A long-life arch-shaped roof cover copper water jacket of a side-blown furnace and a side-blown furnace

Abstract

The application relates to the technical field of copper water jacket, and particularly discloses a cast copper water jacket of an arch bridge-shaped furnace top cover of a long-service-life side-blown furnace and the side-blown furnace. The cast copper water jacket comprises a copper water jacket body, the copper water jacket body is provided with an arch-shaped part and flat parts arranged at two ends of the arch-shaped part, the arch-shaped part and the flat parts are integrally arranged, and a cooling channel is arranged in the copper water jacket body, the cooling channel is arranged in the arch-shaped part and the flat parts, wherein water inlet pipe heads and water outlet pipe heads extending to the outside of the copper water jacket body are arranged at two ends of the cooling channel respectively, the cooling channel is arranged in a bending mode in the copper water jacket body, the water inlet pipe heads and the water outlet pipe heads are connected to the two ends of the cooling channel respectively, efficient and uniform cooling of the furnace top cover area of the side-blown furnace is realized, meanwhile, the contact area between the cast copper water jacket and the inner area of the side-blown furnace is increased through the arrangement of the arch-shaped part, the heat exchange efficiency is enhanced, the cooling effect is improved, and the service life of the furnace top cover is further improved.

Description

Technical Field

[0001] This application relates to the field of copper water jacket technology, and in particular to a long-life arch bridge-shaped cast copper water jacket for a side-blown furnace and a side-blown furnace. Background Technology

[0002] In pyrometallurgy, the side-blown furnace is a crucial piece of equipment. With the continued growth in global demand for non-ferrous metals, smelting companies are placing increasingly higher performance requirements on side-blown furnaces. The furnace top cover, as part of the side-blown furnace, operates in harsh environments with high temperatures, strong heat radiation, and chemical corrosion. The high-temperature flue gas inside the furnace easily erodes and corrodes the top cover, gradually deteriorating its internal structure, leading to decreased mechanical strength, inability to withstand the pressure inside the furnace, and resulting in structural deformation and cracking. Ultimately, this shortens the lifespan of the side-blown furnace.

[0003] In related technologies, the cooling of the furnace top cover of a side-blown furnace is mainly achieved through a cooling structure consisting of a steel shell furnace cover inlaid with refractory material or a water jacket. However, since the temperature of the dome area of ​​the furnace top cover is higher than that of the arch foot area, and existing cooling structures focus more on the uniform arrangement of cooling pipes to achieve more efficient cooling of more areas of the furnace top, some areas are under-cooled and the temperature is too high, leading to accelerated aging and damage of the material; while some areas are over-cooled, resulting in uneven distribution of thermal stress on the furnace top cover, further reducing its service life. Utility Model Content

[0004] This application aims to propose a long-life arched bridge-shaped cast copper water jacket for a side-blown furnace and a side-blown furnace, in order to solve the technical problem in the related art that the furnace top cover of a side-blown furnace accelerates material aging and damage and reduces service life due to poor cooling effect at high temperatures.

[0005] To achieve the above objectives, in a first aspect, embodiments of this application provide a cast copper water jacket for a side-blown furnace with a long-life arched bridge-shaped furnace top cover. The cast copper water jacket includes a copper water jacket body, which has an arched portion and flat portions at both ends of the arched portion. The arched portion and the flat portions are integrally formed, and at least one cooling channel is provided within the copper water jacket body. The cooling channel is an irregularly shaped cooling channel, and the outer rectangle of the cooling channel covers the arched portion and the flat portions. The cooling channel includes at least one bent section located in the flat portion.

[0006] In some embodiments, the leveling portion includes a first leveling portion and a second leveling portion respectively disposed at both ends of the arched portion, and both ends of the cooling channel extend to the first leveling portion and the second leveling portion respectively and are respectively provided with a water inlet pipe head and a water outlet pipe head.

[0007] In some embodiments, the cooling channel has a plurality of bent sections, which are respectively arranged in the first flattening portion and / or the second flattening portion. The bent sections are arranged with an increased diameter relative to other sections of the cooling channel, and the plurality of bent sections are spaced apart along the width direction of the first flattening portion or the second flattening portion.

