APPARATUS FOR ION-EXCHANGE PROCESSES Russian patent published in 1998 - IPC

FIELD: chemical engineering. SUBSTANCE: invention relates to ion-exchange sorption, leaching, and dissolving processes in liquid-solid systems. Apparatus contains casing with supply and discharge pipes enclosing, mounted on its shaft, contact facilities made in the form of perforated segment elements with inclined helicoid appearance, its generatrix intercepting its axis at an acute angle, the radius in its cross- section gradually increasing according to Archimedes spiral and the height being equal to pitch of discontinuous screw surface in its maximum cross-section. EFFECT: improved design. 2 cl, 5 dwg