Extraction rate of nickel with 5-dodecylsalicylaldoxime in a vibro-mixer

The experimental results correlated to the complete mixing flow of both fluids in the extractor were analyzed based on the interfacial reaction rate. The calculated results for each frequency of vibration plates were well explained by the experimental results. The average extraction rate in the vibro-mixer type extractor was interpreted based on a similar interfacial reaction equation derived in a Lewis-type transfer cell. The average extraction rate constants obtained in the vibro-mixer type extractor were 102- to 103-fold larger than that in the Lewis-type transfer cell. The mixing using the vibro-mixer type extractor generates and regenerates small droplets at high speed, causing enhancement of the interfacial area and the surface renewal rate.