The development of high-intensity extractors operating in the pre-emulsion regime is a promising task in the field of - and -element extraction. In this work, a microcontactor is presented in which it is possible to extract 20% REEs from the initially taken amount in 34 s of phase contact. The influence of the composition of the extraction system, the nature of the solvent and REE, and the initial conditions of the process on the mass transfer coefficient has been established. The dependence of the Sherwood number on the Reynolds and Prandtl numbers was obtained. The results of the work can be useful for creation of new extractors operating in pre-emulsion mode.
Golubina et al. (Wed,) studied this question.