Control method and device for increasing vanadium slag yield in converter vanadium extraction, equipment and medium

Abstract

The invention relates to a control method, device, equipment and medium for increasing the yield of vanadium slag in converter vanadium extraction, and relates to the field of converter vanadium extraction. The control method comprises the steps that S1, a converter returns to the zero position, an oxygen lance descends to the first liquid level at the first speed, and then oxygenation is started; s2, a vanadium extraction cold material is added within the first preset time, and then the oxygen lance is lifted to the second liquid level within the second preset time for first blowing; s3, reducing the oxygen lance to a third liquid level at a third speed in the first blowing, carrying out second blowing, and lifting the lance and closing oxygen after the liquid phase reaches the final temperature. According to the control method provided by the invention, by optimizing the oxygen blowing process of vanadium extraction of the converter, the oxidation effect of the vanadium slag can be remarkably improved, the yield of the vanadium slag is favorably improved, and meanwhile, the iron content in the vanadium slag and the flowability of the vanadium slag can also be reasonably controlled.

Description

Technical Field

[0001] This invention relates to the field of vanadium extraction in converters, and specifically to a method, apparatus, equipment, and medium for controlling the production of vanadium slag in vanadium extraction in converters. Background Technology

[0002] Currently, with the continuous mining of vanadium-titanium magnetite, high-quality magnetite resources are becoming increasingly scarce, and its vanadium content is gradually decreasing, leading to a downward trend in the vanadium content (V) of molten iron. Furthermore, due to the special control requirements of blast furnace conditions in vanadium-titanium smelting, the higher the vanadium content (V) of molten iron, the more difficult it is to maintain stable and smooth operation of the blast furnace, which also restricts the need to control the vanadium content (V) at a relatively low level.

[0003] In the process of vanadium extraction in converters, it is necessary to precisely control the oxygen supply intensity, blowing time, and cooling intensity. For example, CN109609719A discloses a binary gas supply converter vanadium extraction method, which belongs to the field of iron and steel metallurgy technology. It adjusts the gas supply and blowing conditions for different vanadium-titanium molten iron, thereby reducing residual vanadium and carbon loss, increasing vanadium oxidation rate, and improving the quality of semi-steel. This scheme uses two different gases in different proportions for blowing, which solves the problem of high residual vanadium and low V2O5 in vanadium slag under different temperatures and silicon contents of molten iron.

[0004] CN118406901A discloses a converter vanadium extraction method and its application, relating to the field of converter vanadium extraction technology. The vanadium extraction method includes: S1, introducing vanadium-containing molten iron into the converter and adding a first preset material and pig iron; S2, blowing oxygen from the top of the furnace; S3, adding coolant, controlling the semi-steel temperature to a preset temperature, and completing vanadium extraction after a preset time; the first preset material is a mixture of quartz sand and iron oxide balls. This solution solves the problem that existing converter vanadium extraction methods result in a large amount of iron in the vanadium slag after smelting and a low slag yield, leading to low vanadium extraction efficiency and poor effect.

[0005] However, changes in the composition of molten iron can easily lead to a decrease in vanadium oxidation rate. Due to the combined effects of various factors, the vanadium oxidation rate is low, the output of vanadium slag is limited, and the pressure of cost control is severe. Therefore, it is urgent to find a high-yield vanadium extraction process from vanadium slag. Summary of the Invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a method, device, equipment and medium for controlling the production of vanadium slag in vanadium extraction in converters, so as to solve the defect that the quality of vanadium slag is difficult to meet the requirements.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention provides a method for controlling the production of vanadium slag during vanadium extraction in a converter, the method comprising:

[0009] S1. The converter returns to zero position, and the oxygen lance descends to the first liquid level at the first speed and then begins to fill with oxygen.

[0010] S2. Add vanadium-extracting cold material within the first preset time, and then raise the oxygen lance to the second liquid level within the second preset time to carry out the first blowing process.

