An oxygen-enriched side-blown smelting apparatus

Abstract

This utility model discloses an oxygen-enriched side-blown smelting device, specifically relating to the field of smelting furnace technology. It includes a furnace mechanism with three evenly arranged feeding hoppers at its top. Inside the furnace mechanism is a mixing and distributing mechanism, and on one side of this mechanism is a baffle mechanism. The mixing and distributing mechanism includes a mixing box and a mixing paddle rotatably connected inside the mixing box. A discharge chute is located below the mixing box, and a distributing vibrating plate is located below the discharge chute. One side of the distributing vibrating plate is rotatably connected to the mixing box. This utility model, through the synergistic effect of the two-stage dispersion mechanism of the mixing and distributing mechanism and the baffle mechanism, ensures a uniform distribution of materials within the furnace, significantly improving localized over-reaction or reaction lag, preventing charge agglomeration, and enhancing smelting efficiency and metal recovery rate. Simultaneously, the material homogenization process reduces energy consumption fluctuations caused by uneven reaction, enhancing product quality stability.

Description

Technical Field

[0001] This utility model relates to the field of smelting furnace technology, and in particular to an oxygen-enriched side-blown smelting device. Background Technology

[0002] As a key smelting device in the metallurgical field, the oxygen-enriched side-blown smelting equipment's core technological feature lies in the high-speed injection of industrial pure oxygen into the furnace through side-arranged lances, significantly enhancing the efficiency and intensity of the smelting reaction. A typical configuration includes two independent feed inlets: one for adding preheated high-heat lead slag, and the other for adding anthracite and limestone as reducing agents and fluxes. High-temperature alloy lances on the furnace sidewall continuously spray high-pressure oxygen-enriched streams onto the molten pool surface, driving the rapid reduction of lead oxides to generate liquid crude lead. Two separate discharge ports are located at the furnace bottom or side, respectively for discharging the bottom-deposited crude lead molten metal and periodically discharging the slag formed on the upper layer. A flue gas exhaust pipe is installed at the top of the equipment, directly connected to a waste heat boiler and dust removal system, enabling high-temperature flue gas waste heat recovery and environmental treatment. The entire operation process aims to improve metal recovery rate and reduce energy consumption through precise control of oxygen flow rate, material ratio, and smelting temperature parameters.

[0003] The inventors have discovered at least the following problems in the prior art:

[0004] When using existing oxygen-enriched side-blown smelting furnaces, the anthracite and limestone are added in a free-fall manner, which causes the reducing agent and flux to concentrate in local areas of the furnace, resulting in uneven material distribution. This not only easily leads to local over-reaction or reaction lag, but also causes problems such as charge agglomeration and poor flow of the molten pool, which seriously affect smelting efficiency and product quality stability.

[0005] Therefore, this solution provides an oxygen-enriched side-blown smelting equipment to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an oxygen-enriched side-blown smelting device to solve the problem in the prior art where uneven feeding of materials leads to localized reactions, thereby limiting product quality.

[0007] To solve the above-mentioned technical problems, the basic technical solution proposed by this utility model is as follows:

[0008] An oxygen-enriched side-blown smelting device includes a furnace mechanism. Three evenly arranged feed hoppers are positioned above the furnace mechanism. A mixing and distributing mechanism is located inside the furnace mechanism, and a baffle mechanism is positioned on one side of the mixing and distributing mechanism. The mixing and distributing mechanism includes a mixing box and a mixing paddle rotatably connected inside the mixing box. A discharge chute is located below the mixing box, and a distributing vibrating plate is positioned below the discharge chute. One side of the distributing vibrating plate is rotatably connected to the mixing box. The baffle mechanism includes a receiving plate fixedly connected to one side of the mixing box and a spring assembly positioned below the receiving plate. The spring assembly includes a rebound baffle, one side of which is rotatably connected to the lower part of the receiving plate. A transmission box is fixedly connected above the receiving plate. The furnace mechanism includes a furnace body and oxygen injection heads evenly arranged on both sides of the furnace body. The top of the mixing box is fixedly connected to the inner wall of the furnace body and communicates with the feed hoppers. A drive motor and a servo motor are installed on the outer side of the furnace body.

