從廢玻璃基板中回收銦錫氧化物鍍層之方法

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

094106881

專利證號

I286953

專利獲證名稱

從廢玻璃基板中回收銦錫氧化物鍍層之方法

專利所屬機關 (申請機關)

亞太學校財團法人亞太創意技術學院

獲證日期

2007/09/21

技術說明

本發明係提供一種從廢玻璃基板中回收銦錫氧化物(Indium-Tin-Oxides，ITO)鍍層之資源再生 方法，其特徵在於：將由廢液晶顯示器中拆解所得之含銦錫氧化物玻璃基板置於超音波洗淨器 中，以6N濃度之鹽酸為浸漬液，在固液比為10g/50ml，浸漬溫度為70℃下，予以浸漬溶蝕2小 時後，可獲得銦、錫金屬之最佳浸漬溶出效果。再收集此含銦、錫之最佳浸漬液予以過濾，過 濾後之含銦、錫濾液以氫氧化鈉進行pH值調整至13，以使銦產生沉澱，經過濾後，可得有價之 含銦沉澱物，而錫則殘留於濾液中。再將含錫之濾液以鹽酸進行pH值調整至7，使錫產生沉 澱，再經過濾後，即可獲得有價之含錫沉澱物，而各項殘留之固體濾渣及濾液可視其性質另外 進行適當之最終處置或資源回收。 The main purpose of this invention is to devise a method to recover indium-tin- oxides (ITO) from scrap glass substrate. The procedure is：(1) Manually dismantle the glass substrate from the scrap liquid crystal display, and put it into a ultrasonic cleaning machine. (2) Then, use 6 N hydrochloric acid as the leaching solution under 70℃ with the solid-liquid ratio of 10 grams/50 milliliters. (3) After two hours leaching, the indium (In) and tin (Sn) will be totally leached into the leaching solution from glass substrate. (4) The pH of this leaching solution is adjusted to 13 by NaOH to precipitate indium from solution. After filtration, the valuable indium can be recovered as a precipitate. (5) The remaining leaching solution which containing tin is then adjusted by HCl to reach a pH of 7 to precipitate tin. After filtration, the valuable tin can be recovered as a precipitate. The remaining solid and leaching solution may be used for further resource recovery.

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037-605536

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