AOD炉冶炼不锈钢时脱硫的动力学分析

Kinetic Analysis of Desulfurization during Stainless Steel Smelting in AOD

在AOD炉内的冶炼过程中,针对相同的供气强度0.63 m 3/(t·min),不同的反应温度1 600℃、1 650℃、1 700℃,和相同的反应温度1 650℃,不同的供气强度0.33 m3/(t·min)、0.63 m3/(t·min)、0.88 m3/(t·min)两种条件进行试验,取样分析钢中硫的质量分数。结果显示:脱硫过程的控制步骤为扩散过程[S]从钢液通过边界层到钢-渣界面,其活化能为10.59 k J/mol。

During stainless steel smelting in AOD, sulfur content are analyzed at different temperature（1 600 ℃,1650 ℃,1 700 ℃）and at the same stirring intensity（0.63 m3/（t·min））.Furthermore, similar experiments are repeated at same temperature（1 650 ℃）and different stirring intensity（0.33 m3/（t·min）, 0.63 m3/（t·min）, 0.88 m3/（t·min））.The results show that the controlling step is the diffusion of sulfur from molten steel to the steel-slag interface, and the activation energy is 10.59 k J/mol.