Antimony concentrate molten pool top-blowing equipment

Abstract

The utility model relates to the technical field of antimony concentrate smelting equipment, in particular to antimony concentrate molten pool top blowing equipment which comprises an oxygen lance, a spray head arranged outside the oxygen lance, a protective cylinder arranged outside the oxygen lance, a mounting mechanism comprising a threaded plate and an internal thread, and a connecting cylinder fixedly arranged on one side of the protective cylinder close to the spray head. The two threaded plates are movably sleeved with a sealing gasket, the sealing gasket is pushed till the sealing gasket moves to the end, away from the spray head, of the oxygen lance, the end, provided with a baffle, of the protection barrel is in threaded connection with the outer portions of the threaded plates, and the protection barrel continues to be rotated till the protection barrel is tightly attached to the outer portion of the sealing gasket; at the moment, the connecting cylinder is slidably connected to the end, close to the spray head, of the oxygen lance, the protective cylinder is installed, and the protective cylinder can prevent slag and metal liquid drops in a high-temperature molten pool from directly sputtering to the oxygen lance, so that corrosion of the slag and the metal liquid drops to the surface of the oxygen lance is prevented, the service life of the oxygen lance is prolonged, and the replacement frequency of the oxygen lance is reduced; and therefore, the working intensity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of antimony concentrate smelting equipment, and in particular to a top blowing device for an antimony concentrate molten pool. Background Technology

[0002] The top-blowing equipment for molten antimony concentrate is a key piece of equipment used in antimony concentrate smelting. It accelerates the smelting process of antimony concentrate by blowing oxygen-enriched air or oxygen into the molten pool. It has the following structure:

[0003] 1. Oxygen lance: It consists of a lance body, a nozzle, and a cooling system. The lance body generally adopts a multi-layer sleeve structure. The nozzle is the part at the front of the oxygen lance that sprays oxygen. The main function of the cooling system is to remove the large amount of heat absorbed by the oxygen lance during the steelmaking process and ensure that the temperature of the lance body and the nozzle is within a safe range.

[0004] 2. Gas supply device: Provides the required gas, such as air, oxygen-enriched air, or pure oxygen, to the top-blowing air pipe or spray gun.

[0005] During use, the oxygen lance needs to be inserted into a high-temperature molten pool. Slag and molten metal droplets in the high-temperature molten pool splash directly onto the oxygen lance and nozzle, causing damage to their surfaces. While the nozzle is small and can be replaced, the oxygen lance is large in size and difficult to operate. The frequent replacement of the oxygen lance results in a high workload for the workers. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a top-blowing device for antimony concentrate molten pools. It solves the technical problems of oxygen lances needing to be inserted into high-temperature molten pools during use, where slag and molten metal droplets directly splash onto the oxygen lance and nozzle, causing damage to their surfaces. While the nozzles are small and can be replaced, the oxygen lances are large and difficult to operate, and frequent replacements of the oxygen lances result in high workload for workers.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A top-blowing device for antimony concentrate molten pool includes an oxygen lance, a nozzle mounted on the outside of the oxygen lance, a protective sleeve for shielding the oxygen lance, and an installation mechanism for assembling and disassembling the protective sleeve. The installation mechanism includes two threaded plates and internal threads. Both threaded plates are fitted to the outside of the oxygen lance. The internal threads are formed on the inside of the protective sleeve, which is threadedly connected to the outside of the two threaded plates. A connecting sleeve is fixedly mounted on the side of the protective sleeve near the nozzle, and the connecting sleeve is rotatably connected to the end of the oxygen lance near the nozzle.

[0009] Preferably, a sealing gasket is provided at the end of the oxygen lance away from the nozzle. The sealing gasket is movably fitted onto the outside of two threaded plates. A baffle for shielding slag is fixedly installed at the end of the protective cylinder near the sealing gasket. A circular groove is opened on the outside of the baffle, and the sealing gasket is located inside the circular groove.

[0010] Preferably, the baffle is provided with a handle for rotating the protective cylinder on the outside, and the baffle is provided with several slots on the outside, with the end of the handle engaging inside the slots.

[0011] Preferably, the oxygen lance has two limiting grooves on one side of each threaded plate, and each limiting groove is fitted with a limiting block, which is fixedly installed on the outside of the threaded plate.

[0012] Preferably, each limiting block is provided with a limiting spring on its exterior to restrict the movement of the limiting block, and each limiting block has a receiving groove on its exterior, with the end of the limiting spring fixedly connected to the interior of the receiving groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Before installing the oxygen lance, movably fit the sealing gasket onto the outside of the two threaded plates and push the sealing gasket until it moves to the end of the oxygen lance furthest from the nozzle. At this point, thread the protective sleeve with the baffle onto the outside of the threaded plates. Continue to rotate the protective sleeve until it fits tightly against the outside of the sealing gasket. Then, slide the connecting sleeve onto the end of the oxygen lance closest to the nozzle. The protective sleeve is now installed. The protective sleeve prevents slag and molten metal droplets in the high-temperature molten pool from splashing directly onto the oxygen lance, thus preventing these substances from corroding the surface of the oxygen lance, extending its service life, reducing the frequency of replacement, and consequently reducing the workload of the workers.