[0009] Preferably, the output end of the drive motor is connected to the mixing paddle, and eccentric wheels are rotatably connected to both sides of the outside of the mixing box. A drive sprocket and a linkage sprocket are rotatably connected inside the mixing box, and the drive sprocket and the linkage sprocket are connected by a chain.

[0010] Preferably, the drive sprocket is coaxial with the output end of the drive motor and the mixing paddle, the linkage sprocket is coaxial with the eccentric wheel, the outer side of the eccentric wheel is rotatably connected to the connecting rod, and the lower end of the connecting rod is rotatably connected to the material distributing vibration plate.

[0011] Preferably, the transmission box is rotatably connected to a drive shaft and a linkage shaft, and a chain and sprocket assembly is also movably connected inside the transmission box, the chain and sprocket assembly connecting the drive shaft and the linkage shaft.

[0012] Preferably, the output end of the servo motor is connected to the drive shaft, and two eccentric wheels are provided at both ends of the transmission box. The two eccentric wheels are fixedly connected to both ends of the linkage shaft, and a connecting rod is rotatably connected to the outer side of the two eccentric wheels.

[0013] Preferably, the bottom of the rebound baffle is fixedly connected with uniformly arranged material distribution guides, and the inclination angle of the multiple material distribution guides gradually increases from the middle two sides. The two ends of the rebound baffle are fixedly connected with connecting shafts, and the connecting shafts are rotatably connected to the lower end of the connecting rod two.

[0014] Preferably, the furnace body is provided with a flue gas outlet at the top, a feed inlet and a slag outlet on one side of the furnace body, and a discharge outlet on the other side.

[0015] The beneficial effects of this utility model are:

[0016] I. This utility model uses a mixing and distributing mechanism and a blocking mechanism to work together. The mixing paddle is driven by a drive motor to rotate, which performs preliminary mixing and conveying of the material entering the mixing box. At the same time, the linkage eccentric wheel drives the distributing shaking plate to swing back and forth, dispersing the material to the bottom of the discharge chute to form a preliminary uniform distribution effect.

[0017] II. This utility model uses a mixing and distributing mechanism and a blocking mechanism to work together. The spring component of the blocking mechanism drives the connecting rod 2 via a servo motor to make the rebound baffle swing at high frequency and stagger its frequency with the distributing shaking plate. Combined with the distributing guide bar with increasing tilt angle, the material is dispersed in a secondary direction, further eliminating local accumulation and promoting the fluidity of the molten pool.

[0018] In summary, this utility model, through the synergistic effect of the two-stage dispersion mechanism of the mixing and distributing mechanism and the baffle mechanism, enables the material to form a uniform distribution state in the furnace, significantly improving the phenomenon of local over-reaction or reaction lag, avoiding furnace charge agglomeration, and improving smelting efficiency and metal recovery rate; at the same time, the material homogenization treatment reduces energy consumption fluctuations caused by uneven reaction and enhances product quality stability. Attached Figure Description

[0019] Figure 1 This is a side cross-sectional view of the furnace mechanism according to Embodiment 1 of this utility model;

[0020] Figure 2 This is an embodiment of the present utility model. Figure 1 A schematic diagram of the middle section;

[0021] Figure 3 This is a schematic diagram of the mixing and dispensing mechanism according to Embodiment 1 of this utility model;

[0022] Figure 4 This is a schematic diagram of the material-stopping mechanism according to Embodiment 1 of this utility model;

[0023] Figure 5 This is a schematic diagram of the material assembly according to Embodiment 1 of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Furnace mechanism; 11. Furnace body; 12. Feed inlet; 13. Slag discharge outlet; 14. Discharge outlet; 15. Flue gas outlet; 16. Oxygen injection head; 2. Feed hopper;

