Method of manufacturing gypsum for the production of a gypsum molded product from gypsum board waste

摘要

A method of manufacturing hemihydrate gypsum powders for the production of a gypsum molded product from gypsum board waste, comprising at least the following two steps in a random order:
a compression step for compressing gypsum obtained from gypsum board waste; and
a baking step for converting dihydrate gypsum obtained from gypsum board waste to hemihydrate gypsum.