粉煤灰基耐火材料的制备及性能研究  

Study on properties of fly ash based refractories

作　　者：张倩 ZHANG Qian(Department of Civil Engineering,Changzhi Vocational and Technical College,Changzhi 046000,China)

机构地区：[1]长治职业技术学院土木工程系,山西长治046000

出　　处：《混凝土与水泥制品》2024年第7期116-119,共4页China Concrete and Cement Products

基　　金：国家自然科学基金项目(51808375);山西省应用基础研究面上自然基金项目(201901D111040);山西省教育科学“十三五”规划教育政策研究专项课题项目(ZC-20053)。

摘　　要：将粉煤灰、煤矸石、铝灰按一定比例制备了粉煤灰基耐火材料,研究了m_(粉煤灰)∶m_(煤矸石)∶m_(铝灰)和烧结温度(800、1000、1200℃)对粉煤灰基耐火材料力学性能和耐火性能的影响,并进行了微观形貌分析。结果表明:随着烧结温度的升高,试样的显气孔率、体积变化率减小,体积密度、耐压强度、抗折强度和耐火度增大;当m_(粉煤灰)∶m_(煤矸石)∶m_(铝灰)=7∶1∶2时,试样的力学性能和耐火性能均最好;适当提高烧结温度和增加铝灰掺量均有助于提高试样的微观结构密实度。Fly ash based refractories were prepared with a certain proportion of fly ash,coal gangue,and aluminium ash,and the effects of m_(fly ash)∶m_(coal gangue)∶m_(aluminum ash)and sintering temperatures(800,1000,1200℃)on the mechanical and refractory properties of fly ash based refractories were investigated.In addition,the microscopic morphology analysis was carried out.The results show that with the increase of sintering temperature,the apparent porosity and volume change rate of the specimen decrease,and the bulk density,compressive strength,flexural strength and refractoriness increase.When m_(fly ash)∶m_(coal gangue)∶m_(aluminum ash)is 7∶1∶2,the specimen has the best mechanical and refractory properties.Appropriately increasing the sintering temperature and increasing the dosage of aluminium ash can increase the microstructural compactness of specimens.

关 键 词：耐火材料 粉煤灰 煤矸石 铝灰 烧结温度 力学性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]