What type of coal is characterized by having a high fixed carbon content?

The type of coal characterized by having a high fixed carbon content is anthracite. Anthracite is known for its high carbon concentration, which can exceed 86%. This high carbon content results in a greater energy density compared to other coal types, making anthracite an excellent fuel source for applications requiring high heat output.

Anthracite has fewer volatile compounds than other coal types, which contributes to its efficiency and combustion characteristics. It's more suitable for high-temperature industrial processes and is often used in residential heating due to its smokeless burning properties.

In contrast, the other coal types have lower fixed carbon contents. Lignite has the lowest carbon content and a high moisture content, making it less efficient as a fuel source. Bituminous coal contains a moderate level of fixed carbon and is commonly used for electricity generation and steel production, but it does not match the carbon content of anthracite. Peat is considered an early stage in the coal formation process and has significantly lower carbon content, as it consists mostly of decomposed plant material.