
Plate Calcined Alumina for polishing optical glass in crystal displays
What is “Plate Calcined Alumina”? “Plate” or “Platy”: Refers to the hexagonal plate-like shape of the individual alpha-alumina (α-Al₂O₃) crystals. This is the defining feature that enables its superior polishing performance (as explained in the previous answer). “Calcined”: This is a high-temperature thermal treatment process. A precursor material (often a high-purity aluminum hydroxide or transition alumina) is heated



