Side-blown converter and smelting equipment
By setting adjustment components and baffles on the outside of the side-blown furnace, flexible adjustment of the product layer and slag layer height can be achieved, solving the problem that the existing side-blown furnace cannot adjust the melt level, and improving production flexibility and safety.
Patent Information
- Application Number
- CN202422897360.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing side-blown furnaces are unable to flexibly adjust the melt level in the furnace, resulting in insufficient production flexibility when processing different raw materials.
By arranging the first and second adjusting components on the outside of the side-blown furnace, the heights of the product layer and slag layer at the product discharge port and the slag discharge port are adjusted respectively, and combined with the lifting drive and baffle, flexible adjustment of the melt level in the furnace is achieved.
The production flexibility of the side-blown furnace is enhanced, which can adapt to the needs of different raw material processing volumes, reduce safety risks in emergency situations, and improve production continuity and product separation effects.
Smart Images
Figure CN223448920U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of metal smelting, and particularly relates to a side-blown furnace and a smelting device. BACKGROUND
[0002] The side-blown smelting process is a current mainstream smelting process and is widely applied to the field of non-ferrous metal pyrometallurgy, such as copper smelting. The existing side-blown smelting process usually provides a side-blown furnace, and the structure of the side-blown furnace is fixed after being built. In actual production, the height of the molten liquid in the furnace may need to be adjusted according to the raw material, but the existing side-blown furnace cannot flexibly adjust the height of the molten liquid in the furnace. CONTENT OF THE UTILITY MODEL
[0003] The technical problem to be solved by the application is that the existing side-blown furnace cannot flexibly adjust the height of the molten liquid in the furnace. To solve the technical problem, a side-blown furnace and a smelting device capable of flexibly adjusting the height of the molten liquid in the furnace are provided.
[0004] The technical scheme provided by the application is as follows:
[0005] A side-blown furnace comprises:
[0006] a furnace body having a furnace cavity, a product discharge port and a slag discharge port which are in communication with the furnace cavity;
[0007] a first adjusting assembly arranged outside the furnace body and corresponding to the product discharge port to adjust the height of a product layer at the product discharge port;
[0008] a second adjusting assembly arranged outside the furnace body and corresponding to the slag discharge port to adjust the height of a slag layer at the slag discharge port.
[0009] The side-blown furnace provided above adjusts the height of the slag layer at the slag discharge port through the second adjusting assembly, thereby adjusting the height of the molten liquid in the furnace cavity, so that the side-blown furnace is suitable for different raw material processing amounts. Meanwhile, the height of the product layer at the product discharge port is adjusted by the first adjusting assembly, so that the amount of the product in the furnace can be flexibly adjusted, and the production flexibility is increased.
[0010] Further, the first adjusting assembly and the second adjusting assembly each comprise a lifting driving member and a baffle, the lifting driving member is arranged outside the furnace body and connected with the baffle to drive the baffle to lift, and the baffle can shield the product discharge port or the slag discharge port during lifting to adjust the height of the product layer or the height of the slag layer.
[0011] Further, the first adjusting assembly and the second adjusting assembly each further comprise a connecting shell connected to the furnace body and corresponding to the product discharge port or the slag discharge port, and the baffle is arranged in the connecting shell in a liftable manner.
[0012] Further, the connecting shell has a connecting cavity and a discharge port in communication with the connecting cavity, the connecting cavity is in communication with the product discharge port or the slag discharge port, and the discharge port is located at a side of the connecting shell away from the furnace body, and the baffle can shield the discharge port during lifting.
[0013] Further, an inner wall of the connecting cavity is covered with a refractory layer.
[0014] Further, the baffle is a steel plate.
[0015] Further, the product discharge port and the slag discharge port are respectively located at opposite ends of the furnace body.
[0016] Further, the furnace body is further provided with a product discharge channel, one end of the product discharge channel is in communication with the product discharge port, the other end of the product discharge channel extends to the bottom of the furnace cavity and is in communication with the furnace cavity.
[0017] Further, the side-blown furnace further comprises a main flue and a flue gas discharge assembly, the main flue is arranged at the top of the furnace body and is in communication with the furnace cavity, the main flue is provided with a first flue gas discharge port and a second flue gas discharge port, and the flue gas discharge assembly is arranged in the main flue and can control the first flue gas discharge port and the second flue gas discharge port to be opened and closed.
[0018] A smelting equipment comprises the side-blown furnace as described above. BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the embodiments of the present application, and are used to explain the present application, and do not constitute a limitation on the present application.
[0020] Figure 1 A structure schematic view of the side-blown furnace provided by an embodiment of the present application is shown in the figure;
[0021] Figure 2 For Figure 1 A structure schematic view of the adjusting assembly in the side-blown furnace shown in the figure.
