High-vanadium-iron alloy cake, preparation method thereof and alloy component analysis method

Abstract

The invention relates to the technical field of vanadium smelting, and discloses a high-vanadium-iron alloy cake, a preparation method thereof and an alloy component analysis method.The preparation method comprises the steps that the thickness and the diameter of the alloy cake are determined based on the weight of a target alloy cake and the size of a furnace body; preparing a bedding material and performing bedding, wherein the bedding material comprises an arc striking material, a bedding main material and a bedding metal type cold material; after electrifying to strike an arc, smelting in a thin material layer form, dividing a main mixture into N parts, sequentially adding the N parts, and adding non-bottoming metal type cold materials in batches in the process of adding the main mixture; and then cooling is conducted, and a high-vanadium-iron alloy cake is obtained. According to the method, the relationship between the pole circle and the diameter of the alloy cake is properly matched, the material feeding mode is changed to uniformly distribute heat and improve the furnace condition, and the problems that the yield and the yield are reduced and acquisition of alloy component information is severely lagged due to the fact that the high-vanadium-iron alloy cake is difficult to crush can be effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vanadium smelting, and in particular to a high-vanadium ferroalloy cake, a preparation method thereof, and an alloy composition analysis method. BACKGROUND

[0002] High-vanadium ferroalloy is a key alloy raw material for manufacturing high-end special steel such as tool steel, marine steel, and wind power steel. Its traditional smelting process usually includes multiple links such as batching, material distribution, power-on smelting, refining, cooling, and crushing. Among them, the crushing of the vanadium ferroalloy cake is a key procedure that connects the previous and the next procedures, and the particle size of the crushed alloy directly affects the subsequent composition detection, packaging, and use efficiency.

[0003] At present, the mainstream at home and abroad smelts high-vanadium ferroalloy by using a straight cylinder furnace. In order to improve the single-furnace production capacity, the industry generally adopts the method of adding vanadium trioxide in batches, so that the weight of a single alloy cake can reach nearly 5 tons. However, with the increase of the weight of the alloy cake, if the process control is not proper, the alloy cake is prone to become coarse, high in hardness, and poor in toughness, thereby becoming extremely difficult to crush. At present, some technologies have been tried in the field. For example, application No. CN2023114114930.7 discloses a method for improving the fine grinding performance of vanadium ferroalloy by setting a specific furnace charge structure and two-step forced cooling, but the method does not involve how to obtain an easily crushed alloy cake. Application Nos. CN201910716220.7 and CN201410017801.9 mainly focus on improving the crystalline structure of the alloy by slow cooling through heat preservation during the pouring process. In addition, application No. CN202510731270.8 discloses a method for prolonging the service life of equipment by optimizing the coarse crushing operation and contact cooling, which still fundamentally aims to reduce the difficulty of subsequent crushing. In summary, the existing technologies mainly focus on adjusting after the alloy is solidified and formed, and fail to solve the problem of high intrinsic hardness and difficult crushing of the alloy cake from the root.

[0004] Therefore, there is a need for improvement in the preparation method of high-vanadium ferroalloy cake in the prior art. SUMMARY

[0005] In view of the above, the purpose of the embodiments of the present application is to provide a high-vanadium ferroalloy cake, a preparation method thereof, and an alloy composition analysis method. By moderately matching the relationship between the polar core circle and the diameter of the alloy cake, the method changes the material feeding mode to uniformly distribute heat and improve the furnace condition, which can effectively solve the problem of low yield and serious lag in obtaining alloy composition information caused by the difficulty in crushing the high-vanadium ferroalloy cake.

[0006] Based on the above purpose, the embodiments of the present application provide a preparation method of a high-vanadium ferroalloy cake, which includes the following steps: S1 determining the thickness and diameter of the alloy cake based on the target alloy cake weight and the furnace size; S2 configures and lays the bottom material, the bottom material including an arc starting material, a bottom laying main material and a bottom laying metal cold material; S3 after electrically starting the arc, smelting is performed in the form of a thin material layer, the main mixed material is divided into N parts and added in turn, and in the process of adding the main mixed material, the non-bottom laying metal cold material is added in batches, wherein the theoretical product MV / MFe ratio in the first to N-2 parts of the main mixed material is 3.7~3.9, and the theoretical product MV / MFe ratio in the last two parts of the main mixed material is 3.9~4.1; S4 refining the melt obtained in S3, and then cooling to obtain a high-vanadium ferroalloy cake.

