中文摘要：

随着廉价高铝铁矿石的不断使用,高炉炉渣内Al2O3含量也随之升高,这势必会影响高炉炉渣的各项冶金性能。为深入研究高铝高炉渣脱硫性能,明确MgO含量对高铝渣脱硫性能的影响,笔者通过改变高铝渣中MgO的含量,分别设定渣中MgO含量为5%、9%、13%MgO,研究不同MgO含量高炉高铝渣的脱硫性能及其脱硫动力学。结果表明：MgO含量不仅对高铝渣的黏度、脱硫能力有不同的影响,还使炉渣的脱硫速率发生了很大的改变。MgO含量越高对应的黏度越低,脱硫能力越大;但脱硫速率却表现出了不同规律,9%MgO的脱硫速率表现为最大;经过综合比较,当碱度固定为1.1、Al2O3含量固定为17%时,MgO含量为9%的炉渣同时具有较好的粘度和脱硫性能。

英文摘要：

Al2O3 content will inevitably rise in blast furnace slag as iron ore with high alumina content is continually used, and then metallurgical properties of the blast furnace slag will be certainly impacted. In order to research the effect of MgO content on the desulfurization ability and the desulfurization dynamics of the blast furnace slag with high alumina content, we studied the slag with MgO content of 5 %, 9 % and 13%, respectively. The results show the MgO content has different effect on the viscosity and the desulfurizaton ability of the slag with high alumina content, and can greatly change the desulfurization rate. The higher the MgO content is, the lower the viscosity and the greater the desulfurization speed is. The desulfuration rate reaches the maximum when the MgO content in the slag is 9 %. Both the viscosity and the desulfurization ability are preferable when the MgO content is 9 % in the slag, the Al2O3 content is 17% and the basicity is equal to 1.1.