Abstract:Based on the municipal sewage sludge and quartz tailing,added appropriate additives such as river sediment and mine flotation desulfurization sludge,the lightweight ceramsite could be prepared for the build materials.The ratio of raw material is m (quartz tailing)∶m (sewage)∶m (adhesive)∶m (river sediment)=4∶4∶3∶3,and feed temperature is 400℃ and preheating time is 20 min and heating time is 25 min and sintering temperature is 1 100℃,respectively.The strength of ceramsite is 5.1 1 MPa,and the water absorption rate is 1 1.7,,and the density is 913 kg/m3 .