[0026] 3. Mixing and distributing mechanism; 31. Mixing box; 32. Drive motor; 33. Mixing paddle; 34. Drive sprocket; 35. Linkage sprocket; 36. Eccentric wheel one; 37. Connecting rod one; 38. Distributing vibrating plate; 39. Discharge chute;

[0027] 4. Material blocking mechanism; 41. Receiving plate; 42. Servo motor; 43. Drive shaft; 44. Chain and sprocket assembly; 45. Linkage shaft; 46. Eccentric wheel II; 47. Connecting rod II; 48. Transmission box;

[0028] 49. Material spring assembly; 491. Bounce baffle; 492. Connecting shaft; 493. Material distribution guide bar. Detailed Implementation

[0029] Please refer to the following. Figures 1 to 5 As shown, the technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0030] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly.

[0031] This utility model provides an oxygen-enriched side-blown smelting device, including a furnace mechanism 1, three uniformly arranged feeding hoppers 2 are arranged above the furnace mechanism 1, a mixing and distributing mechanism 3 is arranged inside the furnace mechanism 1, and a baffle mechanism 4 is arranged on one side of the mixing and distributing mechanism 3.

[0032] The mixing and distributing mechanism 3 includes a mixing box 31 and a mixing paddle 33 rotatably connected inside the mixing box 31. A discharge chute 39 is provided below the mixing box 31, and a distributing shaking plate 38 is provided below the discharge chute 39. One side of the distributing shaking plate 38 is rotatably connected to the mixing box 31.

[0033] The material blocking mechanism 4 includes a receiving plate 41 fixedly connected to one side of the mixing box 31 and a spring material assembly 49 disposed below the receiving plate 41. The spring material assembly 49 includes a rebound baffle 491, one side of which is rotatably connected to the lower side of the receiving plate 41. A transmission box 48 is fixedly connected to the upper side of the receiving plate 41.

[0034] The furnace mechanism 1 includes a furnace body 11 and oxygen injection heads 16 evenly arranged on both sides of the furnace body 11. The top of the mixing box 31 is fixedly connected to the inner wall of the furnace body 11 and communicates with the feed hopper 2. A drive motor 32 and a servo motor 42 are installed on the outer side of the furnace body 11.

[0035] The furnace body 11, the feed port 12, the slag discharge port 13, the discharge port 14, the flue gas port 15, the oxygen injection head 16, and the feed hopper 2 constitute the oxygen-enriched side-blown melting furnace in the prior art. The furnace mechanism 1 has an external control device that can operate the drive motor 32 and the servo motor 42 and control the speed of the servo motor 42.

[0036] In a further embodiment, the output end of the drive motor 32 is connected to the mixing paddle 33, and eccentric wheels 36 are rotatably connected to both sides of the outside of the mixing box 31. The inside of the mixing box 31 is rotatably connected to the drive sprocket 34 and the linkage sprocket 35, which are connected by a chain.

[0037] In this embodiment, when the drive motor 32 operates, it will not only rotate the mixing paddle 33, but also drive the sprocket 34, the linkage sprocket 35 and the chain to rotate the eccentric wheel 36, thereby causing one side of the material distributing shaking plate 38 to shake up and down, thereby dispersing the material; the rotating mixing paddle 33 can not only roughly mix the material in the mixing box 31, but also accelerate the material conveying to the discharge chute 39.

[0038] In a further embodiment, the drive sprocket 34 is coaxial with the output end of the drive motor 32 and the mixing paddle 33, the linkage sprocket 35 is coaxial with the eccentric wheel 36, the outer side of the eccentric wheel 36 is rotatably connected to the connecting rod 37, and the lower end of the connecting rod 37 is rotatably connected to the material distributing shaking plate 38.

[0039] In this embodiment, the material distribution shaking plate 38 has shafts at both ends, which can rotatably connect to the lower end of the connecting rod 37.

