摘要
以泥灰岩为原料,研究煅烧温度、保温时间、消化用水量对制备天然水硬性石灰的影响。采用X射线衍射仪、X射线荧光光谱仪、TG-DSC对泥灰岩粉体、煅烧中间产物和消化样品进行了表征。实验室制备的天然水硬性石灰主要有C_2S与Ca(OH)_2组成。此外,利用激光粒度分析仪分析粒度、白度仪分析样品白度,与商用NHL2近似,通过对产品进行抗压和抗折强度测试,其达到欧洲标准BS.EN 459-2015中NHL2的要求。
The effect of sintering temperature,dwelling time,and water demand of slaking on the preparation of natural hydraulic lime from marlstone as the raw material was studied.The raw material and natural hydraulic lime were characterized by X-ray diffractometer,X-ray fluorescence spectrometer,and TG-DSC.Lab-made natural hydraulic lime is composed of C2S and Ca(OH)2.In addition,the particle size distribution,whiteness of the final products were analyzed using a laser particle size analyzer and whiteness meter and it is similar to commercial NHL2.The compressive and flexural strength of the product meet the requirement of NHL2 in Euro standard BS.EN 459-2015.
作者
王琳琳
刘泽
王栋民
姜启衎
张川
WANG Lin-lin;LIU Ze;WANG Dong-min;JIANG Qi-kan;ZHANG Chuan(School of Chemical and Environmental Engineering,China University of Mining&Technology(Beijing),Beijing 100083,China)
出处
《硅酸盐通报》
CAS
北大核心
2019年第3期853-857,共5页
Bulletin of the Chinese Ceramic Society
基金
国家重点研发计划(2017YFC0505904)
关键词
泥灰岩
天然水硬性石灰
煅烧
消化
强度
marlite
natural hydraulic lime
sintering
slaking
strength
