• December 12, 2025
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…

  • December 8, 2025
Long-flame coal

Long-flame coal is a historically important and still widely used category of coal characterized by its distinctive burning behavior, broad occurrence in many coal basins, and versatile industrial applications. This…

  • December 7, 2025
House coal

House coal — commonly sold as lumps of coal intended for domestic heating and small-scale use — remains an important yet controversial energy commodity in many parts of the world.…

  • December 6, 2025
Dry steam coal

This article explores the characteristics, occurrence, economic importance and industrial role of dry steam coal — a variety of coal primarily used for heat and power generation. Dry steam coal…

  • 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…

  • November 29, 2025
Medium-volatile bituminous coal

Medium-volatile bituminous coal is a widely used and geologically important type of hard coal that sits in the mid-range of the coal rank scale. It combines relatively high fixed carbon…

  • November 29, 2025
High-volatile bituminous coal

High-volatile bituminous coal occupies an important place among the ranks of coal used around the world. This article summarizes its geological characteristics, where it occurs and is mined, economic and…

  • November 28, 2025
Bituminous coal

Bituminous coal is one of the most important and widely used ranks of coal worldwide. It occupies an intermediate position in the coalification scale between sub-bituminous coal and anthracite, combining…

  • January 8, 2025
Bituminous Coal: Characteristics and Industrial Applications

Bituminous coal, often referred to as “soft coal,” is a type of coal that is widely used for various industrial applications due to its favorable characteristics. This article delves into…

  • September 10, 2024
The Role of Lignite in Local Power Generation

Lignite, often referred to as brown coal, plays a significant role in local power generation. This article delves into the importance of lignite, its extraction, and its impact on the…