MULLITE CBC-MATERIAL FOR PRODUCTION OF REFRACTORY MATERIALS Russian patent published in 2003 - IPC

FIELD: refractory materials. SUBSTANCE: invention relates to refractory alumosilicate materials, namely, to refractory mullite materials with stoichiometric ratio of indicated oxides corresponding to the chemical formula 3Al₂O₃•SiO₂. CBC-Material shows the following composite of the parent mixture, wt.-%: fly-ash from central heating and power plant, 74-85; aluminum, 12-18; clay, 3-5; 20% solution of water glass, as % of mixture mass, 10-15. Indicated mullite material for slip coating can comprise additionally potassium tetrafluoroborate taken in the amount 2-3% of the parent mixture mass. The ratio of components of the parent mixture provides preparing refractory material with content of mullite 65- 68%. The use of fly-ash from central heating and power plant taken in the large amount promotes to decrease cost of production due to reduction of aluminum amount added and the expansion of raw base. EFFECT: improved and enhanced effectiveness of materials. 2 cl, 1 tbl