Soft brown coal
Soft brown coal, commonly known as lignite, is a low-rank type of coal that plays a distinct role in the global energy mix and regional economies. Characterized by high moisture…
High-swelling coal
High-swelling coal — often referred to in industry as coking or caking coal with a high swelling index — plays a central role in traditional steel production and in several…
High-volatile C coal
High-volatile C coal is a specific rank within the bituminous coal classification that plays a significant role in global energy systems, industrial processes and regional economies. This article provides a…
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…
What Makes Thermal Coal Different from Coking Coal
The role of energy sources like coal remains a subject of intense debate and analysis. As one of the oldest and most abundant fossil fuels, coal has powered industries, shaped…
High-BTU coal
High-BTU coal is a category of fossil fuel prized for its high energy content per unit mass and strong industrial applications. In many energy and metallurgical markets, this coal commands…
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.…
Hard steam coal
Hard steam coal is a widely used category of solid fossil fuel, valued for its relatively high energy content and versatility across power generation and industrial processes. This article examines…
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…
Lignite
This article explores lignite — the lowest-rank form of coal often called “brown coal” — examining its geological origins, physical and chemical properties, where it occurs and is mined, its…
