【摘要】 在实验室小型试验炉内,用CaO-Al2O3-SiO2基精炼渣进行了钢水脱硫的试验,主要研究了精炼渣碱度、渣中Al2O3和CaF2对钢水脱硫的影响。结果表明:精炼渣碱度在2.85～3.45时,脱硫率在80%以上;精炼渣中w(Al2O3)=24%时,脱硫率为83.7%;随精炼渣中CaF2含量的增加,脱硫率先增大后降低。最佳精炼渣组成为:w(CaO)/w(SiO2)=3.0、w(CaF2)=7%、w(MgO)=6%、w(Al2O3)=24%。更多还原

【Abstract】 The experiment on desulfurization of molten steel using CaO-Al2O3-SiO2 based refining slag is carried in a small furnace in the laboratory.The effects of refining slag basicity,Al2O3,CaF2 on desulfurization of molten steel are studied.The results show that the dusulfurization rate is over 80 % when the refining slag basicity is changed from 2.85 to 3.45.However,when the mass fraction of Al2O3 in refining slag is 24 %,the desulfurization rate is 83.7 %.With the increase of CaF2 in refining slag the desulfurization rate rises initially and then falls down.The optimum composition of the refining slag is w(CaO)/w(SiO2) =3.0,w(CaF2)=7 %、w(MgO)=6 %、w(Al2O3)=24 %.更多还原