Method of drying a material having a cohesive phase

   
   

A method for drying a material such as a polymer hydrogel which passes through a cohesive phase as it dries is disclosed. The method comprises agitating a composition while removing liquid until the solids content of the composition reaches a level at which the composition enters a cohesive phase, halting agitation, removing liquid from the composition in the absence of agitation, and resuming agitation. Practice of the present invention can eliminate the problems associated with adhesion of a material to itself and to process equipment during the cohesive phase.

Um método para secar um material tal como um hydrogel do polímero que passe com uma fase cohesive enquanto seca é divulgado. O método compreende agitar uma composição ao remover o líquido até que o índice de sólidos da composição alcance um nível em que a composição incorpora uma fase cohesive, agitation parando, removendo o líquido da composição à ausência do agitation, e recomeçando o agitation. A prática da invenção atual pode eliminar os problemas associados com a adesão de um material a se e ao equipamento process durante a fase cohesive.

 
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