To provide a method of treating gypsum board waste capable of treating a gypsum board waste with good efficiency and at a low cost without introducing a new process and new equipment, and a method of manufacturing cement capable of utilizing the gypsum board waste as a gypsum component for cement.
The method of treating gypsum board waste of the invention is for making the gypsum board waste into an anhydrous gypsum by using a clinker cooler 4 of cement firing equipment, and characterized in that crushed matter Wc of a gypsum board waste W is fed onto a cement clinker C in the clinker cooler 4, the crushed matter Wc is changed to a II-type anhydrous gypsum, and at the same time, organic matters such as board paper and a surfactant contained are thermally decomposed.
AOKI HIDEKI
OISHI HIDEO
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
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