錫鉛銲材被廣泛地運用於電子元件與基板的電路連接上，錫鉛銲材主要合金成份比為63wt%Sn-37wt%Pb，廢錫鉛渣為電子產業錫鉛銲材之廢棄物，本研究係以一廢錫鉛渣處理廠個案公司為例，採用實廠操作之方法，一方面以溫度做為作業之操作條件，將熔煉爐從250℃到950℃間加熱，另一方面則以直流電壓做為作業之操作條件，將酸液電解純化模式以1V到4V之間操作電壓，以探討錫鉛銲材廢棄物之資源化再利用的最適操作條件及資源化帶給我們的經濟效益。 本研究結果顯示:在温度操作試驗下，廢錫鉛渣於650℃之溫度熔煉處理後，銅含量低於0.50%，符合原物料之成分規格，且操作成本較低。其經濟效益，從民國94年6月13日到民國95年12月13日期間之廢錫鉛渣熱熔資源化數據統計顯示:期間內錫鉛錠再利用量達183公噸，而經濟效益達新台幣3,318萬元，可見廢錫鉛渣之資源化具經濟效益。另一方面，因應 RoHS 之規格，必須將錫鉛合金之鉛去除，在電壓操作試驗下，以酸液電解純化之 3V 直流電壓操作模式，品質符合 RoHS 之規格且具資源化經濟效益。 本研究期能提供大眾對資源化貢獻的認知，讓資源能在永續觀念下不斷回收與使用，如此資源化的效益才能持續提升。 The Tin-Lead alloy is widely applied on the weld material of electronic elements and circuit base plates. The main composition of Tin-Lead alloy weld material is 37wt% of Plumbum and 63wt% of Stannum. Tin-Lead dreg is the offal of weld which is applied on electronic industry. For the purpose of discussing the most fitting terms and economic benefits of that, this research takes one Tin-Lead weld dreg processing factory in Taiwan as an example to do a case study by adopting the practical operation method on the spot of that factory. On one hand, take the heat as one operation factor and melt the dreg in crucible by controlling of temperature from 250 Centigrade degree to 950 Centigrade degree. On the other hand, take voltage as the other operation factor and bridle the tension from 1V to 4V by acid liquid electrolytic purification method. This study shows the result that the lead content of abolish Tin-Lead alloy weld material is lower than 0.5% by melting and refining between 650 Centigrade degree under temperature experimentation, which meets the standard composition of the row material and inclines the operation cost. The economic profit of recycling is over than 33.18 million NT dollars and the amount of re-use is over than 183 metric ton which is revealed on the statistical information at the duration from June 13, 2005 to December 13, 2006. We can get obvious result that the recycling of the dreg has economic benefit. On the other hand, in order to meet the specifications of RoHS, one must get rid of lead from the Tin-Lead alloy. This research exhibits that the quality meets regulation of RoHs and possesses economic benefits of recycling when the voltage mode is 3V on the pattern of acid liquid electrolytic purification. This research looks forward to offer the multitude to recognize the contribution of recycling, and let resources can be retrieved and utilized, so that the benefit of recycling can be improved continuously.