[0011] S3. In the first blowing process, the oxygen lance is lowered to the third liquid level at the third speed, and the second blowing process is carried out until the liquid phase reaches the final temperature before the lance is lifted and the oxygen is turned off.

[0012] The control method provided by this invention can significantly improve the oxidation effect of vanadium slag by optimizing the oxygen blowing process of vanadium extraction in the converter, which is conducive to increasing the yield of vanadium slag. At the same time, the iron content and fluidity of vanadium slag can also be reasonably controlled.

[0013] As a preferred embodiment of the present invention, the first speed includes: the oxygen lance descends by 0.4-0.6m each time.

[0014] Preferably, the first liquid level includes a height of 0.8-1m above the liquid surface from the oxygen lance.

[0015] As a preferred technical solution of the present invention, the first preset time includes: oxygenation ≤ 3 min.

[0016] Preferably, the vanadium extraction cold feedstock includes vanadium-titanium ore and vanadium-containing pellets.

[0017] Preferably, the vanadium-titanium ore comprises, by mass percentage: V2O5 ≥ 1.7%, TFe ≥ 54%.

[0018] Preferably, the vanadium-containing pellets comprise, by mass percentage: V2O5 ≥ 0.20%, TFe ≥ 60%.

[0019] Preferably, the amount of vanadium-titanium ore added is 35-45 kg / t of molten iron.

[0020] Preferably, the amount of vanadium-containing pellets added is 10-20 kg / t of molten iron.

[0021] Preferably, the second preset time includes: oxygenation time t: 3 < t ≤ 4 min.

[0022] Preferably, the second speed includes: the oxygen lance moving 0.04-0.06m each time.

[0023] Preferably, the second liquid level includes a height of 1.2-1.3m above the liquid surface from the oxygen lance.

[0024] As a preferred embodiment of the present invention, the first blowing time is 1-2 minutes.

[0025] As a preferred embodiment of the present invention, the third speed includes: the oxygen lance moving 0.04-0.06m each time.

[0026] Preferably, the third liquid level includes: the oxygen lance is 0.8-0.9m above the liquid surface.

[0027] As a preferred embodiment of the present invention, the second blowing time is 30-60 seconds.

[0028] Preferably, the endpoint temperature is 1360-1400℃.

[0029] As a preferred embodiment of the present invention, the oxygen flow rate during oxygen blowing in the control method is controlled to be 19000-21000 m³ / h. 3 / h.

[0030] Preferably, the oxygen pressure in the oxygen blowing process of the control method is controlled to be ≥0.8MPa.

[0031] Secondly, the present invention provides a control device for increasing the yield of vanadium slag during vanadium extraction in a converter, the control device comprising:

[0032] The first control module is used to control the converter to return to the zero position, and the oxygen lance will start oxygenation after descending to the first liquid level at the first speed.

[0033] The second control module is used to control the addition of vanadium-extracting cold material within a first preset time, and then raise the oxygen lance to the second liquid level within a second preset time to carry out the first blowing process.

[0034] The third control module is used to control the oxygen lance to be lowered to the third liquid level at the third speed during the first blowing process, and to lift the lance and shut off the oxygen lance after the liquid phase reaches the final temperature during the second blowing process.

[0035] Thirdly, the present invention provides an electronic device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method for increasing vanadium slag production in converter vanadium extraction as described in the first aspect.

[0036] Fourthly, the present invention provides a computer storage medium storing computer-executable instructions, which, when executed by a processor, implement the control method for increasing vanadium slag production in converter vanadium extraction as described in the first aspect.

[0037] Compared with existing technical solutions, the present invention has the following beneficial effects:

[0038] (1) In the process of vanadium extraction and smelting, the present invention can maximize the production of vanadium slag by adding high V content cold material, which can not only obtain the vanadium slag production from the oxidation of molten iron, but also obtain the vanadium slag production from V2O5 in the cold material. The actual vanadium slag production reaches more than 58 kg / t of molten iron.

