Porous structure formation in granulated zeolite-containing glass ceramic material with alkali additives

The possibility of obtaining foam glass-crystalline material from zeolite-containing rocks is considered. It was found that grinding the zeolite-containing raw material to a particle size of less than 0.50 mm and the addition of 13.8% alkali provides the material at a firing temperature of 850 ° C with a bulk density of 340 kg / m ³ , strength 1.6 MPa and water absorption 13%. Granular foam zeolite with the addition of alkali is a glass-crystalline material with a higher strength compared to foam glass. Tab. 1, ill. 4, bibliography: 5 titles.