Coal slurry
Coal slurry is an often-overlooked but highly consequential component of the coal industry: a mixture of fine coal particles, water and mineral matter produced during coal washing, handling and combustion…
Sized coal
This article examines sized coal — coal that has been crushed, screened and graded into defined particle ranges for specific industrial uses. Sized coal plays a crucial role in power…
Crushed coal
Crushed coal is a widely used form of fossil fuel obtained by mechanically reducing the size of mined coal to meet the requirements of various industrial processes. This article examines…
Heating coal
Heating coal plays a continuing and complex role in the modern energy system. This article explores the geological occurrence, mining and processing, global production and trade, economic importance, industrial uses,…
Gas coal
This article explores the nature, distribution, economic importance and industrial uses of gas coal — a form of coal with distinctive physical and chemical properties that make it valuable for…
E-grade coal
This article explores E-grade coal — a commercial classification commonly used to describe lower-rank thermal coals with specific physical and chemical characteristics. It covers where such coals are found and…
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…
Lean coal
This article explores the technical, economic and geopolitical dimensions of what is commonly referred to as “lean coal” — lower-energy, lower-volatile types of coal often used for power generation rather…
Peat coal
Peat, often called peat coal in some regional contexts, occupies a unique place between organic soil and true coal both geologically and economically. Formed over thousands of years from partially…
Brown coal
This article explores brown coal (commonly called lignite) in detail: its geological origins, where it is found and mined, its economic and industrial roles, statistical snapshots of production and consumption,…