[0039] (2) During the blowing process of this invention, the residual V of semi-steel is reduced to below 0.018% by the coupling effect of oxygen flow rate, oxygen pressure and cold material addition, and the vanadium oxidation rate is increased to above 92.3%. At the same time, the iron content and fluidity of vanadium slag can also be reasonably controlled. Attached Figure Description

[0040] Figure 1 This is a flowchart of a method for controlling the yield of vanadium slag in vanadium extraction in a converter, provided by an embodiment of the present invention.

[0041] Figure 2 This is a schematic diagram of a control device for increasing vanadium slag production in converter vanadium extraction provided in an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of an electronic device provided in an embodiment of the present invention.

[0043] In the picture:

[0044] 100 - First control module, 200 - Second control module, 300 - Third control module;

[0045] 10-Electronic device, 11-Processor, 12-ROM, 13-RAM, 14-Bus, 15-I / O interface, 16-Input unit, 17-Output unit, 18-Storage unit, 19-Communication unit.

[0046] The present invention will now be described in further detail. However, the examples described below are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims. Detailed Implementation

[0047] To better illustrate the present invention and facilitate understanding of its technical solutions, typical but non-limiting embodiments of the present invention are as follows:

[0048] I. This embodiment provides a method for controlling the yield of vanadium slag during vanadium extraction in a converter, the process is as follows: Figure 1 As shown, the control method includes:

[0049] S1. The converter returns to zero position, and the oxygen lance descends to the first liquid level at the first speed and then begins to fill with oxygen.

[0050] S2. Add vanadium-extracting cold material within the first preset time, and then raise the oxygen lance to the second liquid level within the second preset time to carry out the first blowing process.

[0051] S3. In the first blowing process, the oxygen lance is lowered to the third liquid level at the third speed, and the second blowing process is carried out until the liquid phase reaches the final temperature before the lance is lifted and the oxygen is turned off.

[0052] In this invention, "converter returning to zero position" means that the tilt angle of the converter is zero and the converter is in an upright state.

[0053] In this invention, "lifting the lance and shutting off the oxygen" means raising the oxygen lance to the initial position and shutting off the oxygen supply, which means that the converter can be tapped and vanadium slag can be collected after the process is completed.

[0054] The first speed includes: the oxygen lance descends by 0.4-0.6m each time, for example, it can be 0.4m, 0.42m, 0.44m, 0.46m, 0.48m, 0.5m, 0.52m, 0.54m, 0.56m, 0.58m or 0.6m, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0055] The first liquid level includes a height of 0.8-1m above the liquid surface from the oxygen lance. For example, it can be 0.8m, 0.82m, 0.84m, 0.86m, 0.88m, 0.9m, 0.92m, 0.94m, 0.96m, 0.98m or 1m, but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0056] The first preset time includes: oxygenation ≤ 3 min.

[0057] In this invention, the vanadium extraction cold material is added after oxygenation for ≤3 minutes.

[0058] The vanadium extraction cold materials include vanadium-titanium ore and vanadium-bearing pellets.

[0059] The vanadium-titanium ore, by mass percentage, comprises: V2O5 ≥ 1.7% and TFe ≥ 54%.

[0060] The vanadium-containing pellets, by mass percentage, include: V2O5 ≥ 0.20% and TFe ≥ 60%.

