Abstract: A process is provided for preparing crystalline ceramic superconductor materials, which comprises preparing a mixture of particulate crystalline ceramic superconductor precursors selected to form upon heat processing a crystalline ceramic superconductor material; subjecting said mixture to calcination at an elevated reaction temperature sufficient to form a crystalline ceramic material, while entraining and fluidizing said mixture in a flow of hot calcining gas; and then quenching the crystalline ceramic material to a temperature below calcination temperature; the quenching step can be followed by annealing and cooling the resulting crystalline ceramic material in the presence of oxygen to form and maintain a selected superconducting crystalline structure in the material.