14 Facts About Anthracite

Anthracite, known as hard coal, and black coal, is a hard, compact variety of coal that has a submetallic luster.

Anthracite is categorised into standard grade, which is used mainly in power generation, and high grade and ultra high grade, the principal uses of which are in the metallurgy sector.

Anthracite derives from the Greek anthrakites, literally "coal-like".

Anthracite is similar in appearance to the mineraloid jet and is sometimes used as a jet imitation.

Anthracite is associated with strongly deformed sedimentary rocks that were subjected to higher pressures and temperatures just as bituminous coal is generally associated with less deformed or flat-lying sedimentary rocks.

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Anthracite has a history of use in blast furnaces for iron smelting; however, it lacked the pore space of metallurgical coke, which eventually replaced anthracite.

Anthracite was first experimentally burned as a residential heating fuel in the US on 11 February 1808, by Judge Jesse Fell in Wilkes-Barre, Pennsylvania, on an open grate in a fireplace.

Anthracite differs from wood in that it needs a draft from the bottom, and Judge Fell proved with his grate design that it was a viable heating fuel.

Anthracite usage was inhibited by the difficulty of igniting it.

Anthracite was an authorised fuel in terms of the United Kingdom's Clean Air Act 1993, meaning that it could be used within a designated Smoke Control Area such as the central London boroughs.

Anthracite is processed into different sizes by what is commonly referred to as a breaker.

Anthracite is classified into three grades, depending on its carbon content.

Anthracite is divided by size mainly into applications that need lumps – various industrial processes where it replaces metallurgical coke, and domestic fuel – and those that need fines, such as sintering and pelletising.

Groundhog Anthracite Deposit, located in British Columbia, Canada, is the largest previously undeveloped anthracite deposit in the world.