FIELD: leaching and dissolution processes with contact of liquid and solid granular material. SUBSTANCE: device has body 1 with conical and cylindrical sections, mixing member in the form of flexible anchor rings 6,9, drive in the form of reversible drum 8 mounted in cylindrical section of body 1 and connected by tie-rod 7 to anchor rings, branch pipes 3,4,5 for feeding and withdrawal of granular material and fluidal medium. EFFECT: enhanced operating reliability. 1 dwg
