Converter scrap steel cost performance determination method and device, medium and electronic equipment

Abstract

The invention discloses a method and device for determining the cost performance of converter scrap steel, a medium and electronic equipment. The method comprises the steps that the scrap steel cost and the scrap steel element content of at least two kinds of scrap steel and the target in-furnace material parameter, the target molten steel parameter and the target residual element content range of a target steel type are obtained; determining a target scrap steel adding amount according to the target charging material parameter and the target molten steel parameter; according to the steel scrap element content and the target residual element content range, at least two target steel scrap burdening proportions are determined; and for each target scrap steel batching proportion, the actual scrap steel yield when the target steel grade is smelted by the converter is obtained, and the scrap steel cost performance is determined according to the target scrap steel batching proportion, the actual scrap steel yield and the scrap steel cost of the at least two types of scrap steel. The method can accurately evaluate the cost performance of the scrap steel.

Description

Background Art

[0002] Adding scrap steel in the converter process can effectively reduce the steelmaking cost. When adding scrap steel, a form of combining multiple types of scrap steel is usually adopted. Since there are many types of scrap steel, and there are significant differences in quality and price, the selection of scrap steel types affects the production cost.

[0003] Currently, the scrap steel ratio is determined according to a static table, which is determined based on experience and mainly considers whether the process requirements are met, without considering the production cost. Summary of the Invention

[0004] Embodiments of the present application provide a method, device, medium, and electronic device for determining the cost performance of converter scrap steel, which are used to solve the technical problem that the production cost is not considered when determining the scrap steel ratio according to a static table.

[0005] Other characteristics and advantages of the present application will become apparent through the following detailed description, or will be learned in part through the practice of the present application.

[0006] According to the first aspect of the present application, a method for determining the cost performance of converter scrap steel is provided, and the method includes:

[0007] Obtain the scrap steel cost and scrap steel element content of at least two types of scrap steel, as well as the target furnace charge parameters, target molten steel parameters, and target residual element content range of the target steel grade. The scrap steel element content includes the content of at least two target elements, and the target residual element content range includes the content range of the at least two target elements;

[0008] Determine the target scrap steel addition amount according to the target furnace charge parameters and the target molten steel parameters;

[0009] Determine at least two target scrap steel batching ratios according to each scrap steel element content and the target residual element content range. The target scrap steel batching ratio is the batching ratio of each scrap steel;

[0010] For each target scrap steel batching ratio, obtain the actual scrap steel recovery rate when smelting the target steel grade in the converter. Determine the cost performance of the scrap steel according to the target scrap steel batching ratio, the actual scrap steel recovery rate, and the scrap steel cost of the at least two types of scrap steel. Among them, the actual scrap steel recovery rate is the total recovery rate of the at least two types of scrap steel. When smelting the target steel grade in the converter, add scrap steel according to the target scrap steel addition amount and the target scrap steel batching ratio.

[0011] In some embodiments of the present application, based on the foregoing solution, the determining the cost performance of the scrap steel according to the target scrap steel batching ratio, the actual scrap steel recovery rate, and the scrap steel cost of the at least two types of scrap steel includes:

[0012] For each type of scrap steel, determine the batching ratio of the scrap steel according to the target scrap steel batching ratio, and weight the cost of the scrap steel based on the batching ratio to obtain the ratio cost of the scrap steel;

[0013] Sum the ratio costs of all the scrap steels to obtain the total cost;

[0014] Take the ratio of the total cost to the actual scrap steel yield as the scrap steel cost performance.

[0015] In some embodiments of the present application, based on the foregoing solution, the obtaining of the actual scrap steel yield when smelting the target steel grade in the converter includes:

[0016] Obtain the furnace condition fluctuation coefficient of the converter, the tapping volume, the current charging material parameters of the current charge, and the current scrap steel yield of each type of scrap steel;

[0017] When smelting the target steel grade for the first time in the converter, determine the actual scrap steel yield according to the current charging material parameters, the furnace condition fluctuation coefficient, the target scrap steel addition amount, and the tapping volume;

[0018] When smelting the target steel grade for the Nth time in the converter, determine the actual scrap steel yield according to the scrap steel batching ratio and the current scrap steel yields of each type, where N is a positive integer greater than or equal to 2.

[0019] In some embodiments of the present application, based on the foregoing solution, the current charging material parameters include the current addition amount and the current yield of the current charging material, the current charging material includes hot metal, flux, and alloy, and the determining of the actual scrap steel yield according to the current charging material parameters, the furnace condition fluctuation coefficient, the target scrap steel addition amount, and the tapping volume includes:

[0020] When the current charging material is hot metal, take the product of the furnace condition fluctuation coefficient and the current yield as the weighting parameter, and weight the current addition amount according to the weighting parameter to obtain the first yield amount;

[0021] When the current charging material is flux and alloy, weight the yield amount according to the current yield to obtain the second yield amount;

[0022] Sum the first yield amount and the second yield amounts to obtain the third yield amount;

[0023] Take the difference between the tapping volume and the third yield amount as the fourth yield amount;

[0024] Take the ratio of the fourth yield amount to the scrap steel addition amount as the actual scrap steel yield.