[0008] In some embodiments, two cooling channels are disposed within the copper water jacket body, and the inlet pipe head and the outlet pipe head of each cooling channel are respectively located at the first flat portion and the second flat portion.

[0009] In some embodiments, the copper water jacket body has connecting portions arranged along the length direction at both ends. The connecting portions protrude from the top surface of the copper water jacket body, and the connecting portions have several connecting holes through them along their thickness direction. The connecting holes are used for splicing multiple cast copper water jackets.

[0010] In some embodiments, the copper water jacket body has a feeding port that extends through the arched portion along the thickness direction, and the feeding port is offset from the cooling channel.

[0011] In some embodiments, the cooling channel is provided with an arc-shaped section near the feeding port, and the arc-shaped section surrounds the feeding port.

[0012] In some embodiments, the concave end face of the arched portion is provided with a plurality of spaced threaded holes, which are used for rivet connection.

[0013] In some embodiments, a plurality of the threaded hole arrays are disposed on the concave end face of the arched portion.

[0014] Compared with the prior art, the technical solution provided in the first aspect of this application has at least the following beneficial effects: The cast copper water jacket provided in this application is used in the furnace top cover of a side-blown furnace. It features a curved cooling channel within the copper water jacket body, with an enlarged diameter bend in the channel. This is combined with the arched and flat sections of the water jacket. During use, coolant is injected into the cooling channel through the inlet pipe and returned through the outlet pipe. This design achieves efficient and uniform cooling of the furnace top cover area of ​​the side-blown furnace. At the same time, the arched design increases the contact area between the cast copper water jacket and the inner area of ​​the side-blown furnace, as well as the length of the cooling channel, thereby enhancing heat exchange efficiency, better removing heat, improving the cooling effect, and protecting the furnace top cover. On the other hand, it improves the structural strength of the furnace top cover of the side-blown furnace, effectively avoiding structural deformation and cracking, and further extending the service life of the furnace top cover.

[0015] Secondly, this application also provides a side-blown furnace, the side-blown furnace including a long-life arched furnace top cover cast copper water jacket as described in any of the first aspects above.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the cast copper water jacket according to an embodiment of this application; Figure 2 This is a top view of a cast copper water jacket according to an embodiment of this application; Figure 3 This is another structural schematic diagram of a cast copper water jacket according to an embodiment of this application; Figure 4 This is a cross-sectional view of the bent section of a cast copper water jacket according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of multiple cast copper water jackets spliced ​​together according to an embodiment of this application; Figure 6 This is a side view of a cast copper water jacket according to an embodiment of this application.

[0019] Figure label: 100. Cast bronze water jacket; 200. Slag-hanging rivets; 10. Copper water jacket body; 11. Arched section; 111. Threaded hole; 12. First flat section; 13. Second flat section; 14. Cooling channel; 141. Water inlet pipe head; 142. Water outlet pipe head; 143. Bend section; 1431. Expanded diameter section; 144. Arc-shaped section; 15. Connecting section; 151. Connecting hole; 16. Feed port. Detailed Implementation

[0020] The embodiments of this application are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0021] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. "Multiple" means at least two, that is, two or more; "multiple" means at least two, that is, two or more.

[0022] In this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0025] For the traditional side-blown furnace top cover and cooling structure, the refractory material of the top cover is exposed to temperatures above 1300℃ for extended periods. Under the harsh environment of high temperature, strong heat radiation, and chemical corrosion, the internal structure of the top cover gradually deteriorates, leading to a decrease in mechanical strength and making it unable to withstand the pressure inside the furnace, resulting in structural deformation and cracking. Its lifespan is generally less than 6 months, requiring 2-3 repairs per year, with single shutdowns resulting in losses exceeding one million yuan. On the other hand, the existing cooling system of the steel shell furnace cover with refractory inlay structure has uneven cooling effects. Insufficient cooling in some areas leads to excessively high temperatures, accelerating material aging and damage; while excessive cooling in other areas results in uneven distribution of thermal stress on the top cover, further affecting its service life.

