Lithium heat-resistant porcelain fired in reducing flame and preparation method thereof

The invention relates to lithium heat-resistant porcelain fired in reducing flame and a preparation method of the lithium heat-resistant porcelain. The heat-resistant porcelain body comprises the following materials in percentage by mass: 30-40wt% of spodumene, 3-6wt% of lithium aluminum silicate glass ceramics, 5-10wt% of cordierite, 1-5wt% of zirconite, 30-45wt% of kaolin and 3-15wt% of bentonite. The product (the lithium heat-resistant porcelain) is obtained by proportioning, ball milling, drying, glazing and firing in a reducing flame atmosphere. The expansion coefficient of the product is(2.3-2.7) x 10/DEG C, and the whiteness of the product is 70-75. The lithium heat-resistant porcelain is fired by adopting reducing flame, the traditional process of only firing by adopting oxidizing flame is broken through, and the obtained product is higher in whiteness and better in thermal expansion property, so that the lithium heat-resistant porcelain has a wide market prospect. 本发明涉及一种在还原焰中烧成的锂质耐热瓷及其制备方法，所述耐热瓷