由白钨酸氢还原制取超细钨粉的工艺研究  

On the Production Technology of Ultrafine Tungsten Powder Out of White Tungstic Acid by Hydrogen Reduction

作　　者：蔡万玲[1] 张玉英[2] 

机构地区：[1]新疆教育学院理学分院,新疆乌鲁木齐830043 [2]新疆农业大学,新疆乌鲁木齐830052

出　　处：《中国钨业》2010年第3期27-29,共3页China Tungsten Industry

摘　　要：以钨酸钠和盐酸为原料,乙酸作助剂,在超声条件下,得到钨酸胶体粒子。通过氢还原制取超细钨粉末,研究了还原温度、装舟量和氢气流量对制取钨粉粒度的影响。结果表明:还原温度是制取超细钨粉的关键因素,在适当的工艺条件下,可以使用钨酸钠制得超细钨粉。The nano-particles of the tungstie acid were synthesized out of Na2WO4·2H2O and HCl by ultrasonic method using CH3COOH as addictive. Tungsten nano-powder was prepared by hydrogen reduction from white tungstic acid. The effects of temperature, boat charge and hydrogen flow-rate on granularity of tungsten powder were studied. The results showed that reduction temperature was critical for the preparation of tungsten powder from white tungstic acid under appropriate technological conditions.

关 键 词：钨酸 氢还原 超细钨粉 

分 类 号：TF123.23[冶金工程—粉末冶金]