Thin-wall refractory material slag adhering thickness numerical simulation calculation method, device, equipment, medium and product for 6500mm-diameter rock wool electric furnace

Abstract

The invention discloses a thin-wall refractory material slag adhering thickness numerical simulation calculation method, device, equipment, medium and product for a rock wool electric furnace with the diameter of 6500 mm. Physical property parameters of a melt and a refractory material of the rock wool electric furnace with the diameter of 6500 mm are obtained; based on the furnace profile structure parameters of the rock wool electric furnace with the diameter of 6500 mm, an electric furnace three-dimensional physical model is established, and grids are divided; solving a Maxwell equation set to obtain related parameters of an electromagnetic field, and calculating an electromagnetic field equation to obtain Joule heat and electromagnetic force; utilizing a mass conservation equation, a momentum conservation equation and an energy conservation equation to realize coupling of an electromagnetic field, a flow field and a temperature field; describing solidification and melting phenomena of the slag and the tempering material by using an enthalpy porous medium method, and calculating the thickness of the slag on the wall of the furnace wall; and the function relation between the slag adhering thickness of the rock wool electric furnace with the diameter of 6500 mm and the cooling water amount is established. According to the method, the furnace wall hanging slag thickness data of the rock wool electric furnace with the diameter of 6500 mm under different cooling water quantity conditions can be accurately calculated and obtained.

Description

Technical Field

[0001] The present invention relates to the field of mineral wool, and more specifically, to a numerical simulation calculation method, device, equipment, medium, and product for the slag attachment thickness of a thin-wall refractory used in a 6500 mm diameter rock wool electric furnace. Background Art

[0002] With the in-depth promotion of carbon peaking and carbon neutrality, energy conservation and carbon reduction in the mineral wool industry have become increasingly important. The traditional rock wool production uses a cupola process for raw material melting. The melting energy is coke, which not only consumes a large amount of energy but also emits a large amount of CO 2 in the production process. In recent years, various countries have been promoting the adjustment of the rock wool melting process, changing the cupola to a more green and low-carbon electric furnace process.

[0003] Currently, there are mainly two types of rock wool electric furnace processes: one is the cold-charge rock wool electric furnace, and the other is the hot slag rock wool electric furnace. The schemes for the furnace wall refractories of these two processes are different. The furnace wall refractory of the cold-charge rock wool electric furnace uses a thin-wall slag attachment type, that is, during the production operation, a thin-wall refractory with good thermal conductivity forms a slag attachment layer under strong cooling conditions, which can well protect the furnace wall refractory and extend the service life of the electric furnace. According to actual production data, the cold-charge electric furnace can form a slag attachment layer with a thickness of 20 - 30 mm during the production operation, and the service life of the refractory usually exceeds 1 year and can generally reach 2 years. The hot slag rock wool electric furnace usually uses a thick-wall heat-insulating furnace wall, and the furnace wall cannot form a slag attachment layer for protection. The service life of the refractory is generally only half a year, and some are even only 3 - 4 months.

[0004] The formation of a slag attachment layer on the furnace wall of a rock wool electric furnace is a necessary means to improve its service life. However, there is still a lack of a method for obtaining the data of the slag attachment layer thickness on the furnace wall of a rock wool electric furnace. Therefore, there is an urgent need to develop a method for calculating the slag attachment thickness of the thin-wall refractory of a rock wool electric furnace. Summary of the Invention

[0005] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a numerical simulation calculation method, device, equipment, medium, and product for the slag attachment thickness of a thin-wall refractory used in a 6500 mm diameter rock wool electric furnace. By establishing a multi-field coupling mathematical model of the electric furnace melt electromagnetic field, temperature field, and flow field, the conditions for the furnace wall refractory of a 6500 mm diameter rock wool electric furnace to form slag attachment and the functional relationship between the slag attachment layer thickness and the cooling water volume are calculated, and the slag attachment thickness data of the furnace wall of a 6500 mm diameter rock wool electric furnace under different cooling water volume conditions are accurately calculated.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The present invention discloses a numerical simulation calculation method for the slag attachment thickness of a thin-wall refractory used in a 6500 mm diameter rock wool electric furnace;

[0008] Obtain the physical property parameters of the melt and refractories of a 6500mm diameter rock wool electric furnace;

