Production recovery method of top-blown furnace, storage medium and electronic equipment
By discharging half of the melt and holding it at a constant temperature, and then using flammable blockages to open the outlet, the problem of inefficient restarting of top-blown furnaces due to melt solidification was solved, thereby improving production efficiency and reducing equipment wear and carbon emissions.
Patent Information
- Application Number
- CN202410964607.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2026-01-20
AI Technical Summary
When the top-blown furnace stops heating unexpectedly, the melt cools and solidifies to form a solid furnace bottom, resulting in low efficiency of restarting production after shutdown and requiring additional furnace bottom melting operations, which affects production efficiency.
After the top-blown furnace has been shut down for a certain period of time, half of the melt is discharged and kept at a constant temperature. The outlet is blocked with flammable plugs. When heating is resumed, the flammable plugs are burned to open the outlet and production is restored.
This avoids the need for furnace bottom melting, shortens production recovery time, improves production efficiency, reduces equipment wear and carbon emissions, and saves on natural gas consumption.
Smart Images
Figure CN121363874A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of metal smelting, and in particular to a top-blown furnace production resuming method, a storage medium and an electronic device. BACKGROUND
[0002] The top-blown furnace is widely used in industrial production due to its simple furnace body structure, high operation flexibility and strong adaptability to complex material processing, especially in smelting processing. For example, the top-blown furnace can be used to smelt copper concentrate material, and through heat supply, the material is smelted to produce copper matte. If the top-blown furnace stops supplying heat unexpectedly, it is necessary to wait for re-heating to resume production.
[0003] In actual operation, the bottom of the top-blown furnace is prone to form residual melt. The residual melt cooled by nature will gradually cool and solidify. Once a solid-state furnace bottom is formed in the furnace, after the furnace is stopped and production is resumed, additional furnace bottom melting operation is required to process the solid-state furnace bottom, and then production can be resumed, which is low in efficiency. SUMMARY
[0004] The present application aims to at least partially solve one of the technical problems in the related art. To this end, one object of the present application is to provide a top-blown furnace production resuming method, a storage medium and an electronic device to improve the production resuming efficiency of the top-blown furnace.
[0005] According to a first aspect of an embodiment of the present application, a top-blown furnace production resuming method is provided, and the method comprises:
[0006] If the stop time of the top-blown furnace exceeds a first time threshold and does not exceed a second time threshold, half of the melt in the top-blown furnace is discharged, and natural gas is supplied to the top-blown furnace for heat preservation; wherein the first time threshold is less than the second time threshold;
[0007] The output port of the top-blown furnace is blocked by a flammable blockage;
[0008] In response to the re-heating of the top-blown furnace, oxygen is input into the top-blown furnace to burn the flammable blockage of the output port, so that the output port is opened;
[0009] Material is fed into the top-blown furnace, so that the top-blown furnace resumes production, and the melt is output outside through the output port.
[0010] According to a second aspect of an embodiment of the present application, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed by a processor, the top-blown furnace production resuming method described above is implemented.
[0011] According to a third aspect of the embodiments of the present application, an electronic device is provided, comprising a memory and a processor, wherein the memory stores a computer program, and the computer program is executed by the processor to implement the method for recovering production of a top-blown converter.
[0012] In the scheme provided by the embodiments of the present application, half of the melt in the top-blown converter is discharged, half of the melt is reserved, and the reserved melt is kept warm, which prevents the residual melt at the bottom of the top-blown converter from solidifying and avoids the formation of a solid bottom, so that the step of melting the bottom is not needed, thereby saving the operation process and improving the efficiency of recovering production. The early recovery of production of the top-blown converter is also conducive to improving the yield and economic benefits.
[0013] Discharging half of the melt can shorten the discharge time by half and reduce the wear and loss of the press plate and the chute caused by the high-temperature melt, thereby increasing the maintenance and replacement cost of the equipment.
[0014] In addition, the use of the combustible blocking object to block the opening of the inner weir can enhance the heat preservation effect of the converter body and prevent the residual melt at the bottom of the top-blown converter from solidifying. The combustion of the combustible blocking object releases heat, which can improve the efficiency of opening the inner weir and further accelerate the recovery of production and improve the efficiency.
[0015] The scheme of discharging half of the melt, i.e., the half-melt pool discharge, reduces the process of creating a melt pool compared to discharging all the melt when the top-blown converter is stopped. The process of creating a melt pool is the operation of generating melt in the converter because the melt in the converter has been completely discharged, so as to provide reaction conditions for subsequent charging. However, the embodiments of the present application reserve the previous melt, so the reaction conditions are also reserved, and the process of creating a melt pool is not needed, which further improves the efficiency of recovering production and saves the consumption of natural gas in the process of creating a melt pool and reduces carbon emissions.
