Method for determining the amount of covering material used in electric furnaces.

Abstract

This invention provides a method for determining the amount of capping material used in an electric furnace, which enables more accurate adjustment of the steel output by adjusting the amount of capping material, based on a prediction of the steel output amount using scrap material and other factors. [Solution] For steel types that are melted and manufactured through multiple charging processes, including a charging process for the covering material, the representative values ​​of each scrap blending amount and each electric furnace factor data are used as explanatory variables in a regression model, and the amount of steel produced is used as the objective variable of the regression model. The regression model is trained by providing training data, and a predicted value of the amount of steel produced is obtained when the blending amount of the covering material is changed for the trained regression model. The final blending amount of the covering material is determined from the range of blending amounts of the covering material that minimizes the error between the predicted amount of steel produced and the planned amount of steel produced.

Claims

1. A method for determining the amount of capping material used in an electric furnace, for a steel type that is melted and manufactured through multiple charging processes, including a capping material charging process, in which the amount of each scrap material used and representative values ​​of each electric furnace factor data are used as explanatory variables in a regression model, and the amount of steel tapped is used as the objective variable of the regression model, the regression model is trained by providing training data to the regression model, a predicted value of the amount of steel tapped is obtained when the amount of capping material used is changed for the trained regression model, and the final amount of capping material is determined from the range of capping material amounts that minimizes the error between the predicted amount of steel tapped and the planned amount of steel tapped.

2. A method for determining the amount of covering material for an electric furnace according to claim 1, wherein a range of covering material amounts is obtained within the range of covering material amounts that minimizes the error with the planned amount of steel to be produced, and further within the range of covering material amounts within which the component values ​​of a predetermined element in the steel grade are within the target range, and the final amount of covering material is determined from said range.

3. The method for determining the amount of covering material for an electric furnace according to claim 1, wherein the electric furnace factors are the total amount of O2 used and at least one of the amount of SiC used, the amount of carbon injection used, the amount of CaO used, and the amount of breeze used during one operation.

4. The method for determining the amount of covering material for an electric furnace according to claim 1, wherein the total weight obtained by adding up the respective amounts of each blend is further used as an explanatory variable in the regression model.

Images