METHOD FOR PREPARING MOISTURE ABSORBENT BY MIXING WASTE GYPSUM AND CALCIUM CHLORIDE OR MAGNESIUM CHLORIDE, AND MOISTURE ABSORBENT PREPARED USING THE METHOD

摘要

PURPOSE: To prevent absorbed water from being released from moisture absorbent and absorb large amount of moisture with only small amount of moisture absorbent. CONSTITUTION: The method comprises steps of (a) pulverizing waste gypsum to obtain gypsum particles having a size of 1 to 3 mm; (b) after impregnating the pulverized gypsum particles with a calcium chloride solution or a magnesium chloride solution at a concentration of 10 to 50%, taking the gypsum out of the solution; and (c) heating, drying, cooling and packing it.