[0040] In a further embodiment, a drive shaft 43 and a linkage shaft 45 are rotatably connected inside the transmission box 48, and a chain and sprocket assembly 44 is also movably connected inside the transmission box 48, the chain and sprocket assembly 44 connecting the drive shaft 43 and the linkage shaft 45.

[0041] In this embodiment, the chain and sprocket assembly 44 consists of a chain and two sprockets, which allows the linkage shaft 45 to rotate when the drive shaft 43 rotates.

[0042] In a further embodiment, the output end of the servo motor 42 is connected to the drive shaft 43, and the two ends of the transmission box 48 are provided with eccentric wheels 46. The eccentric wheels 46 are fixedly connected to the two ends of the linkage shaft 45, and the outer side of the eccentric wheels 46 is rotatably connected to the connecting rod 47.

[0043] In this embodiment, both eccentric wheel 36 and eccentric wheel 46 are connected to the connecting rod by rotating the shaft at a non-center point to transmit power.

[0044] In a further embodiment, a uniformly arranged material distribution guide bar 493 is fixedly connected below the rebound baffle 491. The tilt angle of the multiple material distribution guide bars 493 gradually increases from the middle two sides. A connecting shaft 492 is fixedly connected to both ends of the rebound baffle 491. The connecting shaft 492 is rotatably connected to the lower end of the connecting rod 47.

[0045] In this embodiment, the lower end surface of the rebound baffle 491 is made of a wear-resistant and high-strength material, and can rebound the material. Since the material dispersed from the eccentric wheel 36 is in the same direction, but the up-and-down reciprocating amplitude of the rebound baffle 491 is not the same as that of the eccentric wheel 36, the angle at which the material dispersed by the eccentric wheel 36 contacts the bottom of the rebound baffle 491 changes, thus further dispersing the material. The upper end of the rebound baffle 491 is a smooth surface, so some material can slide off naturally when it reaches the top. The arranged material distribution guides 493 have a small opening on one side and a large opening on the other side, in a scattering state, thereby dispersing and guiding the material.

[0046] In a further embodiment, a flue gas outlet 15 is provided above the furnace body 11, a feed inlet 12 and a slag discharge outlet 13 are provided on one side of the furnace body 11, and a discharge outlet 14 is provided on the other side.

[0047] In this embodiment, the feed port 12 is used to pour in hot lead slag; the feed hopper 2 is used to pour in reducing agent and flux; the slag discharge port 13 is used to discharge secondary lead slag; and the discharge port 14 is used to produce crude lead fluid and pour it into the mold for further processing.

[0048] The working principle of this utility model is as follows:

[0049] When the reducing agent and flux enter the furnace body 11 through the feed hopper 2, they first enter the mixing box 31. Then, the drive motor 32 and servo motor 42 are operated by the external control equipment. The operation of the drive motor 32 will cause the mixing paddle 33 to rotate at high speed, thereby roughly mixing the reducing agent and flux that have entered the mixing box 31. Then, they are discharged from the discharge chute 39. At this time, the operation of the drive motor 32 will also cause the eccentric wheel 36 to rotate through the drive sprocket 34 and the linkage sprocket 35. Then, the connecting rod 37 will cause the material distributing shaking plate 38 to swing up and down repeatedly to shake and disperse the falling material.

[0050] The operation of the servo motor 42 drives the linkage shaft 45 to rotate inside the transmission box 48 via the drive shaft 43 and the chain and sprocket assembly 44. This causes the eccentric wheels 46 at both ends of the linkage shaft 45 to rotate as well. In turn, the connecting rod 47 causes the material feed assembly 49 to swing up and down. By controlling the speed of the servo motor 42, the swing frequency of the material feed assembly 49 can be staggered from the swing frequency of the material distribution shaking plate 38. This allows the material dispersed by the material distribution shaking plate 38 to be dispersed to the upper and lower ends of the rebound baffle 491. The material that comes into contact with the lower end of the rebound baffle 491 will be guided by the material distribution guide 493 and rebounded by the rebound baffle 491 itself, further dispersing the material. The material that reaches the upper end of the rebound baffle 491 will be naturally guided by the arc-shaped rebound baffle 491 and intersect with the rebounded material.