[0015] Second, the limiting groove on the oxygen lance cooperates with the limiting block on the threaded plate to ensure that the threaded plate will not rotate. At the same time, the limiting spring provides elastic clamping force to ensure the stability of the connection between the limiting block and the limiting groove, thereby facilitating the connection between the protective cylinder and the threaded plate. In addition, when the threaded plate is damaged, it can be directly disassembled and replaced with a new threaded plate, thereby improving the convenience of operation. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 Structural diagram of the central protective cylinder;

[0019] Figure 3 This utility model Figure 1 Exploded structural diagram of an oxygen lance;

[0020] Figure 4 This utility model Figure 3 Structural diagram of the threaded plate;

[0021] Figure 5 This utility model Figure 3 Cross-sectional view of the inner protective cylinder;

[0022] Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0023] Legend: 1. Oxygen lance; 2. Nozzle; 3. Protective sleeve; 4. Threaded plate; 5. Internal thread; 6. Connecting sleeve; 7. Receiving groove; 8. Sealing gasket; 9. Baffle; 10. Circular groove; 11. Handle; 12. Slot; 13. Limiting groove; 14. Limiting block; 15. Limiting spring. Detailed Implementation

[0024] This application provides a top-blowing device for antimony concentrate molten pool, which effectively solves the technical problems of oxygen lances needing to be inserted into high-temperature molten pools during use, where slag and molten metal droplets in the high-temperature molten pool directly splash onto the oxygen lance and nozzle, causing damage to their surfaces. While the nozzle is small and can be replaced, the oxygen lance is large in size, making the operation difficult, and frequent replacements of the oxygen lance result in high workload for the workers.

[0025] Example

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the technical solution in this application embodiment effectively solves the technical problem that during the use of an oxygen lance, it needs to be inserted into a high-temperature molten pool, and the slag and molten metal droplets in the high-temperature molten pool directly splash onto the oxygen lance and nozzle, causing damage to the surface of the oxygen lance and nozzle. While the nozzle is small and can be replaced, the oxygen lance is large in size, making the operation difficult, and the frequent replacement of the oxygen lance results in a high workload for the workers. The overall idea is as follows:

[0027] To address the problems existing in the prior art, this utility model provides a top blowing device for antimony concentrate molten pool, including an oxygen lance 1, a nozzle 2 installed on the outside of the oxygen lance 1, and a protective cylinder 3 for shielding the oxygen lance 1 on the outside of the oxygen lance 1. The protective cylinder 3 shields the part of the oxygen lance 1 that enters the molten pool. An installation mechanism for assembling and disassembling the protective cylinder 3 is provided on the outside of the oxygen lance 1. The installation mechanism includes threaded plates 4 and internal threads 5. There are two threaded plates 4, both of which are attached to the outside of the oxygen lance 1. The internal threads 5 are opened on the inside of the protective cylinder 3. The protective cylinder 3 is threadedly connected to the outside of the two threaded plates 4.

[0028] A connecting tube 6 is fixedly installed on the side of the protective cylinder 3 near the nozzle 2. The connecting tube 6 is rotatably connected to the end of the oxygen lance 1 near the nozzle 2.

[0029] A sealing gasket 8 is provided at the end of the oxygen lance 1 away from the nozzle 2, and the sealing gasket 8 is movably fitted onto the outside of the two threaded plates 4.

[0030] A baffle 9 for shielding slag is fixedly installed at one end of the protective cylinder 3 near the sealing gasket 8. A circular groove 10 is provided on the outside of the baffle 9, and the sealing gasket 8 is located inside the circular groove 10.

[0031] The baffle 9 is provided with a handle 11 for rotating the protective cylinder 3. Several slots 12 are provided on the outside of the baffle 9, and the end of the handle 11 is engaged in the inside of the slots 12.

[0032] The oxygen lance 1 has two limiting grooves 13 on one side of each threaded plate 4. Each limiting groove 13 is fitted with a limiting block 14, which is fixedly installed on the outside of the threaded plate 4.

[0033] Each limiting block 14 has a limiting spring 15 on its outside to restrict the movement of the limiting block 14. Each limiting block 14 has a receiving groove 7 on its outside, and the end of the limiting spring 15 is fixedly connected to the inside of the receiving groove 7.

[0034] Protective sleeve 3: prevents slag and molten metal droplets in the high-temperature molten pool from splashing directly onto oxygen lance 1, reduces high-temperature corrosion and mechanical wear, thereby delaying the aging and deformation of the oxygen lance 1 surface;

[0035] Threaded plate 4: It mates with the internal thread 5 of the protective cylinder 3 to achieve a detachable connection, so as to facilitate the disassembly and assembly of the protective cylinder 3;

[0036] Connecting cylinder 6: Located at the end of the protective cylinder 3 near the nozzle 2, it is rotatably connected to the oxygen lance 1, and blocks the connection between the threaded plate 4 and the internal thread 5 to reduce the impact of slag on the connection.

