Potential use of lignite fly ahs for the control of acid generation from sulphidic wastes

摘要

In the present paper, the potential use of lignite fly ahs in the control of acid generation form sulphidic tailings disposed of at Lavrion, Greece was studied. Long-term laboratory column kinetic tests were performed on tailings containing 27/100 S, which were Homogeneously mixed with various amounts of fly ahs, ranging from 10 to 63/100 w/w. The drainage quality of the columns was Monitored over a test period of 600 days. Chemical and mineralogical characterisation of column solid residues was performed after A 270-day test period.