[0051] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An oxygen-enriched side-blown smelting apparatus, comprising a furnace mechanism (1), characterized in that, Three feeding hoppers (2) are evenly arranged above the furnace mechanism (1), and a mixing and distributing mechanism (3) is provided inside the furnace mechanism (1). A material blocking mechanism (4) is provided on one side of the mixing and distributing mechanism (3). The mixing and distributing mechanism (3) includes a mixing box (31) and a mixing paddle (33) rotatably connected inside the mixing box (31). A discharge chute (39) is provided below the mixing box (31), and a distributing shaking plate (38) is provided below the discharge chute (39). One side of the distributing shaking plate (38) is rotatably connected to the mixing box (31). The material blocking mechanism (4) includes a receiving plate (41) fixedly connected to one side of the mixing box (31) and a spring material assembly (49) disposed below the receiving plate (41). The spring material assembly (49) includes a rebound baffle (491). One side of the rebound baffle (491) is rotatably connected to the bottom of the receiving plate (41), and a transmission box (48) is fixedly connected to the top of the receiving plate (41). The furnace mechanism (1) includes a furnace body (11) and oxygen injection heads (16) evenly arranged on both sides of the furnace body (11). The top of the mixing box (31) is fixedly connected to the inner wall of the furnace body (11) and communicates with the feed hopper (2). A drive motor (32) and a servo motor (42) are installed on the outer side of the furnace body (11).

2. The oxygen-enriched side-blown smelting equipment according to claim 1, characterized in that: The output end of the drive motor (32) is connected to the mixing paddle (33). The two sides of the outside of the mixing box (31) are rotatably connected to the eccentric wheel (36). The inside of the mixing box (31) is rotatably connected to the drive sprocket (34) and the linkage sprocket (35). The drive sprocket (34) and the linkage sprocket (35) are connected by a chain.

3. The oxygen-enriched side-blown smelting equipment according to claim 2, characterized in that: The drive sprocket (34) is connected to the output end of the drive motor (32) and coaxial with the mixing paddle (33). The linkage sprocket (35) is coaxial with the eccentric wheel (36). The outer side of the eccentric wheel (36) is rotatably connected to the connecting rod (37), and the lower end of the connecting rod (37) is rotatably connected to the material distributing shaking plate (38).

4. The oxygen-enriched side-blown smelting equipment according to claim 1, characterized in that: The transmission box (48) is rotatably connected to a drive shaft (43) and a linkage shaft (45). The transmission box (48) is also movably connected to a chain and sprocket assembly (44), which connects the drive shaft (43) and the linkage shaft (45).

5. The oxygen-enriched side-blown smelting equipment according to claim 1, characterized in that: The output end of the servo motor (42) is connected to the drive shaft (43). The two ends of the transmission box (48) are provided with eccentric wheels (46). The eccentric wheels (46) are fixedly connected to the two ends of the linkage shaft (45). The outer side of the eccentric wheels (46) is rotatably connected to the connecting rod (47).

6. The oxygen-enriched side-blown smelting equipment according to claim 1, characterized in that: The rebound baffle (491) is fixedly connected to a uniformly arranged material guide bar (493) below. The angle of inclination of the multiple material guide bars (493) gradually increases from the middle two sides. The two ends of the rebound baffle (491) are fixedly connected to a connecting shaft (492), and the connecting shaft (492) is rotatably connected to the lower end of the connecting rod two (47).

7. The oxygen-enriched side-blown smelting equipment according to claim 1, characterized in that: The furnace body (11) is provided with a flue gas outlet (15) on the top, a feed inlet (12) and a slag outlet (13) on one side of the furnace body (11), and a discharge outlet (14) on the other side.

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