[0007] In some embodiments, The maximum thickness of the alloy cake is:

[0008] The longest diameter of the alloy cake is: =

[0009] wherein, is the maximum thickness of the alloy cake, is the weight of the alloy cake, is the diameter of the furnace cylinder, is the diameter of the core circle of the three-phase graphite electrode, and π is 3.14, is the true density of the alloy cake.

[0010] In some embodiments, the bottom laying main material and the main mixed material include flaky vanadium trioxide, at least a part of the main mixed material contains flaky vanadium, and in the total furnace charge throughout the smelting process, the metal cold material: flaky vanadium trioxide: flaky vanadium = (1.5~2.5): (2~8): 1.

[0011] In some embodiments, the mass ratio of the bottom laying metal cold material to the non-bottom laying metal cold material is 1: (2~4).

[0012] In some embodiments, the diameter of the alloy cake is designed to be 1.8 to 2.0 times the diameter of the core circle.

[0013] In some embodiments, in the bottom material, the mass ratio of the arc starting material: bottom laying main material: bottom laying metal cold material is 1: (4~5): 1.

[0014] In some embodiments, in the theoretical reaction product of the arc starting material, the molar ratio MV / MFe of the oxides of vanadium to the oxides of iron is 3.5~3.7.

[0015] In some embodiments, the main mixture is divided into N parts, where 3 ≤ N ≤ 6, and the non-bottom-layer metal cold material added during the smelting process is divided into M parts. Non-bottom-layer metal cold material is added to the first M parts of the main mixture of N parts, where 1 ≤ M ≤ N.

[0016] In another aspect, the present invention provides a high-vanadium iron alloy cake, which is prepared by the above method.

[0017] In another aspect, the present invention provides a method for rapidly obtaining the composition of ferrovanadium alloy, wherein an easily breakable high-ferrovanadium alloy cake is prepared using the above method, the alloy cake is broken, and the broken alloy particles are sampled and analyzed for composition.

[0018] The present invention has at least the following beneficial technical effects: (1) By setting a reasonable furnace charge structure, the crystallization effect caused by the genetic effect is reduced, and the alloy smelting yield is increased by 0.3 to 1.5 percentage points.

[0019] (2) It can stably produce easily breakable high-vanadium ferrophosphate products, and the life of the jaw crusher liner is extended by more than 60%, meeting the industrial production requirements of high yield and high production rate; it can also obtain alloy composition information efficiently, and the time for obtaining alloy composition information is shortened by more than 50%. It improves the production efficiency, quality stability and data statistical feedback adjustment efficiency of high-vanadium ferrophosphate, which helps to improve the market competitiveness of high-vanadium ferrophosphate products.

[0020] (3) This method can stably produce easily broken high vanadium iron products, meet the industrial production requirements of high yield and high production rate, and can also obtain alloy composition information in a high-efficiency manner, improve the production efficiency and data statistical analysis capabilities of high vanadium iron, help improve the quality and market competitiveness of high vanadium iron products, and has broad market application prospects. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram illustrating an embodiment of the method for preparing high-vanadium iron alloy cakes provided by the present invention; Figure 2 This invention provides a spatiotemporal time sequence overlay diagram of a straight-tube furnace during the smelting process. Figure 3 This is a schematic diagram of an embodiment of the alloy disc design provided by the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to specific examples and the accompanying drawings.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are for ease of description only, and should not be construed as limiting the technical solution.

[0025] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion; the terms "first," "second," etc., used in the specification, claims, and accompanying drawings are used to distinguish different objects, not to describe a particular order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0026] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] To address the issue of long alloy composition acquisition time, the focus is on extending the lifespan of jaw crusher liners, with the key being the control of the crushing performance of ferrovanadium alloys. Ferrovanadium smelting primarily revolves around "heating, heat absorption, heat storage, and heat release." Currently, there is limited literature on controlling the crushing performance of ferrovanadium alloys, mainly focusing on temperature and cooling control after obtaining the alloy cake, such as controlling the solidification and cooling stages. There are no reports on using refined control of upstream processes to prepare easily crushable high-vanadium ferrovanadium alloys to solve the problem of excessively long alloy composition acquisition time.

