Method for preparing low temperature black glaze by utilizing iron-ore slag

Abstract

The invention provides a method for preparing low temperature black glaze by utilizing iron-ore slag. The method comprises the following steps of mixing 30-45% of low temperature frit, 25-40% of feldspar, 20-25% of quartz, 3-5% of calcite, 2-4% of talcum and 2-5% of calcium phosphate by mass percent uniformly to obtain mixed powder, adding sodium tripolyphosphate and carboxymethyl cellulose to the mixed powder and mixing the materials uniformly, fine-grinding the mixture until the grain size is 200-250 meshes, adding water to obtain glaze slurry, and adjusting the specific gravity of the glaze slurry to be 1.6-1.7g / cm<3>; applying the glaze slurry to a green body uniformly, and insulating the green body at 1080-1120 DEG C after natural drying, thus obtaining the low temperature black glaze. The method has the beneficial effects that the low temperature black glaze for ceramics is prepared by utilizing the cheap iron-ore slag, and expensive coloring oxides such as cobalt oxide and the like are not used as the raw materials, thus reducing the preparation cost of the glaze; the prepared glaze has high blackness, pure color and stable properties.

Description

technical field [0001] The invention belongs to the field of material science, and in particular relates to a method for preparing low-temperature black glaze by using iron slag. Background technique [0002] The color and light of black enamel can be judged, and it has the texture of lacquer. The method of using black glaze to decorate porcelain was very famous as far back as the Eastern Han Dynasty. These porcelains have a solemn, serious, simple and elegant style, and are deeply loved by people. As a precious variety of glaze, people have never stopped developing black glaze throughout the ages. During the Eastern Jin Dynasty, Deqing was able to produce pure black glaze. In the Song Dynasty, in order to cater to the fashion of "fighting tea", black-glazed porcelain has achieved unprecedented development, and the Jianzhan made by Jianyao is the most famous. [0003] In the production of modern domestic ceramics, the colorants in black glazes mostly use Co-Cr-Fe-Mn seri...

AI Technical Summary

Problems solved by technology

[0003] In the production of modern domestic ceramics, the colorants in black glazes mostly use Co-Cr-Fe-Mn series colorants. This colorant must be added to a suitable basic glaze to make black glazes. If the production process is not properly controlled, the color will Poor, the glaze surface is prone to defects and loses its due decorative effect, and because black glazes generally use expensive cobalt oxide as the main coloring raw material, the cost of this color material is also very high, which seriously restricts black glaze products production and use of

However, Cui Wenhao and others used iron tailings to prepare black glaze. Although the cost was saved, the firing temperature was relatively high (Cui Wenhao, Shi Qi. Using Chengchao iron tailings to prepare black glaze. China Ceramics, 2011, 47 (11) :61-64)

According to the data, no matter what kind of raw materials are used, the firing temperature of black glaze is generally around 1250-1280°C, which limits its application in wall and floor tiles, which are in increasing demand.

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