high-rank coal

high-rank coal

[′hī ‚raŋk ′kōl]
(geology)
Coal consisting of less than 4% moisture when air-dried, or more than 84% carbon.
References in periodicals archive ?
announces that it will start a large-scale demonstration project in Indonesia to upgrade brown coal into high-rank coal, which can be used for power generation.
It has been suggested that higher rank coals with a higher electrostatic charge on breakage may contribute to the increased incidence of CWP in the high-rank coal regions (Page and Organiscak 2000).
The site near Sutton has proven recoverable reserves of high-rank coal totaling 15 million tons.
Whaling ships in the late 1800s and the early 1990s used coal mined from the Corwin Bluffs and Cape Beaufort areas along the coast of the Chukchi Sea, according to the State-produced Alaska's High-Rank Coals publication.
The author stated the need for, "extending the development regime to very high-rank coals such as anthracites previously not considered suitable for coalbed methane production; devising cheaper and more efficient stimulation techniques than hydrofracturing.