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…
Foundry coke coal
Foundry coke coal is a specialized form of **metallurgical coal** that, after carbonization, yields a solid carbon product used predominantly in metal foundries and certain smelting applications. This article examines…
Blast-furnace coal
Blast-furnace coal, commonly known in industry as metallurgical or coking coal, is a specialized category of coal essential for modern steelmaking. Unlike thermal coal burned for power generation, this coal…
Coke oven coal
This article explores the coal used specifically for coking and in coke ovens — the type of coal central to modern **steel**making and a range of industrial processes. It covers…
Coke breeze
This article explores the material commonly referred to as coke breeze — a fine particulate by-product of coke production closely tied to the metallurgy of coal and the global steel…
Chemical-grade coal
This article examines the specialised category commonly called chemical-grade coal — varieties of coal selected or processed for use as a raw material in chemical, metallurgical and high-value industrial applications.…
Syngas coal feedstock
This article examines the use of coal as a feedstock for producing syngas — a mixture of primarily carbon monoxide and hydrogen — addressing its geological occurrence, extraction regions, industrial…
Gasification coal
This article explores the role of coal tailored for gasification — the conversion of coal into a combustible or chemical-rich gas (syngas) used for power, fuels and chemicals. Gasification coal…
Hydrothermal carbonized coal
Hydrothermal carbonized coal (often referred to as hydrochar when produced from biomass, or as hydrothermally upgraded coal when applied to low-rank coals) is a product of a wet, moderate-temperature thermochemical…
Torrefied coal
This article describes the nature, production, distribution and significance of torrefied coal — an upgraded solid fuel produced by thermal treatment — and explains where feedstocks and conventional coal occur,…
