利用叶蜡石矿渣制备低膨胀微晶玻璃的研究  

Study on the Preparation of Low Expansion Microcrystalline Glass Using Pyrophyllite Slag

作　　者：苏月斌 陈雄春 胡天 Su Yuebin;Chen Xiongchun;Hu Tian(Zhejiang Haoxiang Mining Co.,Ltd.,Lishui,Zhejiang 323904;School of Materials Science and Engineering,Zhejiang University,Hangzhou,Zhejiang 310058)

机构地区：[1]浙江皓翔矿业有限公司,浙江丽水323904 [2]浙江大学材料科学与工程学院,浙江杭州310058

出　　处：《非金属矿》2024年第3期87-90,共4页Non-Metallic Mines

摘　　要：为充分利用叶蜡石矿渣,以叶蜡石矿渣为主要原料,引入ZrO_(2)、TiO_(2)、LiF和P_(2)O_(5)4种晶核剂制得微晶玻璃,研究不同晶核剂和热处理条件对微晶玻璃析晶行为的影响。结果表明,4种晶核剂的析晶能力强弱为ZrO_(2)>TiO_(2)>LiF>P_(2)O_(5),但含F样品在自然光下呈透明。以F为晶核剂,热处理条件为675℃2 h@900℃2 h,制得具有三相β-石英固溶体(热膨胀系数-5.0×10^(-7)/℃)、K-石英固溶体(热膨胀系数为9.0×10^(-7)/℃)和具有残余玻璃相(正热膨胀系数)的微晶玻璃(总热膨胀系数为-1.4×10^(-7)/℃),与市场上的玻璃热膨胀系数相近或者更低。In order to fully utilize pyrophyllite slag,pyrophyllite slag was used as the main raw material to prepare glass-ceramics with ZrO_(2),TiO_(2),LiF and P_(2)O_(5)four nucleating agents.The effects of different nucleating agents and heat treatment conditions on crystallization behavior of glassceramics were studied.The results show that the crystallization capacity of the four nucleating agents is ZrO_(2)>TiO_(2)>LiF>P_(2)O_(5),but glass-ceramics containing F are transparent under natural light.With F as nucleating agent,the heat treatment condition is 675℃2 h@900℃2 h,glass-ceramics(total coefficient of thermal expansion-1.4×10^(-7)/℃)with three-phaseβ-quartz solid solution(coefficient of thermal expansion-5.0×10-7/℃),K-quartz solid solution(coefficient of thermal expansion 9.0×10^(-7)/℃)and residual glass phase(coefficient of positive thermal expansion)are prepared,which is similar to or lower than the glass thermal expansion coefficient on the market.

关 键 词：微晶玻璃 β-石英固溶体 K-石英固溶体 形核 晶核生长 

分 类 号：TQ171[化学工程—玻璃工业] X705[化学工程—硅酸盐工业]