Antibacterial ceramic tile and preparation method thereof

A preparation method for an antibacterial ceramic tile, comprising:

• applying an antibacterial protective glaze containing Ulan tea-quartz on a surface of a green body;
• and
• firing to obtain an antibacterial ceramic tile, wherein
• a mineral composition of the antibacterial protective glaze includes, in percentage by mass:
• Ulan tea-quartz:
• 35% to 45%, clay:
• 15% to 25%, Ca—Mg—Ba—Zn flux mineral:
• 30% to 42%, and alumina:
• 5% to 8%;
• the Ca—Mg—Ba—Zn flux mineral is flux mineral containing calcium oxide, magnesium oxide, barium oxide and zinc oxide, used to adjust a high-temperature viscosity of the antibacterial protective glaze, glossiness, and flatness of the surface;
• and the clay is an aluminum silicate with bonding and plasticity;
• and the barium oxide contained in the Ca—Mg—Ba—Zn flux mineral is added in the form of barium carbonate;
• a chemical composition of the Ulan tea-quartz includes, in percentage by mass:
• SiO2:
• 70% to 80%, Al2O3:
• 10% to 15%, Fe2O3:
• 0.05% to 0.15%, P2O5:
• 0.25% to 0.35%, CaO:
• 0.5% to 1.0%, MgO:
• 0.1% to 0.3%, K2O:
• 4.0% to 6.0%, Na2O:
• 3.0% to 5.0%, La2O3:
• 14 ppm to 17 ppm, CeO2:
• 35 ppm to 40 ppm, Nd2O3:
• 9 ppm to 12 ppm, Sm2O3:
• 1 ppm to 3 ppm, Eu2O3:
• 0.3 ppm to 0.7 ppm, Gd2O3:
• 1 ppm to 3 ppm, Tb4O7:
• 0.1 ppm to 0.3 ppm, Ho2O3:
• 0.2 ppm to 0.3 ppm, Er2O3:
• 0.4 ppm to 0.7 ppm, Tm2O3:
• 0.05 ppm to 0.1 ppm, Yb2O3:
• 0.4 ppm to 0.7 ppm, Lu2O3:
• 0 ppm to 0.3 ppm, Y2O3:
• 6 ppm to 9 ppm;
• and loss on ignition:
• 0.5% to 1.0%;
• a chemical composition of the antibacterial protective glaze includes, in percentage by mass:
• SiO2:
• 40% to 50%;
• Al2O3:
• 16% to 20%;
• Fe2O3:
• 0.21% to 0.31%;
• TiO2:
• 0.21% to 0.31%;
• CaO:
• 1.5% to 3.0%;
• MgO:
• 3.0% to 5.0%;
• BaO:
• 11 to 15%;
• ZnO:
• 3% to 5%;
• K2O:
• 2.0% to 3.0%;
• Na2O:
• 1.3% to 2.3%;
• La2O3:
• 4 ppm to 9 ppm;
• CeO2:
• 9 ppm to 20 ppm;
• Nd2O3:
• 2 ppm to 6 ppm;
• Sm2O3:
• 0.03 ppm to 1.5 ppm;
• Eu2O3:
• 0.09 ppm to 0.35 ppm;
• Gd2O3:
• 0.3 ppm to 1.5 ppm;
• Tb4O7:
• 0.03 ppm to 0.15 ppm;
• Ho2O3:
• 0.06 ppm to 0.15 ppm;
• Er2O3:
• 0.12 ppm to 0.35 ppm;
• Tm2O3:
• 0.01 ppm to 0.05 ppm;
• Yb2O3:
• 0.12 ppm to 0.35 ppm;
• Lu2O3:
• 0 ppm to 0.15 ppm;
• Y2O3:
• 1.8 ppm to 4.5 ppm;
• and loss on ignition:
• 8% to 10%, and
• antibacterial rates of Escherichia coli and Staphylococcus aureus of the antibacterial ceramic tile are both greater than 90%.