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…
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…
Fine steam coal
The following article examines fine steam coal — a category of thermal coal characterized by its small particle size and primary use in power generation. It covers geological occurrence, mining…
Gasification-grade bituminous coal
Gasification-grade bituminous coal is a specific class of coal valued for its suitability in conversion processes that produce synthesis gas (syngas) — a mixture primarily of carbon monoxide and hydrogen…
Low-mercury coal
This article examines the topic of low-mercury coal from geological occurrence to mining regions, market dynamics, industrial uses and environmental implications. Low-mercury coal has become an important commodity as regulators,…
