摘要
在实验室条件下 ,利用 Fe2 O3- Ca O- Ca F2 渣系研究了在高炉铁水预处理过程中铁水氧势对脱硅、脱磷效果的影响 ,根据铁水的氧势分析了伴随铁水预处理脱硅过程发生的脱磷反应 ,研究了铁水初始硅含量对脱磷效果的作用。结果表明 ,在 16 2 3K温度和初始硅含量为 0 .30 %的条件下 ,将铁水氧势控制在 (1.6 4~ 3.2 6 )× 10 - 4 %范围 ,可获得终点硅含量为 0 .144 %~ 0 .0 90 %的脱硅效果 ;对初始硅含量小于 0 .15 %的铁水 ,在 15 73K温度下 ,将铁水氧势控制在 1.7× 10 - 4 %以上 ,可获得大于 85 %的脱磷率 ;而在 16 2 3K温度下 ,铁水氧势高于 5 .5× 10 - 4 %才能获得约 80 %的脱磷率 ,脱磷终点铁水磷含量较高。比较脱硅和脱磷过程 ,确认铁水脱磷预处理的最佳初始硅含量为 0 .10 %~ 0 .15 %。
The effect of oxygen potential on De Si and De P, and initial [Si] content on De P during hot metal pretreatment were studied by Fe 2O 3 CaO CaF 2 slag. The results showed that the final [Si] content of 0.144 %~0.090 % can be reached if the oxygen potential is controlled in the range 1.64×10 -4 % to 3.26×10 -4 %; when initial [Si] content in hot metal is lower than 0.15 %, the De P ratio of 85 % and 80 % were obtained by controlling oxygen potential higher than 1.7×10 -4 % at 1 573 K and 5.5×10 -4 % at 1 623 K respectively, but the final [P] content was a little higher in later case. The optimum initial [Si] content is 0.10 % to 0.15 %.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2000年第6期11-15,共5页
Journal of Iron and Steel Research
基金
国家自然科学基金!资助项目 (5 97740 15 )
关键词
铁水预处理
脱硅
脱磷
铁水氧势
hot metal pretreatment
oxygen potential
de Si
de P