Investigating the Mineralogical Composition of Flying Ash Pulps from the Aspect of Waste Quality

Abstract

Nowadays coal-based power plants have still a 25% share in energy production in Hungary. Consequently, professional treatment of the yearly accumulating large volumes of ash/flying ash is an important task from environmental, as well as national economic aspects. Since power plants have gradually switched during the recent years to hybrid-fluid technology, substantial part of sulphur accumulates in fine ash/flying ash. It is important to know in which form the sulphur component becomes absorbed in the flying ash-water pulp of approximately 1:1 mixing ratio. This study presents the thematic as well as temporal evolution of the detailed determination of mineralogical composition.