Recovery of Platinum-Ruthenium Binary Alloy Scrap: Separation and Refining

• Main Authors: Wei-TingChen, 陳威廷
• Other Authors: Long-Sun Chao
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/u7rf48

碩士 === 國立成功大學 === 工程科學系碩士在職專班 === 103 === The thesis is based on the recovery of Platinum-Ruthenium binary alloy scrap. The research is mainly divided into three directions: Part one is to promote the dissolution efficiency of Platinum-Ruthenium scrap. To enhance the efficiency, three kinds of oxidants are used to carry out the dissolution tests. From the test results, the efficiency of sodium chlorate is the best. Platinum dissolution efficiency is over 99.5% and Ruthenium dissolution efficiency is over 98.0%. Part two is to elevate the separation efficiency of Platinum and Ruthenium. The Taguchi Design method is employed to obtain the optimum distillation conditions. With the optimized conditions, the Platinum recovery efficiency from the distillation solution is over 99.0% and the Ruthenium recovery efficiency from the absorption solution is over 98.5%. The final part is to carry out the refining process from the Platinum and Ruthenium distillates. The results of Platinum and Ruthenium metal purity are over 99.95%. The recovery efficiency of Platinum is up to 99.7%. The recovery efficiency of Ruthenium is up to 98.0%.