環保專案成果報告查詢系統

專案計畫編號	EPA-109-XB06
經費年度	109
計畫經費	1,100 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	2020/01/01
專案結束日期	2020/11/30
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	科技計畫
中文關鍵字	廢電子電機設備、回收稀土、氧化釹
英文關鍵字	waste electrical and electronic equipment, rare earth recovery, nebidium oxide
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子電器資訊物品之永磁體成分，並開發稀土永磁體之稀土回收技術。永磁體以４００℃加熱３０分鐘消磁處理後粉碎至１００目，成分檢測結果顯示所取樣之硬碟致動器及冷氣壓縮機馬達轉子，皆為釹鐵硼稀土永磁體。以硫酸複鹽法回收稀土氧化物之稀土回收率９０．５％，純度９０．４％。為了回收更高純度稀土氧化物，另以鐵氧化與鹽酸浸漬法回收，經最佳的８００℃焙燒氧化鐵後，以６０℃之鹽酸固液比１：４ ~１：２０酸溶後，以氫氧化鈉溶液調整pH至３．５，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去除雜金屬。以無水草酸添加量固液比１：１００，及控制４０℃溶液溫度，沉澱為稀土草酸鹽。將上述稀土草酸鹽，以８５０°C鍛燒分解出ＣＯ２，得稀土氧化物之稀土回收率８５．５％，純度９５．７％。本計畫已完成廢電子電器產品所含永磁稀土之拆解、消磁與粉碎前處理、氧化焙燒使形成不溶性氧化鐵、鹽酸浸漬酸溶後以草酸沉澱及鍛燒，成功回收為稀土氧化物。
中文關鍵字	廢電子電機設備、回收稀土、氧化釹

中文摘要

本計畫取樣分析我國廢電子電器資訊物品之永磁體成分，並開發稀土永磁體之稀土回收技術。永磁體以４００℃加熱３０分鐘消磁處理後粉碎至１００目，成分檢測結果顯示所取樣之硬碟致動器及冷氣壓縮機馬達轉子，皆為釹鐵硼稀土永磁體。以硫酸複鹽法回收稀土氧化物之稀土回收率９０．５％，純度９０．４％。為了回收更高純度稀土氧化物，另以鐵氧化與鹽酸浸漬法回收，經最佳的８００℃焙燒氧化鐵後，以６０℃之鹽酸固液比１：４ ~１：２０酸溶後，以氫氧化鈉溶液調整pH至３．５，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去除雜金屬。以無水草酸添加量固液比１：１００，及控制４０℃溶液溫度，沉澱為稀土草酸鹽。將上述稀土草酸鹽，以８５０°C鍛燒分解出ＣＯ２，得稀土氧化物之稀土回收率８５．５％，純度９５．７％。本計畫已完成廢電子電器產品所含永磁稀土之拆解、消磁與粉碎前處理、氧化焙燒使形成不溶性氧化鐵、鹽酸浸漬酸溶後以草酸沉澱及鍛燒，成功回收為稀土氧化物。

中文關鍵字

廢電子電機設備、回收稀土、氧化釹

類型	檔名	檔案大小	說明	最新版公開日期
期末報告	廢電子電器資訊物品之稀土回收再生技術(期末報告公開版 )_朝陽科大王文裕.pdf	0MB	廢電子電器資訊物品之稀土回收再生技術(期末報告公開版 )_朝陽科大王文裕	2021/1/1 上午 12:00:00

摘要	This project focuses on the study and analysis of the permanent magnet from waste electronic and electrical equipment, and the development of rare-earth recovery technology for permanent magnet. First, the permanent magnet was demagnetized by heating at 400°C for 30 minutes, and crushed into 100 mesh powder. The analysis results of powder composition show that actuator from hard disk and rotor from air conditioner compressor motor are made of neodymium-iron-boron rare-earth permanent magnets. The recovery rate and purity of rare-earth oxide by using rare-earth-sodium sulfate complex salt method is 90.5% and 90.4%, respectively. In order to create better purity, hydrochloric acid leaching with previous iron oxidation method was used in this study. After roasting at 800℃, which is the best temperature according to our study, rare-earth permanent magnet was dissolved in a hydrochloric acid with solid to liquid ratio of 1:4 ~ 1:20 at 60℃. Next, pH value of the solution was adjusted to 3.5 by adding sodium hydroxide, and be heated at 50℃ for 30 minutes. After that, the iron hydroxide in acid solution precipitated, and impurities were also removed. With the addition of anhydrous oxalic acid with solid to liquid ratio of 1:100 controlling at 40°C, rare-earth oxalate was able to be precipitated. By calcining the rare-earth oxalate at 850°C to decompose CO2, it can be formed into rare-earth oxide. The recovery rate of rare-earth by this method is 85.5%, along with purity of 95.7%. This project has completed the dismantling, demagnetization and pre-treatment of permanent magnet from waste electronic and electrical equipment, and completed the procedures of roasting oxidation to form insoluble iron oxide, leaching in hydrochloric acid, precipitation and calcination of oxalic acid, and successfully recovered rare-earth Oxides.
英文關鍵字	waste electrical and electronic equipment, rare earth recovery, nebidium oxide

摘要

This project focuses on the study and analysis of the permanent magnet from waste electronic and electrical equipment, and the development of rare-earth recovery technology for permanent magnet. First, the permanent magnet was demagnetized by heating at 400°C for 30 minutes, and crushed into 100 mesh powder. The analysis results of powder composition show that actuator from hard disk and rotor from air conditioner compressor motor are made of neodymium-iron-boron rare-earth permanent magnets. The recovery rate and purity of rare-earth oxide by using rare-earth-sodium sulfate complex salt method is 90.5% and 90.4%, respectively. In order to create better purity, hydrochloric acid leaching with previous iron oxidation method was used in this study. After roasting at 800℃, which is the best temperature according to our study, rare-earth permanent magnet was dissolved in a hydrochloric acid with solid to liquid ratio of 1:4 ~ 1:20 at 60℃. Next, pH value of the solution was adjusted to 3.5 by adding sodium hydroxide, and be heated at 50℃ for 30 minutes. After that, the iron hydroxide in acid solution precipitated, and impurities were also removed. With the addition of anhydrous oxalic acid with solid to liquid ratio of 1:100 controlling at 40°C, rare-earth oxalate was able to be precipitated. By calcining the rare-earth oxalate at 850°C to decompose CO2, it can be formed into rare-earth oxide. The recovery rate of rare-earth by this method is 85.5%, along with purity of 95.7%. This project has completed the dismantling, demagnetization and pre-treatment of permanent magnet from waste electronic and electrical equipment, and completed the procedures of roasting oxidation to form insoluble iron oxide, leaching in hydrochloric acid, precipitation and calcination of oxalic acid, and successfully recovered rare-earth Oxides.

英文關鍵字

waste electrical and electronic equipment, rare earth recovery, nebidium oxide