Nano phase separation self-cleaning glaze of ceramic exterior wall brick

Abstract

The invention relates to a ceramic glaze, in particular to a nano phase separating self-cleaning glaze of ceramic out-wall bricks. The material composition (wt percent) is as follows: 26 to 32 percent of glaze quartz, 0 to 3 percent of glaze feldspars, 3 to 4 percent of Suzhou clays, 30 to 46 percent of high titanium blast furnace slag and 20 to 38 percent of FT818 frits; the chemical composition (wt percent) is as follows: SiO2: 54.22 to 63.16 percent, Al2O3: 8.22 to 11.18 percent, Fe2O3: 0.24 to 0.36 percent, TiO2: 3.16 to 4.69 percent, CaO: 10.11 to 13.24 percent, MgO: 4.28 to 5.90 percent, ZnO: 3.30 to 5.61 percent, BaO: 0.20 to 0.40 percent, K2O: 1.41 to 2.35 percent, Na2O: 0.52 to 0.97 percent, Li2O: 0.20 to 0.39 percent, B2O3: 0.45 to 1.76 percent , and ZrO2: 0.41 to 1.72 percent. After the glaze of is fired, nanometer protuberances and nanometer TiO2 clusters form on the surface of glaze, and the ceramic glaze is good in super-hydrophilic property, high in photocatalysis efficiency, good in anti-soil effect of the glaze surface and has self-cleaning function; and especially the high titanium blast furnace slag is taken as the main material, thus realizing waste utilization and decreasing costs.

Description

Technical field: [0001] The invention relates to a ceramic glaze, in particular to a nano-phase-separated self-cleaning glaze for ceramic exterior wall tiles. Background technique: [0002] Ceramic exterior wall tiles are the main materials for exterior decoration of buildings. Cleaning the walls during long-term use is a major problem, especially for high-rise buildings. At present, the self-cleaning of the glaze requires the addition of expensive silver antibacterial agents or photocatalysts. The self-cleaning effect is not very satisfactory, and it is difficult to be accepted by the market in terms of price. [0003] TiO in slag after blast furnace smelting 2 The content is between 18-30%. Using high-titanium blast furnace slag as cement clinker and concrete aggregate is the main application way at present, but it has not played the role of titanium resources. However, there is no literature report on the technology of using high-titanium waste slag to prepare glazed su...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of expensive self-cleaning glaze, poor self-cleaning effect, and high-titanium waste slag in the existing ceramic exterior wall tiles, and provides a method that uses high-titanium waste slag as the main raw material without changing the exterior wall tiles. The preparation process can make the exterior wall tiles have a remarkable self-cleaning effect and a low-cost ceramic exterior wall tile with nano-phase-separated self-cleaning glaze