Refractory Cone Molded and Unshaped Aluminosilicate refractory materials Aluminosilicate refractories (alumina-silica refractories) are refractories made primarily from A12O3 and SiO2. Depending on the amount of A12O3 content, such Refractory Cone are: – semi-acidic (A12O3 content – from 14 to 28%); – chamotte (A12O3 content – from 28 to 45%); – high alumina (A12O3 content – […]