A method for determining the amount of feed based on the dynamic yield of refined titanium-ferroalloy

Abstract

The present invention discloses a method for determining the feed amount based on the dynamic yield of refined titanium-iron alloy. The method includes establishing a dynamic yield model of alloy; obtaining the station entry parameters of the current furnace, the refining parameters of the current furnace after multiple feedings and the parameters of historical furnaces; calculating the yield of all elements and the weight of all elements in molten steel; calculating the oxidation reaction rate of the elements; calculating the material feed amount of the current furnace; after feeding according to the calculated material feed amount, obtaining the refining parameters of the current furnace after this feeding; judging whether the element content in the molten steel meets the target requirements according to the refining parameters after the current furnace is fed; if it is judged that the element content in the molten steel does not meet the target requirements, repeating the above operation again until the element content in the molten steel after feeding meets the target requirements. The scheme provided by the present invention can effectively reduce production costs and improve product quality stability.

Description

Technical Field

[0001] The invention relates to the technical field of alloy smelting, and in particular to a method for determining a feed amount based on a dynamic yield of a refined ferrotitanium alloy. Background Art

[0002] In the modern steelmaking process using refining technology, the LF refining furnace plays a connecting role, so the LF refining furnace is known as the buffer in the steelmaking process. In the smelting process, the chemical reaction of the alloy is complex, and the composition of the molten steel usually needs to be adjusted many times to achieve the target, resulting in alloy waste and unstable quality. Therefore, researching and developing the molten steel composition control technology of the LF refining furnace and realizing the standardization of the composition control of the LF refining process are of great significance for improving and stabilizing the product quality and output of steel enterprises and reducing production costs.

[0003] At present, the LF refining furnace generally adopts the empirical operation mode on site. The feeding methods of the refined alloys of the LF refining furnace are quite different, which leads to large differences in the alloy usage between furnaces and requires repetitive operations such as repeated feeding and sampling. Therefore, the empirical operation mode is difficult to optimize the operating variables of the process according to the specific conditions of the furnace, lacks operational flexibility, and it is difficult to coordinate the composition control when adjusting multiple parameters, which affects the accuracy of the control of the endpoint composition of the molten steel. In severe cases, it affects the refining process cycle and the unqualified composition of the molten steel, resulting in the change of steel grade or the scrapping of the molten steel. Summary of the invention

[0004] In order to solve the technical problems of non-standardized feeding of existing alloys and suboptimal cost and composition, an embodiment of the present invention provides a method for determining feeding amount based on the dynamic yield of refined titanium-ferroalloy.

[0005] The technical solution of the embodiment of the present invention is achieved as follows:

[0006] The embodiment of the present invention provides a method for determining the feed amount based on the dynamic yield of refined titanium-ferroalloy, the method comprising:

[0007] Establishing a dynamic alloy yield model; the dynamic alloy yield model includes an element yield model, an element weight model in molten steel and Oxidation reaction rate models of elements;

[0008] Obtain the station entry parameters of the current furnace, the refining parameters of the current furnace after multiple charging, and the parameters of historical furnaces;

[0009] According to the station entry parameters of the current furnace and the refining parameters after multiple charging of the current furnace, the recovery rate model of the elements and the weight model of the elements in the molten steel are used to calculate the recovery rate of all elements and the weight of all elements in the molten steel;

[0010] According to the historical furnace parameters, using the Oxidation reaction rate model of elements, calculation The oxidation reaction rate of the element;

[0011] According to the station entry parameters of the current furnace, the refining parameters after multiple feedings of the current furnace, the recovery rate of all elements, the weight of all elements in the molten steel and the The oxidation reaction rate of the element is used to calculate the material input amount for the current furnace;

[0012] After feeding according to the calculated material feeding amount, the refining parameters of the current furnace after the feeding are obtained; according to the refining parameters of the current furnace after the feeding, whether the element content in the molten steel reaches the target requirement is judged; if it is judged that the element content in the molten steel does not reach the target requirement, the above operation is repeated again until the element content in the molten steel after the feeding reaches the target requirement.

