利用天然原料合成钙长石轻质耐火砖的研究  

A STUDY OF ANORTHITE LIGHT REFRACTORY BRICK′SSYNTHESIS BY USING NATURAL MINERALS

作　　者：倪文[1] 刘凤梅[1] 李翠伟 

机构地区：[1]北京科技大学

出　　处：《地质找矿论丛》1998年第2期1-9,共9页Contributions to Geology and Mineral Resources Research

摘　　要：研究了使用天然原料一次合成钙长石轻质耐火砖的可行性。实验表明，将煅烧煤矸石、蓝晶石、硅灰石、苏州土、纯铝酸钙水泥等原料一起混磨至粒径小于３２０目，用发泡法可以合成出体积密度小于４８０ｋｇ／ｍ３的钙长石轻质耐火砖。此种钙长石轻质耐火砖的最佳煅烧温度为１３００°Ｃ，最高使用温度为１２６０°Ｃ，常温耐压强度为１１５ＭＰａ，抗折强度为０９２ＭＰａ，８００°Ｃ的导热系数为０１７Ｗ／ｍｋ，１２３０°Ｃ×２４ｈ重烧线变化为０１２８％。The possibility of producing anorthite light refractory bricks by Using natural minerals has been studied.The experiment shows that coal gangues,kyanite,wollastonite,Suzhou clay and calcium aluminate cements can make good anorthite light bricks with a foaming method.The raw materials have to be milled to a grain size smaller than 320 meshs.The optimum temperature of sintering is 1,300°C.The classification temperature of this refractory brick is 1,260°C;its cold crushing strength is 1 15MPa,its modulus of rupture is 0 92MPa,its thermal conductivity at 800°C is 0 17W/m·k,and the liner change after a 1,230°C×24hour reheating is 0 128%.

关 键 词：天然原料 轻质耐火砖 泡沫法 钙长石 耐火砖 

分 类 号：TQ175.7[化学工程—硅酸盐工业]