METHOD AND DEVICE FOR RECIRCULATION OF HEAVIER SOLUTION FROM UNIT SEPARATING TWO SEPARABLE SOLUTIONS TO MIXING UNIT Russian patent published in 2002 - IPC

FIELD: methods of extraction of liquids. SUBSTANCE: part of circulating solution is returned to mixing unit from upper flow of solution being separated of unloading end of separating unit. Front end of separating unit has dispersion of phases and separated solutions flow through at least one lattice partition forming limited transversal surface. Main part of heavier circulating solution is obtained directly from separating unit over entire width from bottom of separating unit or from separating unit lengthwise between last lattice partition and point of unloading the lighter solution contained in separating unit. Device for circulation of heavier solution from separator to mixing unit of the same stage includes at least one pumping unit or mixer, separator whose front end is provided with at least one lattice partition, circulating pipe line and at least one passage for heavier solution extending over entire width of separator. Unloading end is provided with drain chute for upper of flow of organic solution and drain chute for upper flow of heavier solution. Collector passage is located in bottom portion of separator and suction branch pipes are inclined from channel towards solution being collected. EFFECT: facilitated extraction of separating solutions. 13 cl, 4 dwg, 1 tbl, 1 ex