摘要
The controlling step and the extraction reaction rate equation of zinc extraction from Zn（II）-NH3 solution by using a newly synthesized organic compound, 2-acetyl-3-oxo-dithiobutyric acid-myristyl ester as the zinc extractant, were clarified. The effects of agitation speed, specific interfacial area, temperature, extractant concentration and Zn ion concentration on the extraction rate are studied in constant interfacial area cell. The results show that the extraction rate depends on interfacial chemical reaction and diffusion by using this new extraetant to extract zinc, and the apparent activation energy of this extraction reaction is measured as 28.2 kJ/mol, which demonstrates that the extraction reaction is controlled by the mixed-controlled reaction rate. The apparent reaction orders a and b are measured as 1 and 0.38, and the constant k0 is 138.70. So, when extraction conditions are controlled as [HR]=20%-50%, T=0-30℃, N=120-177 r/min and S=72.6-127.5 m-1, the solvent extraction reaction rate can be depicted as v/（mol . m-2 . s-1 ） = 138.7. exp（ - 28 206/8.314T ）. [Zn 2＋ ]r ·[HR ]o0.38.
控制的步和从 Zn (II )-NH<sub class= 的锌抽取的抽取反应率方程“ a-plus-plus ” > 由使用最新综合的有机化合物的 3 </sub> 答案，是的 2-acetyl-3-oxo-dithiobutyric acid-myristyl 酉旨锌提炼之物，被澄清。抽取率上的焦虑速度，特定的界面的区域，温度，提炼之物集中和 Zn 离子集中的效果在经常的界面的区域房间被学习。结果证明抽取率由使用这新提炼之物提取锌，和这的明显的激活精力取决于界面的化学反应和散开抽取反应作为 28.2 kJ/mol 被测量，它证明抽取反应被控制混合的反应率控制。and b 作为 1 和 0.38 被测量的明显的反应订单，和经常的 k < 潜水艇 class= “ a-plus-plus ” > 0 </sub> 是 138.70。那么，抽取什么时候调节，是被控制[HR ]=20%50% ，
基金
Foundation item： Project（51174240） supported by the National Natural Science Foundation of China
Project（2006BA02B04-4-2） supported by the National Eleventh Five-Year Research Program of China
Project（20100908） supported by Scientific and Industrial Research Organisation of Guangdong Province, China
