Microcrystal-reinforced transparent leadless fritted glaze and preparation method thereof

The invention discloses a microcrystal-reinforced transparent leadless fritted glaze and a preparation method thereof, belonging to the field of ceramic glaze processing. The microcrystal-reinforced transparent leadless fritted glaze, prepared by the invention, comprises the chemical components in percentage by weight: 45.0-55.0% of SiO2, 5.0-7.0% of Al2O3, 0.1-0.2% of Fe2O3, 2.0-11.0% of CaO, 1.0-1.5% of MgO, 2.0-4.0% of K2O, 0.5-2.0% of Na2O, 0-3.0% of Li2O, 7.0-9.0% of ZnO, 3.0-5.0% of BaO, 2.0-2.6% of SrO, 5.0-10.0% of B2O3, 3.0-6.0% of ZrO2, and 0-1.0% of La2O3. The lead element in the fritted glaze is replaced with a composite solvent of alkali metal, alkaline-earth metal and a small amount of rare earth elements, the lead release is zero, thus the damage of the lead element in high-grade household porcelains represented by fine-bone china to a human body is thoroughly eliminated; and the prepared product is good in glaze glossiness and thermal stability, and high in transparency.