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A method for real-time forecasting of components in electric arc furnace smelting process based on mechanism model

A technology of smelting process and mechanism model, applied in the field of electric arc furnace steelmaking, which can solve the problems of neglecting process composition control, lack of intuitive methods for composition prediction, and short electric arc furnace steelmaking process.

Active Publication Date: 2021-02-26
CENT SOUTH UNIV
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  • Application Information

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Problems solved by technology

Due to the short and fast-paced electric arc furnace steelmaking process, process composition control is usually ignored, and at the same time, there is a lack of an intuitive method for predicting composition in the smelting process as a support

Method used

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  • A method for real-time forecasting of components in electric arc furnace smelting process based on mechanism model
  • A method for real-time forecasting of components in electric arc furnace smelting process based on mechanism model
  • A method for real-time forecasting of components in electric arc furnace smelting process based on mechanism model

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Embodiment Construction

[0064]A method for judging the priority of element oxidation by calculating the Gibbs free energy of the element oxidation reaction, combined with the dynamic conditions of molten pool stirring, and calculating the composition change in real time according to the amount of oxygen blown and the heat provided by the arc. Include the following steps:

[0065] Step 1: Input the amount and composition of initial metal materials (C, Si, Mn, Fe), slag amount and composition (CaO, SiO 2 、Al 2 o 3 , MgO, MnO, FeO, Fe 2 o 3 ); as the initial calculation condition of the model;

[0066] Step 2: Calculate the non-standard Gibbs free energy of element oxidation reaction based on the collected slag composition data and molten steel composition data, and determine the oxidation priority of elements. The non-standard Gibbs free energy calculation formula is:

[0067] ΔG=ΔG Θ +RTlnJ

[0068] Among them, ΔG is the non-standard state Gibbs free energy change of the reaction, R is the ther...

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Abstract

The invention discloses a method for real-time forecasting of components in the electric arc furnace smelting process based on a mechanism model. The invention is based on the principle of the oxidation reaction behavior of main elements in the steelmaking process of the electric arc furnace, combined with the dynamic conditions of the molten pool stirring, and the electric arc furnace The area of ​​the molten pool is divided, and the content of the main components of the molten pool is calculated by using the method of cyclic operation, which provides a theoretical and direct method for the real-time prediction of the components in the electric arc furnace steelmaking process.

Description

technical field [0001] The invention belongs to the field of electric arc furnace steelmaking, in particular to a method for real-time forecasting of components in the electric arc furnace smelting process based on a mechanism model. Background technique [0002] In the process of electric arc furnace steelmaking, the composition and temperature of molten steel should be adjusted according to the elemental composition of the molten pool to meet the requirements of tapping. In the actual production process of iron and steel enterprises, the control of the composition of the molten pool is realized based on the experience and judgment of the workers combined with the end point control, which is not intuitive. Due to the short and fast-paced electric arc furnace steelmaking process, the process composition control is usually ignored, and at the same time, there is a lack of an intuitive method to predict the composition in the smelting process as a support. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F17/18G06F119/08
Inventor 杨凌志朱荣姜涛李光辉郭宇峰王柏惠范晓慧黄柱成杨永斌张元波李骞陈许玲朱忠平彭志伟徐斌饶明军甘敏易凌云王超谢鑫
Owner CENT SOUTH UNIV