• 作者： Tai, Clifford Y.; Lin, Chyuan-Ming
• 中文摘要： 此研究選取硼砂為物系以探討晶體在攪拌槽之成長動力學,乃鑑於其寬廣之亞穩區。晶體之成長速率是由溶液的降飽和曲線決定之,此速率數據再以雙重阻力模式分析之。此實驗採用不鋼及鐵氟龍兩種不同材質之攪拌葉片。由此實驗得知葉門之材質不會影響晶體成長速率; 質傳及表面反應係數隨粒徑增大; 當粒徑大於1,000微米時,表面反應係數在攪拌槽內會趨於定值。
• 英文摘要： Borax crystal was chosen as a model substance to study the growth kinetics of crystal grown in a stirred vessel because of its wide metastable region. The crystal growth rates were determined from the desupersaturation curve of the solution. Then the rate data were analyzed using the two-step crystal growth model. Two types of impeller, stainless-steel and Teflon-coated, were employed in this experiment. It was found that the material of impeller did not influence crystal growth kinetics. The mass-transfer and surface-reaction coefficients increased with an increase in crystal size, and the surface reaction coefficient approached a constant when the size of seed crystal exceed 1,000.mu.m.
• 中文關鍵字： 晶體成長; 攪拌槽; 質量傳遞; 動力學; 結晶
• 英文關鍵字： Crystal Growth; Stirred Tank (Agitated Vessel); Mass Transfer; Kinetics; Crystallization