MANUFACTURE METHOD OF LIGHTWEIGHT AGGREGATE RADIATING FAR-INFRARED RAYS BY USING SERICITE OR OCHER

PURPOSE: A method for preparing a far-infrared rays radiating aggregate by using sericite or ocher is provided which produces the lightweight aggregate having better properties by simple and economic process. CONSTITUTION: The method comprises steps of: (i) mixing 80-50 wt.% of pulverized sericite or ocher with 20-50 wt.% of either common cement or lime and 50 wt.% of hot water at 60 deg.C to prepare a slurry; (ii) after adding 0.1-0.3 wt.% of aluminum powder regarding total weight to the slurry of the step (i) with stirring, putting the mixture slurry in a moisture box at a temperature of 60 deg.C for more than 30 minutes; and (iii) after vapor-curing the product of the step (ii) at a temperature of 90 deg.C for 6 hours in a curing machine to obtain hardened materials, pulverizing the hardened materials.