[0013] In one embodiment, the alloy dynamic yield model includes an element yield model, an element weight model in molten steel, and Oxidation reaction rate models of elements;

[0014] The yield model of the element is:

[0015] Calculation formula (1)

[0016] in, For element M The yield rate, is the element M after feeding Weight in molten steel, is the weight of molten steel before adding materials, is the element M before feeding The content in molten steel, Contains element M The amount of material added, is the element M in the material Content;

[0017] The weight model of the elements in molten steel is:

[0018] Calculation formula (2)

[0019] in, is the element M after feeding Weight in molten steel, is the element M before feeding The content in molten steel, is the element M after feeding The content in molten steel, is the weight of molten steel before adding materials;

[0020] Said The oxidation reaction rate model of an element is:

[0021] Calculation formula (3)

[0022] in, for The oxidation reaction rate of an element, To contain molten steel elements in continuous casting The content of To refine the first element of molten steel The content of Contains elements The amount of material added, Elements in the material The content of is the weight of molten steel before adding materials; T is temperature, P is melting point, and A is the constant coefficient.

[0023] In one embodiment, the yield of all elements and the weight of all elements in molten steel are calculated, including:

[0024] Calculate the yield of the following elements:

[0025] C, Si, Mn, P, S, Cu, V, Nb, Cr, Ni, Mo, Sn, N, Alt, Als, B, Ti, Ca, Pb, Sb, Zn, Co, Mg, Zr, W, Ta, Bi, Se;

[0026] Calculate the weight of the following elements in molten steel:

[0027] C, Si, Mn, P, S, Cu, V, Nb, Cr, Ni, Mo, Sn, N, Alt, Als, B, Ti, Ca, Pb, Sb, Zn, Co, Mg, Zr, W, Ta, Bi, Se.

[0028] In one embodiment, calculating the material input amount of the current heat includes:

[0029] Calculate the feeding amount of the following materials in the current furnace:

[0030] Carbon powder, carbon manganese, metallic manganese, silicon manganese, carbon chromium, ferrosilicon, ferromolybdenum, ferrovanadium, ferrotitanium, ferrotungsten, ferroboron, ferroniobium, niobium phosphorus, copper plate, nickel plate.

[0031] In one embodiment, according to the station entry parameters of the current furnace, the refining parameters after the current furnace is charged multiple times, the recovery rate of all elements, the weight of all elements in the molten steel and the The oxidation reaction rate of the element is used to calculate the material input amount for the current furnace, including:

[0032] The materials to be calculated for feeding amount are divided into basic materials and supplementary alloys; and the basic materials are divided into one group of single element materials, two groups of composite element materials and three groups of composite element materials according to element types;

[0033] According to the station entry parameters of the current furnace, the refining parameters after multiple charging of the current furnace, the recovery rate of all elements and the weight of all elements in the molten steel, the charging amount of the group of single element materials is calculated according to the charging amount calculation formula of single element materials, the charging amount of the two groups of composite element materials is calculated according to the charging amount calculation formula of two groups of composite element materials, and the charging amount of the three groups of composite element materials is calculated according to the charging amount calculation formula of three groups of composite element materials;

[0034] According to the station entry parameters of the current furnace, the refining parameters after multiple feedings of the current furnace, the recovery rate of all elements, the weight of all elements in the molten steel and the The oxidation reaction rate of the element is calculated according to the calculation formula of the supplementary alloy feeding amount.

[0035] In one embodiment, one group of single element materials includes molybdenum iron, vanadium iron, tungsten iron, copper plate and nickel plate; two groups of composite element materials include carbon powder, silicon iron, silicon manganese, carbon manganese, carbon chromium and metallic manganese; three groups of composite element materials include niobium iron and niobium phosphorus; and supplementary alloys include boron iron and titanium iron.

[0036] In one embodiment, the feeding amount of the group of single-element materials is calculated according to the single-element material feeding amount calculation formula, including:

[0037] The calculation formula for the single element material feeding amount is:

[0038] Calculation formula (4)

[0039] Calculation formula (5)

[0040] in, is the required element M The weight, For element M The target content, M is the element of molten steel after the latest feeding The content of is the weight of molten steel before adding materials, is the element M in the material The content of For element M The yield rate, It is the feeding amount of single element material to be added.