[0061] The amount of vanadium-titanium ore added is 35-45 kg / t of molten iron, for example, it can be 35 kg / t of molten iron, 36 kg / t of molten iron, 37 kg / t of molten iron, 38 kg / t of molten iron, 39 kg / t of molten iron, 40 kg / t of molten iron, 41 kg / t of molten iron, 42 kg / t of molten iron, 43 kg / t of molten iron, 44 kg / t of molten iron or 45 kg / t of molten iron, etc., but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0062] The amount of vanadium-containing pellets added is 10-20 kg / t of molten iron, for example, it can be 10 kg / t of molten iron, 11 kg / t of molten iron, 12 kg / t of molten iron, 13 kg / t of molten iron, 14 kg / t of molten iron, 15 kg / t of molten iron, 16 kg / t of molten iron, 17 kg / t of molten iron, 18 kg / t of molten iron, 19 kg / t of molten iron or 20 kg / t of molten iron, etc., but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0063] The second preset time includes: oxygenation time t: 3 < t ≤ 4 min, for example, it can be 3.1 min, 3.2 min, 3.3 min, 3.4 min, 3.5 min, 3.6 min, 3.7 min, 3.8 min, 3.9 min or 4 min, etc., but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0064] In this invention, when oxygenation time is >3 min and ≤4 min, the oxygen lance is raised to the second liquid level.

[0065] The second speed includes: the oxygen lance moving 0.04-0.06m each time, for example, 0.04m, 0.042m, 0.044m, 0.046m, 0.048m, 0.05m, 0.052m, 0.054m, 0.056m, 0.058m or 0.06m, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0066] The second liquid level includes the oxygen lance being 1.2-1.3m above the liquid surface. For example, it can be 1.2m, 1.21m, 1.22m, 1.23m, 1.24m, 1.25m, 1.26m, 1.27m, 1.28m, 1.29m, or 1.3m, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0067] The first blowing time is 1-2 minutes, for example, it can be 1 minute, 1.1 minutes, 1.2 minutes, 1.3 minutes, 1.4 minutes, 1.5 minutes, 1.6 minutes, 1.7 minutes, 1.8 minutes, 1.9 minutes or 2 minutes, but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0068] The third speed includes: the oxygen lance moving 0.04-0.06m each time, for example, 0.04m, 0.042m, 0.044m, 0.046m, 0.048m, 0.05m, 0.052m, 0.054m, 0.056m, 0.058m or 0.06m, etc., but not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0069] In this invention, the oxygen lance is simultaneously lowered to the third liquid level during the first blowing process, and then the second blowing is carried out.

[0070] The third liquid level includes a height of 0.8-0.9m above the liquid surface from the oxygen lance. For example, it can be 0.8m, 0.81m, 0.82m, 0.83m, 0.84m, 0.85m, 0.86m, 0.87m, 0.88m, 0.89m, or 0.9m, but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0071] The second blowing time is 30-60s, for example, it can be 30s, 33s, 36s, 39s, 42s, 45s, 48s, 51s, 54s, 57s or 60s, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0072] The endpoint temperature is 1360-1400℃, for example, it can be 1360℃, 1364℃, 1368℃, 1372℃, 1376℃, 1380℃, 1384℃, 1388℃, 1392℃, 1396℃ or 1400℃, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0073] In the oxygen blowing process of the control method, the oxygen flow rate is controlled to be 19000-21000 m³ / h. 3 / h, for example, could be 19000m 3 / h、19200m 3 / h、19400m 3 / h、19600m 3 / h、19800m 3 / h、20000m 3 / h、20200m 3 / h、20400m 3 / h、20600m 3 / h、20800m 3 / h or 21000m 3 / h, etc., but not limited to the listed values; other unlisted values ​​within this range also meet the requirements.

[0074] Wherein, the oxygen pressure in the oxygen blowing process of the control method is controlled to be ≥0.8MPa, for example, it can be 0.8MPa, 0.82MPa, 0.84MPa, 0.86MPa, 0.88MPa, 0.9MPa, 0.92MPa, 0.94MPa, 0.96MPa, 0.98MPa or 1MPa, etc., but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0075] II. This embodiment provides a control device for increasing the yield of vanadium slag during vanadium extraction in a converter, such as... Figure 2 As shown, the control device includes:

[0076] The first control module 100 is used to control the converter to return to the zero position, and the oxygen lance to descend to the first liquid level at the first speed and then start oxygen filling.

