Refined coal
This article explores the concept of refined coal — what it is, how it differs from raw coal, where it is found and produced, and its economic, industrial and environmental…
De-watered coal
De-watered coal is not a distinct geological variety but a processed form of coal with significantly reduced water content. It plays a growing role wherever low-rank coals (high moisture, low…
De-ashed coal
De-ashed coal is a processed form of coal from which mineral matter (ash) and many inorganic impurities have been substantially reduced or removed. Through a variety of physical and chemical…
Premium thermal blend coal
Premium thermal blend coal is a specially selected and mixed grade of coal designed to meet the operational and economic needs of modern power plants and large industrial boilers. It…
Specialty metallurgical blend coal
Specialty metallurgical blend coal occupies a distinct and strategically important place in the global energy‑metals chain. Unlike steam coal used predominantly for power generation, metallurgical (or coking) coal is selected…
High-carbon coal
High-carbon coal, a term that commonly refers to coal ranks with a high proportion of fixed carbon such as anthracite and certain grades of bituminous coal, remains an important component…
Low-BTU coal
This article examines the characteristics, occurrences, extraction, economic roles and industrial importance of low-calorific-value coal—commonly referred to as low-BTU coal. It presents geological and geographical contexts, outlines the technological and…
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…
Ultra-cleaned thermal coal
The term ultra-cleaned thermal coal refers to thermally graded coal that has undergone intensive beneficiation and cleaning processes to remove ash, sulfur, moisture and other impurities, producing a fuel with…
Steam-turbine coal
This article examines steam (thermal) coal — the grade of coal primarily used to produce steam for electricity generation in steam turbines. It covers what this coal is, where it…
