A cooling device for residual iron of a super large blast furnace
By designing a cooling device for extra-large blast furnaces, the problems of equipment damage and safety risks during the discharge of residual iron in large blast furnaces have been solved, achieving efficient cooling and temporary storage of molten iron and improving the service life and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANYANG IRON & STEEL
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-21
AI Technical Summary
When blast furnaces are tapping residual iron, the large diameter of the hearth, the difficulty in controlling its activity, the compact layout of the taphole, the deep dead iron layer, the large amount of residual iron, and the high temperature of the sidewall of the hearth in the later stage make the tapping operation difficult and risky.
Design a cooling device for an extra-large blast furnace, including the blast furnace body, a first chute, a residual iron pool, a cooling pool, a third chute, and a receiving pool. The cooling pools are arranged in a matrix and are equipped with a high-temperature resistant layer and a refractory brick layer. Molten iron flows through different chute to be cooled and temporarily stored, thereby extending the service life of the equipment.
It improves the efficiency of residual iron handling, reduces the risk of equipment damage, extends equipment lifespan, and enhances safety and production efficiency.
Smart Images
Figure CN224530922U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cooling devices, and more specifically, to a cooling device for tapping residual iron from an extra-large blast furnace. Background Technology
[0002] Large blast furnaces with a capacity of 4000 cubic meters are a significant development trend in the 21st century. This trend not only increases industrial concentration but also reduces emissions and pollution, improves production efficiency, and lowers process energy consumption and costs. However, blast furnaces larger than 4000 cubic meters face challenges due to their large hearth diameter, difficulty in controlling activity, compact layout of the four tapholes, deep dead iron layers, large amounts of residual iron, and high sidewall temperatures in the later stages of hearth operation, posing significant safety risks. Therefore, a cooling device for residual iron discharge in ultra-large blast furnaces is urgently needed. Summary of the Invention
[0003] The purpose of this application is to provide a cooling device for tapping residual iron in a super-large blast furnace, which can solve the above-mentioned technical problems.
[0004] This application provides a cooling device for discharging residual iron from an extra-large blast furnace, comprising a blast furnace body, a first chute, a residual iron pool, a second chute, a cooling pool, a third chute, and a receiving pool. Multiple cooling pools are provided and arranged in a matrix. One end of the first chute is connected to the discharge end of the blast furnace body, and the other end of the first chute is connected to the residual iron pool. The residual iron pool is connected to multiple cooling pools via the second chute, and the residual iron pool is connected to the receiving pool via the third chute.
[0005] Preferably, both the first chute and the third chute are inclined, and both the inner walls of the first chute and the third chute are provided with a high-temperature resistant layer, the thickness of which is at least 10 cm.
[0006] Preferably, the residual iron pool includes an outer shell layer, a first refractory brick layer, and a casting layer. The first refractory brick layer is disposed between the outer shell layer and the casting layer. The outer shell layer is made of steel. The thickness of the casting layer is at least 20 cm, and the thickness of the first refractory brick layer is at least 6 cm.
[0007] Preferably, the casting layer is arranged in a "U" shape.
[0008] Preferably, the cooling pool is provided with multiple interconnected single-mold pools, the inner wall of the cooling pool is provided with a second refractory brick layer, an explosion-proof channel is provided below the second refractory brick layer, and a coke powder layer is provided inside the explosion-proof channel.
[0009] Preferably, the inner wall of the containment pool is provided with a third layer of refractory bricks.
[0010] Preferably, the length of the single-mode pool is 100-300cm and the width of the single-mode pool is 75-150cm.
[0011] The beneficial effects of this utility model are:
[0012] This utility model provides a cooling device for discharging residual iron from an extra-large blast furnace, comprising a blast furnace body, a first chute, a residual iron pool, a second chute, a cooling pool, a third chute, and a receiving pool. Multiple cooling pools are arranged in a matrix. One end of the first chute connects to the discharge end of the blast furnace body, and the other end connects to the residual iron pool. The residual iron pool is connected to multiple cooling pools via the second chute, and the residual iron pool is connected to the receiving pool via the third chute. When residual iron needs to be discharged from the blast furnace body, the first chute is opened, and the molten iron inside the blast furnace body flows into the residual iron pool. The molten iron inside the residual iron pool flows into the cooling pool via the second chute for cooling. When the residual iron pool reaches a warning line, the third chute is opened to allow the molten iron exceeding the warning line to flow into the receiving pool for temporary storage. This utility model can handle the discharge of residual iron from large blast furnaces with high efficiency. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 A cross-sectional view of a residual iron pool of a utility model;
[0016] Figure 3 This is a cross-sectional view of the cooling pool of the utility model.
[0017] Figure 4 This is a top view of the utility model;
[0018] Figure 5 This is a partial structural schematic diagram of the utility model.
