Dust formation in a steelmaking reactor

To control the generation of dust in a steelmaking reactor, it is necessary to understand the underlying physical mechanisms. An experimental device h as been developed to study the main emission mechanism, i.e. the projection s from bursting bubbles. We visualized the burst on liquid steel and quanti fied the subsequent emission. The chemical evolution inside the fume exhaus t system is simulated by thermodynamic calculations : the key parameters fo r controlling dust mineralogy are the Fe/Zn ratio, the oxygen activity (P-C O2/P-CO) and the temperature evolution.