Research On Tapping Process On The Convertor Monitoring System

In modern converter steelmaking process, the quality of liquid steel is the promise of that of the steel products.while the slag is the main cause of pollution of liquid steel, it is very severe to prevent slag from flowing from one proeess to the next proeess, that just is Slag Detecting,which includes two main phases:converter-landle slag detecting and landle-tundish slag detecting.This subject focuses on the former.The difference of radiation coefficient of liquid steel and slag is used for slag carry-over detection during tapping for BOF.Radiation budget of Infrared Rays is controlled by the construction, temperature and surface features of an object.According to fundamental law of infrared radiation,this article discussed the basic law of infrared radiation deeply, which led to the discussion of the actual object emissivity and infrared thermal imaging system composition, and then basing on the basic parameters of the actual radiation about detected target, we implemented a series of calculations and choosed the infrared detector.With advancing technique of infrared image detection,a method for slag carry-over detection system during tapping for BOF Based on Infrared image recognition is put forward in the article,hardware platform and software system is built,feature extraction of thermal infrared image is applied to get character when the slag appears,this can be acted as the foundation of slag detection.Finally, this acticle introduced the system software detailedly, including function and design, the choosing of software application platform and development tools and infrared image slag detection algorithm processes. On this basis, it further elaborated the key technologies, such as multithread technology and structure of the Filter Graph. Then it described the software module division in detail and depicted the overall software flow chart.Simulation and field application demonstrated that the slag detection system is faster recognition and higher degree of accuracy.The identification and monitoring for slag detection system during tapping for BOF is fruitful, the effect of a real-time monitoring and alarming system is good.