PRODUCTION OF ENDLESS TRACK TYPE ION EXCHANGE SEPARATOR

摘要

PURPOSE: Provided is an endless track type ion exchanger separator which is characterized by using ion exchange non-woven fabric to recover high precious metals(U, Li, B, V etc.) from brine and high concentrated seawater. Accordingly, the ion exchanger separator enables adsorption, desorption, washing and concentration at the same time. CONSTITUTION: The endless track type ion exchange separator is produced by installing an ion exchange non-woven fabric in a shape of conveyor belt, not a column. The belt type ion exchange non-woven fabric is prepared by needle punching a non-woven fabric and connecting the ends of non-woven fabric with 2-20mm thickness and 200-600mm width. The non-woven fabric uses ion exchange fibers with one or more of functional groups based on amidoxime adsorbing uranium selectively, sulfonic acid, carboxyl and phosphoric acid or copolymers such as polypropylene sulfonate-styrene, polypropylene amidoxime-acrylo nitrile, poly propylene-acrylic acid, etc. The resultant endless track type ion exchanger separator enables adsorption, desorption and washing consecutively, and doesn't discharge acid washer after desorption unlike conventional column type separator.