[0028] like Figure 1 The figure shows a method for preparing a high-vanadium iron alloy cake provided by the present invention, combined with... Figure 2 The above is a spatiotemporal time-series overlay diagram of the smelting process in a straight-tube furnace. The method specifically includes the following steps: S1 determines the thickness and diameter of the alloy cake based on the target alloy cake weight and furnace dimensions; S2 is configured with base material and the base material is laid. The base material includes arc-starting material, base material, and base metal cold material. After S3 is energized and the arc is ignited, smelting is carried out in the form of a thin material layer. The main mixture is divided into N parts and added sequentially. During the addition of the main mixture, non-bottom-layer metal cold material is added in batches. The theoretical product MV / MFe ratio in the first to N-2 parts of the main mixture is controlled to be 3.7~3.9, and the theoretical product MV / MFe ratio in the last two parts of the main mixture is 3.9~4.1. S4 refines the melt obtained from S3, and then cools it to obtain a high-vanadium iron alloy cake.

[0029] Furthermore, such as Figure 2 The three stages shown include the initial arc-ignition stage, the batch feeding stage, and the refining stage. Each stage involves aluminum reduction, and those skilled in the art can adjust the aluminum ratio according to actual needs.

[0030] Furthermore, such as Figure 3 The image shown is a reference diagram for alloy disc design. The furnace cylinder dimensions are designed based on the target alloy disc weight, and the maximum thickness of the alloy disc is:

[0031] The longest diameter of the alloy disc is: =

[0032] in, The maximum thickness of the alloy disc. The weight of the alloy disc. The diameter of the furnace cylinder. Π is the diameter of the central circle of the three-phase graphite electrode, and is taken as 3.14. The true density of the alloy disc.

[0033] Furthermore, the base charge and main mix include flaky vanadium trioxide, with at least a portion of the main mix containing flaky vanadium. Flaky vanadium trioxide is the primary vanadium source in this smelting process, mainly contained in the base charge and main mix. Flaky vanadium is an auxiliary vanadium source / refining material, contained only in the final portion of the main mix, used to achieve gradient control of chemical composition. In the total furnace charge throughout the smelting process, the ratio of metallic cold charge: flaky vanadium trioxide: flaky vanadium = (1.5~2.5):(2~8):1.

[0034] Furthermore, the mass ratio of the base metal cold material to the non-base metal cold material is 1:(2~4).

[0035] Furthermore, the diameter of the alloy disc is designed to be 1.8 to 2.0 times the diameter of the central circle.

[0036] Furthermore, in the bottom layer material, the mass ratio of arc-initiating material: bottom main material: bottom metal-type cold material is 1:(4~5):1. Specifically, the bottom layer material consists of three layers from bottom to top. The first layer is the arc-initiating material, usually aluminum granules + lime. Its function is to provide the initial conductive path, initiate the electric arc, and start the smelting process. The second layer is the bottom main material, mainly composed of vanadium trioxide and aluminum granules. This is the first wave of main reactants, providing a large amount of vanadium source. The third layer is the bottom metal-type cold material I, mainly composed of recovered vanadium-iron fine powder or residual alloy. Its function is to absorb excess reaction heat, prevent overheating of the furnace bottom, and adjust the initial alloy composition.

[0037] Furthermore, in the theoretical reaction products of the arc-initiating material, the molar ratio of vanadium oxide to iron oxide, MV / MFe, is 3.5~3.7.

[0038] Furthermore, the main mixture is divided into N parts, where 3≤N≤6. The non-bottom-layer metal cold material added during the smelting process is divided into M parts. Non-bottom-layer metal cold material is added to the first M parts of the main mixture of N parts, where 1≤M≤N.

[0039] This method can stably produce easily breakable high-vanadium ferrophosphate products, meeting the industrial production requirements of high yield and high output. It can also efficiently obtain alloy composition information, improving the production efficiency and data statistical analysis capabilities of high-vanadium ferrophosphate. This helps to improve the quality and market competitiveness of high-vanadium ferrophosphate products and has broad market application prospects.

[0040] In another aspect, the present invention provides a high-vanadium iron alloy cake, which is prepared by the above method.

[0041] In another aspect, the present invention provides a method for rapidly obtaining the composition of ferrovanadium alloy, wherein an easily breakable high-ferrovanadium alloy cake is prepared using the above method, the alloy cake is broken, and the broken alloy particles are sampled and analyzed for composition.