[0025] In some embodiments of the present application, based on the foregoing solution, the current scrap yield is updated through the following steps:

[0026] Obtain a yield correction coefficient, and the actual scrap yields and target scrap batching ratios of at least two historical heats;

[0027] Obtain the historical yields of each scrap based on the actual scrap yields and target scrap batching ratios of each of the historical heats;

[0028] For each type of scrap, take the difference between the historical yield and the current scrap yield as the yield deviation value, weight the yield deviation value based on the yield correction coefficient to obtain a yield correction value, and sum the current scrap yield and the yield correction value to update the current scrap yield.

[0029] In some embodiments of the present application, based on the foregoing solution, the target charging material parameters include the addition amount and component contents of the target charging materials, the target charging materials include raw dolomite, the target molten steel parameters include the calorific value of the molten steel, and determining the target scrap addition amount according to the target charging material parameters and the target molten steel parameters includes:

[0030] Determine the mass of the target tapped materials according to the addition amount and component contents of the target charging materials, where the target tapped materials include molten steel, slag, furnace gas, dust, and splashed metal;

[0031] Determine the heat income value according to the addition amount and component contents of the target charging materials and the output amount of the dust;

[0032] Determine the heat expenditure value according to the mass of the target tapped materials, the addition amount of the raw dolomite, and the component contents of the raw dolomite;

[0033] Take the difference between the heat income value and the heat expenditure value as the waste heat value;

[0034] Take the ratio of the waste heat value to the calorific value of the molten steel as the target scrap addition amount.

[0035] In some embodiments of the present application, based on the foregoing solution, determining at least two target scrap batching ratios according to the scrap element contents and the target residual element content ranges includes:

[0036] Obtain the preset batching ratios of each scrap;

[0037] For each target element of each type of scrap, weight the scrap element contents based on the preset batching ratios to obtain the proportional element contents of each target element;

[0038] Sum the contents of each of the proportional elements to obtain the total element content of each of the target elements;

[0039] When it is determined that the total element content of each of the target elements is within the content range of the target element, if so, use each of the preset proportions as the scrap steel batching ratio, and determine whether the types of the scrap steel batching ratio are greater than or equal to two. If not, return to execute the step of weighting the scrap steel element content based on the preset batching ratio for each of the target elements of each of the scrap steels to obtain the proportional element content of each of the target elements;

[0040] If not, update the preset batching ratio, and return to execute the step of weighting the scrap steel element content based on the preset batching ratio for each of the target elements of each of the scrap steels to obtain the proportional element content of each of the target elements.

[0041] According to a second aspect of the present application, there is provided a converter scrap steel cost performance determination device, the device comprising:

[0042] A first acquisition unit that acquires the scrap steel cost and scrap steel element content of at least two types of scrap steel, as well as the target furnace charge parameters, target molten steel parameters, and target residual element content range of the target steel grade. The scrap steel element content includes the contents of at least two target elements, and the target residual element content range includes the content ranges of the at least two target elements;

[0043] A first determination unit that determines the target scrap steel addition amount according to the target furnace charge parameters and the target molten steel parameters;

[0044] A second determination unit that determines at least two target scrap steel batching ratios according to the scrap steel element content and the target residual element content range, and the target scrap steel batching ratio is the batching ratio of each of the scrap steels;

[0045] A third determination unit that, for each of the target scrap steel batching ratios, acquires the actual scrap steel yield when smelting the target steel grade in the converter, and determines the scrap steel cost performance according to the target scrap steel batching ratio, the actual scrap steel yield, and the scrap steel costs of the at least two types of scrap steel. Among them, the actual scrap steel yield is the total yield of the at least two types of scrap steel. When smelting the target steel grade in the converter, scrap steel is added according to the target scrap steel addition amount and the target scrap steel batching ratio.

[0046] According to a third aspect of the present application, there is provided a computer-readable storage medium, on which a computer program is stored, characterized in that the computer program includes executable instructions, and when the executable instructions are executed by a processor, the method described in any embodiment of the first aspect of the present application is implemented.

[0047] According to the fourth aspect of the present application, it includes: one or more processors; a memory for storing executable instructions of the processors, and when the executable instructions are executed by the one or more processors, the one or more processors are caused to implement the method described in any embodiment of the first aspect of the present application.

[0048] The beneficial effects of the present application are as follows:

[0049] According to the target furnace charging parameters, target molten steel parameters, scrap steel element content, and target residual element content range, determine the target scrap steel addition amount and target scrap steel batching ratio, that is, calculate the theoretically added amount of scrap steel and the scrap steel batching ratio. Then, obtain the actual yield rate during the converter smelting of the target steel grade. According to the target scrap steel batching ratio, the actual scrap steel yield rate, and the scrap steel costs of the at least two types of scrap steel, determine the scrap steel cost performance ratio, that is, calculate the scrap steel cost performance ratio of the target scrap steel ratio, which is convenient for technicians to select the target scrap steel batching ratio according to the scrap steel cost performance ratio for actual production.

