Current Situation and Development of Refractories for Clean Steel Production

The low cost and high efficient clean steels metallurgy has been focused much attention in China.Among the factors affecting the cleanliness and consequent quality of steel products,refractories are one of the key factors.Meanwhile the restriction of resource,energy and environment is getting stronger,thus the improvement of refractories becomes much more important.In this paper,refractories selection principle for clean steel production according to their thermodynamic features was explained;refractories for tundish and flow control in continuous casting,which play important roles in prohibiting secondary contamination of molten steel,were introduced.Moreover,new development of low-carbon and carbon-free refractory materials was also described.