两段碳还原MoO_3反应产物的成分研究  

Research on Composition of the Reaction Products from Two-stage Carbon Reduction of MoO_3

作　　者：林宇霖[1] 陈同云[1] 黄宪法[2] 桂林[2] 赵静霞[1] 

机构地区：[1]安徽工业大学化学与化工学院,安徽马鞍山243002 [2]安徽省冶金科学研究所有限公司,安徽合肥231131

出　　处：《稀有金属与硬质合金》2013年第1期28-31,共4页Rare Metals and Cemented Carbides

摘　　要：采用石墨粉为碳源分两段还原MoO3粉末,通过对各阶段产物的XRD、FESEM和EDS分析表征,初步探讨还原过程中可能的反应历程。结果表明,Mo4O11可能是碳还原MoO3为MoO2过程中的过渡相;经650℃和1 250℃各还原1h后,MoO3粉末可被碳较充分地还原成结晶度较高、粒径均匀的金属钼粉,且产物中存在少量的副产物α-Mo2C。MoO3 powders were reduced by two stages with graphite powders as the carbon source. The re- duction products at different stages were characterized by XRD,FESFM and EDS,and then a preliminary discussion was made on the possible reaction mechanism during carbon reduction. The results show that Mo4O11 may be the transitional phase during the carbon reduction of MoO3 to MoO2. MoO3 can be com- pletely reduced with carbon by reaction for 1 h both at 650 ℃ and 1 250 ℃ to obtain metallic molybdenum of high crystallinity and uniform particle size,containing a small amount of a-Mo2 C byproduct.

关 键 词：MOO3 两段碳还原 反应产物 成分 

分 类 号：TF803.12[冶金工程—有色金属冶金]