Preparation and Characterization of Keramzite Spheres Using Sewage Sludge Produced by Waste Paper Recycling
CHEN Wei， FAN Chuan-gang， WANG Jian， PEI Li-zhai, LI Jia-mao,
School of Materials Science and Engineering, Anhui University of Technology School of Materials Science and Engineering, Anhui University of Technology School of Materials Science and Engineering, Anhui University of Technology School of Materials Science and Engineering, Anhui University of Technology
Abstract：Sewage sludge produced by waste paper recycling was used as principal raw material to sinter lightweight keramzite spheres with gangue sludge and fly ash in the batching. The produced keramzite samples were characterized in terms of their morphology and mechanical properties. It was found that apparent bloating took place at high temperature as the content of sewage sludge was more than 40%(w), at which the oxidation of organics released enough gas and heat to ensure the bloating effect during the sintering process. As a result, the resulting keramzite spheres with the higher strength but lower granule density was sintered at a lower temperature. As the green sample was composed of 50%(w) sewage sludge (in dry state), 30%(w) fly ash, and 20%(w) gangue sludge, the keramzite spheres sintered at 1140℃ had the desirable properties of the granule density at 0.75 g/cm3, the weight loss in hydrochloric acid at 0.54%, and the cylindrical compress strength at 6.32 MPa.
陈伟 樊传刚 王健 裴立宅 李家茂. 废纸造纸污泥陶粒的制备与性能表征[J]. , 2010, 10(5): 1015-1019.
CHEN Wei; FAN Chuan-gang; WANG Jian; PEI Li-zhai; LI Jia-mao;. Preparation and Characterization of Keramzite Spheres Using Sewage Sludge Produced by Waste Paper Recycling. , 2010, 10(5): 1015-1019.
2010, Vol. 10 