[0077] The second control module 200 is used to control the addition of vanadium-extracting cold material within a first preset time, and then raise the oxygen lance to the second liquid level within a second preset time to carry out the first blowing process.

[0078] The third control module 300 is used to control the oxygen lance to be lowered to the third liquid level at the third speed during the first blowing process, and to lift the lance and shut off the oxygen lance after the liquid phase reaches the final temperature during the second blowing process.

[0079] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0080] III. This embodiment provides an electronic device intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0081] like Figure 3As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded into the RAM 13 from storage unit 18. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An I / O interface 15 is also connected to the bus 14.

[0082] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0083] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, central processing unit (CPU), graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as control methods for increasing vanadium slag production in converter vanadium extraction.

[0084] In some embodiments, the method for controlling the production of vanadium slag in converter vanadium extraction can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the method for controlling the production of vanadium slag in converter vanadium extraction described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the method for controlling the production of vanadium slag in converter vanadium extraction by any other suitable means (e.g., by means of firmware).

[0085] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0086] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0087] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0088] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0089] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0090] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0091] The server provided in this embodiment includes: a memory, a processor, and a computer program stored in the memory and capable of running on the processor. When the processor executes the program, it implements a control method for increasing the yield of vanadium slag in vanadium extraction from a converter.

[0092] Unless otherwise specifically stated, terms such as processing, calculation, operation, determination, display, etc., may refer to the actions and / or processes of one or more processing or computing systems or similar devices that represent the manipulation and conversion of data representing physical (e.g., electronic) quantities within the registers or memory of the processing system into other data similarly representing physical quantities within the memory, registers, or other such information storage, transmission, or display devices of the processing system. Information and signals can be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0093] Those skilled in the art will also understand that the various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with embodiments of the present invention can all be implemented as electronic hardware, computer software, or a combination thereof. To clearly illustrate the interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps described above are generally described in terms of their functionality. Whether this functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Those skilled in the art can implement the described functionality in alternative ways for each specific application; however, such implementation decisions should not be construed as departing from the scope of protection of the present invention.

[0094] The steps of the methods or algorithms described in conjunction with the embodiments herein can be directly embodied in hardware, software modules executed by a processor, or a combination thereof. The software modules can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium well known in the art. An exemplary storage medium is connected to the processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. The ASIC can reside in a user terminal. Alternatively, the processor and storage medium can exist as discrete components in the user terminal.

[0095] For software implementation, the techniques described in this invention can be implemented using modules (e.g., procedures, functions, etc.) that perform the functions described in this application. This software code can be stored in memory units and executed by a processor. The memory units can be implemented within the processor or externally; in the latter case, they are communicatively coupled to the processor via various means, as is well known in the art.

[0096] IV. To illustrate the vanadium extraction effect achievable by the method for controlling the yield of vanadium slag in converter vanadium extraction provided by this invention, the following example is used for explanation:

[0097] Example 1

[0098] This embodiment provides a method for controlling the yield of vanadium slag during vanadium extraction in a converter, as detailed below:

[0099] (1) 160t of molten iron was added to the vanadium extraction converter;

[0100] (2) Return the converter to zero position, lower the oxygen lance to the ignition height and start the oxygen supply. Every 5 seconds, lower the lance position by 0.5m / time until it reaches a height of +1.0m above the liquid surface.

[0101] (3) Add 15 kg / t of vanadium-containing pellets (V2O5 is 0.20% and TFe is 60% by mass percentage) to the furnace, and add 40 kg / t of vanadium-titanium ore (V2O5 is 1.7% and TFe is 54% by mass percentage). The addition is completed when oxygenation reaches 3 min.

