Anthracite coal is a type of coal that is known for its high carbon content, low volatile matter, and high energy density. It is a hard, black, shiny, and relatively pure coal that is classified as metamorphic rock. Anthracite is the highest rank of coal, indicating a high degree of metamorphism and carbon content.
Here are some key features of raw anthracite coal:
1. Carbon Content: Anthracite coal has a high carbon content, typically ranging from 78% to 90%. This high carbon content contributes to its energy density and makes it a valuable fuel source.
2. Low Volatile Matter: Anthracite has a low volatile matter content, which means that it releases fewer gases when burned compared to lower-ranked coals. This characteristic contributes to its clean-burning properties.
3. Energy Density: Anthracite coal has a high energy density, providing a significant amount of heat per unit of weight. This makes it a desirable fuel for residential and industrial heating applications.
4. Hardness: Anthracite is a very hard coal, often referred to as "hard coal." Its hardness and resistance to breakage make it suitable for certain industrial applications, such as water filtration media.
Uses:
1. Industrial Applications: Anthracite can be used in various industrial processes where a high-temperature heat source is required.
2. Water Filtration: Due to its hardness and low impurity levels, anthracite is used as a filtration medium in water treatment processes.