[0016] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a flowchart of a method for recovering production of a top-blown converter provided by the embodiments of the present application;
[0018] Figure 2 is a structural schematic diagram of a top-blown converter provided by the embodiments of the present application;
[0019] Figure 3 is a structural schematic diagram of an electronic device provided by the embodiments of the present application. DETAILED DESCRIPTION
[0020] Embodiments of the present application are described below in detail with reference to examples shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.
[0021] A top-blown furnace production resuming method, a storage medium and an electronic device of an embodiment of the present application are described below with reference to the drawings.
[0022] In one embodiment of the present application, referring to Figure 1 , a top-blown furnace production resuming method is provided, referring to S101-S104.
[0023] S101: If the shutdown duration of the top-blown furnace exceeds a first duration threshold and does not exceed a second duration threshold, after discharging half of the melt in the top-blown furnace, natural gas is delivered to the top-blown furnace for heat preservation.
[0024] The first duration threshold is less than the second duration threshold.
[0025] S102: A combustible blockage is used to block the output port of the top-blown furnace.
[0026] S103: In response to the top-blown furnace being reheated, oxygen is input to the top-blown furnace to burn the combustible blockage of the output port, so that the output port is opened.
[0027] S104: Material is fed into the top-blown furnace, so that the top-blown furnace resumes production, and the melt is output outside through the output port.
[0028] The shutdown duration is the length of time from the shutdown of the top-blown furnace to the reheating.
[0029] The first duration threshold and the second duration threshold can be manually set according to the cooling condition of the melt. For example, the first duration threshold can be set to 10 hours, and the second duration threshold can be set to 30 hours; or the first duration threshold can be set to 9.5 hours, and the second duration threshold can be set to 29.5 hours, etc.
[0030] The melt is a product generated in the top-blown furnace after the material fed into the top-blown furnace is smelted. For example, in the case where the feeding process includes delivering copper concentrate, quartz sand, coal and oxygen-enriched air into the furnace, the melt including copper matte and slag is generated from the copper concentrate through high-temperature reaction.
[0031] In one embodiment of the present application, the combustible blockage is yellow mud mixed with coal. The particles of coal are smaller than those of charcoal and other combustible materials, and can produce better combustion effect.
[0032] In other embodiments, charcoal may be used as a flammable material instead of coal, or other types of soil may be used instead of yellow mud. The embodiments of the present invention are not limited to this.
[0033] like Figure 2 The top-blown furnace shown has a weir, which is the output outlet of the furnace. It includes an inner weir, an inner weir channel, and an outer weir. The inner weir channel refers to the passage between the inner and outer weirs. The molten metal is output from the inner weir, flowing outwards along the direction of the inner weir, inner weir channel, and outer weir. The channel can be made of copper troughs, containing circulating cooling water to protect the copper troughs.
[0034] Figure 2 In the middle, the feeding port is used to feed materials into the top-blown furnace, and the spray gun port is used to supply air, which can be natural gas, oxygen, etc. into the furnace.
[0035] With reheating and feeding into the top-blown furnace, the furnace can resume production, meaning the process of high-temperature reaction to generate melt can restart.
[0036] In the solution provided by this invention, half of the melt in the top-blown furnace is discharged, while the other half is retained and kept warm to prevent the melt remaining at the bottom of the furnace from solidifying and forming a solid furnace bottom. This eliminates the need for the furnace bottom melting operation, thereby saving operational steps and improving the efficiency of production recovery. Early resumption of production in the top-blown furnace also helps to increase output and economic benefits.
[0037] Discharging only half of the melt can shorten the discharge time by half and reduce the wear and loss caused by the high-temperature melt to the pressure plate and chute, thus reducing the maintenance and replacement costs of the equipment.
[0038] Furthermore, using flammable plugs can enhance the furnace insulation effect and prevent the solidification of molten material remaining at the bottom of the top-blown furnace. The heat released during combustion of the flammable plugs can improve the efficiency of opening the inner weir, further accelerating the resumption of feeding and production, and improving efficiency.
[0039] The aforementioned scheme of removing half of the molten material, i.e., half-molten pool discharge, reduces the process of creating a molten pool compared to discharging all the molten material when the top-blown furnace is shut down. Molten pool creation refers to the process of generating molten material within the furnace after all the molten material has been discharged, in order to provide reaction conditions for subsequent feed. However, this embodiment of the invention retains the previous molten material, thus preserving the reaction conditions, eliminating the need for molten pool creation. This further improves production recovery efficiency, saves natural gas consumption associated with molten pool creation, and reduces carbon emissions.
