Are there different grades of coal or is it all the same?



  1. 0 Votes

    There are different grades. Coal has three main types, or grades. They are lignite, bituminous, and anthracite. Lignite is the swampy peat that squeezed and heated to form a brown, soft coal. With more heat and pressure added to the lignite, hydrocarbons are released and it then becomes the next higher-grade. Bituminous coal is black and hard. With even more heat and pressure the highest grade is yielded to become anthracite.

Please signup or login to answer this question.

Sorry,At this time user registration is disabled. We will open registration soon!