Abstract: A honeycomb-shaped ceramic structure having dehumidifying capacity formed by extruding into a honeycomb shape a composition containing zeolite powder having moisture adsorbing property, inorganic fiber, and inorganic binder and by baking the composition in the honeycomb shape. The product displays an excellent dehumidifying capacity at a relatively high temperature of 50.degree.-100.degree. C. The honeycomb-shaped ceramic structure is produced by extruding the composition containing zeolite powder, inorganic fiber and inorganic binder into a honeycomb shape and by baking it at 400.degree.-700.degree. C. after drying.

Abstract: A drying and crystallizing apparatus for granules, which is provided in a heating tank formed in the shape of a rectangular parallelepiped with a plurality of spaced-apart disc-like partitions forming therebetween a plurality of partitioned spaces across a material inlet and a material outlet, the partitions being rotatably suppported on a rotary shaft and provided with agitating vanes respectively, so that the granules are heated efficiently and uniformly by use of a microwave unit without heating variations, thereby enabling the granules to be dried or crystallized in a short time.