Reconstituted coal
Reconstituted coal is a manufactured solid fuel produced by agglomerating or otherwise processing coal particles and wastes into a uniform, transportable, and often higher-value product. It sits at the intersection…
Low-smoke briquettes
Low-smoke briquettes made from coal represent a specialized segment of solid fuels developed to combine the high energy density of coal with significantly reduced visible smoke and fine particle emissions.…
High-density coal briquettes
High-density coal briquettes are a manufactured fuel product created by compressing fine coal, usually of higher-rank varieties, into compact, uniform blocks with enhanced mechanical strength and energy density. These products…
Brown coal briquettes
Brown coal briquettes — a form of compacted lignite — have played a significant role in regional energy systems, industrial processes and household heating for more than a century. This…
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…
Industrial-grade lignite
Industrial-grade lignite, often termed brown coal, is a distinctive type of coal that occupies an important but controversial position in the global energy and industrial landscape. Characterized by relatively low…
Metallurgical middlings
This article discusses the category known as metallurgical middlings — intermediate coal products generated in the preparation of metallurgical coal (also called coking coal). It explains what middlings are, where…
Thermal middlings
Thermal middlings are an often-overlooked but important fraction of coal that plays a practical role across mining, coal preparation and power-generation value chains. This article explains what thermal middlings are,…
Coal rejects
The phrase coal rejects refers to the material separated from mined coal during preparation and washing processes — the fraction considered unsuitable for direct sale or conventional combustion because of…
