2019 Pittsburgh AISTech

Sessions Speakers Exhibitors Products Press Releases Show Specials Floor Plan Buzz

Growth Mechanism of Clog Materials in SEN During Continuous Casting of Ti-Added ULC Steel (Room 411)

Clog materials found in the inner wall of submerged-entry nozzle (SEN) collecting after continuous casting of Ti-ULC steel are typically composed of frozen steel and aluminate inclusions. From a thermodynamic point of view, chemical reactions inside the nozzle refractory and the interfacial reaction between the nozzle and the liquid steel could generate a mixture of alumina and liquid oxide containing FetO, Al2O3 and TiOx. These would act as a precursor of further deposits inside the SEN. A series of thermodynamic and experimental investigations was carried out and will be presented that may provide insight into the nozzle clogging phenomena.