[0019] The reference numerals in the attached figures are as follows:
[0020] 1. Blast furnace body; 2. First chute; 3. Residual iron pool; 4. Second chute; 5. Cooling pool; 6. Third chute; 7. Receiving pool; 8. High-temperature resistant layer; 9. Outer shell layer; 10. First refractory brick layer; 11. Casting layer; 12. Single mold pool; 13. Second refractory brick layer; 14. Explosion-proof passage; 15. Coke powder layer; 16. Third refractory brick layer. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0027] like Figure 1-5 As shown in Figure 3, a cooling device for discharging residual iron in an extra-large blast furnace includes a blast furnace body 1, a first chute 2, a residual iron pool 3, a second chute 4, a cooling pool 5, a third chute 6, and a receiving pool 7. Multiple cooling pools 5 are arranged in a matrix. One end of the first chute 2 is connected to the discharge end of the blast furnace body 1, and the other end of the first chute 2 is connected to the residual iron pool 3. The residual iron pool 3 is connected to multiple cooling pools 5 through the second chute 4. The third chute 6 is connected to the receiving pool 7. When the blast furnace body 1 of this utility model needs to discharge residual iron, the first chute 2 is opened, and the molten iron inside the blast furnace body 1 flows into the residual iron pool 3 through the first chute 2. The molten iron inside the residual iron pool 3 flows into the cooling pool 5 through the second chute 4 and is cooled by the cooling pool 5. When the residual iron pool 3 reaches the warning line, the third chute 6 is opened to let the molten iron exceeding the warning line flow into the receiving pool 7 for temporary storage. This utility model can handle the discharge of residual iron from large blast furnaces and has high processing efficiency.
[0028] In this embodiment, the first chute 2 and the third chute 6 are both inclined. The inner walls of the first chute 2 and the third chute 6 are both provided with a high-temperature resistant layer 8. The thickness of the high-temperature resistant layer 8 is at least 10cm. The high-temperature resistant layer 8 of this utility model can prevent the first chute 2 and the third chute 6 from being damaged during use and extend the service life of the first chute 2 and the third chute 6.
[0029] In this embodiment, the residual iron pool 3 includes an outer shell layer 9, a first refractory brick layer 10, and a casting layer 11. The first refractory brick layer 10 is disposed between the outer shell layer 9 and the casting layer 11. The outer shell layer 9 is made of steel. The thickness of the casting layer 11 is at least 20 cm, and the thickness of the first refractory brick layer 10 is at least 6 cm. The first refractory brick layer 10 and the casting layer 11 of this utility model can prevent molten iron from damaging the outer shell layer 9 and can extend the service life of the residual iron pool 3.
[0030] In this embodiment, the casting layer 11 is arranged in a "U" shape to facilitate the flow of molten iron through the second chute 4 to the cooling pool 5.
[0031] In this embodiment, the cooling pool 5 is provided with a plurality of interconnected single-mold pools 12. The inner wall of the cooling pool 5 is provided with a second refractory brick layer 13. An explosion-proof channel 14 is provided under the second refractory brick layer 13. A coke powder layer 15 is provided inside the explosion-proof channel 14. The single-mold layer of this utility model is convenient for heat dissipation, and the explosion-proof channel 14 of this utility model maintains the load while having a ventilation function.
[0032] In this embodiment, in order to extend the service life of the container pool 7, a third refractory brick layer 16 is provided on the inner wall of the container pool 7.
[0033] In this embodiment, the length of the single-mold pool 12 is 100-300cm and the width of the single-mold pool 12 is 75-150cm. Specifically, a single-mold pool 12 of suitable size can be selected according to the requirements.
[0034] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A cooling device for tapping residual iron in an extra-large blast furnace, characterized in that: The furnace includes a blast furnace body, a first chute, a residual iron pool, a second chute, a cooling pool, a third chute, and a receiving pool. Multiple cooling pools are provided and arranged in a matrix. One end of the first chute is connected to the discharge end of the blast furnace body, and the other end of the first chute is connected to the residual iron pool. The residual iron pool is connected to multiple cooling pools through the second chute, and the residual iron pool is connected to the receiving pool through the third chute.
2. A cooling device for tapping residual iron in an extra-large blast furnace according to claim 1, characterized in that: Both the first chute and the third chute are inclined, and both the inner walls of the first chute and the third chute are provided with a high-temperature resistant layer, the thickness of which is at least 10cm.
3. A cooling device for tapping residual iron in an extra-large blast furnace according to claim 1, characterized in that: The residual iron pool includes an outer shell layer, a first refractory brick layer, and a casting layer. The first refractory brick layer is disposed between the outer shell layer and the casting layer. The outer shell layer is made of steel. The thickness of the casting layer is at least 20 cm, and the thickness of the first refractory brick layer is at least 6 cm.
4. A cooling device for tapping residual iron in an extra-large blast furnace according to claim 3, characterized in that: The pouring layer is arranged in a "U" shape.
5. A cooling device for tapping residual iron in an extra-large blast furnace according to claim 1, characterized in that: The cooling pool contains multiple interconnected single-mold pools. The inner wall of the cooling pool is provided with a second refractory brick layer. An explosion-proof channel is provided below the second refractory brick layer, and a coke powder layer is provided inside the explosion-proof channel.
6. A cooling device for tapping residual iron in an extra-large blast furnace according to claim 1, characterized in that: The inner wall of the containment pool is provided with a third layer of refractory bricks.
7. A cooling device for tapping residual iron in an extra-large blast furnace according to claim 5, characterized in that: The length of the single-mode pool is 100-300cm, and the width of the single-mode pool is 75-150cm.