Prediction system and method for judging converter steelmaking endpoint temperature on basis of flame images

Abstract

The invention provides a prediction system and method for judging converter steelmaking endpoint temperature on the basis of flame images. The prediction system comprises an image acquiring unit, an image processing module, a temperature prediction module and an endpoint prediction module; the image acquiring unit is used for continuously acquiring original furnace mouth flame images; the image processing module is used for processing the continuously acquired original furnace mouth flame images; the temperature prediction module is used for predicting the in-furnace smelting temperature corresponding to each piece of feature data in a current furnace mouth flame feature data set; and the endpoint prediction module is used for predicting the blowing endpoint on the basis of the smelting endpoint temperature corresponding to a temperature change curve. According to the prediction system, temperature prediction is conducted by adopting a flame image recognization mode, safety and convenience are achieved, continuous temperature detection and real-time prediction of the temperature curve can be realized, the accuracy of the converter endpoint temperature is improved by using the flame image recognition mode, and compared with the mode of judging the smelting endpoint only depending on artificial experience, the temperature precision is + / -15 DEG C, and the secondary blowing proportion is reduced by 30%.

Description

technical field [0001] The invention relates to the field of steelmaking automation control, in particular to a prediction system and method for judging the end temperature of converter steelmaking based on flame images. Background technique [0002] The development of the iron and steel industry requires stricter control of each production process to meet the high requirements for product quality and production efficiency, while continuously minimizing production costs. At present, the long-process steelmaking process requires the use of converters to smelt molten steel. The molten steel temperature is an important parameter to judge whether the molten steel is qualified. Different steel types have strict requirements on the tapping temperature. Even repeated blowing will affect the production efficiency. [0003] Generally, most of the converters above 200t are equipped with a sub-lance system, which can be used for temperature measurement and sampling without turning the...

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Problems solved by technology

[0004] However, the existing smelting end point judgment relies on manual judgment of the color, shape, transparency, etc. If the furnace temperature is not suitable, the converter needs to be turned back for supplementary blowing, which reduces production efficiency. At the same time, manual multiple measurements increase the risk of safety accidents

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