Ceramic construction blast furnace top bin

Abstract

The utility model relates to the technical field of furnace top material tank, concretely to a ceramic structure blast furnace top material tank, include: tank body, the top surface of tank body is opened with feed inlet, the inboard of tank body is installed with lining structure, the lining structure includes zirconium oxide toughened ceramic lining, zirconium oxide toughened ceramic lining swing installation is in the inner wall of tank body, the side wall of zirconium oxide toughened ceramic lining is opened with lock groove, the other side wall of zirconium oxide toughened ceramic lining integrative has lock block, the front of zirconium oxide toughened ceramic lining is opened with installation groove. The zirconium oxide toughened ceramic lining that the utility model sets up has good wear resistance, and wear resistance is 5 6 times of cast steel lining, can greatly improve the life of lining structure, and alumina toughened ceramic material quality has good performance price ratio compared with cast steel material quality, and one maintenance period can reduce more than 1 / 3 cost, and the economy is higher.

Description

Technical Field

[0001] This utility model relates to the field of furnace top charging tank technology, specifically a ceramic structure blast furnace top charging tank. Background Technology

[0002] Blast furnace ironmaking is the main method of modern ironmaking. Among them, the blast furnace top charging equipment is called the throat of the blast furnace. The top equipment is divided into five parts from top to bottom: receiving hopper, upper valve box, charging tank, lower valve box, and material distributor. As the core equipment of the top equipment, the charging tank plays an important role in storing materials and sealing the top gas.

[0003] The material tank is subjected to constant impact and scouring from materials and furnace airflow, which causes severe wear on the liner. The traditional material is cast alloy liner, which has a short lifespan and often affects production due to liner breakage.

[0004] Therefore, in order to solve the above problems, a ceramic structure blast furnace top charge hopper is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a ceramic structure blast furnace top charge tank to solve the problem mentioned in the background art that the charge tank is subjected to long-term impact and scouring by materials and furnace airflow, resulting in particularly severe wear on the lining plate. The traditional material is cast alloy lining plate, which has a short service life and often affects production due to lining plate damage.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a ceramic structure blast furnace top charge tank, comprising: a tank body, wherein a charge inlet is provided on the top surface of the tank body;

[0007] The inner side of the tank is equipped with a liner structure, which includes a zirconia toughened ceramic liner. The zirconia toughened ceramic liner is movably installed on the inner wall of the tank. A locking groove is formed on one side wall of the zirconia toughened ceramic liner, and a locking block is integrally formed on the other side wall of the zirconia toughened ceramic liner. An installation groove is formed on the front side of the zirconia toughened ceramic liner. Bolts are welded to the inner wall of the tank. A positioning block is fitted on the outside of the bolts. A nut is threaded onto the outside of the bolts. A sealing block is engaged on the inside of the installation groove. A threaded sleeve is integrally formed on the back of the sealing block.

[0008] Preferably, the zirconia toughened ceramic liner is arc-shaped and adapted to the inner wall of the tank, and the back of the zirconia toughened ceramic liner is coated with high-temperature ceramic adhesive.

[0009] Preferably, the lock block is adapted to the lock groove.

[0010] Preferably, the inner diameter of the mounting groove is larger than the diameter of the bolt, and the bolt is inserted inside the mounting groove.

[0011] Preferably, the inner diameter of the positioning block is the same as the diameter of the bolt, and the outer wall of the positioning block abuts against the inner wall of the mounting groove.

[0012] Preferably, the surface of the nut is in contact with the surface of the positioning block, and the threaded sleeve is movably mounted on the end of the bolt via threads.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the zirconia toughened ceramic liner provided by this utility model has good wear resistance, which is 5-6 times that of the cast steel liner, which can significantly improve the service life of the liner structure. Moreover, the alumina toughened ceramic material has a better cost performance than the cast steel material, and the cost can be reduced by more than 1 / 3 in one maintenance cycle, making it more economical.

