TFT-LCD 廢玻璃/氟化鈣污泥熱處理資材化之研究

Abstract

本研究是利用熱處理，TFT-LCD廢玻璃與氟化化污泥進行玻璃陶瓷資材化研究，研究方式為先以試藥級藥品製備玻璃陶瓷，之後再以TFT-LCD玻璃與氟化鈣污泥取代試藥級配比，目的為了比較其差異性。本質驗共分為兩階段，第一階段先研究TFT-LCD玻璃與氟化鈣污泥之基本特性，包括：三成分分析、毒性特性溶出試驗、晶相分析；第二階段為研究試藥級玻璃陶瓷與包含TFT-LCD玻璃與氟化鈣污泥之玻璃陶瓷之性質分析，包括熱差分析、X射線繞射分析、觀察微觀結構，可評估取代之合適性。 實驗結果顯示，當TFT-LCD玻璃取代試藥級配比中的二氧化矽50％及氟化鈣污泥取代試藥級配比中的氧化鈣50％時，可得到最低熔流點1249℃，此時CaO+SiO2＝47.08 （％），鹽基度CaO/SiO2＝0.51；X射線繞射分析中指出，加入TFT-LCD玻璃與氟化鈣污泥玻璃陶瓷結晶強度較強，而結晶相為鈣長石（Anorthite），致使TFT-LCD 玻璃與氟化鈣污泥經熱處理後具資材化為玻璃陶瓷之潛力。

The study was to waste utilize the TFT-LCD waste glass and CaF2 sludge into glass-ceramics through thermal process. The research method was first to produce glass-ceramics with laboratory chemicals, then the laboratory chemicals were replaced by TFT-LCD waste glass and CaF2 sludge. In order to compare the difference between each other. The experiments were divided into two stages: (1) to study basic characterization of TFT-LCD waste glass and CaF2 sludge, including three constituents analysis, TCLP, and SEM. (2) to study the properties of laboratory chemical glass-ceramics with and without the replacement of TFT-LCD waste glass and CaF2 sludge, including DTA, XRD, and SEM. The experimental results showed that lowest pouring temperature was 1249℃when laboratory chemical SiO2 were replaced by 50 % TFT-LCD waste glass and CaO were replaced by 50 % CaF2 sludge. CaO+SiO2＝47.08 (％) and basicity ( CaO / SiO2 )＝ 0.51was corresponding to the lowest pouring temperature of 1249℃. XRD results showed that intensity of crystallization is better in glass-ceramics with TFT-LCD waste glass and CaF2 sludge, the crystallization phase is Anorthite, so that FT-LCD waste glass and CaF2 sludge prccess production has the potential to be used as glass-ceramics by thermal treatment.