FIELD: equipment for ion-exchange processes; chemical, hydrometallurgical and other industries. SUBSTANCE: proposed ion-exchange apparatus has housing with phase inlet and outlet branch pipes and contact helical units arranged inside it; housing is additionally provided with at least two cylinders located in parallel relative to each other; contact helical units rotate in opposite directions. Helix angles of each pair of cylinders are directed to opposite sides. Helical units are made in form of Archimedean spirals with perforated surface. EFFECT: extended functional capabilities; increased productivity. 3 cl, 1 dwg
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