【作者】 任晓冬； 张廷安； 刘燕； 勾力争； 李冲； 豆志河； 吕国志； 赫冀成；

【Author】 Ren Xiaodong,ZhangTing-an,Liu Yan,Gou Lizheng,Li Chong,Dou Zhihe,Lv Guozhi, He Jicheng (Laboratory of Ecological Untilization of Multi-metal Intergrown Ores of Education Ministry,Shenyang,110004 China)

【机构】 东北大学材料与冶金学院多金属共生矿生态化利用教育部重点实验室；

【摘要】 本文针对钢铁行业中所采用镁基脱硫剂的不足,提出了新型脱硫剂,并对这种新型脱硫剂进行了热力学计算和高温铁水脱硫实验研究。研究表明:白云石与铝的反应起始温度为1314℃,白云石与硅反应的起始温度为1565℃,氧化镁与铝的反应的起始温度为1475℃,氧化镁与碳反应的起始温度为1846℃,碳热还原反应条件苛刻,在铁水温度下硅还原白云石反应发生镁的分压约为0.2-0.4个大气压,铝热反应都比较容易发生;通过铁水脱硫实验,MgO加C脱硫剂脱硫效果最差,脱硫率仅为42.31%,煅白与Al反应结果最好,脱硫率达到94.31%,煅白和Si-Fe与氧化镁和Al的反应适中,脱硫率在85%以上,实验结果与热力学计算吻合。更多还原

【Abstract】 For the lack of magnesium-based desulfurizer in iron and steel industry,this paper investigated a new desulfurizer.The study on the new method included the calculation of thermodynamics and experimental study of desulfurization of hot iron.From study,the reaction temperature of light-burned dolomite and Al is 1314℃,the reaction temperature of light-burned dolomite and Si is 1565℃,the reaction temperature of MgO and Al is 1475℃, the reaction temperature of MgO and C is 1846℃,the reaction temperature of MgO and C is too high,at the hot metal temperature,the pressure of Mg vapor is 0.2-0.4atm,and the reactions of Al are both easy happenned;From hot metal experiments,the desulfurizer of MgO and C is the worst,the desulfurization efficiency is 42.31%,the results of light-burned dolomite and Al is the best,.the desulfurization efficiency is 94.31%,the results of the other desulfurizer are good,the desulfurization efficiencies are above 85%.更多还原