[0050] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0052] Figure 1 Shows a flowchart of a method for determining the scrap steel cost performance ratio in a converter in an embodiment of the present application;

[0053] Figure 2 Shows a block diagram of a device for determining the scrap steel cost performance ratio in a converter in an embodiment of the present application;

[0054] Figure 3 Shows a schematic diagram of a computer-readable storage medium in an embodiment of the present application;

[0055] Figure 4 Shows a schematic diagram of the system structure of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0057] In addition, the described features, structures or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to give a full understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be used. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid obscuring aspects of the present application.

[0058] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0059] The flowcharts shown in the drawings are only exemplary illustrations, not necessarily including all the content and operations / steps, nor necessarily executed in the described order. For example, some operations / steps may be decomposed, while some operations / steps may be combined or partially combined. Therefore, the actual execution order may change according to the actual situation.

[0060] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "plurality" is two or more.

[0061] Figure 1 A flowchart showing a method for determining the cost performance of converter scrap in an embodiment of the present application is shown. Refer to Figure 1 A method for determining the cost performance of converter scrap is provided, which at least includes S1 to S4 and is introduced in detail as follows:

[0062] In step S1, obtain the scrap costs and scrap element contents of at least two types of scrap, as well as the target charging material parameters, target molten steel parameters, and target residual element content ranges of the target steel grade. The scrap element contents include the contents of at least two target elements, and the target residual element content ranges include the content ranges of the at least two target elements. The target charging material parameters are the target parameters of the charging materials, the target molten steel parameters are the target parameters of the molten steel, and the target elements may be carbon, silicon, manganese, phosphorus, sulfur, copper, chromium, nickel, molybdenum, acid-soluble aluminum, titanium, niobium, boron, tin, arsenic.

[0063] In step S2, determine the target scrap addition amount according to the target charging material parameters and the target molten steel parameters. The target scrap addition amount is the total target addition amount of the scrap.

[0064] In step S3, determine at least two target scrap batching ratios according to the scrap element contents and the target residual element content ranges. The target scrap batching ratios are the batching ratios of the respective scraps.

[0065] In step S4, for each of the target scrap batching ratios, obtain the actual scrap yield during the converter smelting of the target steel grade. Determine the scrap cost performance according to the target scrap batching ratio, the actual scrap yield, and the scrap costs of the at least two types of scrap. Among them, the actual scrap yield is the total yield of the at least two types of scrap. When smelting the target steel grade in the converter, add the scrap according to the target scrap addition amount and the target scrap batching ratio.

[0066] In some embodiments, determining the scrap cost performance according to the target scrap batching ratio, the actual scrap yield, and the scrap costs of the at least two types of scrap includes: for each of the scraps, determine the batching ratio of the scrap according to the target scrap batching ratio, weight the scrap cost based on the batching ratio to obtain the proportional cost of the scrap; sum the proportional costs to obtain the total cost; and use the ratio of the total cost to the actual scrap yield as the scrap cost performance.

[0067] In some embodiments, the scrap cost performance is determined by the following formula:

[0068] m i is the scrap cost performance of the i-th heat, is the batching ratio of the j-th type of scrap in the i-th heat, x j is the scrap cost of the j-th type of scrap, is the actual scrap yield of the i-th heat, and n is the number of scrap types.

[0069] In some embodiments, obtaining the actual scrap yield when smelting the target steel grade in the converter includes: obtaining the furnace condition fluctuation coefficient, tapping volume, current charging material parameters of the converter, and current scrap yields of each scrap; when smelting the target steel grade for the first time in the converter, determining the actual scrap yield according to the current charging material parameters, the furnace condition fluctuation coefficient, the target scrap addition amount, and the tapping volume; when smelting the target steel grade for the Nth time in the converter, determining the actual scrap yield according to the scrap batching ratio and each current scrap yield, where N is a positive integer greater than or equal to 2.

[0070] In some embodiments, the current charging material parameters include the current addition amount and current yield of the current charging material, the current charging material includes hot metal, flux, and alloy, and determining the actual scrap yield according to the current charging material parameters, the furnace condition fluctuation coefficient, the target scrap addition amount, and the tapping volume includes: when the current charging material is hot metal, taking the product of the furnace condition fluctuation coefficient and the current yield as a weighting parameter, weighting the current addition amount according to the weighting parameter to obtain a first received amount; when the current charging material is flux and alloy, weighting the received amount according to the current yield to obtain a second received amount; summing the first received amount and each second received amount to obtain a third received amount; taking the difference between the tapping volume and the third received amount as a fourth received amount; taking the ratio of the fourth received amount to the scrap addition amount as the actual scrap yield.

[0071] In some embodiments, the current yields of the flux and the alloy are preset values. For some target steel grades (specific steel grades), the addition timing of the flux and the alloy is fixed and the addition amount is limited. To simplify the calculation process, the current yields of the flux and the alloy are set according to empirical values (preset values).

[0072] In some embodiments, when determining the actual scrap yield according to the current charging material parameters, the furnace condition fluctuation coefficient, the target scrap addition amount, and the tapping volume, the actual scrap yield is determined by the following formula:

[0073] is the actual scrap yield of the i-th heat, is the tapping volume of the i-th heat, a is the furnace condition fluctuation coefficient, is the current addition amount of hot metal in the i-th heat, Y iron is the current yield of hot metal in the i-th heat, is the current addition amount of flux in the i-th heat, Y solvent is the current yield of flux in the i-th heat, is the current addition amount of the alloy for the i-th heat, Y alloy is the current yield rate of the alloy for the i-th heat, The target scrap addition amount for the i-th heat. The above formula is obtained based on the iron element balance of the converter. The furnace condition fluctuation coefficient can be 0.8 - 1.2.