[0042] The present invention will be further explained below with reference to specific embodiments.

[0043] Example 1 The target alloy disc weighs 4.5t, and the true density of FeV80 is 6.22g / cm³. 3 The furnace cylinder has an inner diameter of 1600mm and a center circle diameter of 1050mm. The maximum thickness of the alloy disc is designed to be... =324mm And the longest diameter of the alloy disc = =1890mm The roundness of the alloy disc surface is limited to 0.93. A layer of main material is pre-laid at the furnace bottom, followed by bottom-layer metal-type cold charge I (residual alloy) and arc-starting material; the mass ratio of arc-starting material: bottom main material: bottom-layer metal-type cold charge I (residual alloy) is 1:4:1, and the theoretical product MV / MFe ratio in the arc-starting material is 3.5. The total furnace charge has a metal-type cold charge: flake vanadium trioxide: flake vanadium ratio of 1.5:2:1. The ratio of bottom-layer metal-type cold charge I to non-bottom-layer metal-type cold charge II is 1:2. After ignition and arc starting, a thin-layer vanadium trioxide main mixed charge structure is adopted. The mixed charge is prepared according to the materials required for FeV80 and divided into 6 parts. The MV / MFe ratio in parts 1-4 is 3.7, and the theoretical product MV / MFe ratio in the last two parts is 3.9. The material was fed and smelted using a batch feeding method. The non-bottom-lay metal cold material II was divided into two parts, which were added to the first two parts of the sixth batch of mixture. Following the smelting and refining processes described in "A method for controlling narrow compositional fluctuations of main elements in high-vanadium iron and vanadium iron alloy (application number: CN202410635160.7)," the material was smelted by electric current, then refined, cooled, dismantled from the furnace, and water-cooled.

[0044] Example 2 The target alloy disc weighs 4.7t, and the true density of FeV80 is 6.22g / cm³. 3 The furnace cylinder has an inner diameter of 1700mm and a center circle diameter of 1040mm. The maximum thickness of the alloy disc is designed to be... =266.46mm And the longest diameter of the alloy disc = =1976mm The roundness of the alloy disc surface is limited to 0.99. A layer of main material is pre-laid at the furnace bottom, followed by bottom-layer metal mold cold charge I (residual alloy) and arc-starting material; the mass ratio of arc-starting material: bottom main material: bottom-layer metal mold cold charge I (residual alloy) is 1:5:1, and the theoretical MV / MFe ratio in the arc-starting material is 3.7. The total furnace charge has a metal mold cold charge: flake vanadium trioxide: flake vanadium ratio of 2.5:8:1. The ratio of bottom-layer metal mold cold charge I to non-bottom-layer metal mold cold charge II is 1:4. After ignition and arc starting, a thin-layer vanadium trioxide main mixed charge structure is adopted. The mixed charge is prepared according to the materials required for FeV80 and divided into 3 parts. The theoretical MV / MFe ratio in the first part is 3.9, and the theoretical MV / MFe ratio in the last two parts is 4.1. The material is fed and smelted by electricity in batches. The non-bottom-lay metal cold material II is divided into 1 part and added to the first part of the 3rd mixture. After smelting according to the electricity and refining system described in "A method for controlling narrow compositional fluctuations of main elements in high vanadium iron and vanadium iron alloy (application number: CN202410635160.7)", the material is refined, cooled, dismantled, and water-cooled.

[0045] Example 3 The target alloy disc weighs 4.6t, and the true density of FeV80 is 6.22g / cm³. 3 The furnace cylinder has an inner diameter of 1650mm and a center circle diameter of 1060mm. The maximum thickness of the alloy disc is designed to be... =242.2mm And the longest diameter of the alloy disc = =2120mm The roundness of the alloy disc surface is limited to 0.96. A layer of main material is pre-laid at the furnace bottom, followed by bottom-layer metal mold cold charge I (residual alloy) and arc-starting material; the mass ratio of arc-starting material: bottom main material: bottom metal mold cold charge I is 1:4.5:1, and the theoretical MV / MFe ratio in the arc-starting material is 3.6. The total furnace charge has a metal mold cold charge: flake vanadium trioxide: flake vanadium = 2.0:5:1. The ratio of bottom metal mold cold charge I to non-bottom metal mold cold charge II is 1:3. After ignition and arc starting, a thin-layer vanadium trioxide main mixed charge structure is adopted. The mixed charge is prepared according to the materials required for FeV80 and divided into 6 parts. The theoretical MV / MFe ratio in the first to fourth parts is 3.8, and the theoretical MV / MFe ratio in the last two parts is 4.0. The material was fed and smelted using a batch feeding method. The non-bottom-lay metal cold material II was divided into 6 portions, and each portion was added to the mixture. After smelting according to the energizing and refining system described in "A method for controlling narrow compositional fluctuations of main elements in high-vanadium iron and vanadium iron alloy (application number: CN202410635160.7)," the mixture was refined, cooled, dismantled from the furnace, and water-cooled.

