What kind of coal is found in Indiana and what makes it important?

Published 06/24/2009 07:35 AM   |    Updated 06/24/2009 07:35 AM
What kind of coal is found in Indiana and what makes it important?

There are four major coal classifications: anthracite, bituminous, sub bituminous and lignite. Indiana coal is bituminous.

Coal is generally characterized and priced based upon its different characteristics. Some of the most common are:

BTUs is a measurement of how hot coal burns. Indiana coal provides good heat value; 10,500-12,000 BTUs/lb.

Moisture Content isthe amount of water reduces the fuel or burning power, and can generate excess steam. Indiana is known for low levels of moisture ranging from 6-15 percent.

Ash is material remaining after coal is burned. These are impurities which must be collected and disposed of. Indiana coal ash content is considered moderate to low at 7 to 13 percent by weight.

Sulphur is an impurity which is removed by processing on-site and when burned at a utility. Sulphur content of Indiana coal varies widely. Some coals are very low (0.5 percent) in sulphur and considered a compliance grade. Others are generally thought of as a "high-sulfur" coal with 2-6 percent by weight.

For more information you may visit the Energy Information Administration and the Indiana Geological Survey web sites.

Was this answer helpful?
 
Your rating has been submitted, please tell us how we can make this answer more useful.

Print