高磷生铁脱磷试验

Experimental Research of High-Phosphorus Pig Iron Dephosphorization

在实验室高温箱式炉的条件下,以CaO-Fe2O3-CaF2为主要的渣系,对脱磷剂的配比、加入量、熔化温度、碱度进行试验研究。试验结果表明,温度为1 450℃的条件下,w(CaO)/w(Fe2O3)=2.5,碱度为2.5,脱磷剂加入量为12%,并加入一定量的助熔剂,从而使生铁磷质量分数由原来的1.02%降低到0.47%。最后,调整脱磷剂的用量,得出脱磷剂的最佳配比。

With CaO-Fe2 O3-CAF2 system slag as dephosphorization, the influencing factors of such for ratio, tempera- ture,addition rate, basicity of slag was studied in laboratory GSL for dephosphorization. As a result, when the w（CaO）/w（Fe2 O3 ）= 2.5,the basicity is 2.5, the flux were added in an amount of 12 %and addition some flux rate, so that the phosphorus content decreased to 0. 47% in temperate conditions of 1450 ℃. Finally,the best ratio was de- rived dephosphorization by adjusting the amount of flux.