Beneficial Use of Contaminated Dredged Material as Partial Feedstock Replacement in Conventional Portland Cement Manufacture

摘要

Reported in this paper are preliminary findings of a research project being carried out to develop a beneficial use management strategy for contaminated dredged materials. As dredged materials inherently contain valuable resources, namely, Al_2O_3, SiO_2, and Fe_2O_3, the premise of this work is to capitalize on these properties to manufacture portland cement, a construction material requiring considerable quantities of these three elements for its manufacture. Laboratory-scale investigations have been carried out to investigate the ability to incorporate dredged material as an alternative feedstock while maintaining product quality. Simultaneously, the fate of organic and inorganic contaminants present in the dredged material are being investigated to ensure a safe process and final product.