[0041] In one embodiment, the feeding amount of the two groups of composite element materials is calculated according to the calculation formula of the feeding amount of the two groups of composite element materials. include:

[0042] Calculate the feeding amount of the two groups of composite element materials when the total price is the minimum according to the calculation formula for the feeding amount of the two groups of composite element materials;

[0043] The calculation formula for the feeding amount of the two groups of composite element materials is:

[0044]

[0045]

[0046]

[0047]

[0048]

[0049]

[0050]

[0051]

[0052]

[0053] in, , , , are the weight differences of the required elements C, Si, Mn, and Cr, respectively. is the target content of C element, is the content of element C in molten steel after the latest charging, for Target content of elements, The element of molten steel after the latest charging The content of for Target content of elements, The element of molten steel after the latest charging The content of for Target content of elements, The element of molten steel after the latest charging The content of is the weight of molten steel before adding materials, is the amount of carbon powder to be added, is the amount of silicon manganese to be added, is the amount of carbon and manganese to be added, is the amount of carbon chromium to be added, is the amount of ferrosilicon to be added, is the amount of metallic manganese to be added, is the content of C element in carbon powder, is the content of C element in silicon manganese, is the content of C element in carbon manganese, is the content of C element in carbon chromium, is the content of Si element in ferrosilicon, is the content of Si element in silicon manganese, is the content of Mn element in silicon manganese, is the content of Mn element in carbon manganese, is the content of Mn element in metallic manganese, is the content of Cr in carbon chromium, , , , are the recovery rates of C, Si, Mn and Cr elements respectively, , , , , , They are the material prices of carbon powder, silicon manganese, carbon manganese, ferrosilicon, metallic manganese and carbon chromium. The total price.

[0054] In one embodiment, the feeding amount of the three groups of composite element materials is calculated according to the calculation formula of the feeding amount of the three groups of composite element materials. include:

[0055] Calculate the feeding amount of the three groups of composite element materials when the total price is the minimum according to the calculation formula for the feeding amount of the three groups of composite element materials;

[0056] The calculation formula for the feeding amount of the three groups of composite element materials is:

[0057] Calculation formula (15)

[0058] Calculation formula (16)

[0059] Calculation formula (17)

[0060] Calculation formula (18)

[0061] Calculation formula (19)

[0062] in, is the weight difference of the required element Nb, is the maximum weight difference allowed for element P, for Target content of elements, The element of molten steel after the latest charging The content of for The target lower limit of the element, The element of molten steel after the latest charging The content of is the weight of molten steel before adding materials, is the amount of ferroniobium to be added, is the amount of niobium and phosphorus to be added, is the content of Nb element in ferroniobium, is the content of Nb element in niobium phosphorus, is the content of P element in ferroniobium, is the content of P element in niobium phosphorus, , is the recovery rate of Nb and P elements, , The prices of ferroniobium and niobium phosphate materials are: The total price.

[0063] In one embodiment, the amount of the supplementary alloy is calculated according to the calculation formula for the amount of the supplementary alloy. include:

[0064] The calculation formula for the amount of supplementary alloy is:

[0065] Calculation formula (20)

[0066] Calculation formula (21)

[0067] in, is the required element M The weight, For element M The target content, M is the element of molten steel after the latest feeding The content of is the weight of molten steel before adding materials, M in the material Element content, M When the element is B element, is the yield of element B, M Elements are When the element for The oxidation reaction rate of the element; is the amount of supplementary alloy to be added.

