Antimicrobial ceramic tile and manufacturing method thereof

A manufacturing method of an antimicrobial ceramic tile, comprising:

• a step of forming a body of the ceramic tile comprising:
• a step of forming a green body:
• grinding soils into slurries, drying the slurries into powders by hot air, and pressing the powders into the green body through a molding machine;
• a step of forming an engobe:
• dotting or spraying or showering a glaze slurry on the surface of the green body to form an engobe;
• and
• a step of forming a ground glaze:
• dotting or spraying or showering or ink jet printing or screen printing or roller printing the glaze slurry on the engobe to form the ground glaze;
• a step of forming an antimicrobial glaze:
• mixing a surface glaze and an antimicrobial material into an antimicrobial glaze in a weight ratio of 100:5 to 10;
• grinding water and the antimicrobial glaze in a weight ratio of 5 to 6:4 to 5;
• and then dotting or spraying or showering the antimicrobial glaze on the ground glaze;
• and
• a step of firing:
• firing rapidly the ceramic tile and the antimicrobial glaze into an antimicrobial ceramic tile at a firing temperature,
• wherein the antibacterial agent is composed of coated nano zinc oxide powders, coated nano copper oxide powders, or a mixture of the coated nano zinc oxide powders and the nano copper oxide powders, and
• the coated nano zinc oxide powders are formed by coating the nano zinc oxide powders with silica sol.