钼粉粒度及K含量的影响因素研究  

Factors Influencing Mo Powder Particle Size and K Content

作　　者：刘宏亮[1] 刘仁智[1] 王培华[1] 

机构地区：[1]金堆城钼业股份有限公司,陕西西安710075

出　　处：《中国钨业》2015年第3期32-37,共6页China Tungsten Industry

摘　　要：钼粉的费氏粒度和K含量是钼粉的两个重要物化指标。文章研究了在不同工艺条件下,不同粒度、不同K含量的Mo O3原料对还原产品Mo O2、Mo粉粒度及K含量之间的影响,采用平均粒度测定仪测定了Mo O2、Mo粉粒度,采用偏振塞曼原子吸收分光光度计测定了K含量。结果表明,粒度较大的Mo O3对应Mo粉的粒度也相对较大;纯Mo O3原料中K含量越高,经相同工艺还原所得Mo粉的粒度越大;随着一段还原温度的升高,对应Mo O2、Mo粉中K含量都呈现出先降低、后增长的规律;提高一段还原氢气露点,中间Mo O2、Mo粉粒度、K含量都呈增长趋势;增加一段还原的料层厚度,对应Mo O2、Mo粉中K含量呈降低趋势。Freund particle size and K contents are two important physical and chemical properties of molybdenum powder. This paper studies the effect of MoO 3 materials of different K contents and particle sizes on the particle sizes and K contents of the post-reduction MoO2 and Mo powder. The particle sizes of MoO2 and Mo powders and K contents were measured respectively by average particle size analyzer and Hitachi polarized Zeeman atomic absorption spectrophotometer. The results showed that particle sizes of Mo powder are proportional to those of the corresponding MoO3. The higher K content in Pure MoO3 feedstock, the greater the particle size of Mo powder by the same reduction process. As the reduction temperature increases, the K contents of the corresponding MoO 2, Mo powders tend to grow after initial decreasing. MoO 2, Mo powder particle size and K contents increase with the increased reduction hydrogen dew points. The corresponding K contents in MoO 2, Mo powder decrease with the increased thickness of reduction materials.

关 键 词：MOO3 MoO2 MO 粒度 K含量 还原工艺 

分 类 号：TF122[冶金工程—粉末冶金]