Zirconium white frit, white ground glaze, and preparation methods and application of zirconium white frit and white ground glaze

Abstract

The invention discloses a zirconium white frit, a white ground glaze and preparation methods and application of the zirconium white frit and the white ground glaze, belonging to the technical field of building materials. The zirconium white frit comprises the following components in percentage by weight: 12-20% of zircon sand, 1-4% of calcined alumina, 15-25% of quartz, 25-32% of potassium feldspar, 1-6% of calcite, 8-15% of dolomite, 1-7% of apatite, 10-15% of calcined zinc oxide and 3-10% of tin oxide. The zirconium white frit comprises the following chemical components in percentage by weight: 41 percent to 45 percent of SiO2, 4 percent to 6 percent of SnO2, 5 percent to 7 percent of Al2O3, 0.01 percent to 0.05 percent of Fe2O3, 0.01 percent to 0.05 percent of TiO2, 5.5 percent to 8 percent of CaO, 2.5 percent to 4 percent of MgO, 2 percent to 4 percent of K2O, 0.5 percent to 1.5 percent of Na2O, 9 percent to 14 percent of ZnO, 1 percent to 2 percent of P2O5, 9 percent to 12 percent of ZrO2 and 6 percent to 9 percent of IL. The whiteness of the zirconium white frit prepared according to the above formula can reach 85 degrees, and the white ground glaze prepared from the zirconium white frit also has good flatness and whiteness.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a zirconium white frit, a white underglaze and a preparation method and application thereof. Background technique [0002] For ceramic tiles with a white background color, the whiter the bottom glaze, the higher the product grade. For example, high-end marble tiles such as Carrara White and Snowflake White require a background color with a whiteness of more than 80. Adding zirconium silicate as an opacifying agent to the glaze can significantly increase the whiteness of the glaze, but the expansion coefficient of zirconium silicate is small, and it is easy to make the glaze surface uneven. The amount of zirconium silicate added to the bottom glaze of most marble tiles It is 15-20%, and the whiteness is generally around 65°. If the amount of zirconium silicate continues to increase, the increase in whiteness will not be obvious, and it will cause the flatness of the til...

AI Technical Summary

Problems solved by technology

Adding zirconium silicate as an opacifying agent to the glaze can significantly increase the whiteness of the glaze, but the expansion coefficient of zirconium silicate is small, and it is easy to make the glaze surface uneven. The amount of zirconium silicate added to the bottom glaze of most marble tiles It is 15-20%, and the whiteness is generally around 65°. Continue to increase the amount of zirconium silicate, and the increase in whiteness will not be obvious, and will cause the flatness of the tiles to fail to meet the standard, and will increase the cost; for performance effects or economic benefits , are in urgent need of improvement

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