Soft steam coal
This article explores the characteristics, distribution, economic role and industrial importance of soft steam coal. Soft steam coal—commonly identified with certain grades of bituminous coal used primarily for thermal applications—remains…
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…
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…
D-grade coal
D-grade coal occupies a specific niche in the wider spectrum of coal types: it is typically a lower-ranked, commercially traded category of coal used mainly for thermal applications, industrial heating…
Blended coal
Blended coal refers to coal products created by combining different grades or types of coal to achieve specific technical and commercial specifications. Blending is a widespread practice in power generation,…
Washed coal
Washed coal is coal that has been processed to remove impurities such as rock, ash, sulfur, and other unwanted materials. Through mechanical and physical beneficiation methods, washed coal delivers higher…
Long-flame coal
Long-flame coal is a historically important and still widely used category of coal characterized by its distinctive burning behavior, broad occurrence in many coal basins, and versatile industrial applications. This…
House coal
House coal — commonly sold as lumps of coal intended for domestic heating and small-scale use — remains an important yet controversial energy commodity in many parts of the world.…
Dry steam coal
This article explores the characteristics, occurrence, economic importance and industrial role of dry steam coal — a variety of coal primarily used for heat and power generation. Dry steam coal…
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…
