fused calcium aluminate (premelted calcium aluminates residue) is mainly used for separating the impurity elements such as sulfur and oxygen in ladle refining of lf furnace, open hearth furnace and the converter furnace, and it can reduce the content of harmful elements and impurities, which is applicable for general carbon steel, high carbon steel, high and low alloy steel. its applications have already been mature in some foreign countries, such as south korea, japan, the united states and the developed european countries. specification chemical composition(%) al2o3 cao sio2 fe2o3 tio2 mgo a 36¡ª45 48¡ª56 ¡ü3.5 ¡ü1.5 ¡ü1.8 ¡ü1.0 b 38¡ª41 47¡ª50 ¡ü4.0 ¡ü2.0 ¡ü2.0 ¡ü1.0 c 42¡ª45 34¡ª40 ¡ü5.5 ¡ü2.0 ¡ü2.5 ¡ü1.0 d 52¡ª55 33¡ª35 ¡ü6.0 ¡ü2.0 ¡ü2.5 ¡ü1.0 e¡ý62 27¡ª30 ¡ü6.0 ¡ü2.5 ¡ü2.5 ¡ü1.0 if you have any requirement, please don't hesitate to inform us. melodyyangmei(at)hotmail.com. hope we can establish stable long terms business relationship with each other. sales manager: melody yang tel:86-379-65285886-804 mobile phone:13849906514 fax:86-379-65285889 http://www.ycrs.com.cn