[0040] In one embodiment of the present invention, oxygen can be introduced into the top-blown furnace in the following manner: an oxygen-burning tube with an inner diameter of 6 mm and a wall thickness of 2 mm is ignited to generate oxygen, and the generated oxygen is introduced into the top-blown furnace.
[0041] Alternatively, other types of pipes or lances can be used to input oxygen, and the embodiments of the present application are not limited in this respect.
[0042] In one embodiment of the present application, after discharging half of the melt in the top-blown converter, natural gas can be fed into the top-blown converter to maintain the temperature.
[0043] After discharging half of the melt in the top-blown converter, the amount of the remaining melt is adjusted based on the height of the outlet, and natural gas is fed into the converter through a lance to maintain the temperature; wherein the flow rate of the natural gas is 1000-1200 Nm 3 / h.
[0044] The remaining melt refers to the melt remaining in the top-blown converter after discharging. When adjusting the amount of the remaining melt based on the height of the outlet, the liquid level of the melt can be adjusted based on the height of the outlet, and specifically, the liquid level of the melt can be adjusted to the lower eaves of the weir, and in this process, the part of the melt with a liquid level higher than the outlet is discharged, for example, in the case that the liquid level of the melt in the normal production converter is close to 2.5 m, the liquid level of 1-1.2 m is reserved.
[0045] The remaining melt can retain part of the heat of high-temperature reaction after discharging, which delays the temperature drop of the lining of the top-blown converter, prevents the collapse of the furnace brick, and protects the lining and prolongs the service life of the lining.
[0046] In one embodiment of the present application, if the shutdown duration does not exceed the first duration threshold, natural gas is fed into the converter to maintain the temperature until the top-blown converter is re-heated.
[0047] The shutdown duration not exceeding the first duration threshold indicates that the shutdown time is short, shorter than the time required for the remaining melt to solidify, and therefore, only the heat preservation mode is used before the melt solidifies, which avoids the rapid solidification and enables the production to be resumed.
[0048] The natural gas can be fed through a lance or a pipe, etc.
[0049] In one embodiment of the present application, if the shutdown duration exceeds the second duration threshold, all dischargeable melt in the top-blown converter is discharged, and natural gas is fed into the top-blown converter to melt the solidified melt at the bottom of the top-blown converter; new melt is generated in the top-blown converter to enable the top-blown converter to resume production.
[0050] The dischargeable melt refers to all the melt except for the bottom residual melt that cannot be completely discharged due to actual operation reasons during the discharging process. The solidified melt refers to the solid material formed after the melt is cooled.
[0051] The furnace shutdown duration exceeding the second duration threshold indicates that the furnace shutdown time is too long, and the molten pool needs to be emptied. In this case, the discharge takes the above-mentioned steps to discharge half of the molten body, and the remaining molten body in the furnace still has enough time to naturally cool, solidify, and transport natural gas for heat preservation, which only has a heat preservation effect on the molten surface and the shallow position below the molten surface. The bottom and the deep position do not absorb heat, and the molten pool surface in the furnace is insufficient to carry out feeding production. The furnace needs to maintain sufficient molten pool to meet the melting and reaction space after feeding.
[0052] In addition, after the furnace is started and the material is fed, the molten body in the furnace cannot be normally discharged, and the inner weir needs to be burned with oxygen, which increases the workload and has a huge safety hazard. Therefore, in this case, the entire dischargeable molten body is selected to be discharged.
[0053] In an embodiment of the present application, natural gas and slag can be transported into the top-blown furnace to generate a new molten body.
[0054] The slag can be a product generated in a previous smelting process, in which there is material for high-temperature reaction, which can be used for reaction with new feeding.
[0055] In an embodiment of the present application, a computer readable storage medium is provided, and a computer program is stored on the computer readable storage medium. When the computer program is executed by a processor, the top-blown furnace production recovery method described in any one of the above embodiments is implemented.
[0056] In an embodiment of the present application, an electronic device is provided, which includes a memory and a processor. The memory stores a computer program, and when the computer program is executed by the processor, the top-blown furnace production recovery method described in any one of the above embodiments is implemented.
[0057] Figure 3 is a structural block diagram of the electronic device of the embodiment of the present application.
[0058] As shown in Figure 3 , the electronic device 300 includes a processor 301 and a memory 303. The processor 301 and the memory 303 are connected, such as through a bus 302. Optionally, the electronic device 300 can also include a transceiver 304. It should be noted that in actual application, the transceiver 304 is not limited to one, and the structure of the electronic device 300 does not constitute a limitation on the embodiments of the present application.
[0059] The processor 301 can be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the present disclosure. The processor 301 can also be a combination of computing functions, such as one or more microprocessor combinations, combinations of DSP and microprocessor, etc.
