|
At CPL Distribution we are often asked to help schools and colleges by giving students information on coal, where it comes from and how it can be used. Therefore as part of our continued commitment to the community we have added this section to our website.
What is Coal?
Coal is a combustible, sedimentary, organic rock (composed primarily of carbon, hydrogen and oxygen) formed from vegetation, which has been consolidated between other rock strata to form coal seams, and altered by the combined effects of microbial action, pressure and heat over a considerable time period.
Coal is generally classified by what is known as "rank" which is based on the degree of transformation of the original plant material to carbon. The ranks of coals, from those with the least carbon to those with the most carbon, are:
|
Low Rank |
Hard Coal |
|
Lignite
Sub Bituminous |
Bituminous
Anthracite |
Where is Coal Used?
Different types of coals are used for different purposes because of the heat that they produce or their chemical make up. In general terms, coal that is used in domestic or industrial heating is anthracite. From this, smokeless fuels are also produced.
Other Sources of Information
The following links provide further information on the formation, extraction and use of coal. Please follow the link and the site will open in a new window:
| 
