Lignite briquettes
Lignite briquettes, a processed form of low-rank coal commonly called lignite or brown coal, play a distinctive role in regional energy systems and small-scale heating applications. This article explores where…
Power-grade lignite
This article examines brown coal (lignite), commonly referred to as power-grade lignite, describing its geological nature, global distribution, mining and processing methods, economic and industrial roles, environmental impacts and the…
Gasification-grade sub-bituminous coal
This article examines gasification-grade sub-bituminous coal: its geological characteristics, global distribution, mining and supply patterns, technical suitability for coal gasification and related processes, economic and market aspects, environmental considerations, and…
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…
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…
Low-rank coal
Low-rank coals — commonly referred to as lignite and sub-bituminous coals — occupy an important but often misunderstood position in the global energy mix. Characterized by high moisture content, relatively…
Carbon coal
The following article examines the geological nature, global distribution, economic importance, and environmental implications of coal — a sedimentary rock that has powered industry and societies for centuries. It covers…
Non-coking coal
Non-coking coal, often referred to as thermal or steam coal, is one of the most widely used fossil fuels in the world. Unlike coking coal, which is suitable for metallurgical…
High-sulfur coal
High-sulfur coal is a distinctive and consequential category of fossil fuel whose chemical makeup, geographic distribution and economic implications have shaped energy systems, industrial processes and environmental policy for more…
Sub-bituminous B
Sub-bituminous B coal is a low- to medium-rank thermal coal that plays an important role in contemporary energy systems, particularly for power generation. It sits between lignite and bituminous coal…
