Pottery bluish-white glaze and preparation method thereof

Abstract

The invention discloses a pottery bluish-white glaze and a preparation method thereof. The pottery bluish-white glaze is prepared from the following raw materials in parts by weight: 50-60 parts of melilite, 9-13 parts of calcite, 14-18 parts of quartz, 2.2-3 parts of tourmaline, 9-11 parts of iron ore, 2-4 parts of vermiculite, 1.2-1.8 parts of zinc oxide and 1.5-2.0 parts of tin oxide. The preparation method for the pottery bluish-white glaze comprises the following steps: (1) adding water into the raw materials, mixing and ball-milling, thereby acquiring glaze slip; (2) applying glaze; and (3) sintering under the sintering temperature of 1280-1310 DEG C. Through the scientific and reasonable raw material ratio and the control on the sintering technology, the color stability of the bluish-white glaze is promoted and the yield is increased from the original below 50% to above 85%. The tourmaline is added, so that the product can slowly release negative ions to the surrounding, the product has certain antibacterial and deodorizing functions and the product is endowed with certain biological activity.

Description

technical field [0001] The invention relates to a glaze material, in particular to a Jun porcelain bluish-white glaze. Background technique [0002] Jun Porcelain is one of the five famous kiln porcelains in Song Dynasty in my country. The reputation of "one piece of Jun porcelain" is a unique national treasure porcelain in Shenhou Town, Yuzhou City. The bluish-white glaze in Jun porcelain has a glaze color between green and white, and its color is jade-like and clear; the formation of glaze color has a lot to do with the raw material formula and firing process. Because the traditional firing of Jun porcelain bluish-white glaze uses natural ore as the main raw material, various problems are prone to occur during firing, such as shrinkage of the glaze surface, pinholes, dull glaze, etc., resulting in a yield of less than 50%. Some chemical raw materials can improve the above problems and increase the rate of finished products. However, the use of chemical raw materials has c...

AI Technical Summary

Problems solved by technology

Because the traditional firing of Jun porcelain bluish-white glaze uses natural ore as the main raw material, various problems are prone to occur during firing, such as shrinkage of the glaze surface, pinholes, dull glaze color, etc., resulting in a yield of less than 50%. Some chemical raw materials can improve the above problems and increase the rate of finished products. However, the use of chemical raw materials has caused new problems, such as endangering human health and polluting the environment.