Comparative chemical and mineral characterization of some Bulgarian coals |
| |
| Affiliation: | 1. Department of Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany;2. DKTK Munich site, Germany;3. SFB 1321, Germany;4. Human Biology, Technical University of Munich, Freising, Germany;5. Department of Surgery, Koc University School of Medicine, Istanbul, Turkey;6. Department of Surgery, University of Erlangen, Erlangen, Germany;7. Department of Internal Medicine II, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany;8. Institute for Molecular Immunology and Experimental Oncology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.;1. Faculty of Energy, University Politehnica of Bucharest, Splaiul Independenței, 060042 Bucharest, Romania;2. Academy of Romanian Scientists, Ilfov, 3, 050044 Bucharest, Romania;3. SINTEF Materials and Chemistry, Sem Saelands vei 2A, 7465, Trondheim, Norway |
| |
| Abstract: | The mineralogy and chemical composition of lignitic, subbituminous and bituminous coal and coal-ash samples from six Bulgarian deposits, namely Maritza West (MW), Sofia (S), Maritza East (ME), Bobov Dol (BD), Pernik (P) and Balkan (B), were studied and a model for comparative characterization of their composition was done. Major minerals identified in the crystalline matter of Bulgarian coals are commonly quartz, kaolinite, illite, calcite, pyrite, plagioclase, K-feldspar and gypsum and occasionally dolomite, siderite, Fe oxyhydroxides and Fe sulphates. Some genetic features of the inorganic matter in coal and coal ash are described and compared. The coals studied show high detrital (P, B, BD, ME) or high authigenic (S, MW) mineral abundance with sulphide–sulphate (P, BD, ME, MW) or mixed carbonate and sulphide–sulphate (B, S) authigenic mineral tendencies. The high-temperature ashes of these coals belong to sialic (P), sialoferricalcic (B, BD), sialoferric (ME) or ferricalsialic (MW, S) chemical types. They have high (B, P, BD) or low (ME, MW, S) silicate mineral abundance with sulphate (B, P, ME, MW, S) or oxyhydroxide (BD) mineral tendencies. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