[0068] The method for determining the feed amount based on the dynamic yield of refined titanium-ferroalloy provided in the embodiment of the present invention can effectively reduce production costs and improve product quality stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 The present invention is a schematic flow chart of a method for determining feed amount based on the dynamic yield of refined ferrotitanium alloy according to an embodiment of the present invention. DETAILED DESCRIPTION

[0070] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0071] The embodiment of the present invention provides a method for determining the feed amount based on the dynamic yield of refined titanium-iron alloy, such as Figure 1 As shown, the method includes:

[0072] Step 101: Establishing a dynamic alloy yield model; the dynamic alloy yield model includes an element yield model, an element weight model in molten steel, and Oxidation reaction rate models of elements;

[0073] Step 102: Obtain the station entry parameters of the current furnace, the refining parameters of the current furnace after multiple charging, and the historical furnace parameters;

[0074] Step 103: Calculate the yield of all elements and the weight of all elements in the molten steel by using the yield model of the elements and the weight model of the elements in the molten steel according to the station entry parameters of the current furnace and the refining parameters after multiple charging of the current furnace;

[0075] Step 104: Based on the historical furnace parameters, using the Oxidation reaction rate model of elements, calculation The oxidation reaction rate of the element;

[0076] Step 105: According to the station entry parameters of the current furnace, the refining parameters after the current furnace is charged multiple times, the recovery rate of all elements, the weight of all elements in the molten steel and the The oxidation reaction rate of the element is used to calculate the material input amount for the current furnace;

[0077] Step 106: After feeding according to the calculated material feeding amount, obtain the refining parameters of the current furnace after the feeding; determine whether the element content in the molten steel meets the target requirement based on the refining parameters of the current furnace after the feeding; if it is determined that the element content in the molten steel does not meet the target requirement, repeat the above operation until the element content in the molten steel after the feeding meets the target requirement.

[0078] This embodiment uses the first steel liquid inspection result of refining as the initial value and the internal control standard of the steel grade as the target value, obtains the production parameters in the smelting process, fully considers the influence of the change of steel liquid element yield rate caused by the element content of materials in different purchased batches, oxidation reaction and other reasons on the steel liquid composition, establishes the alloy dynamic yield rate model, and realizes the dynamic suggestion of material feeding in the refining process of LF refining furnace. This embodiment can effectively reduce production costs and improve product quality stability.

[0079] Specifically, the station entry parameters of the current heat in this embodiment include internal control standards, process paths, material element content, material melting point, first molten steel test results, molten steel weight, etc. Among them, the internal control standards refer to the element content requirements of different steel grades specified by the refining workshop; the process path refers to the smelting path in the steelmaking process, such as LF to VD, LF to RH, and LF to casting machine.

[0080] The refining parameters after multiple charging of the current furnace include the molten steel inspection results after each charging during the refining process, the molten steel inspection time, the corresponding amount of material input, the molten steel temperature, etc.

[0081] The historical furnace parameters include the entry parameters of the historical furnace, the refining parameters after multiple charging of the historical furnace, and the inspection results of the molten steel in the continuous casting tundish after the refining of the historical furnace is completed.

[0082] The test results of each molten steel test include the contents of the following elements: C, Si, Mn, P, S, Cu, V, Nb, Cr, Ni, Mo, Sn, N, Alt, Als, B, Ti, Ca, Pb, Sb, Zn, Co, Mg, Zr, W, Ta, Bi, and Se.

[0083] The materials used in this embodiment include metals and slag. The metals include carbon manganese, metallic manganese, silicon manganese, carbon chromium, ferrosilicon, ferromolybdenum, ferrovanadium, ferrotitanium, ferrotungsten, ferroboron, ferroniobium, niobium phosphorus, copper plate, and nickel plate; the slag includes carbon powder.

[0084] Molten steel temperature refers to the feedback value of the molten steel temperature measured by the temperature measuring gun.

[0085] The alloy dynamic yield model in this embodiment includes the element yield model, the element weight model in molten steel and Oxidation reaction rate models of elements;

[0086] The element yield model is:

[0087] Calculation formula (1)

[0088] in For element M The yield rate, is the element M after feeding Weight in molten steel, is the weight of molten steel before adding materials, is the element M before feeding The content in molten steel, Contains element M The amount of material added, is the element M in the material Content;

[0089] The weight model of elements in molten steel is:

[0090] Calculation formula (2)

[0091] in, is the element M after feeding Weight in molten steel, is the element M before feeding The content in molten steel, is the element M after feeding The content in molten steel, is the weight of molten steel before adding materials;

[0092] The oxidation reaction rate model of an element is:

[0093] Calculation formula (3)

[0094] in, for The oxidation reaction rate of an element, To contain molten steel elements in continuous casting The content of To refine the first element of molten steel The content of Contains elements The amount of material added, Elements in the material The content of is the weight of molten steel before adding materials; T is temperature, P is melting point, and A is the constant coefficient.