[0022] Label explanation:
[0023] 110. Furnace body; 111. Furnace cavity; 112. Product discharge port; 113. Slag discharge port; 114. Product discharge channel; 115. Feeding port; 116. Air supply port; 121. First adjustment component; 122. Second adjustment component; 123. Baffle; 124. Connecting shell; 125. Connecting cavity; 126. Discharge port; 130. Main flue; 131. First smoke exhaust port; 132. Second smoke exhaust port. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0025] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.
[0026] On the one hand, the present application provides a side-blown furnace, which can adjust the liquid level of the melt in the furnace.
[0027] like Figure 1 As shown, the side-blown furnace includes a furnace body 110, a first regulating assembly 121, and a second regulating assembly 122. The furnace body 110 has a furnace chamber 111 and a product discharge port 112 and a slag discharge port 113 connected to the furnace chamber 111. The first regulating assembly 121 and the second regulating assembly 122 are both arranged outside the furnace body 110, and the first regulating assembly 121 corresponds to the product discharge port 112 to adjust the height of the product layer at the product discharge port 112, and the second regulating assembly 122 corresponds to the slag discharge port 113 to adjust the height of the slag layer at the slag discharge port 113.
[0028] The side-blown furnace described above adjusts the slag layer height at the slag discharge port 113 via the second adjustment assembly 122, thereby adjusting the liquid level of the melt in the furnace chamber 111, allowing the side-blown furnace to adapt to different raw material processing capacities. Simultaneously, by coordinating the first adjustment assembly 121 to adjust the product layer height at the product discharge port 112, the amount of product in the furnace can be flexibly adjusted, thereby increasing production flexibility.
[0029] In order to facilitate the understanding of the technical solutions of the present application, the advantages of the side-blown furnace in the above-mentioned embodiments compared with the existing smelting furnace are described by taking copper smelting as an example.
[0030] 1. When an emergency or abnormal situation occurs and the melt in the furnace cavity 111 needs to be discharged, the height of the product layer and the slag layer can be lowered through the first adjusting assembly 121 and the second adjusting assembly 122 to discharge the melt in the furnace cavity 111 as much as possible, reduce the static pressure borne by the furnace body 110, and reduce the probability of safety accidents;
[0031] 2. When the copper content in the slag is relatively high at a certain time period, the height of the slag layer can be increased to prolong the residence time of the slag in the furnace, thereby increasing the time for clarification and separation of the two, reducing the copper content in the slag, and improving the direct recovery rate. At the same time, in order to further increase the separation effect of the slag and the product, the height of the product layer can be lowered;
[0032] 3. When the downstream process of the side-blown furnace cannot be fed due to an abnormality, the height of the product layer can be increased to increase the storage amount of the product in the furnace cavity 111, thereby ensuring the continuity of production.
[0033] It should be noted that when multiple situations exist at the same time, the height of the product layer and the slag layer can be increased or decreased at the same time, or the height of one of the product layer and the slag layer can be increased and the height of the other can be decreased. The height can be flexibly set according to the actual situation to meet more production requirements.
[0034] In an embodiment, the product discharge port 112 and the slag discharge port 113 are respectively located at opposite ends of the furnace body 110, thereby facilitating the arrangement of devices for processing the product and the slag.
[0035] In an embodiment, the furnace body 110 is also provided with a product discharge channel 114, one end of the product discharge channel 114 is in communication with the product discharge port 112, the other end extends to the bottom of the furnace cavity 111 and is in communication with the furnace cavity 111. The product in the furnace cavity 111 is located at the bottom of the furnace cavity 111 and is discharged through the product discharge channel 114 and the product discharge port 112. In the embodiment shown in the figure, Figure 1 The height of the end of the product discharge channel 114 in communication with the product discharge port 112 is higher than the height of the other end, that is, the product is discharged from the product discharge channel 114 and the product discharge port 112 by siphoning. Similarly, it can be known that in some cases, for example, after the melt liquid level is lower than the height of the slag discharge port 113, the liquid level of the melt can be controlled through the first adjusting assembly 121.
[0036] In one embodiment, the furnace body 110 is further provided with a charging port 115 and an air supply port 116 which are in communication with the furnace cavity 111. The charging port 115 is located at the top of the furnace body 110, and the air supply port 116 is located at the side of the furnace body 110. The air supply port 116 is divided into a primary air supply port 116 and a secondary air supply port 116, and the primary air supply port 116 is located below the secondary air supply port 116.
[0037] In one embodiment, the side-blown furnace further comprises a main flue 130 which is arranged at the top of the furnace body 110 and is in communication with the furnace cavity 111 for discharging flue gas in the furnace cavity 111. Further, the main flue 130 is provided with a first flue gas discharge port 131 and a second flue gas discharge port 132. The side-blown furnace further comprises a flue gas discharge assembly which is arranged in the main flue 130 and can control the opening and closing of the first flue gas discharge port 131 and the second flue gas discharge port 132, respectively.
