High-whiteness under-glaze colorful low-temperature ceramic and preparation method thereof

高白度釉下多彩低温陶瓷及制备方法

Abstract

高白度釉下多彩低温陶瓷的坯料配方质量百分比组成:白云石31、高岭土7、长石8、黑粘土16、绢云母石18、石英10、氧化钴5、氧化镁5;釉料配方质量百分比组成:长石39、锂辉石6、石灰石10、SrCO310、石英21、高岭土5、滑石6、BaCO33;本发明制备的高白度瓷的白度和铅镉溶出量均达到国际先进水平,热稳定性和高白度瓷一样可达180℃-20℃热交换不裂,降低烧成温度320℃左右,可节约大量的燃油,且釉下画面色彩鲜艳、逼真,大幅度提高了产品档次;且采用氧化气氛烧制高白度陶瓷,不但白度高,而且可提高成品率20%以上,可实现产业化生产。
A formula of a preform body of high-whiteness under-glaze colorful low-temperature ceramic comprises following components by weight: 31 of dolomite, 7 of kaolin, 8 of feldspar, 16 of smolmitza, 18 of sericite, 10 of quartz, 5 of cobalt oxide and 5 of magnesium oxide. A formula of a glaze comprises following components by weight: 39 of feldspar, 6 of spodumene, 10 of limestone, 10 of SrCO3, 21 of quartz, 5 of kaolin, 6 of talcum and 3 of BaCO3. The whiteness and the lead and cadmium dissolving-out amounts of the high-whiteness ceramic reach international advanced levels. Heat stability can reach a degree that no cracking is generated after heat exchange at 180-20 DEG C. The sintering temperature is reduced by 320 DEG C, thus saving a large amount of fuel oil. Under-glaze pictures are bright in color and are vivid, thus improving largely the product grade. The high-whiteness ceramic is sintered by utilization of an oxidizing atmosphere, and therefore the whiteness is high, the rate of finished products is increased by 20%, and industrial production can be achieved.

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