METHOD FOR OBTAINING CONSTRUCTION MATERIAL Russian patent published in 2008 - IPC C04B28/26 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention concerns building industry, particularly a method for obtaining construction material from widely spread and easily accessible raw materials. The method for obtaining construction material involves mixing of clint, alkali and water to produce homogenous mass, its maturing for hydrosilicate formation, and further burning. The clint contains, in wt %: SiO₂ 30-98, AL₂O₃ up to 20, Fe₂O₃ up to 8, CaO up to 25, MgO up to 8. It is dried and processed by heat at 250-700°C for at least 0.5 hour, milled into fraction with the size of less that 5 mm, then mixed at the following component ratio, in wt %: silica-containing component 60-98, alkali 2-40, water 0-100 of dry component mass. The maturing is carried out at the temperature ranging from 0 to 150°C for at least 0.2 hour, further on the drying and thermal processing are carried out at 250-700°C for at least 0.5 hour. The invention is explicated in the clauses.

EFFECT: improved operation properties of construction material and use of easily accessible components for its production.

11 cl, 4 ex