[0009] Based on the furnace type structure parameters of the 6500mm diameter rock wool electric furnace, establish a three-dimensional physical model of the electric furnace and divide the grid;

[0010] Solve the Maxwell equations to obtain the parameters related to the electromagnetic field, calculate the electromagnetic field equations, and obtain the Joule heat and electromagnetic force;

[0011] Use the mass conservation equation, momentum conservation equation, and energy conservation equation to realize the coupling of the electromagnetic field, flow field, and temperature field;

[0012] Use the enthalpy-porous medium method to describe the solidification and melting phenomena of the slag and conditioning materials, and calculate the thickness of the slag adhering to the furnace wall;

[0013] Establish the functional relationship between the slag adhering thickness and the cooling water volume of the 6500mm diameter rock wool electric furnace.

[0014] Preferably, the physical property parameters include:

[0015] The density is 2.5 - 2.8 g·cm -3 ;

[0016] The specific heat is 1200 - 1500 j·kg -1 ·K -1 ;

[0017] The viscosity is 0.2 - 0.8 Pa·s;

[0018] The thermal conductivity is 0.3 - 0.5 W·m -1 ·K -1 ;

[0019] The electrical conductivity is 1.5 - 20 S·m -1 ;

[0020] The solid-liquid phase temperature is 1453 - 1513 K.

[0021] Preferably, the heating power of the 6500mm diameter rock wool electric furnace is 4500 - 5000 kw, and the cooling water temperature difference is 8 - 15 K.

[0022] Preferably, the refractory material of the furnace wall of the 6500mm diameter rock wool electric furnace is silicon carbide ramming material, with a thickness of 50mm and a thermal conductivity of 15 - 20 W·m -1 ·K -1 .

[0023] Preferably, the furnace type structure parameters of the 6500mm diameter rock wool electric furnace include slag, electrodes, molten iron, and refractories of each part;

[0024] The grid division of the computational domain is carried out by combining structured and unstructured grids, and the grid encryption operation is performed on the slag discharge port area.

[0025] Preferably, the functional relationship between the slag hanging thickness δ of the 6500mm diameter rock wool electric furnace and the cooling water volume Q is as follows:

[0026] δ = -0.02*Q 2 +10.36*Q - 1235.9.

[0027] The present invention also discloses a numerical simulation calculation device for the slag hanging thickness of thin-wall refractories, including:

[0028] A model establishment unit for establishing a three-dimensional physical model of the electric furnace and dividing the grid;

[0029] A solution strategy setting unit for solving Maxwell's equations to obtain electromagnetic field-related parameters, calculating the electromagnetic field equation, and obtaining Joule heat and electromagnetic force;

[0030] A model application unit, which uses the mass conservation equation, momentum conservation equation, and energy conservation equation to realize the coupling of the electromagnetic field, flow field, and temperature field; uses the enthalpy porous medium method to describe the solidification and melting phenomena of molten slag and conditioning materials, calculates the slag hanging thickness on the furnace wall; and establishes the functional relationship between the slag hanging thickness of the 6500mm diameter rock wool electric furnace and the cooling water volume.

[0031] The present invention also discloses an electronic device, which includes:

[0032] 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, and the computer program is executed by the at least one processor so that the at least one processor can execute the numerical simulation calculation method for the slag hanging thickness of thin-wall refractories of a 6500mm diameter rock wool electric furnace.

[0033] The present invention also discloses a computer-readable storage medium, which stores computer instructions for causing a processor to execute the numerical simulation calculation method for the slag hanging thickness of thin-wall refractories of a 6500mm diameter rock wool electric furnace when executed.

[0034] The present invention also discloses a computer program product, which includes a computer program that realizes the numerical simulation calculation method for the slag hanging thickness of thin-wall refractories of a 6500mm diameter rock wool electric furnace when executed by a processor.