[0074] In some embodiments, the current scrap yield rate is updated by the following steps: obtaining a yield rate correction coefficient, and the actual scrap yield rates and target scrap batching ratios of at least two historical heats; obtaining the historical yield rates of each scrap according to the actual scrap yield rates and target scrap batching ratios of each historical heat; for each type of scrap, taking the difference between the historical yield rate and the current scrap yield rate as the yield rate deviation value, weighting the yield rate deviation value based on the yield rate correction coefficient to obtain a yield rate correction value, and summing the current scrap yield rate and the yield rate correction value to update the current scrap yield rate, that is, taking the current scrap yield rate and the yield rate correction value as the new current scrap yield rate.

[0075] In some embodiments, the historical yield rates of each scrap are determined by the following formula:

[0076] y = Y scrap ×B -1 , where y is the historical yield rate matrix of each scrap, y = [y scrap-1 y scrap-2 …y scrap-n T , y scrap-n is the historical yield rate of the n-th type of scrap, Y scrap is the actual scrap yield rate matrix, is the actual scrap yield rate of the j-th historical heat, B is the target scrap batching ratio matrix of each historical heat, B = [b 1 b 2 …b j T , b j is the target scrap batching ratio matrix of the j-th historical heat, is the batching ratio of the n-th type of scrap in the j-th historical heat.

[0077] ​​In some embodiments, the target scrap steel ratio of the at least two historical furnaces is obtained by: obtaining historical data of the at least two historical furnaces, the historical data being the original data of the target scrap steel ratio, and based on the historical data, eliminating the historical data of multiple historical furnaces that are linearly related to each other, to obtain the target scrap steel ratio of the at least two historical furnaces, so that the target scrap steel ratio matrix of each historical furnace is full rank, and the formula for determining the historical yield has a solution.

[0078] In some implementations, the target scrap steel proportion matrix for each historical heat is obtained by the following procedure:

[0079] for I in range(1, T+1):

[0080] if r([b 1 , b 2 , …, b i ] T )==n:

[0081] B=[b 1 , b 2 , …, b i ] T

[0082] break

[0083] Else:

[0084] if r([b 1 , b 2 , …, b i ] T )==r([b 1 , b 2 , …, b i , b i+1 ] T )

[0085] continue

[0086] Else:

[0087] B=[b 1 , b 2 , …, b i , b i+1 ]

[0088] i=i+1

[0089] return B

[0090] In some embodiments, the current scrap steel recovery rate is updated by the following formula:

[0091] y new = y m-1 + k × (y m - y m-1 ), y new is the current scrap yield matrix of each new scrap, y m-1 is the current scrap yield matrix of each scrap, y m is the historical scrap yield matrix of each scrap, and k is the yield correction coefficient. k can be between 0.55 and 0.75.

[0092] In some embodiments, the initial value of the historical scrap yield of each scrap is the laboratory test value.

[0093] In some embodiments, the step of obtaining the yield of each scrap in the current heat based on the actual scrap yield of the current heat and the target scrap batching ratio may be replaced by the following steps: obtaining the yield of each scrap in the current heat based on the actual scrap yield of the historical heat and the target scrap batching ratio.

[0094] In some embodiments, the target in-furnace material parameters include the addition amount of the target in-furnace material and the content of various components. The target in-furnace material includes raw dolomite. The target molten steel parameters include the calorific value of the molten steel. Determining the target scrap addition amount according to the target in-furnace material parameters and the target molten steel parameters includes: determining the output amount of the target out-of-furnace material according to the addition amount of the target in-furnace material and the content of various components. The target out-of-furnace material includes molten steel, slag, furnace gas, dust, and splashed metal; determining the heat income value according to the addition amount of the target in-furnace material and the content of various components and the output amount of the dust; determining the heat expenditure value according to the addition amount of the raw dolomite and the content of various components and the output amount of the target out-of-furnace material; taking the difference between the heat income value and the heat expenditure value as the waste heat value; taking the ratio of the waste heat value to the calorific value of the molten steel as the target scrap addition amount.

[0095] In some embodiments, the target furnace charge includes hot metal, and determining the output of the target tapped material according to the addition amount of the target furnace charge and the contents of various components includes: when the target tapped material is fume and splashed metal, obtaining the product percentage of the target tapped material relative to the addition amount of the hot metal, and weighting the addition amount of the hot metal based on the product percentage to obtain the output of the target tapped material; when the target tapped material is the slag and the furnace gas, for each target furnace charge, determining the product amount of the non-ferrous product and the product amount of the furnace gas according to the addition amount and the contents of various components, summing the product amounts of the non-ferrous products to obtain the total output of the non-ferrous products, taking the ratio of the total output of the non-ferrous products to the obtained non-ferrous percentage as the output of the slag, the non-ferrous percentage being the percentage of the non-ferrous product in the slag, the non-ferrous product being the product other than iron oxide and ferric oxide, and summing the product amounts of the furnace gases to obtain the output of the furnace gas; when the target tapped material is the molten steel, determining the oxidation amount of the hot metal according to the addition amount of the hot metal and the contents of various components, determining the product iron loss amount according to the output of the slag, the output of the splashed metal and the output of the slag, summing the oxidation amount of the hot metal and the product iron loss amount to obtain the material loss amount, and taking the difference between the addition amount of the hot metal and the material loss amount as the output of the molten steel.

