Mineralogy and chemistry of conventional and fluidised bed coal ashes
| Authors | |
|---|---|
| Year of publication | 2002 |
| Type | Article in Periodical |
| Magazine / Source | Bulletin of the Czech Geological Survey |
| MU Faculty or unit | |
| Citation | |
| Field | Geology and mineralogy |
| Keywords | fly ash; conventional coal combstion; fluidized bed combustion; phase composition; trace element chemistry; hazardous elements; mode of occurrence |
| Description | Coal combustion residues represent very abundant inorganic waste materials. The change from conventional combustion of powdered North Bohemian brown coal to its combustion in fluidised bed boilers in several Czech power and heating plants calls for detailed mineralogical and geochemical characterisation of the combustion residues. The main differences between fly ashes from both combustion systems derive from different burning temperatures and differing systems of desulphurisation (coeval with combustion / post-combustion). Both these factors influence the chemical and phase composition as well as speciation of trace elements. The study further shows that the validity of the surface enrichment model (Linton et al. 1975) can be limited. |
| Related projects: |