the top of the furnace body 11. There are four flue pipes 13, three of which are installed at equal intervals on the rear top surface of the furnace body 11, and one is installed above the material storage cavity on the front side of the furnace body 11. Protective pipes 17 are installed on the top of the furnace body 11, and are located directly above the end of each level of the slope structure of the furnace body 11. The top of the furnace body 11 has an opening with the same inner diameter as the protective pipe 17. The rear end of the furnace body 11 is equipped with a discharge pipe 19 and a chip removal pipe 110, with the top horizontal pipe of the chip removal pipe 110 being higher than that of the discharge pipe 19.

[0024] Specifically, the platform 1 provides support for the furnace body 11 and offers some insulation. The sloping structure inside the furnace body 11 restricts the flow rate of the material. When the material enters the furnace body 11, it flows slowly because it is not fully heated to a liquid state. The sloping structure prevents material blockage at the connection between the heating chamber and the storage chamber at the rear of the furnace body 11. The material will be fully heated to a liquid state above the central sloping structure of the furnace body 11. The small-angle sloping structure increases the material flow time, facilitating thorough heating. The storage cavity at the front of the furnace body 11 can store a certain amount of material, with the inlet located below the top surface of the material to reduce the amount of flue gas entering the cavity. The flue pipe 13 is connected to the furnace body 11. When the exhaust motor 15 drives the fan blades 16 to rotate, the fan blades 16 will... An upward airflow is generated, which guides the flue gas into the interior of the flue pipe 13 and discharges it through the flue pipe 13. The protective pipe 17 can protect the temperature measuring instrument 18. The temperature measuring instrument 18 detects the surface temperature of the material inside the furnace, so as to control the power of the burner 12. Since the temperature measuring instrument 18 is located at the end of each slope structure of the furnace body 11, the power of the upper burner 12 can be adjusted according to the detection data of the temperature measuring instrument 18, so as to realize the zoned control of the material temperature, so that the material forms three molten pools with different temperatures inside the furnace body 11, so as to divide the molten pools into three functional sections. The burner 12 located at the rear of the furnace body 11 can prevent the slag temperature from dropping and agglomerating. The discharge pipe 19 can facilitate the discharge of molten iron located below the slag layer, and the chip removal pipe 110 can facilitate the discharge of molten slag.

[0025] A conveying mechanism 2 for adding materials is fixedly installed at the front end of the furnace body 11. The conveying mechanism 2 includes a feeder 21 fixed at the front end of the furnace body 11, a transmission piston 22 horizontally installed at the front end of the furnace body 11, and a connecting piston 24 at the top of the front end of the furnace body 11. A transmission plate 23 is fixedly installed at the movable end of the transmission piston 22, and a baffle 25 is fixedly installed at the bottom end of the connecting piston 24. The rear end of the feeder 21 is fixedly connected to the furnace body 11 and communicates with the furnace body 11. The movable end of the transmission piston 22 is located inside the material storage cavity of the furnace body 11. The cross section of the transmission plate 23 is a right trapezoid, and the rear side of the transmission plate 23 is a vertical plane with the cross-section pointing forward. The transmission plate 23 and the furnace body 11 are slidably connected. The cross section of the baffle 25 is a triangular structure, and the rear vertical surface is perpendicular to the bottom surface of the material storage cavity of the furnace body 11. The baffle 25 and the furnace body 11 are slidably connected.

