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It is possibly very hard to
imagine how different our world was 600 to 300 Million years ago. Back in the period that
coal is formed from was dominated by plant live and very little animal life.
Graphite Coal is a higher grade of coal
and is considered to be the highest grade of coal. It is ranked above anthracite coal.
Is the highest in energy content and lowest in
impurities of the coals that are burned. Anthracite coal is a sedimentary rock that is the hardest coal
and a glossy black color. 
This is a more variable coal
than Bituminous has a higher moisture content and is
subject to spontaneous
combustion.
Bituminous coal is called black
coal and is not as hard
as Anthracite coal. It contains
deposits of bitumen that
is a tar like substance so this makes it softer.
Is a brown colored coal that
is a soft fuel with characteristics that put it somewhere between coal & peat. This coal has a carbon content of has a
carbon content of around 25-35%.| © 2013 www.goyalenergy.in, All Rights Reserved | Developed & Hosted by: www.cyberframe.in |
