What Is the Bulk Density of Coal?
The bulk density of coal depends on the specific type of coal. It can range from 40 to 58 pounds per cubic feet, or 641 to 929 kilograms per cubic meter.
The three types of coal are anthracite coal, bituminous coal and lignite coal. Anthracite coal has a bulk density of 50 to 58 pounds per cubic feet, or 800 to 929 kilograms per cubic meter. It is a mature coal and is very hard and shiny. Bituminous coal has a bulk density of 42 to 57 pounds per cubic feet, or 673 to 913 kilograms per cubic meter. It ignites easily and burns long with a relatively long flame. Lignite coal has a bulk density of 40 to 54 pounds per cubic feet, or 641 to 865 kilograms per cubic meter. It is considered to be immature coal, and it is somewhat light in color and remains soft.
