| abstract |
Disclosed is a method for producing a particulate water absorbent, which can contribute to the improvement in physical properties of the particulate water absorbent and also contribute to the improvement in productivity of the particulate water absorbent or the like. An embodiment of the method for producing a particulate water absorbent comprises the following steps: a polymerization step of producing a polymerized gel; a drying step of drying the polymerized gel to produce a dried material; a pulverization step of pulverizing the dried material or the polymerized gel to produce a particulate water-absorbable resin; a classification step of sieving the particulate water-absorbable resin; a granule sizing step of sizing a particulate water absorbent produced from the granule water-absorbable resin; and a transport step of transporting a product produced in each of the above-mentioned steps to another step. Preferably, at least one step selected from the pulverization step, the classification step, the granule sizing step, and the transport step after the pulverization step is carried out under a reduced pressure. |