The Method Analysis of Recovery Techniques for Tungsten and Tantalum

• Main Authors: Wu Siang Ling, 吳湘菱
• Other Authors: 蘇昭瑾
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/76y33n

碩士 === 國立臺北科技大學 === 有機高分子研究所 === 103 === There are limited industrial applications of precious metals due to the rare amount and restricted recycling techniques. In this study, the potential recycling techniques for tungsten (W) and tantalum (Ta) were collected from literature review. The most commonly used techniques for getting W are liquid-liquid extraction, precipitation, adsorption, solvent extraction and high temperature mixing method. The most commonly used techniques for getting Ta are water extraction, liquid-liquid extraction, and washing method. Those techniques were compared and evaluated based on their feasibility, cost, and complication. A combination of acid and solvent extraction method was applied to recycle Ta from tantalum capacitor.