• 作者： Ju, Shin-Jon; Chiu, Tai-Ming; Hoh, Ying-Chu
• 中文摘要： 本文利用銅-LIX 64N萃取系統來探討槽規模、攪拌翼幾何結構、與翼-槽直徑比等因素對使用泵混式攪拌翼之盒式混澄器的混合效率之影響。本研究之實驗共使用三種不同之攪拌槽,其有效容積分別為2,10與50公升等。每一攪拌槽都分別配以五種不同之攪拌翼來操作; 其翼-槽直徑比值分別為0.4,0.5與 0.6,而翼片數目為4.6與8等。實驗所得之批次萃取曲線則以介面反應控制模式來模擬以求得混合效率參數(K/sub r/a)之數值。在雙對數座標上將 K/sub r/ a對單位體積攪拌功率消耗(PN)作圖顯示其結果可以一斜率為0.4之直線表示之。三個攪拌槽共十五個不同攪拌翼在相同之P/V下操作其所得之K/sub r/a值均相同,這結果顯示:以盒式混澄器配以泵混式攪拌翼來進行有機溶劑金屬離子萃取,如銅-LIX64N,之操作時,其攪拌槽之設計可以根據等P/V之基礎來進行規模放大。
• 英文摘要： The effects of vessel size, impeller geometry, and impeller-to-tank diameter ratio on the mixing efficiency of a box-type mixer-settler with a pump-mix type impeller were studied via the copper-LIX64N extraction system. The effective volumes of the vessels employed in the present work were 2, 10, and 50 liters, respectively. Each of the three vessels was operated with five different impellers having impeller-to-tank diameter ratios (D/T) of 0.4, 0.5, and 0.6, and blade numbers (n/sub b/) of 4,6, and 8. The batch extractional curves obtained experimentally were simulated by an interfacial reaction control model to obtain the values of the mixing efficiency parameter (k/sub r/a). From the log-log plot of k/sub r/a versus impeller power consumption per unit volume (P/V), it was found that the data were well correlated by a straight line with a slope of 0.4. The same value for the k/sub r/a. was obtained for the three vessels and fifteen impellers at the same level of P/V. It is inferred that scale-up of the mixer of a box-type mixer-settler with a pump-mix type impeller can be done on the basis of constant P/V level for metal extractions with organic solvents such as the copper-LIX64N system.
• 中文關鍵字： 混澄器規模放大; 動業輪功率消耗; 溶劑萃取; 銅-LIX64N系統
• 英文關鍵字： Mixer-Settler Scale-Up; Impeller Power Consumption; Solvent Extraction; Copper-Lix64N System