[0026] Based on this, the inventors proposed a long-life arched bridge-shaped cast copper water jacket for side-blown furnaces to effectively improve the cooling effect at the furnace top cover, reduce the temperature of the furnace top cover during pyrometallurgical processes, and thus extend its service life.

[0027] Please see Figures 1 to 6This embodiment provides a long-life arched bridge-shaped cast copper water jacket 100 for a side-blown furnace top cover. The cast copper water jacket 100 is applied to the top cover of a side-blown furnace for cooling the top cover area. Specifically, the cast copper water jacket 100 includes a copper water jacket body 10, which is provided with an arched portion 11 and flat portions at both ends of the arched portion 11. The arched portion 11 and the flat portions are integrally formed. At least one cooling channel 14 is pre-set in the water jacket body. The cooling channel 14 is arranged in the arched portion 11 and the flat portions. The cooling channel 14 is provided with an inlet pipe head 141 and an outlet pipe head 142 extending to the outside of the copper water jacket body 10 at both ends.

[0028] It should be noted that, for ease of installation and transportation of the cast copper water jacket 100, the cast copper water jacket 100 in this embodiment is the smallest unit block, that is, in actual use, such as Figure 3 As shown, the furnace top cover of the side-blown furnace is assembled from multiple cast copper water jackets 100. The arched part 11 can be arc-shaped with a radius of curvature of 16m. In actual installation, the flat part of the cast copper water jacket 100 can be used to connect and fix it to the top support structure of the two side walls of the side-blown furnace. The concave end face of the arched part 11 is completely exposed in the space area inside the side-blown furnace.

[0029] It should also be noted that, from the side view, the cooling channel 14 is located between the upper and lower surfaces of the copper water jacket body 10. At the same time, the copper water jacket body 10 can be set as a meandering serpentine structure, that is, the cooling channel 14 is filled with the arched part 11 and the flat part as much as possible, so as to ensure the uniformity and cooling effect of the cast copper water jacket 100. Meanwhile, the water inlet pipe head 141 and the water outlet pipe head 142 are located on the end face of the protrusion of the cast copper water jacket 100. That is, after the cast copper water jacket 100 is installed, the water inlet pipe head 141 and the water outlet pipe head 142 are located outside the furnace top cover, so as to connect the external pipeline to increase the cooling liquid.

[0030] For example, in actual use, the number and splicing length of the cast copper water jacket 100 can be selectively set according to actual needs. After splicing multiple cast copper water jackets 100, refractory mortar, i.e., refractory material, is tamped onto the end face of the cast copper water jacket 100 near the side-blown furnace. The use of cast copper water jackets 100 can effectively reduce refractory material consumption, lower maintenance frequency, and thus save costs in long-term operation. The combination of refractory material and copper water jacket, along with the refractory bricks, can further block heat transfer to the interior of the water jacket, reduce the thermal load erosion of the copper water jacket, and extend its service life.

[0031] In this embodiment, the cast copper water jacket 100 features a curved cooling channel 14 within the copper water jacket body 10. The cooling channel 14 is connected to an inlet pipe 141 and an outlet pipe 142 at both ends. During use, coolant is injected into the cooling channel 14 through the inlet pipe 141 and returned through the outlet pipe 142, achieving uniform and efficient cooling of the furnace top cover area of ​​the side-blown furnace. Simultaneously, the arched portion 11 increases the contact area between the cast copper water jacket 100 and the area inside the side-blown furnace, as well as the length of the cooling channel 14, thereby enhancing heat exchange efficiency, better removing heat, and improving the cooling effect. This reduces the impact of high temperatures on the furnace top cover structure. Furthermore, it improves the structural strength of the furnace top cover of the side-blown furnace, effectively preventing structural deformation and cracking, and further extending the service life of the furnace top cover.

