Stoneware tile blank, preparation method thereof, and stoneware tile

The invention discloses a stoneware tile blank and a preparation method thereof. The stoneware tile blank is prepared from, by weight, 68 to 70 parts of SiO2, 18 to 19 parts of Al2O3, 0 to 1.2 parts of Fe2O3, 0 to 0.5 part of CaO, 1 to 1.2 parts of MgO, 2.4 to 2.8 parts of K2O and 1.4 to 1.8 parts of Na2O. Compared with an existing stoneware tile blank, the ceramic tile blank has the following advantages: K2O and Na2O are used as main solvents, and the contents of CaO and MgO in the existing stoneware tile blank formula are reduced, so the shrinkage rate of the stoneware tile blank shows goodlinear change along with the increase of the firing temperature and the reduction of the water absorption rate within a wide firing temperature range (1150-1220 DEG C), the size of a stoneware tile product is favorably controlled in actual production, and the problems of bulging and waisted parts are avoided. 本发明公开了一种炻质砖坯料及其制备方法。按重量份计，所述炻质砖坯料包括：SiO:68～70份、AlO:18～19份、FeO:0～1.2份、CaO:0～0.5份、MgO:1～1.2份、KO:2.4～2.8份、NaO：1.4～1.8