METHOD FOR DISPERSING TWO PHASES IN A SOLVENT EXTRACTION PROCESS AND A PUMP MIXER FOR REALIZING THE METHOD

摘要

(57) ABSTRACTThe invention relates to a method for dispersing the two liquid phasesof a solvent extraction process well together, for controlling thedesired type of dispersion and for raising the created dispersion to alevel essentially higher than the liquid surface in the mixing tank. Inthe apparatus of the invention, to the circulation cylinder (6) of themixer there is connected the heavy phase return conduit ( 27) and thelight phase return conduit (29) entering from the settler of the sameextraction step. In the top part of the mixer, coaxially with the tur-bine pump 19), there is installed the dispersion pump (12) where thedispersion rises to above the liquid surface (8) of the mixer through2-24 rising pipes (15). The top ends of the rising pipes (15) are con-nected to the circular pipe (18), wherefrom the dispersion flow is con-ducted to the next stage through the collecting trough (22).