Novel method to synthesis of single phase zirconolite ceramic

Abstract

Single phase zirconolite (CaZrTi 2 O 7 ) was synthesised by a novel method using acid corrosion to treat zirconolite-diopside mixture powders (2CaZrTi 2 O 7 -Mg2Si 2 O 6 ). The mixture powders were prepared by solid state reaction method at 1200uC for 2 h. Single phase zirconolite powders were obtained by acid corrosion method with 5% hydrofluoric acid on the zirconolite-diopside Synroc mixture powders and washed with 10% acetic acid.

Two‐step synthesis of zirconolite‐rich ceramic waste matrice and its physicochemical properties

“…However, single‐phase zirconolite can hardly be obtained from this melting method as ZrTiO 4 and rutile were inevitably generated during the crystallization process. On the other hand, Wang et al have developed two‐step synthesis of single phase zirconolite powders by acid corrosion on zirconolite‐diopside mixture powders (CaZrTi 2 O 7 ‐Mg 2 Si 2 O 6 ).…”