하수슬러지 소각재의 인공경량골재화를 위한 기초연구

Abstract

In this study, production of artificial lightweight aggregate using sewage sludge ash was investigated with a intention of recycling of sewage sludge ash. To do this Numerical analysis by using Rigid-Plastic Finite Element Method was applied in production process of artificial lightweight aggregate to minimize trial-and-error and to satisfy for compression strength. In order to find optimal parameter for production of artificial lightweight aggregate, extrusion and compression dies were constructed and characteristic of artificial lightweight aggregate by variable process factors were examined. Also Effects of binder on environment, compression strength and bake temperature of product were also estimated. As the results, it was estimated that manufacture method through compression forming was more superior than extrusion because the former could form as excellent compressive strength and characteristic. Characteristic of clay and various inorganic wastes as a binder was grasped by controls of mixing ratio or sintering temperature changes. Environmental effect and Utilization value as commercial product were also estimated In we production of artificial lightweight aggregate using sewage sludge ash, results of this research are useful to forecast various processing variables of forming characteristic and quality of product.