subbituminous


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subbituminous

(ˌsʌbbɪˈtjuːmɪnəs)
adj
(Geological Science) (of coal) dark brown to black and intermediate in rank between lignite and bituminous
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
In this study, NaOCl was used to oxidize three kinds of Chinese coals, a lignite, a subbituminous coal, and an anthracite.
In this study, lignite (ZT) collected from Zhaotong in Yunnan, subbituminous coal (BLT) acquired from Bulianta in Inner Mongolia, and bituminous coal (XQ) from Xiqu in Shanxi, China, were served as the coal samples.
The high ash seems to be due to presence of these coal near margin of swamps and probably the paralic nature of these swamps give rise to high sulphur, according to calorific value the rank of these coal ranges for subbituminous B to medium volatile bituminous, highest rank in Pakistan coals.
The company produces subbituminous thermal coal with low sulfur content and an average heat value between 8,400 Btu and 9,350 Btu.
The plant will use subbituminous coal imported from Indonesia.
* Northern Alaska-Slope Coal Province (coal: bituminous, subbituminous)
Most guess it is anthracite, bituminous, and a few even get to subbituminous, but most forget lignite.
For this study, one sample of lignite, three subbituminous and one bituminous coal samples from the Czech Republic were selected.