The Utilization of Waste Magnesite in the Production of the Cordierite Ceramic

Cordierite ceramics comprises MgO as the main ingredient. In this work, cordierite composition was prepared with raw magnesite (CR) and with waste magnesite (CW) generated during the magnesite processing, sintered at various temperatures, between 1250-1350 °C, and heating rates, and then samples were analyzed with DTA, XRD and their bulk density, water absorption and porosity were determined. The cordierite composition prepared with waste magnesite and sintered at 1325 °C and 3 °C/min heating rate, produced a single-phase cordierite with 1.64 g/cm3 bulk density, and 36.5%, and 22.5% porosity and water absorption, respectively, which demonstrates its suitability for the cordierite production.