高滑石粘土用量的瓷质外墙砖研制

STUDIES ON PORCELAIN EXTERIOR-WALL-TILE USING TALC-CLAY

通过在高岭土—石英—钠钾长石的配料中引入１０％ ｗｔ 以上的滑石粘土，使配方组成趋于Ｒ２Ｏ－ Ａｌ２Ｏ３ － ＳｉＯ２－ ＭｇＯ系统。这种组成的坯体在１１７０℃、４５ｍｉｎ 下烧成的砖吸水率低（０．２２％ ），抗弯曲强度高（６８ ．３８ＭＰａ），各项性能指标均符合国家建材行业标准ＪＣ／Ｔ６６３－ １９９７《瓷质砖》

Tale-clay is rich in Jiangxi province.This paper is describad that produce porcelain exterior-wall-tile using Kaoline guartz Na-k feldspar and talc-clay and talc-clay is more that 10%wt in formula of the bodies.The chemical composition is based on R 2O-SiO 2-Al 2O 3-MgO system Under the firing temperature was 1170℃ and firing period was 45min,the wall-tile's water absorption is 0.22%,Flexural strength is 68.38MPa.It's porperties accorded with the standard JC/T665-1997 《porcelain-tile》.