Process for classifying particulate hydrophilic polymer and siev

Details Process for classifying particulate hydrophilic polymer and siev Process for classifying particulate hydrophilic polymer and siev

1998-01-20

2000-12-26

Walsh, Donald P.

Classifying, separating, and assorting solids

With heat treatment

209235, 209238, B07B 100, B07B 146

Patent

active

061644552

ABSTRACT:
The present invention provides a process for classifying a particulate hydrophilic polymer and a sieving device, which can carry out a classification in a small separation particle diameter with high efficiency and exhibit classification ability inherent in the sieving device. The process comprises the step of classifying a particulate hydrophilic polymer in dry particle size with a sieving device, wherein the sieving device is used in a heated and/or thermally insulated state. The sieving device comprises a thermally insulating means.

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