本研究針對廢棄之插件式鉭電解電容進行資源再生之研究，將鉭電容中之有價金屬鉭、錳、鐵、鎳、銀資源進行再生，研究流程主要可以分為特性分析、前處理、選擇性浸漬、氯化焙燒與金屬產物析出五個部分，並使得最終之產物可以回到產業端進行運用。
第一部分為鉭電容之特性分析，藉由儀器分析材料之物理組成與元素組成，並探討鉭電容內部之晶相組成，作為訂定後續實驗步驟之依據。
第二部分為前處理，利用熱裂解與磁力分選將存在於環氧樹脂外層之二氧化矽去除並將鐵鎳質引線回收，以避免影響目標金屬之純化，並將電極體破碎後增加顆粒之表面積以提升後續選擇性浸漬之效率。
第三部分為為選擇性浸漬，利用銀、鉭資源不溶於硫酸之特性，將錳先以硫酸浸出，將銀、鉭資源留在固相。接下來再利用硝酸浸漬分離銀、鉭資源，並探討浸漬藥劑濃度、液固比、浸漬時間與反應溫度之最佳參數，經過兩次選擇性浸漬後分別計算錳、銀、鉭之浸漬效率分別為99.3%、99.62%、0.08%。
第四部分為氯化焙燒研究，針對含鉭浸漬渣進行純化，經TG/DTA分析富鉭浸漬渣與氯化鈉混合後之熱性質，並探討焙燒之最佳溫度與時間。藉由管型爐加熱樣品，而生成之五氯化鉭的沸點為247.4 °C，將在反應過程中揮發冷凝後加入乙醇，使其變為醇鹽沉澱，達成鉭資源之富集與純化。
第五部分為金屬產物析出研究，利用化學沉澱法與高溫鍛燒法將錳離子與含鉭醇鹽轉為氧化物之形式回收，銀離子溶液則是藉由鋅粉進行置換反應，最終藉由儀器分析得到四氧化三錳、銀金屬與五氧化二鉭，其純度分別可達99.42%、98.32%與99.67%。

Electronic products are ever growing in popularity, and tantalum capacitors are heavily used in small electronic products. Spent epoxy-coated solid electrolyte tantalum capacitors, containing about 22 wt.% of tantalum, 8 wt.% of manganese and nickel, and 1 wt.% of silver, were treated through selective leaching and chlorination to separate the valuable metals. Epoxy resin was removed through pre-treatment and wires were recycled through magnetic separation. In the selective part, The effects of acid type, acid concentration, liquid-solid ratio, and reaction time were investigated to dissolve the manganese and silver. Next, residues of selective leaching after washing and drying were heated with ferrous chloride to convert to pure TaCl5 and collected in ethanol. Finally, calcining Mn(OH)2 and alkoxide of Ta to obtain oxide products, and replacing silver with zinc powder.

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