Refining furnace decarburization end point detection method and detection system

Abstract

The invention discloses a refining furnace decarburization end point detection method. The refining furnace decarburization end point detection method comprises the following steps that 1, flue gas components and flue gas flow in a refining furnace are acquired, and the total decarburization amount is calculated; 2, the content of each element in a charging raw material of the refining furnace and the target content of each element in molten steel are acquired, and the total amount of carbon elements added in the vacuum decarburization treatment process of the refining furnace is calculated; 3, the target carbon content of the refining furnace after vacuum decarburization is calculated according to the target molten steel carbon content and the total amount of the carbon elements added in the vacuum decarburization treatment process of the refining furnace; and 4, the current molten steel carbon element content is calculated according to the carbon element content in alloy added in the vacuum decarburization treatment process, the total decarburization amount and the mass of the molten steel entering the station, and whether vacuum decarburization of the refining furnace is finished or not is judged according to the current molten steel carbon element content and the target carbon content. The refining furnace decarburization end point detection method can predict the carbon content of the molten steel in real time and judge a decarburization end point.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a method and system for detecting the decarburization endpoint of a refining furnace. Background technique [0002] With the development of manufacturing industries such as automobiles, home appliances, and machinery, there is an increasing demand for low-carbon and ultra-low-carbon steels. Decarburization ability has become one of the methods commonly used in the production of low carbon steel at home and abroad. [0003] During the smelting process of the RH vacuum refining device, there is no direct and rapid method to measure the carbon content in molten steel, and the decarburization end point is generally controlled according to field operation experience. In order to ensure the decarburization effect, the method of prolonging the decarburization time will easily cause problems such as poor control accuracy of the decarburization end point and prolonged refining time, ...

AI Technical Summary

Problems solved by technology

In order to ensure the decarburization effect, the method of prolonging the decarburization time is likely to cause problems such as poor control accuracy of the decarburization end point and prolonged refining time, which will have a serious impact on steel production efficiency, product quality, and energy and material consumption.

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