[0035] A numerical simulation calculation method, device, equipment, medium, and product for the slag attachment thickness of thin-walled refractories used in a 6500mm diameter rock wool electric furnace provided by the present invention can calculate the slag attachment layer thickness data of the furnace wall of the rock wool electric furnace through numerical simulation means according to parameters such as the furnace type parameters of the rock wool electric furnace, the refractory parameters of the furnace wall, the temperature difference between the inlet and outlet water, and the cooling water volume, and provide a theoretical calculation equation for the slag attachment thickness of the furnace wall of the rock wool electric furnace. The present invention realizes adjusting the cooling water volume to control the formation of a suitable slag attachment layer on the furnace wall of the electric furnace, which helps to extend the service life of the refractories of the rock wool electric furnace. A quantitative relationship function equation between the slag attachment thickness δ and Q of the furnace wall of the rock wool electric furnace within the range of structural parameters is given. It is more applicable to the production operation of the rock wool electric furnace than the existing empirical qualitative judgment, with higher accuracy, and has the advantages of simple adjustment method, convenient operation, low cost, and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic flow chart of the numerical simulation calculation method for the slag attachment thickness of thin-walled refractories of the present invention;

[0037] Figure 2 is a schematic diagram showing the functional relationship between the slag attachment thickness and the cooling water volume of a 6500mm diameter rock wool electric furnace established in the numerical simulation calculation of the slag attachment thickness of thin-walled refractories of the present invention;

[0038] Figure 3 is a schematic structural framework diagram of the numerical simulation calculation device for the slag attachment thickness of thin-walled refractories of the present invention;

[0039] Figure 4 is a schematic structural framework diagram of the electronic device of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] In order to better understand the above technical solutions of the present invention, the technical solutions of the present invention will be further described below with reference to the drawings and embodiments.

[0041] Combined with Figure 1 as shown, the present invention provides a numerical simulation calculation method for the slag attachment thickness of thin-walled refractories used in a 6500mm diameter rock wool electric furnace;

[0042] Obtain the physical property parameters of the melt and refractories of a 6500mm diameter rock wool electric furnace, including a density of 2.5 - 2.8 g·cm -3 ; a specific heat of 1200 - 1500 j·kg -1 ·K -1 ; a viscosity of 0.2 - 0.8 Pa·s; a thermal conductivity of 0.3 - 0.5 W·m -1 ·K -1 ; a conductivity of 1.5 - 20 S·m -1 ; a solid-liquid phase temperature of 1453 - 1513 K.

[0043] The heating power of the 6500mm diameter rock wool electric furnace is 4500 - 5000kw, and the cooling water temperature difference is 8 - 15K.

[0044] The refractory material of the furnace wall of the 6500mm diameter rock wool electric furnace is silicon carbide ramming material, with a thickness of 50mm and a thermal conductivity of 15 - 20W·m -1 ·K -1 。

[0045] Based on the furnace type structure parameters of the 6500mm diameter rock wool electric furnace, through radial geometric scaling, a three-dimensional physical model of the electric furnace is established and meshed, including molten slag, electrodes, hot metal and refractory materials of each part. The meshing is carried out by combining structured and unstructured meshes. The total number of meshes is about 2.4 million. The mesh in the slag discharge port area is refined. Since only heat transfer is considered in the solid area, the mesh in the refractory area is as sparse as possible to reduce the calculation amount.

[0046] Solve the Maxwell equations to obtain the relevant parameters of the electromagnetic field, calculate the electromagnetic field equations, and obtain the time-averaged Joule heat and electromagnetic force data.

[0047] Take the obtained time-averaged Joule heat and electromagnetic force data as source terms and add them to the mass conservation equation, momentum conservation equation and energy conservation equation to realize the coupling of the electromagnetic field, flow field and temperature field.

[0048] Use the enthalpy-porous medium method to describe the solidification and melting phenomena of molten slag and conditioning materials, and calculate the thickness of the slag adhering to the furnace wall.

[0049] Based on the thickness of the slag adhering to the furnace wall and combined with the cooling water volume parameter of the furnace wall of the electric furnace, establish a functional relationship between the slag adhering thickness δ and the cooling water volume Q of the 6500mm diameter rock wool electric furnace, that is: δ = -0.02*Q 2 +10.36*Q - 1235.9. The thickness of the slag adhering to the furnace wall can be calculated according to this formula.

