Advanced Methods for Kiln-Shell Monitoring to Optimize the Waelz Process for Zinc Recycling

The recycling of zinc in the Waelz process is an important part efficient use resources steel processing cycle. pyro-metallurgical zinc-containing wastes takes place a rotary kiln. Various measured variables are available to monitor process. temperature kiln-shell analyzed by infrared kiln-shell-scanner. In this paper, methods presented which eliminate external weather-related disturbances on kiln-shell-scanner using weather model and extend monitoring regularly necessary melting remove accretions. For purpose, adapted sigmoid estimation introduced for process, provides new information about current status forecast further development As assistance system plant operator, enables execution reduces downtimes.