摘要
在850~900℃,通过钠和氟钽酸钾发生氧化-还原反应制备电容器级高比容金属钽粉.对经水-酸洗工艺湿法提纯后钽粉的物理性能进行对比,并分析不同比容、粒度的钽粉,经过水洗、酸洗、烘干和筛分后,杂质含量、松装密度、平均粒径、比表面积、流动性和粒度的分布规律.结果表明,经过水-酸洗后的钽粉,粒度分布发生变化,杂质含量降低,电性能提高.
Sodium and potassium fluorotantalate are used to prepare capacitor-grade high-capacity metal tantalum powder by oxidation-reduction method at 850-900℃.This paper compares the chemical and physical properties of tantalum powder in the wet purification process of water-acid washing process,and analyzes the chemical impurity content,loose packing density,average particle size,specific surface area,mobility and particle size distribution pattern of tantalum powder with different specific volume and particle size after water washing,acid washing,drying and sieving powder.The results show that the tantalum powder after water-acid washing,has changed in particle size distribution,reduced in chemical impurity content and improved in electrical properties.
作者
李福成
Li Fucheng(The Stateof Tantalum and Niobiumspecial Metal Material Sengineering Technology Research Center,Shizuishan 753000,China;State Key Laboratory of Special Rare Metal Materials,Northwest Rare Metal Materials Research Institute,Shizuishan 753000,China;CNMC Ningxia Orient Group Co.Ltd.,Ningxia Orient Tantalum Industry Co.Ltd.,Shizuishan 753000,China)
出处
《宁夏大学学报（自然科学版）》
CAS
2023年第3期249-252,257,共5页
Journal of Ningxia University(Natural Science Edition)
基金
稀有金属特种材料国家重点实验室研发平台建设基金资助项目(2019BDC050001)。
关键词
高比容钽粉
水-酸洗工艺
湿法提纯
化学性能
物理性能
粒度分布
high specific capacity tantalum powder
water-acid washing process
wet purification
chemical property
physical property
particle size distribution
