近年來奈米材料技術進步快速，隨著材料尺寸之細緻化，許多新發展之奈米技術隨之被大量應用於高科技商品，例如噴墨印表機墨水及紡織品染料等，但是研磨料與原材料於最終階段之分離過程卻因為奈米材料之高表面能，形成量產製程技術之發展瓶頸；本論文之主要目的為建立導磁性研磨料之製程分離技術，將研磨完成之混合原料以習知之磁流體混合及分離方式，將磁性磨料與原材料於電磁力作用下分離開，同時仍將保持原材料於奈米狀態下之分佈溶液，並輸送至下游之封裝設備。

本論文先以文獻蒐集及專利分析進行文獻上之回顧分析，整理出基本設計參數後開始進行分離系統之設計，經理論分析後，採用靜力平衡方式分析單一鋼球在靜止流場及流動流場情況下，欲進行分離所需之磁力；再以商用套裝軟體進行電磁場分析，求得電磁鐵產生之磁場強度與該環境下鋼球所受之磁力；最後於實驗室中組裝簡易之實驗測試裝置，進行設計參數與磁力分離效果之驗證，藉由設計、分析、模擬與實驗驗證四大研究步驟，使磁力分離系統之設計達到期望之目標。

關鍵詞：奈米混鍊，磁流分離，電磁鐵。

With the fast development of nano technologies, some of the applications have been recently employed for high-tech products in mass production as particle sizes are being miniaturized; for example, ink for inkjet printers and fabric dyes are the typical ones. However, due to the high surface energy characteristics of nano materials, the separation of raw materials and grinding media has become the bottleneck during mass production. The main objective of this thesis is to develop a novel separation method for preparing nano-particle mixtures such that the magnetic grinding fillers can be separated via electromagnetic forces from the suspensions without disturbing the dispersed state ready for down-stream packaging.

At first, literature survey has been conducted for providing patent analysis and intellectual properties reviews. The basic design parameters have been rendered after the preliminary survey. In theoretical analysis, the required magnetic forces for holding steel-balls immersed in steady-state and laminar flow have been calculated via hydrostatic force-balance analysis. Then, the magnetic field generated by electric magnets has been simulated by making use of commercial magnetic field analysis packages. Then, a down-scaled experimental apparatus was built in-house for verification and comparison purposes. By going through pre-selected processes for design, analysis, simulation and experimentation, the current magnetic separation system has fulfilled the design expectation. Finally, the method will be promising for future applications in the nano materials industry.

Keywords: Nano Mixing, Magnetic Separation, Electromagnetic Magnets.

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