摘要
为了降低钽粉中各化学杂质含量,提高纯度和品质,以钠还原得到的金属钽粉(一次原生粒子)在湿法提纯处理时对不同酸洗工艺参数进行详细对比试验,根据设计的酸洗工艺路线,在不同酸液质量分数,不同酸洗时间和不同酸液配比条件下,研究同一比容钽粉(FTa-40K)对O、Fe、Ni等化学杂质的去除效果。结果表明:酸液质量分数Φ=10±0.1%的HNO_(3)、Φ=(1.5±0.1%)的HF,酸洗溶液体积比V(HNO_(3))∶V(HF)=10.8∶1,酸洗时间150±2 min为最佳化学酸洗工艺参数,可为高比容钽粉的研发生产提供理论参考。
In order to reduce the content of various chemical impurities in tantalum powder,and to improve the powder purity and quality,after the metal tantalum powder after sodium reduction(primary particles)was processed through wet purification processing experiment with different pickling process parameters.According to the designed pickling process,the removal effects of the same volume of tantalum powder(FTa-40 K)in different acid concentration,under the condition of different time and different ratio of acid pickling of O、Fe、Ni chemical impurities were studied.The results showed that the mixed acid concentration ofΦ=(10±0.1)%(HNO_(3))、Φ=(1.5±0.1)%(HF),the ratio of acid that HNO_(3)∶HF=10.8∶1,pickling time as(150±2)min,were the optimum chemical pickling process parameters.It provided theory for research and production of high specific capacity tantalum powder.
作者
李福成
LI Fucheng(State Key Laboratory of Rare Metal Special Materials,Northuest Rare Metal Materials Research Institute,Shizuishan 753000,Ningxia,China;National Engineering Research Center Of antalum and Niobium Materials,Shizuishan 753000,Ningxia,China;Ningxia Orient Tantalum Industry Co.Ltd.,CNMC Ningxia Orient Group Co.Ltd.,Shizuishan 753000,Ningxia,China)
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2022年第4期176-180,共5页
Journal of Henan Polytechnic University（Natural Science）
基金
宁夏回族自治区自然科学基金项目(2019AAC03284)
国家863计划项目(2012BAE06B03)。
关键词
高比容钽粉
湿法提纯
酸洗工艺
杂质含量
high specific capacity tantalum powder
wet purification
pickling technology
impurty content
