摘要
研究了Pb-Pd合金真空蒸馏的基本规律.结果表明,含Pd10%(ω)的Pb-Pd合金在1250K及35Pa条件下进行一次蒸馏,蒸馏时间延长至4h后Pb脱除率接近定值(92.5%),一次蒸余物中的Pd含量保持在60%左右.将一次蒸余物在1523K下进行二次蒸馏,所得二次蒸余物中Pd含量仍保持在60%左右.真空蒸馏工艺处理Pb-Pd合金,将大量Pb脱除并直接得到纯金属Pb,同时富集了Pd,减少了后续提Pd工艺的处理量.
The basic rule of vacuum distillation of Pb-Pd alloy was investigated. The primary distillation results show that the removal rate of Pb was close to 92.5% and the Pd content in the primary distillation residue remained at about 60% when the Pb-Pd alloy containing 10%(ω) Pd was distillated for more than 4 h at 1250 K and 35 Pa. After the secondary distillation at 1523 K, the Pd content in the secondary residue was still maintained at about 60%. In the vacuum distillation process of Pb-Pd alloy, most of Pb could be separated and collected as metallic Pb, while Pd was enriched in the residue. As a result, the material amount of further treatment for extraction of Pd was reduced remarkably by this method.
出处
《过程工程学报》
CAS
CSCD
北大核心
2010年第1期80-83,共4页
The Chinese Journal of Process Engineering
基金
国家高技术研究发展计划(863)基金资助项目(编号:2006AA06Z375)
广东省社会发展计划基金资助项目(编号:2006A36703002)
关键词
Pb—Pd合金
真空蒸馏
分离
富集
Pb-Pd alloy
vacuum distillation
separation
enrichment