[0095] In actual application, the station entry parameters of the current furnace, the refining parameters of the current furnace after multiple charging, and the historical furnace parameters are first obtained; then, according to the station entry parameters of the current furnace and the refining parameters of the current furnace after multiple charging, the recovery rate model of the elements and the weight model of the elements in the molten steel are used to calculate the recovery rate of all elements and the weight of all elements in the molten steel; according to the historical furnace parameters, the recovery rate model of the elements and the weight model of the elements in the molten steel are used to calculate the recovery rate of all elements and the weight of all elements in the molten steel. Oxidation reaction rate model of elements, calculation The oxidation reaction rate of an element.

[0096] Here, according to the historical furnace parameters, using the Oxidation reaction rate model of elements, calculation When calculating the oxidation reaction rate of an element, the historical furnace parameters can be statistically analyzed first, and then classified according to the steel type and process path. According to the classification results, the trend of the upper line is taken according to the result-intensive area, and the calculation is performed. The oxidation reaction rate of the element. That is, after each heat of refining is completed, the historical heat parameters will be updated again, and the trend of the upper line will be taken according to the result-intensive area to calculate The oxidation reaction rate of an element.

[0097] After calculating the recovery rate of all elements, the weight of all elements in the molten steel and the After calculating the oxidation reaction rate of the element, the material feed amount can be calculated.

[0098] Here, the materials to be calculated for feeding amount are divided into basic materials and supplementary alloys; and the basic materials are divided into one group of single element materials, two groups of composite element materials and three groups of composite element materials according to element types.

[0099] The base materials do not contain ferrotitanium (very easy to oxidize) and ferroboron (trace amounts) and can be divided into three groups;

[0100] A group of single element materials includes ferromolybdenum, ferrovanadium, ferrotungsten, copper plate and nickel plate;

[0101] The second group of composite element materials includes carbon powder, ferrosilicon, silicon manganese, carbon manganese, carbon chromium and metallic manganese;

[0102] The three groups of composite element materials include niobium iron and niobium phosphorus.

[0103] The feeding amount of the group of single-element materials is calculated according to the single-element material feeding amount calculation formula.

[0104] The calculation formula for the single element material feeding amount is:

[0105] Calculation formula (4)

[0106] Calculation formula (5)

[0107] in, is the required element M The weight, For element M The target content, M is the element of molten steel after the latest charging The content of is the weight of molten steel before adding materials, is the element M in the material The content of For element M The yield rate, It is the feeding amount of single element material to be added.

[0108] The feeding amounts of the two groups of composite element materials are calculated according to the calculation formula for the feeding amounts of the two groups of composite element materials.

[0109] Calculate the feeding amount of the two groups of composite element materials when the total price is the minimum according to the calculation formula for the feeding amount of the two groups of composite element materials;

[0110] The calculation formula for the feeding amount of the two groups of composite element materials is:

[0111]

[0112]

[0113]

[0114]

[0115]

[0116]

[0117]

[0118]

[0119]

[0120] in, , , , are the weight differences of the required elements C, Si, Mn, and Cr, respectively. is the target content of C element, is the content of element C in molten steel after the latest charging, for Target content of elements, The element of molten steel after the latest charging The content of for Target content of elements, The element of molten steel after the latest charging The content of for Target content of elements, The element of molten steel after the latest charging The content of is the weight of molten steel before adding materials, is the amount of carbon powder to be added, is the amount of silicon manganese to be added, is the amount of carbon and manganese to be added, is the amount of carbon chromium to be added, is the amount of ferrosilicon to be added, is the amount of metallic manganese to be added, is the content of C element in carbon powder, is the content of C element in silicon manganese, is the content of C element in carbon manganese, is the content of C element in carbon chromium, is the content of Si element in ferrosilicon, is the content of Si element in silicon manganese, is the content of Mn element in silicon manganese, is the content of Mn element in carbon manganese, is the content of Mn element in metallic manganese, is the content of Cr in carbon chromium, , , , are the recovery rates of C, Si, Mn and Cr elements respectively, , , , , , They are the material prices of carbon powder, silicon manganese, carbon manganese, ferrosilicon, metallic manganese and carbon chromium. The total price.

