摘要
针对目前污泥建材资源化过程存在的添加比例低、耗费黏土、干化增加成本等问题,以污水厂污泥、河道淤泥和粉煤灰为原料,探索制备陶粒轻集料的配方和技术参数。试验结果表明,试验原料中污泥和淤泥比例达到80%以上有烧制陶粒的可行性,在原料比例适当的情况下,预热温度400℃,预热时间30min,烧制温度1225℃,保温时间1/5min,升温速率10/15℃/min,烧制的陶粒堆积密度能达到600级,筒压强度不小于0.8MPa,吸水率小于10%,符合工业废渣轻集料标准要求。
In order to solve the problems in the process of sludge recycling for building material,sewage sludge,flyash and river silt are used as raw materials to explore the formula and technology parameter for the preparation of ce?ramsite light aggregate.The test results show that there has the possibility of firing ceramsite when the proportion ofsludge and silt in the raw material is more than80%,if the proportion of raw material is appropriate,preheating tem?perature is400℃,preheating time is30min,firing temperature is1225℃,holding temperature is1/5min,heatingrate is10/15℃/min,the fired ceramic accumulation density can reach600,cylinder strength is more than0.8MPa,water absorption is less than10%,it is in line with the industrial waste light aggregate standards.
作者
刘爽
支家强
吴鹏
张鹏宇
陈佳宁
崔凤彬
张超
LIU Shuang;ZHI Jia-qiang;WU Peng;ZHANG Peng-yu;CHEN Jia-ning;CUI Feng-bin;ZHANG Chao
出处
《砖瓦》
2017年第7期18-24,共7页
Brick-tile
基金
住房城乡建设部2016年科学技术项目计划(项目编号:2016-K1-036)
天津市企业博士后创新项目择优资助
关键词
污水厂污泥
河道淤泥
陶粒
配方
烧结制度
sewage sludge, river silt, ceramsite, formula, firing system
