METHOD OF MANUFACTURING OF DECORATIVE FILLING MATERIAL Russian patent published in 2009 - IPC C04B20/02 C04B14/12 

FIELD: construction.

SUBSTANCE: clay mixture is prepared, wetted, granules are formed, dried, burned and cooled. Prepared on the bases of low - melting clays mass is damped up to 17-23%, formed grains are dried reaching humidity of 1-6%, burned at 1100°C within 10-20 minutes, cooled down to 20-50°C, damped by immersion into the vessel with water solution of sodium chloride and exposed for 24 hours. Been reached out from the capacity, grains are dried reaching humidity rate of 5-8%, burned at 1100°C within 10-20 minutes and cooled.

EFFECT: enhanced cold resistance property of keramzite gravel and its improved ornamentality.

2 cl, 1 ex