KERASAND Aluminous grit for refractory and abrasive use. Grain Size 0 – 1 mm 0 – 3 mm upon request CHEMICAL ANALYSIS Al2O3: ≥ 78% SiO2: ≥ 17% ZrO2: ≥ 5% Fe2O3: ≤ 0,25% DIFFRACTOMETRIC ANALYSIS Corundum: 31% Mullite: 64% Badelleyite: 5% Glassy phase: traces