铝酸钙脱硫渣系的实验研究

Experimental Research on Calcium Aluminate Desulphurizer Slags

在实验室的条件下,对用CaO、Al2O3、CaF2为原料配制的钢水脱硫剂进行了实验研究。研究发现,增加预熔脱硫剂量,可提高脱硫速度,增大脱硫率。提高钢水温度可以增大脱硫效率,在1620℃下,10min就可将钢液中的硫降低到0.026wt%的较低水平。添加CaO的铝酸钙预熔渣的脱硫效果明显优于纯12CaO.7Al2O3渣系,加氧化钙含量为10wt%时,整体脱硫效果最好。此预熔合成渣原料将可能成为一种高效、快速、环保的脱硫剂。

The desulphurizer of CaO-Al2O3-CaF2 was researched in laboratory.The results show that increasing the contents of pre-melted desulphurizer can increase the velocity and ratio of desulfurization.In the meanwhile,elevating temperature of liquid steel can increase desulfurization degree;the S-content can decrease to a relative low level（0.026wt%） in 10 minutes at 1620℃.The desulphurization effect using calcium aluminate desulphurizer slags with CaO is superior to that using pure 12CaO·7Al2O3 slag,while the additive amount of CaO is 10wt%,the desulphurization effect is best.Therefore the calcium aluminate desulphurizer slags with CaO can be used as a high efficient,high speed and an environmental friendly desulphurizer.