[0050] When the cooling water volume of the furnace wall is 230m 3 / h, a complete slag layer can be formed on the furnace wall of the electric furnace, and the average slag layer thickness is 89mm;

[0051] When the cooling water volume of the furnace wall is 220m 3 / h, a complete slag layer can be formed on the furnace wall of the electric furnace, and the average slag layer thickness is 75mm;

[0052] When the cooling water volume of the furnace wall is 210m 3 / h, a complete slag layer can be formed on the furnace wall of the electric furnace, and the average slag layer thickness is 58mm;

[0053] When the cooling water volume of the furnace wall is 200m 3 / h, a complete slag layer can be formed on the furnace wall of the electric furnace, and the average slag layer thickness is 36mm.

[0054] When the cooling water volume Q value is 190 m 3 / h, the average thickness of the slag adhering to the furnace wall is only 10 mm, and there is no slag adhering locally. Therefore, in order to obtain a complete and stable slag layer on the furnace wall, the cooling water volume Q value of the furnace wall needs to be greater than 190 m 3 / h.

[0055] Combined with Figure 3 as shown, the present invention also discloses a device for calculating the cooling water volume of a condensation furnace lining, including:

[0056] A model establishment unit 510, which is used to establish a three-dimensional physical model of the electric furnace and divide the grid.

[0057] A solution strategy setting unit 520, which solves the Maxwell equations to obtain electromagnetic field related parameters, calculates the electromagnetic field equations, and obtains time-averaged joule heat and electromagnetic force data.

[0058] A model application unit 530, which takes the obtained time-averaged joule heat and electromagnetic force data as source terms, adds them to the mass conservation equation, momentum conservation equation and energy conservation equation, and realizes the coupling of the electromagnetic field, flow field and temperature field. The solidification and melting phenomena of the slag and the conditioning material are described by the enthalpy porous medium method, and the thickness of the slag adhering to the furnace wall is calculated. Based on the thickness of the slag adhering to the furnace wall, combined with the cooling water volume parameter of the electric furnace wall, a functional relationship between the slag adhering thickness δ and the cooling water volume Q of the 6500 mm diameter rock wool electric furnace is established, that is: δ = -0.02 * Q 2 + 10.36 * Q - 1235.9, and the thickness of the slag adhering to the furnace wall can be calculated according to this formula.

[0059] The present invention also discloses an electronic device. The electronic device is 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 can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples and are not intended to limit the implementation of the present invention described herein and / or claimed.

[0060] Combined with Figure 4As shown, the electronic device 10 includes at least one processor 11 and a memory communicatively connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc. Among them, the memory stores a computer program executable by the at least one processor. The processor 11 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. The input / output (I / O) interface 15 is also connected to the bus 14.

[0061] Multiple components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disc, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0062] The processor 11 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the numerical simulation calculation method for the slag thickness of the thin-wall refractory in a 6500mm diameter rock wool electric furnace.

[0063] In some embodiments, the numerical simulation calculation method for the slag thickness of the thin-wall refractory in a 6500mm diameter rock wool electric furnace can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the multi-energy microgrid technical and economic evaluation method described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the numerical simulation calculation method for the slag thickness of the thin-wall refractory in a 6500mm diameter rock wool electric furnace by any other appropriate means (for example, by means of firmware).

[0064] The various embodiments of the systems and techniques described above in this specification can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems-on-chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that receives data and instructions from, and transmits data and instructions to, a storage system, at least one input device, and at least one output device.

[0065] The computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The computer programs can be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.

[0066] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on 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, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0067] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and a pointing device (e.g., a mouse or a trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the 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 acoustic input, voice input, or tactile input).

[0068] The systems and techniques described herein can be implemented in a computing system including backend components (e.g., as a data server), or a computing system including middleware components (e.g., an application server), or a computing system including frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system including any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0069] A computing system can include a client and a server. The client and the server are generally far from each other and usually interact through a communication network. The relationship between the client and the server is generated 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 a cloud host, which is a host product in the cloud computing service system and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0070] Example 1

[0071] The heating power of the rock wool electric furnace is 4600 kw, the refractory material for the furnace wall is selected as silicon carbide ramming mass, the cooling water volume is 205 m 3 / h, the cooling water temperature difference is 8 K, the solidus temperature of the melt is 1453 K, the liquidus temperature is 1513 K. Using the quadratic function relationship provided in this Example 1: δ = -0.02*Q 2 +10.36*Q - 1235.9, the slag thickness on the furnace wall is calculated to be 47 mm, which is thicker than the slag thickness of 20 - 30 mm of a conventional cold charge electric furnace, and can better protect the refractory material of the furnace wall.