[0060] The bus 302 can include a path for transmitting information between the above-mentioned components. The bus 302 can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus 302 can be divided into an address bus, a data bus, a control bus, etc. For convenience of representation, Figure 3 Only one thick line is used in the middle, but it does not mean that there is only one bus or one type of bus.
[0061] The memory 303 is used to store a computer program corresponding to the top-blown converter recovery production method of the above-mentioned embodiments of the present application, which is controlled and executed by the processor 301. The processor 301 is used to execute the computer program stored in the memory 303 to realize the content shown in the above-mentioned method embodiments.
[0062] Among them, the electronic device 300 includes but is not limited to: mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Tablet PCs), PMPs (Portable Multimedia Players), vehicle terminals (such as vehicle navigation terminals), etc. and fixed terminals such as digital TVs, desktop computers, etc. Figure 3 The electronic device 300 shown is only an example, and should not bring any limitation to the function and use range of the embodiments of the present application.
[0063] It is to be appreciated that the above description and the examples that follow are intended to be illustrative only and that changes can be made to the description, either functionally or chronologically, as well as changes being made concerning which elements of the description and / or examples are employed per se, all without departing from the spirit and scope of the application. It should be further appreciated that the logic and / or steps represented in the flow diagrams and / or otherwise described herein, for example, can be considered as a sequence of executable instructions executed by a logic processor, such as a processing system, including a processor, or other logic processor-based system, or in conjunction with such an instruction execution system. In this regard, the "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer readable medium can comprise any one of the following: an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer readable medium include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example via optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
[0064] It should be understood that aspects of the application can be implemented in hardware, software, firmware or combinations thereof. In the above embodiments, various steps or methods can be implemented in software or firmware that is stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any of the following technologies, or combinations thereof, can be used with the necessary hardware: a discrete logic circuit(s) having logic gates for implementing logic functions upon an application of data signals, an application specific integrated circuit having appropriate combinational logic gates, a programmable gate array(s) (PGA), a field programmable gate array (FPGA), and / or the like.
[0065] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Descriptive expressions of the above terms in the present specification do not necessarily refer to the same embodiment or example. Also, the specific feature, structure, material or characteristic described can be combined in any one or more embodiments or examples in an appropriate manner.
[0066] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.
[0067] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.
[0068] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0069] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0070] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as a limitation on the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.
Claims
1. A method for recovering production in a top-blown furnace, characterized in that, The method comprises: If the shutdown duration of the top-blown furnace exceeds the first duration threshold and does not exceed the second duration threshold, after discharging half of the melt in the top-blown furnace, natural gas is fed into the top-blown furnace for heat preservation; wherein the first duration threshold is less than the second duration threshold; The output port of the top-blown furnace is blocked by flammable blocking objects; In response to the top-blown furnace being re-heated, oxygen is input into the top-blown furnace to burn the flammable blocking objects of the output port, so that the output port is opened; Material is fed into the top-blown furnace, so that the top-blown furnace resumes production, and melt is output outside through the output port.
2. The method of claim 1, wherein, The first duration threshold is 10 hours, and the second duration threshold is 30 hours.
3. The method of claim 1, wherein, The oxygen input into the top-blown furnace comprises: An oxygen-burning pipe with an inner diameter of 6 mm and a wall thickness of 2 mm is ignited to generate oxygen, and the generated oxygen is input into the top-blown furnace.
4. The method of claim 1, wherein, The flammable blocking objects are yellow mud mixed with coal.
5. The method of claim 1, wherein, After discharging half of the melt in the top-blown furnace, the natural gas is fed into the top-blown furnace for heat preservation, which comprises: After discharging half of the melt in the top-blown converter, the remaining melt inventory is adjusted based on the height of the outlet, and natural gas is delivered into the converter through a lance for heat preservation; wherein the flow rate of the delivered natural gas is 1000-1200 Nm 3 / h.
6. The method of claim 1, wherein, The method further comprises: If the shutdown duration does not exceed the first duration threshold, natural gas is fed into the furnace for heat preservation until the top-blown furnace is re-heated.
7. The method of claim 1, wherein, The method further comprises: If the shutdown duration exceeds the second duration threshold, all dischargeable melt in the top-blown furnace is discharged, and natural gas is fed into the top-blown furnace to melt the melt solidification at the bottom of the top-blown furnace; New melt is generated in the top-blown furnace to make the top-blown furnace resume production.
8. The method of claim 7, wherein, The generation of new melt in the top-blown furnace comprises: Natural gas and slag are fed into the top-blown furnace to generate new melt.
9. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by a processor, implements the method for resuming production of a top-blown furnace according to any one of claims 1-8.
10. An electronic device, comprising: Comprise: Memory, processor; The memory has stored thereon a computer program, which, when executed by the processor, implements the method for resuming production of a top-blown furnace according to any one of claims 1-8.