利用銅製造業集塵灰製備硫酸鋅之研究;Preparation of Zinc Sulfate use Industrial Copper Dust

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题名:	利用銅製造業集塵灰製備硫酸鋅之研究;Preparation of Zinc Sulfate use Industrial Copper Dust
作者:	鄭伃君;chun,Cheng-yu
贡献者:	環境工程研究所在職專班
关键词:	銅製造業集塵灰;溶提;結晶;硫酸鋅;經濟效益分析
日期:	2014-07-17
上传时间:	2014-10-15 17:21:36 (UTC+8)
出版者:	國立中央大學
摘要:	我國的天然資源相當欠缺，其中金屬礦產資源尤其匱乏，但隨著經濟發展台灣的金屬消費量與日俱增，而不得不仰賴進口，以取得支持經濟發展所必需的金屬。銅製造業之集塵灰目前主要處理方式為固化處理或化學處理，因此，為兼顧政府政策發展與滿足經濟發展需求，本研究將集塵灰資源化成可再利用之產品，同時探討不同的實驗操作參數，尋求最佳操作之條件。研究結果顯示，本研究所收集之集塵灰鋅含量平均為57.25％、銅含量平均為5.38％﹐溶提部分原料的最佳配比以集塵灰：硫酸：水的1：2：3為最佳，30N的硫酸為最佳的硫酸濃度，150rpm為溶提時攪拌的最佳轉速，180分鐘為最佳溶提時間，40℃則為最佳的溶提溫度。結晶方法以匯集所有結晶優點的真空濃縮結晶法為最佳，其中以80℃的水域溫度所得到的硫酸鋅總鋅含量最高，又有結晶時間短及能源消耗少的優點。以SEM-EDS分析顯示在不同條件下製備所得樣品其所組成的元素皆為鋅、氧、硫3種成分﹐以XRD分析結果所有製備之樣品皆為一水硫酸鋅﹐TEM與BET等特性分析後，可得知其成晶狀況良好具完整晶體形狀，比表面積小︒經濟效益分析﹐以投資效益推算增設此條生產線預估可回收年限為0.42年。此外，本研究仍有許多參數有賴後續研究，才得以應用於實場。關鍵詞：銅製造業集塵灰、溶提、結晶、硫酸鋅、經濟效益分析 ;Abstract There is lack of natural resources and mineral resources, especially scarce metal in our country. With the growth of economic development, Taiwan has increased the consumption of metal gradually in these decades, and has to rely on import of these kinds of resources in order to obtain the necessary support of metal for economic development. The current industrial copper dust is curing or chemical treatment. Therefore, to satisfy with both government policy development and needs of economic development, this study gathers dust resources into product reuse, and explores the different experiments operating parameters, seeking for the optimum operation conditions. The results show that zinc content of the flue dust collected in this study has an average of 57.25 percent, an average of 5.38 percent copper content. The raw materials evaluates best ratio in the flue dust: Sulfuric acid: water as 1:2:3, 30N sulfuric acid concentration 150rpm for the speed when evaluating stirring, 180 minutes for the solvent extraction time, and 40 ℃ are the best solvent extraction conditions. Vacuum concentration crystallization is the best that bring together all the advantages and this method has advantages of short crystallization time and less energy consumption. In SEM-EDS analysis, it show that the elements of its composition under different conditions are zinc, oxygen, sulfur. All samples were analyzed by XRD and the result show that they are prepared as zinc sulfate monohydrate. After TEM and BET characterization, it is confirmed as a perfect crystal grain in good shape. Economic analysis of calculating the return on investment estimates the recyclable life of adding this production line is 1.45 years. The study is currently not applicable to the real field, because it still relies on many undergoing follow-up studies. Keyword：industrial copper dust collection、chemical eluviation、Crystallization、Zinc Sulfate、Economic Benefit Analysis
显示于类别:	[環境工程研究所碩士在職專班] 博碩士論文

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