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污泥陶粒焙烧制度优化及其对陶粒性能的影响
作者：荣辉1，2，张鸿飞1，张磊1，3，张颖1，4，徐蕊1，宁彩珍1，王雪平1
（1.天津城建大学 材料科学与工程学院，天津 300384；
2.河海大学 水文水资源与水利工程科学国家重点实验室，江苏 南京 210098；
3.天津市建筑垃圾与燃煤废弃物利用技术工程中心，天津 300384；4.天津市土木建筑结构防护与加固重点实验室，天津 300384）
摘要：研究了污泥掺量对陶粒膨胀倍数的影响，对污泥陶粒的焙烧制度进行了初探与优化。研究结果表明：干污泥掺量（0~20%）越多，助熔成分增多，在相同烧结温度下熔化生成的液相就越多，陶粒更易收缩，膨胀倍数变小。添加污泥使得陶粒的焙烧范围变小，污泥掺量越多，焙烧范围越窄。对堆积密度影响程度较大的因素是烧结温度、预热时间，对陶粒1 h吸水率影响程度较大的因素是烧结温度、预热温度。
关键词：污泥陶粒；焙烧制度；陶粒性能
中图分类号：TU528.041 文献标识码：A 文章编号：1001-702X（2019）04-0068-05
Optimization of sludge ceramsite baking system and its effect on ceramsite performance
RONG Hui1，2，ZHANG Hongfei1，ZHANG Lei1，3，ZHANG Ying1，4，XU Rui1，NING Caizhen1，WANG Xueping1
（1.School of Materials Science and Engineering，Tianjin ChengJian University，Tianjin 300384，China；
2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering，Hohai University，Nanjing 210098，China；
3.Tianjin Construction Waste and Coal-fired Waste Utilization Technology Engineering Center，Tianjin 300384，China；
4.Tianjin Key Laboratory of Civil Structure Protection and Reinforcement，Tianjin 300384，China）
Abstract：The effect of sludge content on the expansion ratio of ceramsite was first studied，and then the baking system of sludge ceramsite was preliminarily explored and optimized. The results indicate that：with the increase of the amount of sludge，the supporting component increased and the amount of liquid phase melted at the same temperature increased. With the increase of the amount of sludge，the expansion ratio of ceramsite gradually decreases. The baking range of sludge ceramsite narrow down under adding sludge reduces. It was found that the factors influencing the bulk density were sintering temperature and preheating time. The factors that had a greater influence on the 1 h water absorption of ceramics were sintering temperature and preheating temperature.
Key words：sludge ceramsite，baking system，ceramsite performance