METHOD AND APPARATUS FOR CONTINUOUSLY CALCINING GYPSUM

摘要

An apparatus for continuously calcining gypsum includes a flash calcining impact mill, a feed bin adjacent the impact mill for holding gypsum, and a gypsum feed control mechanism for supplying gypsum from the feed bin to the impact mill at a substantially constant rate. A method for continuously producing calcined gypsum includes the steps of providing a flash calcining impact mill and providing a feed bin adjacent the impact mill, the feed bin containing gypsum to be calcined. A gypsum feed control mechanism is provide d for supplying gypsum from the feed bin to the impact mill. Gypsum is supplie d from the feed bin to the impact mill at a substantially constant rate, and t he impact mill is operated to dry, grind, and calcine the gypsum.