[0026] Specifically, the feeder 21 can limit the rate at which the material enters the front storage cavity of the furnace body 11 while conveying the material to maintain a consistent flow rate and prevent material blockage. After entering the storage cavity of the furnace body 11, the material will accumulate. The transmission piston 22 drives the transmission plate 23 to reciprocate back and forth to convey the material into the heating chamber of the furnace body 11. As the transmission plate 23 moves backward, it will carry the material into the rear chamber of the furnace body 11. When the transmission plate 23 moves forward, the inclined structure on the front side will scoop up the material. The material entry amount can be controlled by adjusting the height of the baffle 25 by connecting the piston 24. At the same time, all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] During operation, the front end of the furnace body 11 is equipped with a material storage cavity. The feeder 21 can simultaneously convey materials and limit the rate at which materials enter the front storage cavity of the furnace body 11 to maintain consistency and prevent material blockage. After entering the storage cavity of the furnace body 11, the materials will accumulate, so that the feed inlet is below the top surface of the materials to reduce the amount of flue gas entering the cavity. The transmission piston 22 drives the transmission plate 23 to reciprocate back and forth to convey materials into the heating chamber of the furnace body 11. As the transmission plate 23 moves backward, it will carry materials into the rear chamber of the furnace body 11. When the transmission plate 23 moves forward, the inclined structure on the front side will scoop up the materials. The material inflow is controlled by adjusting the height of the baffle 25 by the connecting piston 24. The flue gas is discharged inside the flue pipe 13 located above the storage cavity of the furnace body 11. The motor 15 drives the fan blades 16 to rotate and discharge the flue gas inside the lower storage cavity, thereby preventing the spread of flue gas while quantitatively adding materials. The thermometer 18 is fixed inside the protective tube 17 and detects the surface temperature of the material inside the furnace to control the power of the burner 12. Since the thermometer 18 is located at the end of each slope structure of the furnace body 11 and in front of the corresponding area of ​​the flue pipe 13, the exhaust motor 15 inside the flue pipe 13 drives the fan blades 16 to rotate and discharge the flue gas, preventing the flue gas from affecting the detection accuracy of the thermometer 18. The power of the upper burner 12 is adjusted according to the detection data of the thermometer 18 to achieve zoned control of the material temperature, so that the material forms three molten pools with different temperatures inside the furnace body 11, so as to divide the molten pools into three functional sections.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous metal smelting apparatus based on a multi-stage molten pool, comprising a platform (1), characterized in that: A furnace body (11) is fixedly installed above the platform (1). A conveying mechanism (2) for adding materials is fixedly installed at the front end of the furnace body (11). A burner (12) is fixedly installed above the furnace body (11). A flue (13) is fixedly installed above the furnace body (11). A mounting bracket (14) is fixedly installed inside the flue (13). An exhaust motor (15) is fixedly installed inside the mounting bracket (14). A fan blade (16) is fixedly installed on the outside of the shaft of the exhaust motor (15). A protective pipe (17) is fixedly installed above the furnace body (11). A thermometer (18) is fixedly installed inside the protective pipe (17). The conveying mechanism (2) includes a feeder (21) fixed to the front end of the furnace body (11). The conveying mechanism (2) also includes a transmission piston (22) horizontally installed at the front end of the furnace body (11) and a connecting piston (24) at the top of the front end of the furnace body (11). A transmission plate (23) is fixedly installed at the movable end of the transmission piston (22), and a baffle (25) is fixedly installed at the bottom end of the connecting piston (24).

2. The continuous metal smelting apparatus based on a multi-stage molten pool according to claim 1, characterized in that: The platform (1) is fixed with I-beams inside. The front end of the furnace body (11) is provided with a cavity for storing materials. The rear side of the inner cavity of the furnace body (11) is provided with a three-level slope structure. The slope of the rear slope structure of the furnace body (11) is the largest, followed by the front slope structure.

3. A continuous metal smelting apparatus based on a multi-stage molten pool according to claim 1, characterized in that: There are ten burners (12) in total, and five burners (12) are grouped together and installed symmetrically on the top of the furnace body (11) in a mirror image. There are four flue pipes (13), three of which are installed at equal intervals on the top surface of the rear side of the furnace body (11) and one is installed above the material storage cavity on the front side of the furnace body (11). The protective pipes (17) are installed on the top of the furnace body (11) and are located directly above the end of each slope structure of the furnace body (11).

4. A continuous metal smelting apparatus based on a multi-stage molten pool according to claim 1, characterized in that: The top of the furnace body (11) is provided with an opening that is the same as the inner diameter of the protective pipe (17). The rear end of the furnace body (11) is equipped with a discharge pipe (19) and a chip removal pipe (110). The top horizontal pipe of the chip removal pipe (110) is higher than the discharge pipe (19).

5. A continuous metal smelting apparatus based on a multi-stage molten pool according to claim 1, characterized in that: The rear end of the feeder (21) is fixedly connected to the furnace body (11), and the feeder (21) is connected to the furnace body (11). The movable end of the transmission piston (22) is located inside the storage cavity of the furnace body (11). The cross section of the transmission plate (23) is a right trapezoid, and the rear side of the transmission plate (23) is a vertical plane with a slope structure pointing to the front.

6. A continuous metal smelting apparatus based on a multi-stage molten pool according to claim 1, characterized in that: The transmission plate (23) and the furnace body (11) are connected in a sliding manner. The baffle (25) has a triangular cross-section and its rear side is perpendicular to the bottom surface of the storage cavity of the furnace body (11). The baffle (25) and the furnace body (11) are connected in a sliding manner.

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