[0102] (4) After blowing oxygen for 4 minutes, increase the height of the oxygen lance to the liquid level successively to +1.05, +1.10, +1.15 and +1.20 m;

[0103] (5) The blowing process lasts for 1 minute, during which the oxygen lance height is lowered sequentially to +1.15, +1.10, +1.05, +1.0, +0.95, and +0.9m;

[0104] (6) Continue low-position blowing for 45 seconds, and lift the lance and turn off the oxygen when the final temperature reaches 1380℃.

[0105] The oxygen flow rate during the blowing process is controlled at 20,000 m³ / h. 3 / h, working oxygen pressure is 0.8MPa.

[0106] Example 2

[0107] This embodiment provides a method for controlling the yield of vanadium slag during vanadium extraction in a converter, as detailed below:

[0108] (1) 160t of molten iron was added to the vanadium extraction converter;

[0109] (2) Return the converter to zero position, lower the oxygen lance to the ignition height and start the oxygen supply. Every 5 seconds, lower the lance position by 0.5m / time until it reaches a height of +1.0m above the liquid surface.

[0110] (3) Add 15 kg / t of vanadium-containing pellets (V2O5 is 0.40% and TFe is 62% by mass percentage) to the furnace, and add 35 kg / t of vanadium-titanium ore (V2O5 is 1.8% and TFe is 57% by mass percentage). The addition is completed when oxygenation reaches 3 min.

[0111] (4) After blowing oxygen for 3.5 minutes, increase the height of the oxygen lance to the liquid level successively to +1.05, +1.10, +1.15 and +1.20 m;

[0112] (5) The blowing process lasts for 1 minute, during which the oxygen lance height is lowered sequentially to +1.15, +1.10, +1.05, +1.0, +0.95, and +0.9m;

[0113] (6) Continue low-position blowing for 30 seconds, and lift the lance and turn off the oxygen when the final temperature reaches 1360℃.

[0114] The oxygen flow rate during the blowing process is controlled at 19000 m³ / h. 3 / h, working oxygen pressure is 0.9MPa.

[0115] Example 3

[0116] This embodiment provides a method for controlling the yield of vanadium slag during vanadium extraction in a converter, as detailed below:

[0117] (1) 160t of molten iron was added to the vanadium extraction converter;

[0118] (2) Return the converter to zero position, lower the oxygen lance to the ignition height and start the oxygen supply. Every 5 seconds, lower the lance position by 0.5m / time until it reaches a height of +1.0m above the liquid surface.

[0119] (3) Add 15 kg / t of vanadium-containing pellets (0.20% V2O5 and 60% TFe by mass percentage) to the furnace, and add 45 kg / t of vanadium-titanium ore (1.7% V2O5 and 54% TFe by mass percentage). The addition is completed when oxygenation reaches 3 min.

[0120] (4) After blowing oxygen for 4 minutes, increase the height of the oxygen lance to the liquid level successively to +1.05, +1.10, +1.15 and +1.20 m;

[0121] (5) The blowing process lasts for 1 minute, during which the oxygen lance height is lowered sequentially to +1.15, +1.10, +1.05, +1.0, +0.95, and +0.9m;

[0122] (6) Continue low-position blowing for 60 seconds, and lift the lance and turn off the oxygen when the final temperature reaches 1400℃.

[0123] The oxygen flow rate during the blowing process is controlled at 21000 m³ / h. 3 / h, working oxygen pressure is 1MPa.

[0124] Example 4

[0125] The only difference from Example 1 is that the height of the oxygen gun to the liquid surface in step (2) is 1.5m.

[0126] Example 5

[0127] The only difference from Example 1 is that the oxygen lance is raised to 1.2m after 2 minutes of oxygen blowing.

[0128] Example 6

[0129] The only difference from Example 1 is that the oxygen lance is raised to 1.2m after 5 minutes of oxygen blowing.

[0130] Example 7

[0131] The only difference from Example 1 is that step (6) involves maintaining the low gun position for 20 seconds.

[0132] Example 8

[0133] The only difference from Example 1 is that step (6) involves maintaining the low gun position for 80 seconds.

