Coal dust
The following article explores the subject of coal and coal dust from geological occurrence to industrial applications, economic significance, and health and environmental implications. Coal remains one of the world’s…
Durain coal
This article examines Durain coal, a regional coal type with distinct geological, economic and industrial attributes. It explores where Durain coal is found and mined, its chemical and physical characteristics,…
Coal with high liptinite content
This article examines coals that are unusually rich in liptinite macerals — a group of organic constituents in coal that derive from spores, cuticles, resins and algal materials. Such coals…
Low-plasticity coal
This article explores the characteristics, geological occurrence, economic significance and industrial uses of low-plasticity coal. Low-plasticity coal is a distinct category in coal petrography and technological classification: it does not…
High-swelling coal
High-swelling coal — often referred to in industry as coking or caking coal with a high swelling index — plays a central role in traditional steel production and in several…
Medium-fluidity coking coal
This article examines medium-fluidity coking coal: its defining characteristics, geological occurrence, major producing regions, processing and quality parameters, economic role, industrial importance—especially in steelmaking—and contemporary trends affecting its market and…
High-fluidity coking coal
High-fluidity coking coal is a specialized form of **coking coal** prized for its exceptional plasticity and ability to form a strong, porous **coke** during carbonization. It plays a critical role…
Deep-cleaned coal
Deep-cleaned coal is an engineered product of coal preparation and upgrading processes designed to remove impurities and improve fuel properties. Over the past decades, advancements in coal washing, beneficiation and…
Synthetic coal
This article examines the phenomenon commonly referred to as synthetic coal alongside conventional coal. It covers geological occurrence, extraction methods, economic and statistical context, industrial uses, environmental consequences, and emerging…
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…