[0046] Comparative Example 1 The target alloy disc weighs 4.5t, and the true density of FeV80 is 6.22g / cm³. 3 The furnace cylinder has an inner diameter of 1600mm and a center circle diameter of 1050mm. The maximum thickness of the alloy disc is designed to be... =324mm And the longest diameter of the alloy disc = =1890mm The roundness of the alloy cake surface is limited to 0.93. A layer of main material is pre-laid at the furnace bottom, followed by bottom-layer metal-type cold charge I (residual alloy) and arc-starting material; the mass ratio of arc-starting material: bottom main material: bottom-layer metal-type cold charge I (residual alloy) is 1:4:1, and the theoretical product MV / MFe ratio in the arc-starting material is 3.5. The total furnace charge has a metal-type cold charge: flake vanadium trioxide: flake vanadium ratio of 1.5:2:1. The ratio of bottom-layer metal-type cold charge I to non-bottom-layer metal-type cold charge II is 1:0. After ignition and arc starting, a thin-layer vanadium trioxide main mixed charge structure is adopted. The mixed charge is prepared according to the materials required for FeV80 and divided into 6 parts. The MV / MFe ratio in parts 1-4 is 3.7, and the theoretical product MV / MFe ratio in the last two parts is 3.9. Charging and smelting are carried out in batches. According to the electro-energizing and refining process described in "A method for controlling narrow compositional fluctuations of main elements in high-vanadium iron and vanadium-iron alloy (application number: CN202410635160.7)," after electro-energizing smelting, refining, cooling, furnace dismantling, and water cooling are carried out.

[0047] Comparative Example 2 The target alloy cake weighs 4.7t, and its shape has no specific constraints. A layer of main material is pre-laid at the furnace bottom, followed by bottom-layer metal-type cold charge I (residual alloy) and arc-starting material; the mass ratio of arc-starting material: bottom main material: bottom-layer metal-type cold charge I (residual alloy) is 1:5:1, and the theoretical MV / MFe ratio in the arc-starting material is 3.7. The total furnace charge has a metal-type cold charge: flake vanadium trioxide: flake vanadium ratio of 2.5:8:1. The ratio of bottom-layer metal-type cold charge I to non-bottom-layer metal-type cold charge II is 1:4. After ignition and arc starting, a thin-layer vanadium trioxide main mixed charge structure is adopted. The mixed charge is prepared according to the required materials for FeV80 and divided into 3 parts. The theoretical MV / MFe ratio in the first part is 3.9, and the theoretical MV / MFe ratio in the last two parts is 4.1. The material is fed and smelted by electricity in batches. The non-bottom-lay metal cold material II is divided into 1 part and added to the first part of the 3rd mixture. After smelting according to the electricity and refining system described in "A method for controlling narrow compositional fluctuations of main elements in high vanadium iron and vanadium iron alloy (application number: CN202410635160.7)", the material is refined, cooled, dismantled, and water-cooled.

[0048] Comparative Example 3 The target alloy cake weighs 4.5t, and its shape is not subject to specific constraints. A layer of main material is pre-laid at the furnace bottom, followed by bottom-layer metal-type cold charge I (residual alloy) and arc-starting material; the mass ratio of arc-starting material: bottom main material: bottom-layer metal-type cold charge I (residual alloy) is 1:4:1, and the theoretical MV / MFe ratio in the arc-starting material is 3.7. The total furnace charge has a metal-type cold charge: flake vanadium trioxide: flake vanadium ratio of 1.5:2:1. The ratio of bottom-layer metal-type cold charge I to non-bottom-layer metal-type cold charge II is 1:0. After ignition and arc starting, a thin-layer vanadium trioxide main mixed charge structure is adopted. The mixed charge is prepared according to the materials required for FeV80 and divided into 6 parts. The theoretical MV / MFe ratio in the first to fourth parts is 3.8, and the theoretical MV / MFe ratio in the last two parts is 4.0. Charging and smelting are carried out in batches. According to the electro-energizing and refining process described in "A method for controlling narrow compositional fluctuations of main elements in high-vanadium iron and vanadium-iron alloy (application number: CN202410635160.7)," after electro-energizing smelting, refining, cooling, furnace dismantling, and water cooling are carried out.

