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

摘要

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 sintering temperature of 1 140 ℃ and sintering time of 20 min.%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1140℃,焙烧时间为20 min是制备轻集料的最佳工艺条件.