[0096] In some embodiments, determining the product amount of the non-ferrous product and the product amount of the furnace gas according to the addition amount and the contents of various components includes: for each component, weighting the addition amount based on the content of the component to obtain the addition amount of the component, determining whether the component undergoes an oxidation-reduction reaction, if so, obtaining the reaction equation and the reaction amount of the component, determining the target product and the product amount according to the reaction amount and the reaction equation, performing the step of determining whether the target product is a solid product, if not, taking the component as the target product and the addition amount of the component as the product amount, determining whether the target product is a solid product, if so, taking the product amount as the product amount of the non-ferrous product, if not, taking the product amount as the product amount of the furnace gas.

[0097] In some embodiments, the target molten steel parameters include the contents of various components. When the target furnace charge is the hot metal, obtaining the reaction equation and the reaction amount of the component includes: for each component, taking the difference between the content of the component in the hot metal and the content in the molten steel as the content difference, and weighting the addition amount of the hot metal based on the content difference to obtain the reaction amount of the component;

[0098] Determining the target product and the product quantity according to the reaction quantity and the reaction equation includes: for each of the said components, determining whether the component undergoes at least two redox reactions. If so, for each of the redox reactions, obtaining the reaction percentage of the component undergoing the redox reaction and the target reaction equation, weighting the reaction quantity of the component based on the reaction percentage to obtain the target reaction quantity, obtaining the target product according to the target reaction equation, and obtaining the product quantity according to the target reaction equation and the target reaction quantity. If not, obtaining the target product according to the reaction equation, and obtaining the product quantity according to the reaction quantity and the reaction equation.

[0099] It should be noted that the components of the hot metal and the molten steel include carbon element, sulfur element, silicon element, manganese element, and phosphorus element. When the component is the carbon element, it undergoes two redox reactions, namely 2C + O 2 → 2CO and C + O 2 → CO 2 , when the component is the sulfur element, it also undergoes two redox reactions, namely S + O 2 → SO 2 and 2S + 2CaO → 2CaS + O 2 , when the components are silicon element, manganese element, and phosphorus element, they undergo one redox reaction respectively, which are Si + O 2 → SiO 2、 2Mn + O 2 → 2MnO and 4P + 5O 2 → 2P 2 O 5 .

[0100] In some embodiments, the target furnace-charging materials further include lime, fluorite, and lost lining. When the target furnace-charging is the fluorite and raw dolomite, the target furnace-charging materials do not undergo redox reactions. When the target furnace-charging material is lime, the target furnace-charging material undergoes redox reactions of carbon element and sulfur element. When the target furnace-charging material is lost lining, the target furnace-charging material undergoes a redox reaction of carbon element. The lost lining can be the loss amount of the furnace lining during smelting.

[0101] Exemplarily, the addition amount of the lost lining is 0.3 kg. The composition of the lost lining includes calcium oxide, silicon dioxide, magnesium oxide, aluminum oxide, iron oxide, and carbon element, and their contents are 1.2%, 3.00%, 78.80%, 1.4%, 1.6%, and 14.00% respectively. When the target product is carbon monoxide, the content of carbon element in carbon monoxide is 12 / (12 + 16) = 3 / 7, the reaction percentage is 90%, and the product amount of carbon monoxide is 0.3×14%×90%÷(3 / 7) = 0.088 kg. When the target product is carbon dioxide, the content of carbon element in carbon dioxide is 12 / (12 + 16×2) = 3 / 11, the reaction percentage is 10%, and the product amount of carbon dioxide is 0.3×14%×10%÷(3 / 11) = 0.015 kg. The product amount of the gaseous product of the lost lining is 0.088 + 0.015 = 0.103 kg, and the product amount of the solid product of the lost lining is 0.3×(1 - 14%) = 0.258 kg.

[0102] In some embodiments, determining the heat income value according to the addition amount of the target furnace charge, the contents of various components, and the output amount of the soot includes: obtaining the heat value of the hot metal, and weighting the addition amount of the hot metal based on the heat value of the hot metal to obtain the physical heat of the hot metal; determining the oxidation heat of the hot metal according to the addition amount of the hot metal and the contents of various components, and the components of the hot metal include carbon element, sulfur element, silicon element, manganese element, phosphorus element, and iron element; obtaining the product amounts of silicon dioxide and phosphorus pentoxide in the slag according to the addition amounts of the hot metal, the lime, the lost lining, the raw dolomite, and the fluorite and the contents of various components; obtaining the slag formation heat of the slag according to the product amounts of silicon dioxide and phosphorus pentoxide; determining the oxidation heat of the soot according to the product amount of the soot, and determining the oxidation heat of the lost lining according to the product amount of the lost lining; summing the physical heat of the hot metal, the oxidation heat of the hot metal, the slag formation heat of the slag, the oxidation heat of the soot, and the oxidation heat of the lost lining to obtain the heat income value.

