Preburn versus postburn mineralogical and geochemical characteristics of overburden and coal at the Hanna, Wyoming underground coal gasification site
Abstract
Hundreds of mineralogic and geochemical tests were done under US Department of Energy contracts on core samples taken from the Hanna underground coal gasification site. These tests included x-ray diffraction studies of minerals in coal ash, overburden rocks, and heat-altered rocks; x-ray fluorescence analyses of oxides in coal ash and heat-altered rocks; semi-quantitative spectrographic analyses of elements in coal, overburden, and heat-altered rocks; chemical analyses of elements and compounds in coal, overburden, and heat-altered rocks and ASTM proximate and ultimate analyses of coal and heat-altered coal. These data sets were grouped, averaged, and analyzed to provide preburn and postburn mineralogic and geochemical characteristics of rock units at the site. Where possible, the changes in characteristics from the preburn to the postburn state are related to underground coal gasification processes. 11 references, 13 figures, 8 tables.
Related Papers
- → Research of the Backfill Body Compaction Ratio Based on Upward Backfill Safety Mining of the Close-Distance Coal Seam Group(2022)9 cited
- → Research on Mining Fracture of Overburden in Close Distance Multi-seam(2011)21 cited
- → Determination of caved and water-conducting fractured zones of “two soft and one hard” unstable coal seam(2020)13 cited
- → Mathematical modeling temperature's fields in overburden during underground coal gasification(2014)7 cited
- Analysis on Overburden Structure in the Mining of Deeply Inclined Coal Seam(2012)