Method for starting dynamic control model of converter based on static detection of simulated sublance

Abstract

The invention discloses a method for starting a dynamic control model of a converter based on static detection of a simulated sublance. The method comprises the following steps: selecting a static blowing mode and controlling the foaming degree of furnace slag when static state control is finished; detecting the crystallization temperature of molten steel by using the simulated sublance; obtaining carbon content in the molten steel according to the crystallization temperature of the molten steel; detecting an actual temperature value of the molten steel by using a temperature measuring lance; transmitting carbon content data in the molten steel and the actual temperature value of the molten steel to a computer steelmaking mathematical model to carry out dynamic model calculation, calculating a setting value of a cooling agent or a heating agent needing to be added and sending the setting value to a basic automatic first-grade machine to carry out control execution; and controlling by the basic automatic first-grade machine according to a dynamic computation result to correct a blowing process and realize a finishing point C-T target value. According to the method disclosed by the invention, computer dynamic control steelmaking of the converter is realized by detecting relevant data through the simulated sublance, measuring the temperature by the temperature measuring lance and starting the dynamic control model of the converter.

Description

technical field [0001] The invention relates to the dynamic control of a converter in steelmaking, in particular to a method for starting a dynamic control model of a converter based on the static detection of a simulated sub-lance, and belongs to the field of automatic steelmaking of the converter. Background technique [0002] After the 1980s, foreign advanced iron and steel plants gradually studied the use of converter dynamic or fully automatic control. Only Baosteel, Wuhan Iron and Steel, Shougang and other large-scale steel enterprises in China have adopted dynamic control technology for some converters. Among them, the main one is the dynamic control of sub-lance, and a few is the dynamic control of furnace gas analysis. At present, among the 426 small and medium-sized converters below 100t and 58 converters above 100t that are under construction or are about to be put into production in China, most of them still use empirical steelmaking due to technical, equipment, ...

AI Technical Summary

Problems solved by technology

However, the harsh environment of the converter site affects the normal operation of the bombing equipment, and whether the warhead is put into the molten steel as required is also affected by the slag condition. If the slag is sticky and the warhead does not enter the molten steel, the detection will fail.

Moreover, TCO bombing technology can only detect C and T at the end point. The bombing manufacturer has not yet developed a high-carbon warhead that measures the carbon temperature at static time, so it cannot detect C and T at static time, and cannot start the dynamic control system for computer-controlled steelmaking.

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