Real-time determining method and system for carbon content and temperature value of molten steel in steelmaking later stage

Abstract

The invention discloses a real-time determining method and system for carbon content and a temperature value of molten steel in a steelmaking later stage. The method comprises the following steps of collecting spectral information of flame at the furnace mouth in real time in the steelmaking later stage; and inputting the spectral information into a pre-established second prediction model to obtain a real-time value of the carbon content and the temperature value of the molten steel, wherein the second prediction model is a real-time prediction model obtained due to training by taking the pre-acquired spectrum information and the carbon content and temperature value of the molten steel corresponding to the spectrum information as samples, taking the spectral information as input, and taking the real-time carbon content and temperature value of the molten steel corresponding to the spectrum information as output; and the real-time carbon content and temperature value of the molten steelcorresponding to the spectrum information is derived by using a material balance and chemical balance principle after obtaining the carbon content and the end temperature value of the end molten steel. The method and system provided by the invention can improve the prediction reliability and accuracy of the carbon content and temperature value of molten steel of small and medium-sized convertersin which the sub-gun cannot be installed.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a real-time determination method and system for the carbon content and temperature value of molten steel in the later stage of steelmaking. Background technique [0002] The iron and steel industry is the pillar industry of my country's national economy. In 2017, my country's crude steel output reached 800 million tons, exceeding the total output of developed countries. Without a strong steel industry, there would be no high-speed rail and aircraft carriers, no high-quality materials for manufacturing, and no basic steel for large-scale capital construction. The technical core of the "Made in China 2025" national strategy is intelligent manufacturing. As a representative of complex process industries, the iron and steel industry has more complex connotations of intelligent manufacturing, and its level of intelligent manufacturing is more industry-leading and exemplary. [...

AI Technical Summary

Problems solved by technology

[0004] In terms of intelligent steelmaking, small and medium-sized converters are mostly based on dynamic control of flue gas analysis. However, because the detection accuracy is affected by factors such as the sensitivity of flue gas analysis components, the reliability of flue gas purification and dust removal devices, the reliability of data and There is a big gap in the accuracy rate compared with the secondary gun control

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