Supercritical coal grade
This article examines the concept commonly referred to as supercritical coal grade and, more broadly, the relationship between coal quality and the technologies known as supercritical and ultra-supercritical power plants.…
Thermal PCI coal
Thermal PCI coal occupies a specific and growing niche at the intersection of the energy and steel industries. Often referred to simply as PCI coal (Pulverized Coal Injection coal), this…
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,…
Enriched coal
Enriched coal — a term often used to describe coal that has undergone physical and/or chemical processing to improve its quality — plays a complex role in the modern energy…
Cleaned coal
This article examines cleaned coal — both the material produced by beneficiation (washing and preparation) and the suite of technologies often marketed as “clean coal” aimed at reducing the environmental…
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…
High-moisture coal
High-moisture coal is a broad category of low-rank coals that contain a significantly higher share of water in their natural state than medium- and high-rank coals. These coals play an…
Low-moisture coal
Low-moisture coal occupies a particular niche in the global coal complex: it is valued for its higher energy density, better handling characteristics and improved performance in many industrial processes compared…
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…
Ultra-low-sulfur coal
Ultra-low-sulfur coal has become an increasingly important commodity in global energy and industrial markets. Characterized by very low sulfur content compared with conventional coals, this product meets stricter emissions requirements,…
