SlagDetect - Slag detection system with LW infrared camera for highest detection reliability
Steel and slag have different features with regard to radiation physics in the infrared spectral range. Thus, by means of an infared camera, it is possible to determine without any contact and in real time which of both materials is the current main constituent of the tapping, respectively the deslagging stream coming out of the converter or an electric furnace. For this purpose, the relevant process is constantly monitored with an infared camera whose sensitivity range involves a long-wave infrared range of (8 ... 12) µm. In this wavelength range appears the highest contrast between steel and slag resulting in the best possible selectivity on material detection.