• June 29, 2026
Plastic coal

This article explores the phenomenon commonly called “plastic coal” — coal that exhibits a distinctive plasticity or caking behavior when heated — and the many technical, economic and environmental aspects…

  • June 28, 2026
Non-caking coal

Non-caking coal is a broad category of coals that do not soften, plasticize or fuse into a coherent, porous mass (coke) when heated in the absence of air. It is…

  • June 26, 2026
Low-caking coal

Low-caking coal is a specific category of coal defined by its limited tendency to soften, swell and fuse when heated in the absence of air. Unlike coking or strongly caking…

  • June 25, 2026
High-caking coal

High-caking coal is a specialized group of bituminous coals whose behaviour under heat makes them indispensable to the production of metallurgical coke and, by extension, modern steelmaking. This article explains…

  • December 5, 2025
Fat coal

Fat coal — a traditional term used in many coal-producing countries — denotes a high-quality type of coal valued for its energy content and physical behavior during heating. Often associated…