[0103] In some embodiments, obtaining the calorific value of the hot metal includes: obtaining the melting point of pure iron, normal temperature, the first temperature decrease value generated by each element in the hot metal, and the first current temperature of the hot metal; taking the difference between the melting point of pure iron and the first temperature decrease value as the first target temperature, taking the difference between the first target temperature and normal temperature as the second target temperature, and taking the difference between the first current temperature and the first target temperature as the third target temperature; obtaining the solid calorific value, liquid calorific value, and latent heat of fusion of pig iron; weighting the solid calorific value of pig iron based on the second target temperature to obtain the first calorific value, weighting the liquid calorific value of pig iron based on the third target temperature to obtain the second calorific value, and summing the first calorific value, the second calorific value, and the latent heat of fusion of pig iron to obtain the calorific value of the hot metal.

[0104] It should be noted that the unit of the calorific value can be kJ / kg, and the unit of the addition amount of the target furnace-charging material can be kg.

[0105] In some embodiments, determining the heat expenditure value according to the addition amount of the raw dolomite, the content of various components, and the output amount of the target discharged material includes: obtaining the material calorific value and heat loss value of the target discharged material; for each target discharged material, weighting the output amount of the target discharged material based on the material calorific value to obtain the physical heat of the target discharged material; determining the heat of decomposition of the raw dolomite according to the addition amount and component content of the raw dolomite; summing the physical heat of each target discharged material, the heat of decomposition of the raw dolomite, and the heat loss value to obtain the heat expenditure value.

[0106] In some embodiments, determining at least two target scrap steel batching ratios according to the content of each scrap steel element and the target residual element content range includes: obtaining the preset batching ratio of each scrap steel; for each target element of each scrap steel, weighting the scrap steel element content based on the preset batching ratio to obtain the proportional element content of each target element; summing the proportional element contents of each target element to obtain the total element content of each target element; determining whether the total element content of each target element is within the content range of the target element. If so, taking each preset ratio as the scrap steel batching ratio, and determining whether the number of types of the scrap steel batching ratio is greater than or equal to two. If not, return to execute the step of weighting the scrap steel element content based on the preset batching ratio for each target element of each scrap steel to obtain the proportional element content of each target element; if not, update the preset batching ratio, and return to execute the step of weighting the scrap steel element content based on the preset batching ratio for each target element of each scrap steel to obtain the proportional element content of each target element.

[0107] In the present application, according to the target furnace charging parameters, target molten steel parameters, scrap steel element content, and target residual element content range, the target scrap steel addition amount and target scrap steel batching ratio are determined, that is, the theoretically calculated scrap steel addition amount and scrap steel batching ratio are obtained. Then, the actual yield during the converter smelting of the target steel grade is obtained, and the scrap steel cost performance is determined according to the target scrap steel batching ratio, the actual scrap steel yield, and the scrap steel costs of at least two types of scrap steel, that is, the scrap steel cost performance of the target scrap steel ratio is calculated, which facilitates technicians to select the target scrap steel batching ratio according to the scrap steel cost performance for actual production.

[0108] Figure 2 The block diagram of a converter scrap steel cost performance determination device in an embodiment of the present application is shown. Refer to Figure 2 According to a second aspect of the present application, a converter scrap steel cost performance determination device 100 is provided. The device includes:

[0109] A first acquisition unit 101, which acquires the scrap steel costs and scrap steel element contents of at least two types of scrap steel, as well as the target furnace charging material parameters, target molten steel parameters, and target residual element content range of the target steel grade. The scrap steel element content includes the contents of at least two target elements, and the target residual element content range includes the content ranges of the at least two target elements;

[0110] A first determination unit 102, which determines the target scrap steel addition amount according to the target furnace charging material parameters and the target molten steel parameters;

[0111] A second determination unit 103, which determines at least two target scrap steel batching ratios according to the respective scrap steel element contents and the target residual element content range. The target scrap steel batching ratio is the batching ratio of each scrap steel;

[0112] A third determination unit 104, for each target scrap steel batching ratio, acquires the actual scrap steel yield during the converter smelting of the target steel grade, and determines the scrap steel cost performance according to the target scrap steel batching ratio, the actual scrap steel yield, and the scrap steel costs of at least two types of scrap steel. Among them, the actual scrap steel yield is the total yield of the at least two types of scrap steel. When smelting the target steel grade in the converter, scrap steel is added according to the target scrap steel addition amount and the target scrap steel batching ratio.

[0113] Based on the same inventive concept, as a third aspect, the present application also provides a computer-readable storage medium, on which there is a program product capable of implementing the above-mentioned vehicle position positioning method in this specification. In some possible implementation manners, various aspects of the present application can also be implemented in the form of a program product, which includes program code. When the program product runs on a terminal device, the program code is used to cause the terminal device to execute the steps according to various exemplary embodiments of the present application described in the above "Exemplary Method" section of this specification.

[0114] Refer to Figure 3 As shown, a program product 200 for implementing the above method according to an embodiment of the present application is described. It can be a portable compact disc read-only memory (CD-ROM) and includes program code, and can run on a terminal device, such as a personal computer. However, the program product of the present application is not limited to this. In this document, a readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, device, or component.

