• 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…

  • November 28, 2025
Steam coal

Steam coal, commonly referred to as thermal coal, is the coal type primarily used to produce heat and generate electricity. Unlike metallurgical coal used in steelmaking, steam coal is burned…

  • November 27, 2025
Thermal coal

Thermal coal, commonly known as steam coal, is one of the most important fossil fuels in modern energy systems. It is primarily used to generate electricity and as a heat…

  • November 27, 2025
PCI coal (Pulverized Coal Injection)

The following article examines pulverized coal injected into blast furnaces — commonly known as PCI (Pulverized Coal Injection) coal — covering its geological occurrence, mining regions, technical characteristics, economic and…

  • November 26, 2025
Semi-soft coking coal

Semi-soft coking coal occupies an important middle ground in the world of metallurgical coals. It is neither the highest-grade hard coking coal used to produce premium blast-furnace coke nor the…

  • November 25, 2025
Soft coking coal

Soft coking coal occupies a specific and important niche within the family of bituminous coals. It combines properties that make it partially suitable for metallurgical processes, particularly when blended with…

  • November 25, 2025
Hard coking coal

Hard coking coal is one of the most important raw materials in traditional iron- and steelmaking. Unlike thermal coal used mainly for power generation, this specialised grade of coal is…

  • November 24, 2025
Coking coal

Coking coal, also known as metallurgical coal, is a specialized type of coal used primarily for producing coke, the essential carbonaceous material in traditional iron and steelmaking. Unlike thermal coal…

  • November 24, 2025
Metallurgical coal

Metallurgical coal, commonly called coking coal in industry, is a critical raw material for traditional steelmaking and many heavy industries. Unlike thermal coal used mainly for power generation, metallurgical coal…

  • November 24, 2025
Semi-anthracite

Semi-anthracite is a distinct rank of coal that occupies a middle ground between high-grade anthracite and the more common bituminous coals. It combines many of the advantageous physical and chemical…