[0072] Example 2

[0073] The heating power of the rock wool electric furnace is 4600 kw. The refractory material for the furnace wall is selected as silicon carbide ramming mass. The cooling water volume is 215 m 3 / h, the cooling water temperature difference is 8 K, the solidus temperature of the melt is 1453 K, and the liquidus temperature is 1513 K. Using the quadratic function relationship provided in Example 2: δ = -0.02*Q 2 +10.36*Q - 1235.9, the slag thickness on the furnace wall is calculated to be 67 mm, which is thicker than the slag thickness of 20 - 30 mm of the conventional cold charge electric furnace, and can better protect the refractory material of the furnace wall.

[0074] Example 3

[0075] The heating power of the rock wool electric furnace is 4600 kw. The refractory material for the furnace wall is selected as silicon carbide ramming mass. The cooling water volume is 225 m 3 / h, the cooling water temperature difference is 8 K, the solidus temperature of the melt is 1453 K, and the liquidus temperature is 1513 K. Using the quadratic function relationship provided in Example 3: δ = -0.02*Q 2 +10.36*Q - 1235.9, the slag thickness on the furnace wall is calculated to be 83 mm, which is thicker than the slag thickness of 20 - 30 mm of the conventional cold charge electric furnace, and can better protect the refractory material of the furnace wall.

[0076] Example 4

[0077] The heating power of the rock wool electric furnace is 4600 kw. The refractory material for the furnace wall is selected as silicon carbide ramming mass. The cooling water volume is 235 m 3 / h, the cooling water temperature difference is 8 K, the solidus temperature of the melt is 1453 K, and the liquidus temperature is 1513 K. Using the quadratic function relationship provided in Example 4: δ = -0.02*Q 2 +10.36*Q - 1235.9, the slag thickness on the furnace wall is calculated to be 67 mm, which is thicker than the slag thickness of 20 - 30 mm of the conventional cold charge electric furnace, and can better protect the refractory material of the furnace wall.

[0078] Example 5

[0079] The heating power of the rock wool electric furnace is 4600 kw. The refractory material for the furnace wall is selected as silicon carbide ramming mass. The cooling water temperature difference is 8 K, the solidus temperature of the melt is 1453 K, and the liquidus temperature is 1513 K. Control the slag thickness on the refractory material of the rock wool electric furnace to be more than 40 mm. According to the function relationship formula between the slag thickness δ and the cooling water volume Q of the rock wool electric furnace provided in Example 5: δ = -0.02*Q 2 +10.36*Q - 1235.9, the Q value of the cooling water volume of the furnace wall of the rock wool electric furnace is calculated to reach 202 m 3 / h or more.

[0080] Example 6

[0081] The heating power of the rock wool electric furnace is 4600 kw. The refractory material for the furnace wall is selected as silicon carbide ramming material. The cooling water temperature difference is 8K, the solidus temperature of the melt is 1453K, and the liquidus temperature is 1513K. Control the refractory material of the furnace wall of the rock wool electric furnace to form a slag hanging thickness of more than 60 mm. According to the function relationship formula between the slag hanging thickness δ and the cooling water volume Q provided in this Example 6: δ=-0.02*Q 2 +10.36*Q - 1235.9, it is calculated that the value of the cooling water volume Q of the furnace wall of the rock wool electric furnace needs to reach 212 m 3 / h or more.

[0082] Example 7

[0083] The heating power of the rock wool electric furnace is 4600 kw. The refractory material for the furnace wall is selected as silicon carbide ramming material. The cooling water temperature difference is 8K, the solidus temperature of the melt is 1453K, and the liquidus temperature is 1513K. Control the refractory material of the furnace wall of the rock wool electric furnace to form a slag hanging thickness of more than 80 mm. According to the function relationship formula between the slag hanging thickness δ and the cooling water volume Q provided in this Example 7: δ=-0.02*Q 2 +10.36*Q - 1235.9, it is calculated that the value of the cooling water volume Q of the furnace wall of the rock wool electric furnace needs to reach 224 m 3 / h or more.