[0121] The feeding amounts of the three groups of composite element materials are calculated according to the calculation formula for the feeding amounts of the three groups of composite element materials.

[0122] Calculate the feeding amount of the three groups of composite element materials when the total price is the minimum according to the calculation formula for the feeding amount of the three groups of composite element materials;

[0123] The calculation formula for the feeding amount of the three groups of composite element materials is:

[0124] Calculation formula (15)

[0125] Calculation formula (16)

[0126] Calculation formula (17)

[0127] Calculation formula (18)

[0128] Calculation formula (19)

[0129] in, is the weight difference of the required element Nb, is the maximum weight difference allowed for element P, for Target content of elements, The element of molten steel after the latest charging The content of for The target lower limit of the element, The element of molten steel after the latest charging The content of is the weight of molten steel before adding materials, is the amount of ferroniobium to be added, is the amount of niobium and phosphorus to be added, is the content of Nb element in ferroniobium, is the content of Nb element in niobium phosphorus, is the content of P element in ferroniobium, is the content of P element in niobium phosphorus, , is the recovery rate of Nb and P elements, , The prices of ferroniobium and niobium phosphate materials are: The total price.

[0130] The above is the calculation method for the basic material feed amount.

[0131] The calculation method for supplementary alloy feed (ferroboron, ferrotitanium) is as follows:

[0132] Calculate the amount of the supplementary alloy according to the calculation formula for the amount of the supplementary alloy include:

[0133] The calculation formula for the amount of supplementary alloy is:

[0134] Calculation formula (20)

[0135] Calculation formula (21)

[0136] in, is the required element M The weight, For element M The target content, M is the element of molten steel after the latest charging The content of is the weight of molten steel before adding materials, M in the material Element content, M When the element is B element, is the yield of element B, M Elements are When the element for The oxidation reaction rate of the element; is the amount of supplementary alloy to be added.

[0137] According to the above calculation process, the material feeding amount can be calculated, and after feeding according to the calculated feeding amount, the molten steel test results can be performed again. If the molten steel test results show that the element composition of the molten steel does not meet the requirements of the internal control standards, it is necessary to recalculate the feeding amount according to the latest molten steel test results and feed again until the requirements of the internal control standards are met.

[0138] This embodiment scheme starts with actual production big data, and on the basis of optimizing the mechanism model, establishes a dynamic alloy yield model during LF furnace refining, and uses traditional composition test results to revise the model multiple times and keep it close to actual production, thus ensuring the accuracy of the model. This embodiment scheme can effectively reduce production costs and improve product quality stability.

