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3 Ιαν 2022 · Thus, we will study the lignite coal (denoted Hambach, HA coal) and bituminous coal (denoted BA coal). The aromatic and aliphatic nature of a coal can be evaluated by solid NMR spectroscopy, which was applied to the two coals in this study: the (HA/BA) Aliphatic and (HA/BA) Aromatic ratios were found to be 1.52 and 0.65, respectively.
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15 Μαΐ 2016 · Mapping of coal quality using stochastic simulation and isometric logratio transformation with an application to a Texas lignite. International Journal of Coal Geology, 152, 80–93. View Abstract
24 Ιουν 2020 · The results show that DWT-PLS can achieve satisfactory detection performance for moisture analysis of bituminous coal and lignite coal (Yang et al. Citation 2014). In another study, an SVR model based on the online coal calorific value estimation method was performed.
We established a pulsed fluidized bed system to dry and concurrently separate fine lignite (−6 + 3 and −3 + 1 mm lignite). The kinetics and evaporation of lignite moisture were investigated in the pulsed air flow.
1 Μαΐ 2016 · Abstract. Measurements to determine coal quality as fuel include proximate analysis, ultimate analysis and calorific value. The latter is an attribute taking non-negative real values, so a...
15 Μαΐ 2016 · Measurements to determine coal quality as fuel include proximate analysis, ultimate analysis and calorific value. The latter is an attribute taking non-negative real values, so a simple transformation is sufficient for its spatial modeling applying geostatistics.
Lignite is found as near-surface and deep-basin deposits throughout the Texas Gulf Coastal Plain. Near-surface lignite occurs in two elongate bands stretching from the Rio Grande (Webb and Starr Counties) to the Red River (Bowie County) and Angelina River (Angelina County).