[0032] Combination Figures 1 to 3 In some embodiments, the leveling portion includes a first leveling portion 12 and a second leveling portion 13 respectively disposed at both ends of the arched portion 11. The first leveling portion 12 and the second leveling portion 13 can be symmetrically disposed. The cooling channel 14 extends from the first leveling portion 12 through the arched portion 11 to the second leveling portion 13 within the copper water jacket body 10. At the same time, the cooling channel 14 is provided with a bending section 143 at the first leveling portion 12 and / or the second leveling portion 13. The bending section 143 is arranged in a "U" shape. Since the first leveling portion 12 and the second leveling portion 13 are located at both ends of the arched portion 11, the bending section 143 in the leveling portion ensures the continuity of the cooling channel 14, so that a single cooling channel 14 can cover a larger area within the cast copper water jacket 100, thereby improving the utilization rate of the cooling performance of the coolant while satisfying the cooling effect.

[0033] Furthermore, two cooling channels 14 can be provided inside the cast copper water jacket 100, that is, the two cooling channels 14 are S-shaped and do not intersect, and are fully covered by the arched part 11 and the flat part, thereby improving the cooling effect. At the same time, the water inlet pipe head 141 of the two cooling channels 14 can be set on the flat part on one side, and the water outlet pipe head 142 of the two cooling channels 14 can be set on the flat part on the other side, thereby facilitating the arrangement of the pipeline for transporting coolant.

[0034] Combination Figure 3 and Figure 4Furthermore, the cooling channel 14 has a plurality of the aforementioned bent sections 143, which are arranged with an increased diameter relative to other sections of the cooling channel 14. The plurality of bent sections 143 are respectively arranged in the first flat section 12 and / or the second flat section 13, and the plurality of bent sections 143 are spaced apart along the width direction of the first flat section 12 or the second flat section 13. Since the temperature of the flat section is relatively lower than that of the arched section 11, the increased diameter section 1431 is provided in the bent section 143, so that the flow rate in the bent section 143 is slowed down relative to other parts of the cooling channel 14, which adapts to the heat exchange requirements of the low temperature area to optimize the heat exchange efficiency, while making full use of the space of the flat section to achieve a compact structural layout.

[0035] Combination Figure 3 and Figure 5 In some embodiments, the copper water jacket body 10 has connecting portions 15 arranged along the length direction at both ends. The connecting portions 15 protrude from the top surface of the copper water jacket body 10, and the connecting portions 15 have several connecting holes 151 extending through them along their thickness direction. The connecting holes 151 are used for splicing multiple cast copper water jackets 100. Specifically, the connecting portions 15 are integrally formed with the arched portion 11 and the flat portion. The connecting portions 15 can extend from the flat portion at one end to the other end. Through the setting of the connecting portions 15, multiple cast copper water jackets 100 can be tightly spliced ​​together, and then further fixed by bolts.

[0036] Optional, combined Figure 2 As shown, a feeding port 16 is provided through the arched part 11 along the thickness direction of the copper water jacket body 10. The feeding port 16 is staggered from the cooling channel 14. An arc-shaped section 144 is provided in the cooling channel 14 near the feeding port 16. The arc-shaped section 144 surrounds the feeding port 16. The feeding port 16 is used to add the materials required for the smelting process to the side-blown furnace. At the same time, the part of the cooling channel 14 around the feeding port 16 is set as an arc-shaped section 144, so as to better cool the feeding port 16 and achieve a more uniform cooling effect.

[0037] It should be noted that not all cast copper water jackets 100 need to be equipped with charging ports 16. When building the furnace top cover of the side-blown furnace, only two cast copper water jackets 100 with charging ports 16 may be used, while the water jackets on both sides of the cast copper water jacket 100 with charging ports 16 may not be equipped with charging ports 16.

[0038] Please see Figure 6In some embodiments, the concave end face of the arched portion 11 is provided with a plurality of spaced threaded holes 111. These threaded holes 111 do not penetrate the entire cast copper water jacket 100. The plurality of threaded holes 111 are arrayed on the concave end face of the arched portion 11. The threaded holes 111 are used for rivet connections, resulting in the concave end face of the arched portion 11 being covered with slag-hanging rivets 200. These slag-hanging rivets 200 can be claw-shaped. Since the inner end face of the arched portion 11 needs to be tamped with refractory mortar, the slag-hanging rivets 200 strengthen the refractory material and make the connection between the refractory material and the cast copper water jacket 100 more stable, preventing the refractory material from falling off. Furthermore, the refractory material further blocks heat transfer into the cast copper water jacket 100, reducing the thermal load on the copper water jacket and extending its service life. Of course, the connection strength between the refractory bricks and the copper water jacket can also be enhanced by welding zinc alloy blocks into the refractory brick insert grooves, thus preventing the refractory bricks from falling off.