[0139] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0140] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for determining the feed amount based on the dynamic yield of refined titanium-ferroalloy, characterized in that: The method comprises: Step 101: Establishing a dynamic alloy yield model; the dynamic alloy yield model includes an element yield model, an element weight model in molten steel, and Oxidation reaction rate models of elements; Step 102: Obtain the station entry parameters of the current furnace, the refining parameters of the current furnace after multiple charging, and the historical furnace parameters; Step 103: Calculate the yield of all elements and the weight of all elements in the molten steel by using the yield model of the elements and the weight model of the elements in the molten steel according to the station entry parameters of the current furnace and the refining parameters after multiple charging of the current furnace; Step 104: Based on the historical furnace parameters, using the Oxidation reaction rate model of elements, calculation The oxidation reaction rate of the element; Step 105: According to the station entry parameters of the current furnace, the refining parameters after the current furnace is charged multiple times, the recovery rate of all elements, the weight of all elements in the molten steel and the The oxidation reaction rate of the element is used to calculate the material input amount for the current furnace; Step 106: after feeding the material according to the calculated material feeding amount, obtaining the refining parameters of the current furnace after the feeding; judging whether the element content in the molten steel reaches the target requirement according to the refining parameters of the current furnace after the feeding; if it is judged that the element content in the molten steel does not reach the target requirement, repeating steps 102 to 106 again until the element content in the molten steel reaches the target requirement after the feeding; The alloy dynamic yield model includes an element yield model, an element weight model in molten steel and Oxidation reaction rate models of elements; The yield model of the element is: Calculation formula (1) in, is the yield of element Mi, is the weight of element Mi in molten steel after charging, is the weight of molten steel before adding materials, is the content of element Mi in molten steel before charging, is the amount of material containing element Mi added, is the content of element Mi in the material; The weight model of the elements in molten steel is: Calculation formula (2) in, is the weight of element Mi in molten steel after charging, is the content of element Mi in molten steel before charging, is the content of element Mi in molten steel after charging, is the weight of molten steel before adding materials; Said The oxidation reaction rate model of an element is: Calculation formula (3) in, for The oxidation reaction rate of an element, To contain molten steel elements in continuous casting The content of To refine the first element of molten steel The content of Contains elements The amount of material added, Elements in the material The content of is the weight of molten steel before adding materials; T is temperature, P is melting point, and A is the constant coefficient.

2. The method for determining the feed amount based on the dynamic yield of refined titanium-ferroalloy according to claim 1, characterized in that: Calculate the yield of all elements and the weight of all elements in molten steel, including: Calculate the yield of the following elements: C, Si, Mn, P, S, Cu, V, Nb, Cr, Ni, Mo, Sn, N, Alt, Als, B, Ti, Ca, Pb, Sb, Zn, Co, Mg, Zr, W, Ta, Bi, Se; Calculate the weight of the following elements in molten steel: C, Si, Mn, P, S, Cu, V, Nb, Cr, Ni, Mo, Sn, N, Alt, Als, B, Ti, Ca, Pb, Sb, Zn, Co, Mg, Zr, W, Ta, Bi, Se.

3. The method for determining the feed amount based on the dynamic yield of refined titanium-ferroalloy according to claim 1, characterized in that: Calculate the material input amount of the current furnace, including: Calculate the feeding amount of the following materials in the current furnace: Carbon powder, carbon manganese, metallic manganese, silicon manganese, carbon chromium, ferrosilicon, ferromolybdenum, ferrovanadium, ferrotitanium, ferrotungsten, ferroboron, ferroniobium, niobium phosphorus, copper plate, nickel plate.

4. The method for determining the feed amount based on the dynamic yield of refined ferrotitanium alloy according to claim 3, characterized in that: According to the station entry parameters of the current furnace, the refining parameters after multiple feedings of the current furnace, the recovery rate of all elements, the weight of all elements in the molten steel and the The oxidation reaction rate of the element is used to calculate the material input amount for the current furnace, including: The materials to be calculated for feeding amount are divided into basic materials and supplementary alloys; and the basic materials are divided into one group of single element materials, two groups of composite element materials and three groups of composite element materials according to element types; According to the station entry parameters of the current furnace, the refining parameters after multiple charging of the current furnace, the recovery rate of all elements and the weight of all elements in the molten steel, the charging amount of the group of single element materials is calculated according to the charging amount calculation formula of single element materials, the charging amount of the two groups of composite element materials is calculated according to the charging amount calculation formula of two groups of composite element materials, and the charging amount of the three groups of composite element materials is calculated according to the charging amount calculation formula of three groups of composite element materials; According to the station entry parameters of the current furnace, the refining parameters after multiple feedings of the current furnace, the recovery rate of all elements, the weight of all elements in the molten steel and the The oxidation reaction rate of the element is calculated according to the calculation formula of the supplementary alloy feeding amount.

5. The method for determining the feed amount based on the dynamic yield of refined titanium-ferroalloy according to claim 4, characterized in that: One group of single element materials includes ferromolybdenum, ferrovanadium, ferrotungsten, copper plate and nickel plate; the second group of composite element materials includes carbon powder, ferrosilicon, silicomanganese, carbon manganese, carbon chromium and metallic manganese; the third group of composite element materials includes ferroniobium and niobium phosphorus; and the supplementary alloys include ferroboron and ferrotitanium.

