Tag: rocks and minerals

Anthracite is the best quality of coal.

China tops in the production of coal.

The percentage of free carbon in lignite is 40%.

Coal gas mainly consists of low molecular mass alkanes and alkenes. It is used as a fuel.

The percentage of free carbon in peat is 10-15%.

The percentage of free carbon in bituminous coal is 70%.

The percentage of free carbon in anthracite is 90%. It is the coal of high grade.

Coal is not merely free carbon but it is a complex mixture of several organic compounds with varying amounts of free carbon, depending upon the type of coal.

Coal tar contains a large number of aromatic hydrocarbons which in turn find applications in dyes, drugs, explosives, plastics, etc.

Carbonisation of coal is done to meet the demand coke (required by steel industry as fuel) and coal tar (a rich source of aromatic compounds).