煤矸石资源化制备莫来石陶瓷材料的研究  

Synthesis Investigation of Mullite Refractory by Recycling Waste Coal Gangue

作　　者：刘洋[1] 贺图升[1] 黎载波[1] 詹志钦 LIU Yang;ZHAN Zhi-qin;HE Tu-sheng;LI Zai-bo(School of Chemistry and Civil Engineering,Shaoguan University,Shaoguan,Guangdong 512005)

机构地区：[1]韶关学院化学与土木工程学院,韶关512005

出　　处：《佛山陶瓷》2022年第2期18-21,共4页Foshan Ceramics

基　　金：广东省教育厅特色创新人才项目(2019KTSCX163);韶关市科技计划项目(2019sn060,2019sn077,2019CS05308);韶关学院大学生创新创业训练计划项目(Sycxcy2020078)。

摘　　要：以预处理后的河南巩义煤矸石及高铝矾土作为原料,研究了不同的实验条件对制备莫来石陶瓷材料的影响。结果表明:随着温度的升高,莫来石生成量逐渐增加,1500℃时二次莫来石大量生成,莫来石化程度增大;改变高铝矾土的用量,随着高铝矾土掺量的降低,合成的莫来石呈现出先增加后减少的趋势,当配合料中Al;O;与SiO;等摩尔比时,刚玉相的衍射峰强度有所降低,莫来石化的程度最大,说明掺入适量的高铝矾土可实现了煤矸石的资源化利用。Pre-treated Henan Gongyi coal gangue and high alumina bauxite were used as raw materials to study the effect of preparing mullite refractories under different experimental conditions. The results show that the amount of mullite gradually increases with the increasing temperature, and a large amount of secondary mullite is generated at 1500℃. The amount of synthesized mullite shows a trend of first increasing and then decreasing with the decrease of high bauxite doping. When the molar ratio of Al2 O3 and Si O2 is equal in the compound, the diffraction peak intensity of corundum phase decreases, and the degree of mullitization is the largest, indicating that the recycling of waste coal gangue can be realized with the appropriate doping amount of high bauxite.

关 键 词：煤矸石 莫来石 资源化 合成温度 

分 类 号：TQ174.1[化学工程—陶瓷工业] TD849.5[化学工程—硅酸盐工业]