VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG DER SCHAUMSCHLACKENHÖHEN BEIM FRISCHVORGANG IN EINEM BLASSTAHLKONVERTER

摘要

Determination of the height of foamed slag during the refining process in a steel converter (1) comprises recording and evaluating, as a variable for the foaming slag (9, 9'), the sound emissions (8) from the steel converter in the region of the converter opening (3) using a microphone (11). The higher frequencies above 1 kHz are used to characterize the foamed slag heights. An Independent claim is also included for a device used for carrying out the above process comprising a measuring device (10) consisting of a microphone and an evaluation device (13). Preferably the microphone utilizes a selective amplification effect for high sound frequencies to obtain a high signal/noise ratio with amplification of the signal and to obtain a high direction effect during sound measurement.