[0049] This invention provides a method for rapidly obtaining the composition of ferrovanadium alloys. By starting with root cause analysis, it obtains easily breakable high-vanadium-iron alloys and their preparation schemes. It can stably produce easily breakable high-vanadium-iron products, meeting the industrial production requirements of high yield and high production rate. It can efficiently obtain alloy composition information, improve the production efficiency, quality stability, and data statistical feedback adjustment efficiency of high-vanadium-iron, and help improve the market competitiveness of high-vanadium-iron products.

[0050] Table 1. Test Results

[0051] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0052] It should be understood that, as used herein, the singular form “a” is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, “and / or” refers to any and all possible combinations of one or more of the associated listed items.

[0053] The embodiment numbers disclosed in the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0054] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A method of producing a high vanadium ferroalloy cake, characterized in that, The method comprises the following steps: S1 determining the thickness and diameter of the alloy cake based on the target alloy cake weight and the furnace size; S2 configuring and laying the underlayer material, which comprises an arc starting material, an underlayer main material, and an underlayer metal cold material; S3 after electrically starting the arc, smelting in the form of thin layers, adding the main mixed material in N portions in sequence, and adding the non-underlayer metal cold material in batches during the addition of the main mixed material, wherein the theoretical product MV / MFe ratio in the first to N-2 portions of the main mixed material is 3.7-3.9, and the theoretical product MV / MFe ratio in the last two portions of the main mixed material is 3.9-4.1; S4 refining the melt obtained in S3, and then cooling to obtain the high-vanadium ferroalloy cake.

2. The method for preparing the high-vanadium ferroalloy cake according to claim 1, characterized in that: the maximum thickness of the alloy cake is: the longest diameter of the alloy cake is: = wherein, is the maximum thickness of the alloy cake in m; is the weight of the alloy cake in kg; is the furnace shell diameter in m; is the three-phase graphite electrode core circle diameter, Π is 3.14, is the true density of the alloy cake.

3. The method of producing high vanadium ferroalloy cakes according to claim 1, characterized in that, the underlayer main material and the main mixed material comprise flaky vanadium trioxide, and at least a portion of the main mixed material comprises flaky vanadium, and in the total furnace charge during the whole smelting process, the metal cold material: flaky vanadium trioxide: flaky vanadium = (1.5-2.5): (2-8):

1.

4. The method of producing high vanadium ferroalloy cakes according to claim 1, characterized in that, The mass ratio of the underlayer metal cold material to the non-underlayer metal cold material is 1: (2-4).

5. The method of producing high vanadium ferroalloy cakes according to claim 1, characterized in that, The diameter of the alloy cake is designed to be 1.8-2.0 times the diameter of the pole core.

6. The method of producing high vanadium ferroalloy cakes according to claim 1, characterized in that, In the underlayer material, the mass ratio of the arc starting material: underlayer main material: underlayer metal cold material is 1: (4-5):

1.

7. The method of producing high vanadium ferroalloy cakes according to claim 1, characterized in that, In the theoretical reaction product of the arc starting material, the molar ratio MV / MFe of the oxides of vanadium and iron is 3.5-3.

7.

8. The method of producing high vanadium ferroalloy cakes according to claim 1, characterized in that, The main mixed material is divided into N portions, 3≤N≤6, and the non-underlayer metal cold material added during smelting is divided into M portions, and the non-underlayer metal cold material is added in the first M portions of the N portions of the main mixed material, wherein 1≤M≤N.

9. A high vanadium ferroalloy cake characterized in that, Prepared by the method of any one of claims 1-8.

10. A method for rapidly obtaining the composition of ferrovanadium alloy, characterized in that, Using the method of any one of claims 1-8 to prepare a high-vanadium ferroalloy cake, crushing the alloy cake, sampling and analyzing the composition of the crushed alloy particles.

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