[0134] Example 9

[0135] The only difference from Example 1 is that the oxygen gun is lifted and the oxygen is turned off when the final temperature reaches 1330°C.

[0136] Example 10

[0137] The only difference from Example 1 is that the oxygen gun is lifted and the oxygen is turned off when the final temperature reaches 1420°C.

[0138] Example 11

[0139] The only difference from Example 1 is that vanadium-containing pellets are not added.

[0140] Example 12

[0141] The only difference from Example 1 is that vanadium-titanium ore is not added.

[0142] Comparative Example 1

[0143] The only difference from Example 1 is that in step (5), the blowing is carried out for 1 minute, the oxygen lance height is not adjusted during the process, and the oxygen lance position is lowered to +0.9m after the blowing is completed.

[0144] Comparative Example 2

[0145] The only difference from Example 1 is that low-position blowing is not performed.

[0146] The vanadium slags obtained in the examples and comparative examples were tested, and the results are shown in Table 1 below.

[0147] Table 1

[0148]

[0149] The liquidity assessment is explained below:

[0150] Excessive thinness refers to vanadium slag being too thin, resembling "water" or "thin soup," with excellent fluidity but lacking viscosity. Its impact on production includes: ① Increased chemical erosion: The increased wettability and permeability of the thin slag to the furnace lining refractory materials exacerbate chemical erosion (especially FeO erosion), reducing furnace life; ② Severe physical scouring: The high-speed flowing slag liquid causes severe mechanical erosion of the furnace lining; ③ Increased susceptibility to splashing: During blowing or slag removal, thin slag is more prone to splashing, leading to safety risks and metal loss; ④ High TFe content in the slag: Although beneficial for vanadium oxidation, excessively high FeO content means increased iron loss, increasing the cost of subsequent vanadium slag treatment (such as vanadium extraction).

[0151] Moderate consistency refers to the vanadium slag exhibiting a "porridge-like" or "viscous slurry" appearance, possessing good fluidity, and able to evenly cover the surface of molten iron without being too thin. Its impact on production includes: ① Highly efficient mass transfer: The slag-iron interface reaction is active, and vanadium is efficiently and rapidly oxidized and transferred from molten iron to the slag (V2O3 enters the slag phase); ② Good separation: During slag removal, the slag and semi-steel (molten iron after vanadium extraction) can be clearly and cleanly separated, with less iron in the slag and a high vanadium recovery rate; ③ Stable operation: The furnace condition is stable, with less splashing, making it easy to control.

[0152] Poor quality refers to vanadium slag becoming stickier and thicker, with reduced fluidity, appearing as "lumps" or "pasty" and spreading unevenly on the surface of molten iron. The impact on production includes: ① Slower reaction: The reduced reaction area at the slag-iron interface increases mass transfer resistance and slows vanadium oxidation, potentially leading to higher residual vanadium levels at the final stage; ② Difficult separation: Slag and iron are not easily separated, and iron beads are easily trapped in the slag, resulting in vanadium loss and a decrease in semi-steel yield; ③ Inconvenient operation: The sticky slag may adhere to the furnace mouth and slag outlet, requiring cleaning.

[0153] Poor quality refers to vanadium slag being extremely viscous, almost "dry" or "solidified," and barely flowing. It forms a crust or large agglomerates on the surface of molten iron, causing the reaction to stagnate. The impact on production includes: ① Reaction stagnation: The reaction at the slag-iron interface is severely hindered, and the vanadium oxidation process can hardly proceed; ② Inability to separate properly: The slag and semi-steel are mixed together, making it impossible to properly remove or dump the slag, which may lead to production interruption; ③ Risk of equipment damage: The crusted slag may damage the furnace lining or block the taphole.

[0154] In summary, the control method provided by this invention can significantly improve the oxidation effect of vanadium slag by optimizing the oxygen blowing process of vanadium extraction in the converter, which is conducive to increasing the yield of vanadium slag. At the same time, the iron content and fluidity of vanadium slag can also be reasonably controlled.

