永久磁鐵中的釤鈷磁鐵則作為我們永續發展專案的關鍵應用，因此針對釤鈷磁鐵切削廢污泥的資源化處理變得至關重要。2015年，聯合國發佈了2023年永續發展目標（Sustainable Development Goals，SDGs），其中永續的消費和生產模式是當前需要應對的問題。
本研究對釤鈷磁鐵的切削廢污泥進行了三部分的處理。首先，在第一部分中，廢料經過研磨和乾燥處理，我們通過計算分析得出了最佳的研磨參數，然後使用50目的篩網進行篩分，進行特性分析，並使用王水消化法分析廢料中的金屬濃度。
第二部分涉及溶劑萃取，我們選用2M鹽酸作為浸漬劑，並以乙二醇（EG）作為溶劑進行浸漬。我們首先與濕法冶金進行比較，分別在不同的浸泡時間下比較了濕法冶金和溶劑冶金的浸出率，並將浸出溫度設置在40°C，固液比為20ml/g。萃取劑方面，我們使用Aliquat336 TG，Aliquat336 TG使用50vol%甲苯進行稀釋。我們的研究得出最佳浸泡時間為60分鐘，鈷的浸出率達到99%，鐵達到99%，銅為96%。再使用鹽酸進行鈷離子反萃取後，我們選擇氨水來實現對銅和鐵離子的選擇性沉澱。透過添加0.5M鹽酸，我們成功地獲得了氯離子的98%回收率，之後再加入10ml氨水，成功分離了鐵和銅離子，鐵離子的沉澱率達到98%，形成Fe（OH）2，銅離子形成Cu（NH3）42+，銅離子的濃度達到99%。釤離子的萃取階段使用D2EHPA作為萃取劑，煤油作為稀釋劑，將釤離子成功地從溶液中萃取到D2EHPA中，然後使用草酸進行沉澱。我們的反萃取實驗參數包括溫度25°C，油水比(O/A ratio)1.25，混合時間30分鐘，進料/萃取劑比為1/2，結果顯示釤反萃取率達到98%，最終形成了Sm2(C2O4)3，其沉澱率也達到了98%。

The increasing demand for semiconductors, energy, medical, and aerospace technologies has highlighted the importance of samarium-cobalt (SmCo) magnets, a key component in sustainable development projects. This research focuses on the resource recovery from the cutting waste sludge of SmCo magnets, in line with the United Nations' Sustainable Development Goals (SDGs) of 2023, which empHasize sustainable consumption and production patterns.The study comprises three parts. Initially, the waste undergoes grinding and drying, with optimal grinding parameters determined through computational analysis. The ground material is then sieved using a 50-mesh screen for characteristic analysis and aqua regia digestion to analyze metal concentrations in the waste.The second part involves solvent extraction using 2M hydrochloric acid as a leaching agent and ethylene glycol (EG) as the solvent. This process was compared with wet metallurgy under various soaking times, with an optimal soaking duration of 60 minutes identified, achieving cobalt leaching rates of 99%, iron 99%, and copper 96% at 40°C with a solid-liquid ratio of 20ml/g. The extractant used was Aliquat336 TG, diluted with 50vol% toluene. Post-cobalt ion re-extraction with hydrochloric acid, selective precipitation of copper and iron ions was achieved using ammonia water. Adding 0.5M hydrochloric acid resulted in a 98% recovery rate of chloride ions. The subsequent addition of 10ml of ammonia water successfully separated iron and copper ions, with iron precipitating as Fe(OH)3 (98% rate) and copper forming Cu(NH3)42+ (99% concentration).For samarium ion extraction, D2EHPA as the extractant and kerosene as a diluent were used. Samarium ions were effectively extracted into the D2EHPA pHase and then precipitated using oxalic acid. The re-extraction parameters included a temperature of 25°C, an O/A ratio of 1.25, a mixing time of 30 minutes, and a feed/extractant ratio of 1/2. The study concluded with a samarium re-extraction rate of 98%, forming Sm2(C2O4)3 with a precipitation rate of 98%.

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