▎ 摘　　要

NOVELTY - Negative ion ceramic tile comprises sodium feldspar, diatomite, rare earth material, sepiolite, activated bauxite, graphene, and medical stone. USE - Negative ion ceramic tile. ADVANTAGE - The negative ion ceramic tile can release negative ions, thus suitable for healthcare and environment-friendly industry. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of negative ion ceramic tile by mixing raw materials of tile blank; uniformly stirring; ball-milling; passing powder through 250-meshes screen; stirring and aging for 2-3 days; drying to obtain ceramic green body powder; aging for 3 days; pressing powder into green body; drying at 130 degrees C; sequentially heating green body at 350-400 degrees C and at 500-600 degrees C; and calcining at 1250-1300 degrees C for 40-50 minutes under nitrogen atmosphere to form tiles.