High-volatile B coal
High-volatile B coal occupies an important place in the global spectrum of fossil fuels. As a specific sub-rank within the broader category of bituminous coals, it combines distinct physical and…
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…
Super-low-volatile coal
Super-low-volatile coal is a specialized, high-rank form of coal valued primarily for its high fixed carbon content, low volatile matter, and strong performance in metallurgical and high-temperature industrial applications. This…
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…
Bituminous briquettes
Bituminous briquettes are a form of processed coal that combine the properties of natural bituminous coal with mechanical compaction and, often, added binders to create a solid, uniform fuel product.…
Run-of-mine coal (ROM coal)
Run-of-mine coal (commonly abbreviated as ROM coal) is the raw material produced directly from a mine before any processing, washing or blending. It represents the first form of coal as…
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G-grade coal
This article examines the properties, distribution, economic role and industrial significance of a category frequently referred to as G-grade coal. The term can have several meanings depending on national standards…
Fat coal
Fat coal — a traditional term used in many coal-producing countries — denotes a high-quality type of coal valued for its energy content and physical behavior during heating. Often associated…
Medium-volatile bituminous coal
Medium-volatile bituminous coal is a widely used and geologically important type of hard coal that sits in the mid-range of the coal rank scale. It combines relatively high fixed carbon…