[0155] The present invention is described in detail through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must rely on the above detailed structural features to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions for the components used in the present invention, additions of auxiliary components, and selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0156] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0157] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0158] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A method for controlling the yield of vanadium slag during vanadium extraction in a converter, characterized in that, The control method includes: S1. The converter returns to zero position, and the oxygen lance descends to the first liquid level at the first speed and then begins to fill with oxygen. S2. Add vanadium-extracting cold material within the first preset time, and then raise the oxygen lance to the second liquid level within the second preset time to carry out the first blowing process. S3. In the first blowing process, the oxygen lance is lowered to the third liquid level at the third speed, and the second blowing process is carried out until the liquid phase reaches the final temperature before the lance is lifted and the oxygen is turned off.

2. The control method as described in claim 1, characterized in that, The first velocity includes: the oxygen lance descending 0.4-0.6m each time; Preferably, the first liquid level includes a height of 0.8-1m above the liquid surface from the oxygen lance.

3. The control method as described in claim 1, characterized in that, The first preset time includes: oxygenation ≤ 3 min; Preferably, the vanadium extraction cold feedstock includes: vanadium-titanium ore and vanadium-containing pellets; Preferably, the vanadium-titanium ore comprises, by mass percentage: V₂O₅ ≥ 1.7%, TFe ≥ 54%; Preferably, the vanadium-containing pellets comprise, by mass percentage: V₂O₅ ≥ 0.20%, TFe ≥ 60%; Preferably, the amount of vanadium-titanium ore added is 35-45 kg / t of molten iron; Preferably, the amount of vanadium-containing pellets added is 10-20 kg / t of molten iron; Preferably, the second preset time includes: oxygenation time t: 3 < t ≤ 4 min; Preferably, the second speed includes: the oxygen lance moving 0.04-0.06m each time; Preferably, the second liquid level includes a height of 1.2-1.3m above the liquid surface from the oxygen lance.

4. The control method as described in claim 1, characterized in that, The first blowing time is 1-2 minutes.

5. The control method as described in claim 1, characterized in that, The third speed includes: the oxygen lance moving 0.04-0.06m each time; Preferably, the third liquid level includes: the oxygen lance is 0.8-0.9m above the liquid surface.

6. The control method as described in claim 1, characterized in that, The second blowing time is 30-60 seconds; Preferably, the endpoint temperature is 1360-1400℃.

7. The control method as described in claim 1, characterized in that, In the oxygen blowing process described in the control method, the oxygen flow rate is controlled to be 19000-21000 m³ / h. 3 / h; Preferably, the oxygen pressure in the oxygen blowing process of the control method is controlled to be ≥0.8MPa.

8. A control device for increasing vanadium slag production during vanadium extraction in a converter, characterized in that, The control device includes: The first control module is used to control the converter to return to the zero position, and the oxygen lance will start oxygenation after descending to the first liquid level at the first speed. The second control module is used to control the addition of vanadium-extracting cold material within a first preset time, and then raise the oxygen lance to the second liquid level within a second preset time to carry out the first blowing process. The third control module is used to control the oxygen lance to be lowered to the third liquid level at the third speed during the first blowing process, and to lift the lance and shut off the oxygen lance after the liquid phase reaches the final temperature during the second blowing process.

9. An electronic device, characterized in that, The electronic device includes: At least one processor; and a memory communicatively connected to said at least one processor; The memory stores a computer program that can be executed by the at least one processor, which is then executed by the at least one processor to enable the at least one processor to perform the control method for increasing vanadium slag production in converter vanadium extraction as described in any one of claims 1-7.

10. A computer storage medium, characterized in that, The computer storage medium stores computer-executable instructions, which, when executed by a processor, implement the control method for increasing vanadium slag production in converter vanadium extraction as described in any one of claims 1-7.

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