Application of Tudish Metallurgical Technology in Jinan Steel's Ultra-low Head Slab Caster

In order to resolve the problems of ultra-low head slab caster like tundish small capacity,short retain time in tundish,unreasonable flow field,uneasy removing of inclusion,secondary oxidation heavy,through taking the methods like the tundish expanding capacity reconstruction,optimizing the flow field of tundish,the applying of continuous temperature measurement,nano-fibers insulation blank technique and the fining slag of tudish technology and so on,the aim of inclusion removing was reached.The total oxygen contain in steel was decreased by 20.5×10-6 averagely and the average temperature drop in the tundish was reduced by 3.3 ℃.