[0014] This invention utilizes a liner structure. High-temperature ceramic adhesive is applied to the back of a zirconia-toughened ceramic liner. The zirconia-toughened ceramic liner is then fitted onto the outside of a bolt via an installation groove, allowing the high-temperature ceramic adhesive to contact the inner wall of the tank. A gap exists between the installation groove and the bolt. Before the high-temperature ceramic adhesive cures, the zirconia-toughened ceramic liner is moved so that a locking block on the zirconia-toughened ceramic liner is inserted into the locking groove of another adjacent set of zirconia-toughened ceramic liners, thus locking the two adjacent sets of zirconia-toughened ceramic liners together. A positioning block is fitted onto the outside of the bolt, and a nut is screwed onto the bolt. As the nut rotates, it pushes the positioning block, causing it to conform to the inner wall of the installation groove, thus allowing the zirconia-toughened ceramic liner to move. The plate, with the mounting groove centered on the outside of the bolt, and the bolt engaging with the positioning block, secures the zirconia toughened ceramic liner to the inner wall of the tank. Finally, rotating the sealing block screws the threaded sleeve onto the bolt end, sealing the inner end of the mounting groove and preventing damage to the nut from materials, thus ensuring the installation stability of the zirconia toughened ceramic liner. Zirconia toughened ceramic has high strength, reaching a Mohs strength of 8.5, second only to diamond, and a high melting point of approximately 2715℃. It also possesses excellent resistance to acid and alkali corrosion, effectively resisting gas corrosion. It is an excellent alternative to cast liners, increasing their lifespan by 2-3 times and creating better conditions for blast furnace production. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection state of the liner structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the liner structure of this utility model;

[0018] Figure 4This is a top sectional view of the mounting groove structure of this utility model.

[0019] In the diagram: 1. Tank body; 11. Inlet; 2. Liner structure; 21. Zirconia toughened ceramic liner; 22. Locking groove; 23. Locking block; 24. Mounting groove; 25. Bolt; 26. Positioning block; 27. Nut; 28. Sealing block; 29. ​​Threaded sleeve. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-4 The present invention provides an embodiment of a ceramic structure blast furnace top charging hopper:

[0022] The tank 1 and the feed inlet 11 used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0023] A ceramic structure blast furnace top charging tank includes: a tank body 1, with a charging inlet 11 on the top surface of the tank body 1;

[0024] A liner structure 2 is installed on the inner side of the tank body 1. The liner structure 2 includes a zirconia toughened ceramic liner 21, which is movably installed on the inner wall of the tank body 1. A locking groove 22 is provided on one side wall of the zirconia toughened ceramic liner 21, and a locking block 23 is integrally formed on the other side wall of the zirconia toughened ceramic liner 21. An installation groove 24 is provided on the front side of the zirconia toughened ceramic liner 21. Bolts 25 are welded on the inner wall of the tank body 1. A positioning block 26 is sleeved on the outside of the bolts 25, and a nut 27 is threadedly connected to the outside of the bolts 25. A sealing block 28 is engaged on the inner side of the installation groove 24, and a threaded sleeve 29 is integrally formed on the back of the sealing block 28. The zirconia toughened ceramic liner 21 has good wear resistance, which is 5-6 times that of cast steel liners. It can significantly improve the service life of the liner structure 2. Moreover, the alumina toughened ceramic material has a better cost performance than cast steel material. The cost can be reduced by more than 1 / 3 in one maintenance cycle, making it more economical.

[0025] Furthermore, the zirconia toughened ceramic liner 21 is arc-shaped and fits the inner wall of the tank 1. The back of the zirconia toughened ceramic liner 21 is coated with high-temperature ceramic adhesive, which can fill the gap between the zirconia toughened ceramic liner 21 and the tank 1, and assist in the fixed installation of the zirconia toughened ceramic liner 21.

[0026] Furthermore, the locking block 23 is adapted to the locking groove 22, and the locking block 23 can be inserted into the locking groove 22 when the two sets of zirconia toughened ceramic liners 21 are spliced ​​together.

[0027] Furthermore, the inner diameter of the mounting groove 24 is larger than the diameter of the bolt 25. The bolt 25 is inserted inside the mounting groove 24, and the zirconia toughened ceramic liner 21 can move outside the bolt 25 through the mounting groove 24.

[0028] Furthermore, the inner diameter of the positioning block 26 is the same as the diameter of the bolt 25, and the outer wall of the positioning block 26 abuts against the inner wall of the mounting groove 24. When the positioning block 26 moves on the bolt 25, it can push the mounting groove 24, so that the zirconia toughened ceramic liner 21 can move, making it easier for the locking block 23 to be inserted into the locking groove 22.

