06.宝钢用钼精矿在AOD直接合金化过程中挥发性研究

王艳华¹，裴晓宇²，安胜利²，池和冰¹，王斌²，胡群²

(1. 宝钢不锈钢有限公司，上海，200431；2. 内蒙古科技大学，内蒙古包头，014010)

关键词：钼精矿；挥发性；MoO₃；CaMoO₄

中图分类号：TF702+ 文献标识码：A

摘要：采用FactSage计算、DSC-TG分析和SEM-EDS分析等方法对AOD直接合金化用钼精矿的挥发性进行了分析，同时对挥发后的钼精矿进行了EDS分析。结果表明，钼矿中钼的氧化物以MoO₃的形式挥发，而MoO₂的挥发速率较低，但在空气气氛中MoO₂很容易被氧化为MoO₃，同时，粒度对钼矿的挥发影响也较大，颗粒越大挥发越慢。熔渣在1318.39℃时液相量达到了98.33%，CaO与MoO₃可生成CaMoO₄，在有熔渣或CaO存在的条件下，熔渣或CaO能够有效的抑制钼氧化物的挥发。

Research on Volatile Compounds in The Process of Baosteel Direct Alloyingof Molybdenum Concentrates in AOD Furnace

WANG Yan-hua¹，PEI Xiao-yu²，AN Sheng-li²，CHI He-bing¹，WANG-Bin²，HU-Qun²

(1. Baostell Stainless Steel Co.，Ltd.，Shanghai 200431，China；2. Materials and Metallurgy School,Inner Mongolia University of Science and Technology,Baotou 014010,China)

Keywords: molybdenum concentrates; molybdenum trioxide; calcium molybdate

Abstract: The volatility of AOD directalloying with molybdenum concentrate was analyzed using FactSage calculation,DSC-TG, SEM-EDS and other methods，and an ESD analysis of molybdenum concentrate aftervolatilization was carried out.The results show that Molybdenum in molybdenummineral volatiles as molybdenum trioxide, and molybdenum dioxide was oxidizedto molybdenum trioxide in air atmosphere because the volatilization rate ofmolybdenum dioxide is lower. At the same time, the volatilization of molybdenummineral could be affected greatly under the influence of particle size. Thelarge the particle size is, the lower the volatilization rate is. The amount ofslag in liquid phase reached 98.33% at 1318.39℃;calcium oxide andmolybdenum trioxide can generation calcium molybdate.At the existence of slagor calcium oxide，the volatilization of molybdenum oxide could be inhibited by slag or calcium oxide effectively.