摘要
为优化钼铁冶炼炉渣物理化学性能,进而改善钼铁和炉渣分离效果,提高钼回收率。利用化学元素分析、XRD、SEM-EDS、曲面相应法、FactSage计算和熔化温度测定等实验方法分析组分对熔化温度和黏度等影响机制,确定了最优渣型的成分范围。结果表明,随着CaO含量从6.55%(质量分数)增加到12.55%,相图中低熔点区域增大,影响炉渣黏度的因素的显著性顺序为CaO含量>SiO2含量>FeO含量>Al2O3含量,提高CaO、FeO和Al2O3,以及降低SiO2含量,可降低炉渣的熔化温度和黏度。含18.59%(质量分数)FeO、54.73%SiO2、13.74%Al2O3、12.93%CaO的炉渣的完全熔化温度最低为1 195.33℃,黏度达到最小值0.16 Pa·s。
In order to optimize the physicochemical properties of molybdenum iron smelting slags,improve the separation effect between molybdenum iron and slags and enhancing the molybdenum recovery rate,experimental methods such as chemical element analysis,XRD,SEM-EDS,response surface methodology,FactSage calculations,and melting temperature measurements were employed to analyze the influence mechanisms of components on melting temperature and viscosity,and the optimal composition range of slag types was determined.The results indicated that as the CaO content increases from 6.55%(mass fraction)to 12.55%,the low-melting-point region in the phase diagram expanded.The significant order of factors affecting slag viscosity is CaO content>SiO 2 content>FeO content>Al 2 O 3 content.Increasing CaO,FeO,and Al 2 O 3,while decreasing SiO 2 content could reduce the melting temperature and viscosity of slag.The slag with 18.59%(mass fraction)FeO,54.73%SiO 2,13.74%Al 2 O 3,and 12.93%CaO had the lowest complete melting temperature of 1195.33℃and a minimum viscosity of 0.16 Pa·s.
作者
赵常泰
李渭军
张卓
田斌
林兵
王国华
ZHAO Changtai;LI Weijun;ZHANG Zhuo;TIAN Bin;LIN Bing;WANG Guohua(Smelting Branch,Jinduicheng Molybdenum Co.,Ltd.,Weinan 714101,Shaanxi,China;School of Metallurgical Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,Shaanxi,China)
出处
《中国钼业》
2025年第1期38-45,共8页
China Molybdenum Industry
关键词
钼铁
炉渣
熔化温度
黏度
相图
曲面响应
ferromolybdenum
furnace slag
melting temperature
viscosity
phase diagram
surface response