[0029] Furthermore, the surface of the nut 27 is in contact with the surface of the positioning block 26, and the threaded sleeve 29 is installed on the end of the bolt 25 by means of threads. The nut 27 provides power for the movement of the positioning block 26 on the bolt 25, and the threaded sleeve 29, in conjunction with the bolt 25, can assist in the installation of the sealing block 28.

[0030] Working principle: During installation, high-temperature ceramic adhesive is applied to the back of the zirconia toughened ceramic liner 21. The zirconia toughened ceramic liner 21 is then fitted onto the outside of the bolt 25 through the mounting groove 24, allowing the high-temperature ceramic adhesive to contact the inner wall of the tank 1. A gap exists between the mounting groove 24 and the bolt 25. Before the high-temperature ceramic adhesive cures, the zirconia toughened ceramic liner 21 is moved so that the locking block 23 on the zirconia toughened ceramic liner 21 is inserted into the locking groove 22 of another set of zirconia toughened ceramic liner 21 in an adjacent position, thus locking the two adjacent sets of zirconia toughened ceramic liner 21 together. The positioning block 26 is then fitted onto the outside of the bolt 25, and the bolt is then... The nut 27 is screwed onto the bolt 25. When the nut 27 rotates, it pushes the positioning block 26, causing the positioning block 26 to fit against the inner wall of the mounting groove 24. This pushes the zirconia toughened ceramic liner 21, making the mounting groove 24 centered outside the bolt 25. The bolt 25, in conjunction with the positioning block 26, can fix the installation of the zirconia toughened ceramic liner 21 on the inner wall of the tank 1. Finally, the sealing block 28 is rotated, and the threaded sleeve 29 is screwed onto the end of the bolt 25. The sealing block 28 can seal the inner end of the mounting groove 24, which can seal the inner side of the mounting groove 24, prevent the nut 27 from being damaged by the material, and ensure the installation stability of the zirconia toughened ceramic liner 21.

[0031] Zirconia toughened ceramics have high strength, with a Mohs strength of 8.5, second only to diamond, and a high melting point of about 2715℃. They also have excellent resistance to acid and alkali corrosion and can effectively resist the corrosion of coal gas. They are an excellent alternative to cast linings, which can increase the service life of linings by 2-3 times, creating conditions for blast furnace production.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A ceramic structure blast furnace top charge tank, comprising: a tank body (1), wherein a charge inlet (11) is provided on the top surface of the tank body (1); Its features are: The inner side of the tank (1) is equipped with a liner structure (2), which includes a zirconia toughened ceramic liner (21). The zirconia toughened ceramic liner (21) is movably installed on the inner wall of the tank (1). A locking groove (22) is provided on one side wall of the zirconia toughened ceramic liner (21), and a locking block (23) is integrally formed on the other side wall of the zirconia toughened ceramic liner (21). An installation groove (24) is provided on the front side of the zirconia toughened ceramic liner (21). A bolt (25) is welded on the inner wall of the tank (1). A positioning block (26) is sleeved on the outside of the bolt (25). A nut (27) is threadedly connected to the outside of the bolt (25). A sealing block (28) is clamped on the inner side of the installation groove (24). A threaded sleeve (29) is integrally formed on the back side of the sealing block (28).

2. The ceramic structure blast furnace top charge hopper according to claim 1, characterized in that: The zirconia toughened ceramic liner (21) is arc-shaped and fits the inner wall of the tank (1). The back of the zirconia toughened ceramic liner (21) is coated with high-temperature ceramic adhesive.

3. The ceramic structure blast furnace top charge hopper according to claim 1, characterized in that: The locking block (23) is adapted to the locking groove (22).

4. A ceramic structure blast furnace top charge hopper according to claim 1, characterized in that: The inner diameter of the mounting groove (24) is larger than the diameter of the bolt (25), and the bolt (25) is inserted inside the mounting groove (24).

5. A ceramic structure blast furnace top charge hopper according to claim 1, characterized in that: The inner diameter of the positioning block (26) is the same as the diameter of the bolt (25), and the outer wall of the positioning block (26) abuts against the inner wall of the mounting groove (24).

6. A ceramic structure blast furnace top charge hopper according to claim 1, characterized in that: The surface of the nut (27) is in contact with the surface of the positioning block (26), and the threaded sleeve (29) is installed on the end of the bolt (25) by means of thread.

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