Method for forecasting sublance process carbon content of converter

Abstract

The invention provides a method for forecasting sublance process carbon content of a converter. The method comprises the following steps of: reading a communication message of a sublance test result of a sublance PLC (programmable logic controller) through a process carbon content forecasting computer, enabling a liquidus parameter generation module to calculate process assay carbon content Ca according to liquidus temperature T1, contrasting the communication message of the state of the converter of a converter PLC with the target state of the converter through the process carbon content forecasting computer, and when the communication message of the converter is equivalent to the target state of the converter, calculating a liquidus parameter value through the process carbon content forecasting computer and saving the liquidus parameter value in the process carbon content forecasting computer. According to the method provided by the invention, the automatic adaptation to the changes of components in molten iron of the converter can be realized, and the sublance process carbon content can be precisely calculated, so that the error of the sublance process carbon content can be reduced from about 0.12% to 0.02%; and when the carbon content tested by a sublance instrument is greater than 0.60% or less than 0.20%, automated steelmaking control can be still adopted, thus the adaptability of an automated steelmaking system is enhanced.

Description

technical field [0001] The invention belongs to the field of steelmaking technology, and in particular relates to a method for predicting carbon content in a secondary lance process adaptive to changes in the composition of molten iron in a converter. Background technique [0002] Oxygen top-blown converter has the characteristics of high production efficiency and low cost. With the progress of modern technology in the factory, the sub-lance system has become a major steelmaking equipment. And with the development of automated steelmaking technology, the accuracy of the test results of the sub-gun process is increasingly required. [0003] At present, the error of carbon content in the process of my country's secondary gun test instrument is relatively large, about 0.12%, which cannot meet the accuracy requirements of automated steelmaking and restricts the promotion and application of automated steelmaking technology. [0004] The study found that when the composition of m...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for predicting the carbon content of the sub-lance process that can automatically adapt to changes in the composition of the converter molten iron, thereby solving the problem of inaccurate carbon content in the sub-lance instrument test process when the composition of the converter molten iron changes, and improving the accuracy of the sub-lance instrument test data Enhance the adaptability of the automated steelmaking system

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