FOAMED VITROCRYSTALLINE MATERIAL AND METHOD OF PRODUCTION OF SUCH MATERIAL Russian patent published in 2006 - IPC C03C11/00 

FIELD: manufacture of building materials; production of foam silicate.

SUBSTANCE: proposed foamed vitrocrystalline material has foamed structure at density of 150-1000 kg/m³. Material contains α-quartz as crystalline phases with three specific plane-to-plane distances: 0.425 nm, 0.335 nm and 0.182 nm; Na₂Si₂O₅ with three specific plane-to-plane distances: 0.495 nm, 0.268 nm and 0.166 nm; CaO·Al₂O₃ with two specific plane-to-plane distances: 0.297 nm and 0.252 nm. Foamed vitrocrystalline material is produced from powder-like mixture of glass, quartz sand and gas-forming agent. Then aqueous solution of sodium silicate in form of water glass and SiO₂ in form of sand ground to size of particles lesser than 0.1 mm are added to mixture. Water-containing paste thus obtained is kept till monolithic block is formed and is heated to foaming at 750-850°C, thus obtaining silicate material of foamed structure at density of 150-1000 kg/m³.

EFFECT: facilitated procedure of process; improved characteristics of material.

3 cl, 3 ex