[0084] Those of ordinary skill in the art in this technical field should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as it is within the scope of the essential spirit of the present invention, the changes and modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A numerical simulation calculation method for the slag thickness of thin-walled refractory materials for a 6500mm diameter rock wool electric furnace, characterized in that: Obtain the physical properties of the melt and refractory materials of a 6500mm diameter rock wool electric furnace; Based on the furnace structure parameters of the 6500 mm diameter rock wool electric furnace, a three-dimensional physical model of the electric furnace is established and a grid is divided; Solve Maxwell's equations to obtain electromagnetic field related parameters, calculate the electromagnetic field equations, and obtain Joule heat and electromagnetic force; Using the mass conservation equation, momentum conservation equation and energy conservation equation, the coupling of electromagnetic field, flow field and temperature field is realized; The enthalpy porous medium method is used to describe the solidification and melting phenomenon of slag and quenched and tempered materials, and the thickness of slag hanging on the furnace wall is calculated; A functional relationship between the slag thickness and the cooling water volume of the 6500 mm diameter rock wool electric furnace is established.

2. The numerical simulation calculation method for the slag thickness of thin-walled refractory materials for a 6500 mm diameter rock wool electric furnace according to claim 1 is characterized in that: The physical property parameters include: Density: 2.5-2.8 g cm -3 ; Specific heat is 1200~1500j·kg -1 ·K -1 ; Viscosity: 0.2-0.8 Pa·s; Thermal conductivity: 0.3~0.5W·m -1 ·K -1 ; Conductivity: 1.5~20S·m -1 ; The solid-liquid phase temperature is 1453~1513K.

3. The numerical simulation calculation method for the slag thickness of thin-walled refractory materials for a 6500 mm diameter rock wool electric furnace according to claim 1 is characterized in that: The heating power of the 6500mm diameter rock wool electric furnace is 4500-5000kw, and the cooling water temperature difference is 8-15K.

4. The numerical simulation calculation method for the slag thickness of thin-walled refractory materials for a 6500 mm diameter rock wool electric furnace according to claim 1 is characterized in that: The 6500mm diameter rock wool electric furnace wall refractory material is made of silicon carbon ramming material with a thickness of 50mm and a thermal conductivity of 15-20W·m -1 ·K -1 .

5. The numerical simulation calculation method for the slag thickness of thin-walled refractory materials for a 6500 mm diameter rock wool electric furnace according to claim 1 is characterized in that: The furnace structure parameters of the 6500mm diameter rock wool electric furnace include slag, electrodes, molten iron and various refractory materials; The computational domain is meshed by combining structured and unstructured grids, and the mesh in the slag outlet area is encrypted.

6. The numerical simulation calculation method for the slag thickness of thin-walled refractory materials for a 6500 mm diameter rock wool electric furnace according to claim 1 is characterized in that: The functional relationship between the slag thickness δ and the cooling water volume Q of the 6500mm diameter rock wool electric furnace is as follows: δ=-0.02*Q 2 +10.36*Q-1235.9。 7. A numerical simulation calculation device for slag thickness of thin-walled refractory materials, characterized in that: include: Model building unit, used to build a three-dimensional physical model of the electric furnace and divide the grid; A solution strategy setting unit is used to solve Maxwell's equations to obtain electromagnetic field related parameters, calculate the electromagnetic field equations, and obtain Joule heat and electromagnetic force; The model application unit uses the mass conservation equation, momentum conservation equation and energy conservation equation to realize the coupling of electromagnetic field, flow field and temperature field; uses the enthalpy porous medium method to describe the solidification and melting phenomenon of slag and tempering material, and calculates the slag thickness on the furnace wall; and establishes the functional relationship between the slag thickness and cooling water volume of the 6500mm diameter rock wool electric furnace.

8. An electronic device, characterized in that: The electronic device comprises: 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, and the computer program is executed by the at least one processor so that the at least one processor can execute the numerical simulation calculation method for the slag thickness of thin-walled refractory materials for a 6500mm diameter rock wool electric furnace as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the numerical simulation calculation method for the slag thickness of thin-walled refractory materials for a 6500mm diameter rock wool electric furnace as described in any one of claims 1-6 when executed.

10. A computer program product, characterized in that: The computer program product comprises a computer program, which, when executed by a processor, implements a numerical simulation calculation method for the slag thickness of thin-walled refractory materials for a 6500 mm diameter rock wool electric furnace according to any one of claims 1 to 6.

Images