[0037] The sealing gasket 8 is located at the end of the oxygen lance 1 and is pressed against the end of the protective cylinder 3 to increase the stability of the connection of the protective cylinder 3.

[0038] Baffle 9 and groove 10: The groove 10 on the baffle 9 accommodates the sealing gasket 8, preventing splashed slag from contacting the sealing gasket 8;

[0039] Limiting groove 13 and limiting block 14: The limiting groove 13 on the oxygen gun 1 cooperates with the limiting block 14 on the threaded plate 4 to ensure that the threaded plate 4 will not rotate. At the same time, the limiting spring 15 provides elastic clamping force to ensure the stability of the connection between the limiting block 14 and the limiting groove 13, thereby facilitating the connection between the protective cylinder 3 and the threaded plate 4.

[0040] Handle 11 and slot 12: Handle 11 can be inserted into slot 12 on baffle 9 to provide leverage and facilitate manual rotation of protective cylinder 3. Multiple slots 12 are distributed to allow insertion of handle 11 at different angles.

[0041] Working principle:

[0042] First, before installing the oxygen lance 1, insert the limiting block 14 on the outside of the threaded plate 4 into the inside of the limiting groove 13, movably fit the sealing gasket 8 on the outside of the two threaded plates 4, and push the sealing gasket 8 until it moves to the end of the oxygen lance 1 away from the nozzle 2. At this time, thread the protective cylinder 3 with the baffle 9 on the outside of the threaded plate 4. Continue to rotate the protective cylinder 3 until it fits tightly against the outside of the sealing gasket 8. At this time, the connecting cylinder 6 is slidably connected to the end of the oxygen lance 1 near the nozzle 2. At this time, the installation of the protective cylinder 3 is completed.

[0043] The second step is to insert the handle 11 into the slot 12 and rotate the protective cylinder 3 in the opposite direction to disconnect the protective cylinder 3 from the oxygen lance 1. At this time, a new protective cylinder 3 can be installed. The protective cylinder 3 provides protection for the oxygen lance 1 and extends the service life of the oxygen lance 1.

[0044] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A top blown apparatus for smelting antimony concentrates comprising an oxygen lance (1) having a nozzle (2) mounted externally, characterised in that, The outside of the oxygen lance (1) is provided with a protective cylinder (3) for shielding the oxygen lance (1), and the outside of the oxygen lance (1) is provided with a mounting mechanism for disassembling and assembling the protective cylinder (3), which comprises two threaded plates (4) and an internal thread (5), the two threaded plates (4) are attached to the outside of the oxygen lance (1), and the internal thread (5) is arranged on the inner side of the protective cylinder (3), and the protective cylinder (3) is threadedly connected to the outside of the two threaded plates (4). Wherein, the side of the protective cylinder (3) close to the nozzle (2) is fixedly installed with a connecting cylinder (6), and the connecting cylinder (6) is rotatably connected to the end of the oxygen lance (1) close to the nozzle (2).

2. A top submerged lancing apparatus for antimony concentrate smelting according to claim 1, characterized in that, The end of the oxygen lance (1) away from the nozzle (2) is provided with a sealing gasket (8). Wherein, the sealing gasket (8) is movably sleeved on the outside of the two threaded plates (4).

3. A top submerged lancing apparatus for antimony concentrate smelting according to claim 2, characterized in that, The end of the protective cylinder (3) close to the sealing gasket (8) is fixedly installed with a baffle (9) for shielding slag. Wherein, the outside of the baffle (9) is provided with a circular groove (10), and the sealing gasket (8) is located in the circular groove (10).

4. A top submerged lancing apparatus for antimony concentrate smelting according to claim 3, characterized in that, The outside of the baffle (9) is provided with a handle (11) for rotating the protective cylinder (3).

5. A top submerged lancing apparatus for antimony concentrates smelting according to claim 3, characterized in that, The outside of the baffle (9) is provided with a plurality of clamping grooves (12). Wherein, the handle (11) is clamped in the inside of the clamping groove (12).

6. A top submerged lancing apparatus for antimony concentrate smelting according to claim 1, characterized in that, The side of the oxygen lance (1) corresponding to each threaded plate (4) is provided with two limiting grooves (13), and each limiting groove (13) is clamped with a limiting block (14). Wherein, the limiting block (14) is fixedly installed on the outside of the threaded plate (4).

7. A top submerged lancing apparatus for antimony concentrate smelting according to claim 6, characterized in that, The outside of each limiting block (14) is provided with a limiting spring (15) for limiting the movement of the limiting block (14).

8. A top submerged lancing apparatus for antimony concentrate smelting according to claim 6, characterized in that, The outside of each limiting block (14) is provided with a containing groove (7). Wherein, the end of the limiting spring (15) is fixedly connected to the inside of the containing groove (7).

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