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Secondary Refining
   
The continuing drive towards improved steel quality has influenced major improvements in iron and steel refining techniques. The trend is towards treatment external to the primary melting furnace, i.e. in the ladle (and more recently the tundish), where the steel quality is improved using various techniques.

The increasing acceptance of external treatment of steel has resulted in the development of ladle and tundish metallurgy, with attendant demands for better quality refractories. Through the use of appropriate refractories and metal refining processes, many steel makers have the capability to produce steel in the ladle, which is suitable for even the most demanding applications.

 

Availability of plant, steel cleanliness and lower costs are the steelmaker´s key objectives. Since the quality of the refractories used to play a significant role in meeting these three demands, Foseco Steel has developed a range of refractories including low and ultra low thixotropic refractory castables known as FOSCAST. These castables may be preformed or cast in-situ to suit particular requirements. FOSCAST products include:

Secondary Refining
FOSCAST™ Collector nozzle
FOSCAST™ RH snorkels and CAS-OB bells
FOSCAST™ Steel lances
NOZOLEX™ Ladle or tundish nozzle well filler
RADEX™ Ladle and tundish insulating cover
SLAX-DEOX™ Steel slag conditioner