環保專案成果報告查詢系統

專案計畫編號	EPA-110-XB04
經費年度	110
計畫經費	1,600 千元
預算科目	補助及獎勵回收清除處理暨再生利用
專案開始日期	2021/01/01
專案結束日期	2021/11/30
專案主持人	王文裕
主辦單位	回收基管會
承辦人	梁鴻君
執行單位	朝陽科技大學
專案分類	廢棄物管理
中文關鍵字	廢電器、回收稀土、輕稀土、重稀土
英文關鍵字	waste electrical equipment, rare earth recovery, light rare earth, heavy rare earth
協同主持人
共同主持人
計畫聯絡人	王文裕
計畫聯絡電話	04-23323000#4675
計畫聯絡信箱	wywang@cyut.edu.tw

中文摘要	本計畫取樣分析我國廢電器物品（冷氣機壓縮機）之永磁體成分，並研發稀土永磁體所含輕稀土與重稀土之溶劑萃取分離純化技術。已完成廢電器產品所含稀土永磁磁鐵之拆解、消磁與粉碎前處理、氧化焙燒使形成不溶性氧化鐵、鹽酸浸漬酸溶後以溶劑萃取分離重稀土與輕稀土。重稀土反萃液及輕稀土萃餘液，分別以草酸沉澱及鍛燒，成功回收為重稀土氧化物及輕稀土氧化物。永磁體以４００°C 加熱３０分鐘消磁處理後粉碎至１００目，成分檢測結果顯示所選取冷氣壓縮機馬達轉子為釹鐵硼稀土永磁磁鐵。以鐵氧化與鹽酸浸漬技術法回收，經最佳的８００℃焙燒氧化鐵後，以９０℃之鹽酸固液比１：４～１：２０酸溶，經氫氧化鈉溶液調整ｐＨ３．５，再持溫５０℃加熱３０分鐘，使殘留酸液中的氫氧化鐵膠凝沉澱並過濾去除雜金屬。過濾液調整ｐＨ值至４以重稀土３倍莫耳劑量的Ｐ５０７即１：１的油水相體積比溶劑萃取分離重稀土與輕稀土。重稀土反萃液及輕稀土萃餘液，分別以無水草酸添加量固液比１：１００，及控制４０℃沉澱液溫度，沉澱以８５０°C 鍛燒得產品重稀土氧化物及輕稀土氧化物。總稀土回收率９１．５%，重稀土純度９６．９%，輕稀土純度９４．８%。
中文關鍵字	廢電器、回收稀土、輕稀土、重稀土

中文摘要

本計畫取樣分析我國廢電器物品（冷氣機壓縮機）之永磁體成分，並研發稀土永磁體所含輕稀土與重稀土之溶劑萃取分離純化技術。已完成廢電器產品所含稀土永磁磁鐵之拆解、消磁與粉碎前處理、氧化焙燒使形成不溶性氧化鐵、鹽酸浸漬酸溶後以溶劑萃取分離重稀土與輕稀土。重稀土反萃液及輕稀土萃餘液，分別以草酸沉澱及鍛燒，成功回收為重稀土氧化物及輕稀土氧化物。永磁體以４００°C 加熱３０分鐘消磁處理後粉碎至１００目，成分檢測結果顯示所選取冷氣壓縮機馬達轉子為釹鐵硼稀土永磁磁鐵。以鐵氧化與鹽酸浸漬技術法回收，經最佳的８００℃焙燒氧化鐵後，以９０℃之鹽酸固液比１：４～１：２０酸溶，經氫氧化鈉溶液調整ｐＨ３．５，再持溫５０℃加熱３０分鐘，使殘留酸液中的氫氧化鐵膠凝沉澱並過濾去除雜金屬。過濾液調整ｐＨ值至４以重稀土３倍莫耳劑量的Ｐ５０７即１：１的油水相體積比溶劑萃取分離重稀土與輕稀土。重稀土反萃液及輕稀土萃餘液，分別以無水草酸添加量固液比１：１００，及控制４０℃沉澱液溫度，沉澱以８５０°C 鍛燒得產品重稀土氧化物及輕稀土氧化物。總稀土回收率９１．５%，重稀土純度９６．９%，輕稀土純度９４．８%。

