EPA-104-X17

104

1,000 千元

2015/01/01

2015/11/30

陳康興

回收基管會

劉倩

國立中山大學環工所

廢棄物管理

微波系統、液晶顯示器、銦

Microwave system, LCD display, Indium

林淵淙

陳康興

07-5252000#4406

shin@mail.nsysu.edu.tw

由於科技的進步液晶顯示器的使用越來越普遍，台灣的光電產業快速發展，在我國經濟發展中扮演重要的角色，但是製作液晶顯示器的關鍵材料銦錫氧化物卻大量依賴進口，因此從廢棄的液晶顯示器中回收銦是一較經濟之方式。本研究比較傳統與利用微波系統快速萃取銦，傳統萃取在反應溫度100℃、反應時間60 min、鹽酸濃度5N及液固比4時有接近100%的萃取效率。而微波萃取能以更短的時間及成本回收銦，微波之最佳條件在反應溫度90℃、反應時間15min、鹽酸濃度4N及液固比4的條件下有接近100%的萃取效率。萃取方面利用DEHPA作為萃取劑，於pH1.5之下加入10ml濃度為0.25M之DEHPA萃取5分鐘，銦之萃取率可達99%。反萃取部分利用6N的鹽酸作為反萃取液進行反萃取10分鐘，所得銦的反萃率可達92%。電解回收時銦最佳操作條件為固定電壓5V、電流0.5A及1N鹽酸為電解液電解10小時，此時銦之回收率可達99.65%，且將電解回收所得之金屬進行分析，銦純度可達99.06%。

微波系統、液晶顯示器、銦

EPA-104-X17 期末報告.pdf

7MB

2016/2/1 上午 12:00:00

Due to advances in the use of liquid crystal display (LCD) technology is increasingly common, and the rapid development of optoelectronics industry plays an important role in Taiwan's economic development. But the production of liquid crystal display material indium tin oxide relies heavily on imports, so recycling indium from waste liquid crystal display is a more economical way. This study compared the use of traditional extraction with microwave extraction of indium. In traditional extraction reaction temperature 100 ℃, reaction time 60 min, 5N hydrochloric acid concentration and solid-liquid ratio 4, the extraction have close to 100 percent.Use as the extraction DEHPA, beneath pH1.5 was added 10ml of a concentration of 0.25M DEHPA extracted 5 minutes, the extraction rate of up to 99% of indium. Back-extracted part of the use of 6N hydrochloric acid as an anti extract is back-extracted 10 minutes, the resulting indium stripping rate of 92%When the electrolytic recovery of indium the best operating conditions for the fixed voltage 5V, current 0.5A and 1N hydrochloric acid as the electrolyte electrolysis 10 hours, then the recovery of indium up to 99.65%, and the electrolytic recovery of metals obtained from the analysis, purity indium up 99.06 percent.

Microwave system, LCD display, Indium