[0038] In this way, during normal production, the flue gas discharge assembly can control the opening of the first flue gas discharge port 131 and the closing of the second flue gas discharge port 132, and the flue gas is discharged to downstream devices such as a waste heat boiler through the first flue gas discharge port 131. When oxygen and material need to be stopped due to a fault, the flue gas discharge assembly controls the closing of the first flue gas discharge port 131 and the opening of the second flue gas discharge port 132, and at the same time, the heat preservation spray gun is used to heat and preserve the melt in the furnace cavity 111. The flue gas generated by heat preservation is discharged to the downstream flue gas treatment device through the second flue gas discharge port 132, and then the furnace is emptied.
[0039] It should be explained that when the side-blown furnace stops oxygen and material, the temperature of the melt in the furnace body 110 should not be reduced too much to ensure that the freezing degree of the melt after the fault is handled meets the requirements of re-air supply and material feeding, and to avoid the situation of dead furnace. Therefore, the melt is heated and preserved by the heat preservation spray gun. At the same time, compared with the flue gas during normal production, the amount of flue gas generated during heating and preservation is relatively small. If the flue gas is transported to the waste heat boiler and the electric dust collector, the temperature of the flue gas will decrease too much, which will cause the waste heat boiler and the electric dust collector to be prone to dew corrosion, affecting their service life. Therefore, the flue gas generated by heating and preservation is discharged to the flue gas treatment device through the second flue gas discharge port 132.
[0040] It should be noted that the first flue gas discharge port 131 and the second flue gas discharge port 132 can be located on the same side or different sides of the main flue 130. In a preferred embodiment, the first flue gas discharge port 131 is located at the side of the main flue 130, and the second flue gas discharge port 132 is located at the top of the main flue 130. In this embodiment, the flue gas discharge assembly comprises a driving member, a gate plate and a cover plate. The driving member is connected with the gate plate to drive the gate plate to move relative to the main flue 130, and the gate plate can open and close the first flue gas discharge port 131 during movement. The cover plate is arranged at the top of the main flue 130, and the cover plate can cover the second flue gas discharge port 132 to close the second flue gas discharge port 132.
[0041] Please participate Figure 2 In one embodiment, the first adjusting assembly 121 and the second adjusting assembly 122 each include a lifting drive arranged outside the furnace body 110 and connected with the baffle 123 to drive the baffle 123 to lift and lower, and the baffle 123 can shield the product discharge port 112 or the slag discharge port 113 during lifting and lowering, so as to adjust the height of the product layer or the slag layer at the discharge port, and further adjust the height of the product layer or the slag layer in the furnace cavity 111.
[0042] It can be determined that the baffle 123 can shield the discharge port during lifting and lowering, and adjust the height of the product layer or the slag layer at the discharge port, which indicates that the product or the slag is discharged by overflow through the upper edge of the baffle 123, i.e. the height of the product layer or the slag layer is raised during the lifting of the baffle 123, and the height of the product layer or the slag layer is lowered during the lowering of the baffle 123. It can also be understood that in this embodiment, the baffle 123 is attached to the outer surface of the furnace body 110, and the sealing property can be improved by arranging refractory sealing material to prevent the molten material or the slag from falling from the gap between the baffle 123 and the furnace body 110.
[0043] Optionally, the lifting drive drives the baffle 123 to lift and lower in the manner of hydraulic pressure, hoist, gear or chain, and the baffle 123 is a steel plate.
[0044] In one embodiment, the first adjusting assembly 121 and the second adjusting assembly 122 each further include a connecting shell 124 connected to the furnace body 110 and corresponding to the product discharge port 112 or the slag discharge port 113, and the baffle 123 is arranged to lift and lower in the connecting shell 124. Further, the connecting shell 124 has a connecting cavity 125 and a discharge port 126 communicating with the connecting cavity 125, the connecting cavity 125 communicates with the product discharge port 112 or the slag discharge port 113, and the discharge port 126 is located at the side of the connecting shell 124 away from the furnace body 110; the baffle 123 can shield the discharge port 126 during lifting and lowering to adjust the height of the product layer or the slag layer discharged through the discharge port 126.
[0045] It can be understood that the product or the slag flowing into the connecting cavity 125 is discharged from the discharge port 126 by overflow, and the baffle 123 can shield the discharge port 126 during lifting to raise the height of the product layer or the slag layer, and vice versa to lower the height of the product layer or the slag layer.
