Patent ID: 9120100
Filing Date: 2015-09-01
Classification: B02C,B26D,B29B

Abstract:
1. A method for preparing a super absorbent polymer, comprising: preparing a monomer composition including an aqueous ethylene-based unsaturated monomer, and a polymerization initiator; supplying the monomer composition to a polymerization reactor including a conveyer belt and applying UV radiation or heat onto the supplied monomer composition on the conveyer belt to prepare a plate-shaped super absorbent polymer; supplying the polymerized plate-shaped super absorbent polymer to a shredder for super absorbent polymer to perform a primary pulverization; drying the pulverized super absorbent polymer; and performing a secondary pulverization for the dried super absorbent polymer wherein the shredder for super absorbent polymer comprises: an inlet portion for feeding the plate-shaped super absorbent polymer from the polymerization reactor; a pulverizing portion for pulverizing the super absorbent polymer fed through the inlet portion; and an outlet portion for discharging the pulverized super absorbent polymer from the pulverizing portion, wherein the pulverizing portion comprises: a rotary drum having a plurality of rotary blades attached thereto; at least fixed blade for pulverizing the super absorbent polymer in cooperation with the plural rotary blades; and a housing for holding the rotary drum and the at least one fixed blade mounted therein, wherein the rotary blades has a shape of polygon with at least one vertex having an acute angle of at most 45°.