System and method for on-line control of molten steel temperature in LF refining

Abstract

The invention discloses a system and a method for on-line control of a molten steel temperature in LF refining and belongs to the technical field of metallurgy production and control. The system comprises an information acquisition module, a heating judgement module, an electrode heating module, a steel ladle lining heat-dissipation module, an added alloy judgement module, an alloy heat effect module, an added slag judgement module, a slag heat effect module, an argon-blown slag layer judgement module, a molten steel thermal-radiation module, an argon heat-absorption module, a slag layer heat-radiation module, a temperature calculating module, a temperature correction judgement module, a temperature correction module, a temperature forecast module and a temperature control module. The method comprises calculating molten steel temperature variable quantity produced by heating and heat radiation cooling processes in LF refining to obtain a molten steel real-time temperature, controlling the heating process by adjustment of heating time so that the molten steel real-time temperature reaches a molten steel target temperature, and controlling the molten steel real-time temperature in an allowable accuracy range in the LF refining scene.

Description

technical field [0001] The invention belongs to the technical field of production and control of metallurgical processes, and in particular relates to a system and method for on-line controlling the temperature of molten steel in an LF refining process. Background technique [0002] LF (LADLE FURNACE) ladle refining furnace is a commonly used refining equipment in major steel mills. It plays a very good role in adjusting the production rhythm between the primary smelting furnace and the continuous casting station, and has the ability to adjust the temperature of molten steel and strengthen desulfurization. , white slag refining, alloy fine-tuning four unique metallurgical functions. The LF refining furnace is the only refining station that can increase the temperature of the molten steel after the converter is tapped, and the temperature of the molten steel is a key factor that affects the continuous casting process and the quality of the finished product. Therefore, many me...

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Problems solved by technology

[0006] At present, metallurgists have done a lot of research on this part of the content, most of which are limited to the stage of offline models, and there are few temperature models that can realize online forecasting and guide on-site production

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