[0039] Optionally, temperature sensors can be installed at key locations on the cast copper water jacket 100 at the furnace top to monitor its operating temperature in real time, allowing for timely understanding of the heating status of the furnace top cover. When the temperature exceeds the set alarm value, timely measures can be taken, such as adjusting the cooling water flow rate or reducing the furnace internal temperature, to prevent damage to the copper water jacket due to excessive heat. Regular inspections of the cast copper water jacket 100 should be conducted to observe surface wear and corrosion, promptly identifying potential problems and ensuring the safe operation of the side-blown furnace.

[0040] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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 the utility model.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0042] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. 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.

[0043] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A cast copper water jacket for a long-life arched bridge-shaped furnace top cover of a side-blown furnace, characterized in that, The cast copper water jacket includes a copper water jacket body, the copper water jacket body is provided with an arched part and flat parts provided at both ends of the arched part, the arched part and the flat parts are integrally formed, and at least one cooling channel is provided in the copper water jacket body, wherein the cooling channel is an irregularly shaped cooling channel, the outer rectangle of the cooling channel covers the arched part and the flat parts, and the cooling channel includes at least one bent section located in the flat part.

2. The cast copper water jacket for the long-life arched bridge-shaped furnace top cover of the side-blown furnace according to claim 1, characterized in that, The leveling section includes a first leveling section and a second leveling section respectively disposed at both ends of the arched section. The cooling channel extends to the first leveling section and the second leveling section respectively and is provided with a water inlet pipe head and a water outlet pipe head respectively.

3. The cast copper water jacket for the long-life arched bridge-shaped furnace top cover of the side-blown furnace according to claim 2, characterized in that, The cooling channel has a plurality of bent sections, which are arranged with an increased diameter relative to other sections of the cooling channel. The plurality of bent sections are respectively arranged in the first flat section and / or the second flat section, and the plurality of bent sections are spaced apart along the width direction of the first flat section or the second flat section.

4. The cast copper water jacket for the long-life arched bridge-shaped furnace top cover of the side-blown furnace according to claim 2, characterized in that, Two cooling channels are disposed within the copper water jacket body, and the inlet pipe head and the outlet pipe head of each cooling channel are respectively located at the first flat part and the second flat part.

5. The cast copper water jacket for the long-life arched bridge-shaped furnace top cover of the side-blown furnace according to claim 1, characterized in that, The copper water jacket body has connecting parts arranged along its length at both ends. The connecting parts protrude from the top surface of the copper water jacket body and have several connecting holes through them along their thickness direction. The connecting holes are used for splicing multiple cast copper water jackets.

6. The cast copper water jacket for the long-life arched bridge-shaped furnace top cover of the side-blown furnace according to claim 1, characterized in that, The copper water jacket body has a feeding port that extends through the arched part along the thickness direction, and the feeding port is staggered from the cooling channel.

7. The cast copper water jacket for the long-life arched bridge-shaped furnace top cover of the side-blown furnace according to claim 6, characterized in that, The cooling channel has an arc-shaped section near the feeding port, and the arc-shaped section surrounds the feeding port.

8. The cast copper water jacket for the long-life arched bridge-shaped furnace top cover of the side-blown furnace according to claim 1, characterized in that, The concave end face of the arched part is provided with a plurality of threaded holes spaced apart, which are used for rivet connection.

9. The cast copper water jacket for the long-life arched bridge-shaped furnace top cover of the side-blown furnace according to claim 8, characterized in that, The array of multiple threaded holes is disposed on the concave end face of the arched portion.

10. A side-blown furnace, characterized in that, The side-blown furnace includes a long-life arched furnace top cover with cast copper water jacket as described in any one of claims 1-9.

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