建筑废渣灰、污泥和铸造旧砂再生粉尘制备高强轻集料的研究  

High-Strength Lightweight Aggregate Made from Waste Residue of Construction,Sludge,Dust in Reclamation of Used Foundry Sand

作　　者：尚江涛[1,2] 李如燕[1] 孙可伟[1] 何娟[1,2] 

机构地区：[1]昆明理工大学废弃物资源化国家工程研究中心,云南昆明650093 [2]昆明理工大学环境科学与工程学院,云南昆明650093

出　　处：《铸造》2011年第8期802-806,共5页Foundry

基　　金：财政部项目(多种废弃物制备复合材料;财建[2007]475号);昆明理工大学分析测试基金(2010162)

摘　　要：以建筑废渣灰、铸造旧砂再生粉尘和污泥为主要原料制备轻集料,研究了成形压力、预热温度、预热时间、焙烧温度和焙烧时间对轻集料性能的影响。研究结果显示:焙烧温度为1 140℃,焙烧时间为20 min是制备轻集料的最佳工艺条件。The waste residue of construction, sludge, and dust from reclamation of used foundry sand were used as the principal raw materials to fabricate the lightweight aggregate. The effects of forming pressure, preheating temperature and time, sintering temperature and time, etc. on the properties of lightweight aggregate were investigated. The results show that the optimum conditions for sintering high-strength lightweight aggregate are sintedng temperature of 1 140 ℃ and sintering time of 20 min.

关 键 词：建筑废渣灰 铸造旧砂再生粉尘 污泥 轻集料 

分 类 号：TG221[金属学及工艺—铸造]