[0046] It should be noted that in the embodiment, the connecting shell 124 is connected with the furnace body 110, and the baffle 123 is arranged on the connecting shell 124. Compared with the above-mentioned direct abutment of the baffle 123 with the furnace body 110, both need to be in sealing contact with the furnace body 110, but since the baffle 123 is lifted relative to the furnace body 110, and the connecting shell 124 is stationary relative to the furnace body 110, in the case of fixed structure of the furnace body 110, the arrangement of the baffle 123 directly contacting with the furnace body 110 is more difficult, and the risk of product and slag falling from the gap is greater. In addition, the connecting shell 124 and the baffle 123 are both made of steel, and can be made later, which is more convenient to manufacture while ensuring the sealing between the two. Of course, in other embodiments, the connecting shell 124 can also be used as a structure for realizing the reciprocating movement of the baffle 123 along the vertical direction, such as a guide rail, at this time the baffle 123 is still directly abutted with the furnace body 110.
[0047] In one embodiment, the inner wall of the connecting cavity 125 is covered with a refractory layer to improve the high temperature resistance and prolong the service life of the adjusting assembly. Optionally, the refractory layer can be a refractory material directly covered on the inner wall of the connecting cavity 125, or a water jacket arranged on the inner wall of the connecting cavity 125.
[0048] In summary, the side-blown furnace provided by the present application has at least the following advantages:
[0049] 1. The product layer and the slag layer height can be adjusted respectively through the first adjusting assembly 121 and the second adjusting assembly 122, so that more production requirements can be met and production flexibility is increased;
[0050] 2. The main flue 130 is provided with the first smoke outlet 131 and the second smoke outlet 132, and the opening and closing of the two are controlled by the smoke discharge assembly. The first smoke outlet 131 is opened during normal production, and when oxygen and material stop due to failure, the molten material in the furnace cavity 111 can be heated and kept warm by the heat preservation lance, and the flue gas is discharged through the second smoke outlet 132, which ensures that the freezing degree of the molten material meets the air blowing and material opening requirements, avoids damage to devices such as waste heat boilers and electric dust collectors, and improves the reliability of the equipment.
[0051] On the other hand, based on the side-blown furnace in the above-mentioned embodiment, the present application also provides a smelting equipment, which comprises the side-blown furnace in the above-mentioned embodiment.
[0052] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A side-blown furnace, characterized in that: include: a furnace body comprising a furnace cavity and a product discharge port and a slag discharge port communicated with the furnace cavity; a first regulating assembly, disposed on the outside of the furnace body and corresponding to the product discharge port, for regulating the height of the product layer at the product discharge port; The second adjusting component is arranged on the outside of the furnace body and corresponds to the slag discharge port to adjust the height of the slag layer at the slag discharge port.
2. The side-blown furnace according to claim 1, characterized in that: The first adjustment assembly and the second adjustment assembly both include a lifting drive and a baffle. The lifting drive is arranged on the outside of the furnace body and is connected to the baffle to drive the baffle to rise and fall. During the lifting process of the baffle, the product discharge port or the slag discharge port can be blocked to adjust the height of the product layer or the slag layer.
3. The side-blown furnace according to claim 2, characterized in that: The first regulating assembly and the second regulating assembly each further include a connecting shell, which is connected to the furnace body and corresponds to the product discharge port or the slag discharge port, and the baffle is liftably disposed on the connecting shell.
4. The side-blown furnace according to claim 3, characterized in that: The connecting shell has a connecting cavity and a discharge port connected to the connecting cavity. The connecting cavity is connected to the product discharge port or the slag discharge port. The discharge port is located on the side of the connecting shell away from the furnace body. The baffle can block the discharge port during the lifting process.
5. The side-blown furnace according to claim 4, characterized in that: The inner wall of the connecting cavity is covered with a fire-resistant layer.
6. The side-blown furnace according to claim 2, characterized in that: The baffle is a steel plate.
7. The side-blown furnace according to claim 1, characterized in that: The product discharge port and the slag discharge port are respectively located at two opposite ends of the furnace body.
8. The side-blown furnace according to claim 1, characterized in that: The furnace body is further provided with a product discharge channel, one end of which is communicated with the product discharge port, and the other end of which extends to the bottom of the furnace cavity and is communicated with the furnace cavity.
9. The side-blown furnace according to claim 1, characterized in that: The side-blown furnace also includes a main flue and a flue gas exhaust component. The main flue is arranged at the top of the furnace body and is connected to the furnace cavity. The main flue is provided with a first smoke exhaust port and a second smoke exhaust port. The flue gas exhaust component is arranged in the main flue and can control the opening and closing of the first smoke exhaust port and the second smoke exhaust port.
10. A smelting equipment, characterized in that: The side-blown furnace comprises the side-blown furnace described in any one of claims 1 to 9.