6. The method for determining the feed amount based on the dynamic yield of refined ferrotitanium alloy according to claim 5, characterized in that: Calculating the feeding amount of the group of single-element materials according to the single-element material feeding amount calculation formula includes: The calculation formula for the single element material feeding amount is: Calculation formula (4) Calculation formula (5) in, is the weight of the required element Mi, is the target content of element Mi, is the content of element Mi in molten steel after the latest charging, is the weight of molten steel before adding materials, is the content of element Mi in the material, is the yield of element Mi, It is the feeding amount of single element material to be added.

7. The method for determining the feed amount based on the dynamic yield of refined titanium-ferroalloy according to claim 5, characterized in that: The feeding amounts of the two groups of composite element materials are calculated according to the feeding amount calculation formula of the two groups of composite element materials, including: Calculate the feeding amount of the two groups of composite element materials when the total price is the minimum according to the calculation formula for the feeding amount of the two groups of composite element materials; The calculation formula for the feeding amount of the two groups of composite element materials is: in, , , , are the weight differences of the required elements C, Si, Mn, and Cr, respectively. is the target content of C element, is the content of element C in molten steel after the latest charging, for Target content of elements, The element of molten steel after the latest charging The content of for Target content of elements, The element of molten steel after the latest charging The content of for Target content of elements, The element of molten steel after the latest charging The content of is the weight of molten steel before adding materials, is the amount of carbon powder to be added, is the amount of silicon manganese to be added, is the amount of carbon and manganese to be added, is the amount of carbon chromium to be added, is the amount of ferrosilicon to be added, is the amount of metallic manganese to be added, is the content of C element in carbon powder, is the content of C element in silicon manganese, is the content of C element in carbon manganese, is the content of C element in carbon chromium, is the content of Si element in ferrosilicon, is the content of Si element in silicon manganese, is the content of Mn element in silicon manganese, is the content of Mn element in carbon manganese, is the content of Mn element in metallic manganese, is the content of Cr in carbon chromium, , , , are the recovery rates of C, Si, Mn and Cr elements respectively, , , , , , They are the material prices of carbon powder, silicon manganese, carbon manganese, ferrosilicon, metallic manganese and carbon chromium. The total price.

8. The method for determining the feed amount based on the dynamic yield of refined titanium-ferroalloy according to claim 5, characterized in that: The feeding amounts of the three groups of composite element materials are calculated according to the feeding amount calculation formula of the three groups of composite element materials, including: Calculate the feeding amount of the three groups of composite element materials when the total price is the minimum according to the calculation formula for the feeding amount of the three groups of composite element materials; The calculation formula for the feeding amount of the three groups of composite element materials is: Calculation formula (15) Calculation formula (16) Calculation formula (17) Calculation formula (18) Calculation formula (19) in, is the weight difference of the required element Nb, is the maximum weight difference allowed for element P, for Target content of elements, The element of molten steel after the latest charging The content of for The target lower limit of the element, The element of molten steel after the latest charging The content of is the weight of molten steel before adding materials, is the amount of ferroniobium to be added, is the amount of niobium and phosphorus to be added, is the content of Nb element in ferroniobium, is the content of Nb element in niobium phosphorus, is the content of P element in ferroniobium, is the content of P element in niobium phosphorus, , is the recovery rate of Nb and P elements, , The prices of ferroniobium and niobium phosphate materials are: The total price.

9. The method for determining the feed amount based on the dynamic yield of refined titanium-ferroalloy according to claim 5, characterized in that: The amount of the supplementary alloy is calculated according to the calculation formula for the amount of the supplementary alloy, including: The calculation formula for the amount of supplementary alloy is: Calculation formula (20) Calculation formula (21) in, is the weight of the required element Mi, is the target content of element Mi, is the content of element Mi in molten steel after the latest charging, is the weight of molten steel before adding materials, is the content of Mi element in the material. When Mi element is B element, is the yield of element B, and element Mi is When the element for The oxidation reaction rate of the element; is the amount of supplementary alloy to be added.

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