[0115] The program product can adopt any combination of one or more readable media. A readable medium can be a readable signal medium or a readable storage medium. A readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination of the above. More specific examples (non-exhaustive list) of a readable storage medium include: an electrical connection having one or more wires, a portable disk, 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 above.

[0116] A computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, in which the readable program code is carried. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A readable signal medium can also be any readable medium other than a readable storage medium, and this readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, device, or component.

[0117] The program code included on a readable medium can be transmitted by any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination of the above.

[0118] The program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages such as Java, C++, etc., and also including conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computing device, partially on the user's device, executed as a stand-alone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device can be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., by connecting through the Internet using an Internet service provider).

[0119] As another aspect, this application also provides an electronic device capable of implementing the above method.

[0120] Those skilled in the art can understand that various aspects of this application can be implemented as a system, method, or program product. Therefore, various aspects of this application can be specifically implemented in the following forms: a complete hardware implementation, a complete software implementation (including firmware, microcode, etc.), or an implementation combining hardware and software aspects, which can be collectively referred to here as "circuitry", "module", or "system".

[0121] The following refers to Figure 4 to describe the electronic device 300 according to this embodiment of this application. Figure 4 The electronic device 300 shown is merely an example and should not impose any limitations on the functions and usage scope of the embodiments of this application.

[0122] As Figure 4 shown, the electronic device 300 is presented in the form of a general-purpose computing device. The components of the electronic device 300 may include, but are not limited to: at least one of the above-mentioned processing units 310, at least one of the above-mentioned storage units 320, and a bus 330 connecting different system components (including the storage unit 320 and the processing unit 310).

[0123] Among them, the storage unit stores program code, and the program code can be executed by the processing unit 310, so that the processing unit 310 executes the steps according to various exemplary embodiments of this application described in the "Embodiment Method" section of this specification above.

[0124] The storage unit 320 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 321 and / or a cache storage unit 322, and may further include a read-only storage unit (ROM) 323.

[0125] The storage unit 320 may also include a program / utilities 324 having a set (at least one) of program modules 325. Such program modules 325 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment.

[0126] The bus 330 may represent one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus structures.

[0127] The electronic device 300 may also communicate with one or more external devices 400 (such as a keyboard, a pointing device, a Bluetooth device, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 300, and / or may communicate with any device that enables the electronic device 300 to communicate with one or more other computing devices (such as a router, a modem, etc.). Such communication may be through an input / output (I / O) interface 350. Also, the electronic device 300 may communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter 360. As Figure 4 shown, the network adapter 360 communicates with other modules of the electronic device 300 through the bus 330. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 300, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0128] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope and spirit of the present application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. In addition, each functional unit may be integrated in one processing unit, may exist physically separately as individual units, or two or more units may be integrated in one unit.

[0129] In several embodiments provided by this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of the units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of units or modules can be in an electrical or other form.

[0130] The units described as separate components may or may not be physically separated. The components serving as control devices may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0131] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The foregoing storage medium includes: USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs and other various media that can store program codes.

[0132] The above are only the embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

1. A method for determining the cost performance of converter scrap steel, characterized in that: The method comprises: Obtaining the scrap steel costs and scrap steel element contents of at least two types of scrap steel, as well as target furnace material parameters, target molten steel parameters, and target residual element content range of the target steel grade, wherein the scrap steel element content includes the contents of at least two target elements, and the target residual element content range includes the content range of the at least two target elements; Determine the target scrap steel addition amount according to the target furnace material parameters and the target molten steel parameters; Determine at least two target scrap steel proportions according to the scrap steel element content and the target residual element content range, wherein the target scrap steel proportion is the proportion of each scrap steel; For each of the target scrap steel proportions, the actual scrap steel recovery rate when the target steel grade is smelted in a converter is obtained, and the scrap steel cost performance ratio is determined according to the target scrap steel proportion, the actual scrap steel recovery rate and the scrap steel costs of the at least two types of scrap steels, wherein the actual scrap steel recovery rate is the total recovery rate of the at least two types of scrap steels, and when the target steel grade is smelted in a converter, scrap steel is added according to the target scrap steel addition amount and the target scrap steel proportion.

2. The method for determining the cost performance of converter scrap according to claim 1, characterized in that: The step of determining the scrap steel cost performance ratio according to the target scrap steel batching ratio, the actual scrap steel recovery rate and the scrap steel costs of the at least two types of scrap steel comprises: For each type of scrap steel, determine the scrap steel proportion according to the target scrap steel proportion, and weight the scrap steel cost based on the proportion to obtain the scrap steel proportion cost; Summing up the proportional costs to obtain the total cost; The ratio of the total cost to the actual scrap steel recovery rate is taken as the scrap steel cost performance ratio.

3. The method for determining the cost performance of converter scrap according to claim 1, characterized in that: The actual scrap steel recovery rate when the target steel grade is smelted in a converter is obtained, including: Obtaining the furnace condition fluctuation coefficient, steel output, current input material parameters and current scrap steel recovery rate of each scrap steel of the converter; When the target steel grade is smelted in a converter for the first time, the actual scrap steel recovery rate is determined according to the current material parameters fed into the furnace, the furnace condition fluctuation coefficient, the target scrap steel addition amount and the steel output amount; When the target steel grade is smelted in a converter for the Nth time, the actual scrap steel recovery rate is determined according to the scrap steel proportion and each current scrap steel recovery rate, where N is a positive integer greater than or equal to 2.

