Black raw glaze special for Nixing ceramics

Abstract

The invention discloses a black raw glaze special for Nixing ceramics. Calcium borate, zinc oxide, chrome oxide, cobalt oxide, quartz, feldspar, limestone, Vero soil and Nixing pottery clay are mixed up, fed with water, subjected to ball-milling, sieved and aged to prepare the raw glaze. The raw glaze is black after the firing process and can be strongly adhered to Nixing green-ware bodies. Meanwhile, the black raw glaze is very low in lead compound content and cadmium compound content. When the black raw glaze is applied to the production process, the polishing and waxing operation is saved. Meanwhile, the labor intensity is reduced. Therefore, the ceramic characteristics of the Nixing ceramics are reserved, while the decorative color effect of the glaze is realized at the same time.

Description

technical field [0001] The invention relates to a ceramic glaze, in particular to a glaze of Nixing pottery. Background technique [0002] Nixing pottery belongs to fine pottery with high iron content, and the color of its body is generally iron red. The iron element in the body of this kind of pottery itself is already a colorant, and its inherent color has a strong influence on other colorants. Colorants are not easy to cover. [0003] Among the existing porcelain glazes, the glazes suitable for the firing temperature of pottery are generally low-temperature frit glazes. Due to the low firing temperature, most of the frits used contain some toxic compounds, such as lead compounds and cadmium compounds. etc. Although the toxins of these compounds are controlled to a certain extent after being made into frits, the precipitation of harmful substances is inevitable, and the use of them on Nixing pottery is contrary to the product concept of Nixing pottery's health and environ...

AI Technical Summary

Problems solved by technology

[0003] Among the existing porcelain glazes, the glazes suitable for the firing temperature of pottery are generally low-temperature frit glazes. Due to the low firing temperature, most of the frits used contain some toxic compounds, such as lead compounds and cadmium compounds. etc. Although the toxins of these compounds are controlled to a certain extent after being made into frits, the precipitation of harmful substances is inevitable, and the use of them on Nixing pottery is contrary to the product concept of Nixing pottery's health and environmental protection; partial frit coverage It is not strong enough to completely cover the inherent iron red color of Nixing pottery with high iron content, so the current glaze colors are poor in color rendering, such as blue series, green series, etc.

Moreover, the glaze layer of this kind of glaze is relatively thick, and the glaze layer is bright and smooth, which covers the unique surface effect of pottery and cannot highlight the beauty of pottery texture.

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