一、前言如在另几个报告中介绍的,顶、底吹(LD-OTB)法具有低于0.2%C 的低碳钢生产的很多优点。但是,用此方法,就生产高碳优质钢([C]0.4%,[P]0.015%)来说,在吹炼期间,因为熔池中钢水的搅拌力强,渣中总铁量减少,所以,要确保高脱磷率是困难的。 I. INTRODUCTION As described in a few other reports, the LD-OTB method has many advantages of producing mild steel below 0.2% C. However, with this method, the total iron content in the slag is reduced during the blowing due to the strong stirring of the molten steel in the bath for the production of high carbon high quality steel ([C] 0.4%, [P] 0.015% Therefore, it is difficult to ensure high dephosphorization rate.