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摘要


本研究主要針對廢IC(積體電路)板經電漿熔融後熔渣中之金、銀、銅進行回收研究,本研究方法包括破碎研磨、篩分、磁選、浸漬溶蝕及溶蝕效率分析等。本研究成果顯示,廢IC板電漿熔渣之比重爲3.47、水份爲0.23%,而灰份爲101.81%。熔渣經過粉碎、磁選後可得6.62%之含鐵物,而不感磁物中含有金0.0010%、銀0.0392%及銅33.94%。另不感磁物經篩分得知100目(0.149mm)以上之熔渣含銅量較高,可直接將其售予煉銅廠作爲冶銅之原料,而100目以下,因其粒徑較小且尚含有金、銀、銅有價物,故本研究以鹽酸、硫酸、氨水、硫脲等浸漬劑來進行金、銀、銅之浸漬溶蝕研究。本研究結果顯示以硫脲浸漬效果最好,其最佳浸漬條件爲:硫脲2.5g,硫酸濃度7.2N,硫酸鐵3.3g,固液比0.03(1.5g/50mL),在室溫下浸漬2小時,可得金、銀、銅100%之浸漬回收率。

關鍵字

IC板 回收 浸漬

並列摘要


In this study, various methods for grinding, screening, magnetic separation and leaching are adopted to recover the valuable gold, silver and copper metallic components from the slag of plasma-treated scrap integrated circuit (IC) boards. The results of the compositional analysis reveal that the specific gravity, iron content, moisture and ash content of this slag are 3.47%, 6.62%, 0.23% and 101.08%, respectively. After magnetic separation, the fraction of non-ferrous metal larger than 100 mesh (0.149mm), containing mainly copper, can be sold directly to a copper smelter; moreover, the gold, silver and copper components can be recovered by leaching. The leaching result indicates that a 100% recovery of gold, silver and copper can be achieved by using a thiourea leaching solution.

並列關鍵字

integrated circuit boards recycling gold silver copper leaching

被引用紀錄


楊竣宇(2016)。社會與經濟因素對於回收行為影響之分析— 以提升臺灣廢筆記型電腦回收率為例〔碩士論文,淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2016.00130
張雅翔(2012)。應用兩階層規劃模型於差別補貼費率訂定之研究-以台灣廢印表機資源回收系統為例〔碩士論文,淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2012.00855

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