4. A method for determining the cost performance of converter scrap according to claim 3, characterized in that: The current furnace material parameters include the current amount of the current furnace material added and the current yield rate, the current furnace material includes molten iron, flux and alloy, and the actual scrap steel yield rate is determined according to the current furnace material parameters, the furnace condition fluctuation coefficient, the target scrap steel addition amount and the steel output amount, including: When the current material entering the furnace is molten iron, the product of the furnace condition fluctuation coefficient and the current yield rate is used as a weighted parameter, and the current addition amount is weighted according to the weighted parameter to obtain a first yield; When the current materials entering the furnace are flux and alloy, weighting the yield according to the current yield rate to obtain a second yield; summing the first harvested amount and each of the second harvested amounts to obtain a third harvested amount; The difference between the steel output amount and the third received amount is used as the fourth received amount; The ratio of the fourth recovered amount to the scrap steel added amount is taken as the actual scrap steel recovery rate.

5. The method for determining the cost performance of converter scrap according to claim 3, characterized in that: Update the current scrap steel recovery rate by the following steps: Obtain the recovery rate correction factor, as well as the actual scrap steel recovery rate and target scrap steel batch ratio of at least two historical heats; Obtaining the historical recovery rate of each of the scrap steels according to the actual scrap steel recovery rate of each of the historical heats and the target scrap steel batching ratio; For each type of scrap steel, the difference between the historical yield and the current scrap steel yield is taken as the yield deviation value, the yield deviation value is weighted based on the yield correction coefficient to obtain the yield correction value, the current scrap steel yield and the yield correction value are summed to update the current scrap steel yield.

6. The method for determining the cost performance of converter scrap according to claim 1, characterized in that: The target furnace material parameters include the target furnace material addition amount and the content of various components, the target furnace material includes raw dolomite, the target molten steel parameters include the calorific value of molten steel, and the target scrap steel addition amount is determined according to the target furnace material parameters and the target molten steel parameters, including: Determining the output of target out-of-furnace materials according to the added amount of the target in-furnace materials and the contents of various components, wherein the target out-of-furnace materials include molten steel, slag, furnace gas, smoke and splashed metal; Determining the heat income value according to the amount of the target furnace material added, the content of various components and the output of the smoke; Determining the heat expenditure value according to the amount of raw dolomite added, the content of various components and the output of the target discharged material; Taking the difference between the heat income value and the heat expenditure value as the waste heat value; The ratio of the waste heat value to the calorific value of the molten steel is used as the target scrap steel addition amount.

7. The method for determining the cost performance of converter scrap according to claim 1, characterized in that: Determining at least two target scrap steel proportions according to the scrap steel element contents and the target residual element content range comprises: Obtaining a preset proportion of each of the scrap steels; For each target element of each scrap steel, weighting the scrap steel element content based on the preset batching ratio to obtain the proportional element content of each target element; Sum the content of each element in the ratio to obtain the total content of each target element; In the case of judging whether the total element content of each of the target elements is within the content range of the target elements, if so, taking each of the preset proportions as the scrap steel batching proportions, judging whether the types of the scrap steel batching proportions are greater than or equal to two, if not, returning to execute the step of weighting the scrap steel element content based on the preset batching proportions for each of the target elements of each of the scrap steels to obtain the proportional element content of each of the target elements; If not, update the preset proportion, return to execute the step of weighting the element content of the scrap steel for each target element of each scrap steel based on the preset proportion, and obtain the proportional element content of each target element.

8. A device for determining the cost performance of converter scrap steel, characterized in that: The device comprises: A first acquisition unit is configured to acquire scrap steel costs and scrap steel element contents of at least two types of scrap steel, as well as target furnace material parameters, target molten steel parameters, and a target residual element content range of a target steel grade, wherein the scrap steel element content includes the contents of at least two target elements, and the target residual element content range includes the content range of the at least two target elements; A first determination unit determines a target scrap steel addition amount according to the target furnace material parameters and the target molten steel parameters; A second determination unit determines at least two target scrap steel batching ratios according to the scrap steel element content and the target residual element content range, wherein the target scrap steel batching ratio is the batching ratio of each scrap steel; The third determination unit obtains, for each of the target scrap steel proportions, an actual scrap steel recovery rate when the target steel grade is smelted in a converter, and determines the scrap steel cost performance ratio according to the target scrap steel proportion, the actual scrap steel recovery rate and the scrap steel costs of the at least two scrap steels, wherein the actual scrap steel recovery rate is the total recovery rate of the at least two scrap steels, and when the target steel grade is smelted in a converter, scrap steel is added according to the target scrap steel addition amount and the target scrap steel proportion.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer program includes executable instructions, and when the executable instructions are executed by a processor, the method described in any one of claims 1 to 7 is implemented.

10. An electronic device, characterized in that: include: one or more processors; A memory for storing executable instructions of the processor, wherein when the executable instructions are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 7.

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