中文關鍵字

廢電器、回收稀土、輕稀土、重稀土

類型	檔名	檔案大小	說明	最新版公開日期
期末報告	廢電器物品回收稀土之分離與純化技術(公開版).pdf	0MB		2022/1/1 上午 12:00:00

摘要	This project focus on the study and analysis of the permanent magnet components from waste electrical appliances (air-conditioner compressors), and the developments solvent extraction and purification technology for light rare earths and heavy rare earths contained in rare earth permanent magnets. The dismantling, demagnetization and smashing pre-treatment of the rare earth permanent magnets contained in waste electrical appliances have been completed, and the oxidation roasting to form insoluble iron oxide. After immersing in hydrochloric acid and acid-dissolving, the heavy rare earths and light rare earths are separated by solvent extraction. The heavy rare earth stripping solution and the light rare earth raffinate were precipitated and calcined with oxalic acid, respectively, and successfully recovered as heavy rare earth oxides and light rare earth oxides. The permanent magnet is heated at 400°C for 30 minutes and then demagnetized to 100 mesh. The composition test results show that the selected air- conditioning compressor motor rotor is a neodymium ironboron rare earth permanent magnet. It is recovered by iron oxidation and hydrochloric acid impregnation technology. After the iron oxide is roasted at 800℃, it is dissolved in acid with a hydrochloric acid solid-liquid ratio of 1:4 ~ 1:20 at 90℃. The pH is adjusted to 3.5 by sodium hydroxide solution. Keep the temperature at 50°C and heat for 30 minutes to make the ferric hydroxide in the residual acid solution gel and precipitate and filter to remove the miscellaneous metals. The pH value of the filtrate is adjusted to 4, and the heavy rare earth is 3 times the molar dose of P507, which is a 1:1 oil-water phase volume ratio solvent extraction and separation of heavy rare earths and light rare earths. The heavy rare earth stripping solution and the light rare earth raffinate are respectively added with anhydrous oxalic acid in a solid-to-liquid ratio of 1:100, and the temperature of the precipitation liquid is controlled at 40°C, and the precipitate is calcined at 850°C to obtain the products of heavy rare earth oxides and light rare earth oxides. Things. The total rare earth recovery rate is 91.5%, the purity of heavy rare earths is 96.9%, and the purity of light rare earths is 94.8%.
英文關鍵字	waste electrical equipment, rare earth recovery, light rare earth, heavy rare earth

摘要

This project focus on the study and analysis of the permanent magnet components from waste electrical appliances (air-conditioner compressors), and the developments solvent extraction and purification technology for light rare earths and heavy rare earths contained in rare earth permanent magnets. The dismantling, demagnetization and smashing pre-treatment of the rare earth permanent magnets contained in waste electrical appliances have been completed, and the oxidation roasting to form insoluble iron oxide. After immersing in hydrochloric acid and acid-dissolving, the heavy rare earths and light rare earths are separated by solvent extraction. The heavy rare earth stripping solution and the light rare earth raffinate were precipitated and calcined with oxalic acid, respectively, and successfully recovered as heavy rare earth oxides and light rare earth oxides. The permanent magnet is heated at 400°C for 30 minutes and then demagnetized to 100 mesh. The composition test results show that the selected air- conditioning compressor motor rotor is a neodymium ironboron rare earth permanent magnet. It is recovered by iron oxidation and hydrochloric acid impregnation technology. After the iron oxide is roasted at 800℃, it is dissolved in acid with a hydrochloric acid solid-liquid ratio of 1:4 ~ 1:20 at 90℃. The pH is adjusted to 3.5 by sodium hydroxide solution. Keep the temperature at 50°C and heat for 30 minutes to make the ferric hydroxide in the residual acid solution gel and precipitate and filter to remove the miscellaneous metals. The pH value of the filtrate is adjusted to 4, and the heavy rare earth is 3 times the molar dose of P507, which is a 1:1 oil-water phase volume ratio solvent extraction and separation of heavy rare earths and light rare earths. The heavy rare earth stripping solution and the light rare earth raffinate are respectively added with anhydrous oxalic acid in a solid-to-liquid ratio of 1:100, and the temperature of the precipitation liquid is controlled at 40°C, and the precipitate is calcined at 850°C to obtain the products of heavy rare earth oxides and light rare earth oxides. Things. The total rare earth recovery rate is 91.5%, the purity of heavy rare earths is 96.9%, and the purity of light rare earths is 94.8%.

英文關鍵字

waste electrical equipment, rare earth recovery, light rare earth, heavy rare earth