Coal-to-liquid feedstock
This article examines coal as a feedstock for coal-to-liquid (CTL) processes: its geology, global occurrence, mining and supply, economic importance, statistics, industrial uses, environmental challenges and technological trends. Coal remains…
Low-mercury coal
This article examines the topic of low-mercury coal from geological occurrence to mining regions, market dynamics, industrial uses and environmental implications. Low-mercury coal has become an important commodity as regulators,…
High-volatile A coal
This article examines the properties, distribution, extraction, economic role and industrial uses of high-volatile A bituminous coal. It explains what distinguishes this rank from other coals, where significant deposits are…
De-ashed coal
De-ashed coal is a processed form of coal from which mineral matter (ash) and many inorganic impurities have been substantially reduced or removed. Through a variety of physical and chemical…
High-carbon coal
High-carbon coal, a term that commonly refers to coal ranks with a high proportion of fixed carbon such as anthracite and certain grades of bituminous coal, remains an important component…
Carbon-rich hard coal
This article examines the geological nature, distribution, extraction, economic importance and industrial uses of high-carbon hard coal — a group of coals valued for their high fixed carbon content and…
Low-rank coal
Low-rank coals — commonly referred to as lignite and sub-bituminous coals — occupy an important but often misunderstood position in the global energy mix. Characterized by high moisture content, relatively…
Ovoid coal
Ovoid coal is a term that can refer both to a particular morphological form of coal lumps and to the broader category of coal as a vital geological and industrial…
Coal slurry
Coal slurry is an often-overlooked but highly consequential component of the coal industry: a mixture of fine coal particles, water and mineral matter produced during coal washing, handling and combustion…
Sized coal
This article examines sized coal — coal that has been crushed, screened and graded into defined particle ranges for specific industrial uses. Sized coal plays a crucial role in power…
