what are the different types of coal? what are their uses
Answers
There are four major types (or “ranks”) of coal. Rank refers to steps in a slow, natural process called “coalification,” during which buried plant matter changes into an ever denser, drier, more carbon rich, and harder material. The four ranks are:
Anthracite:
- The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter.
Bituminous:
- Bituminous coal is a middle rank coal between subbituminous and anthracite. Bituminous usually has a high heating (Btu) value and is the most common type of coal used in electricity generation in the United States. Bituminous coal appears shiny and smooth when you first see it, but look closer and you may see it has layers.
Subbituminous:
- Subbituminous coal is black in color and dull (not shiny), and has a higher heating value than lignite.
Lignite:
- Lignite coal, aka brown coal, is the lowest grade coal with the least concentration of carbon.
Also, there is peat. Peat is not actually coal, but rather the precursor to coal. Peat is a soft organic material consisting of partly decayed plant and, in some cases, deposited mineral matter. When peat is placed under high pressure and heat, it becomes coal.
Anthracite:- It gives highest energy among all types of coal you can say that it is the highest rank of coal
Bituminous:- Middle rank of coal
Subbituminous: Subbituminous coal is black in color and dull (not shiny) and has a higher heating value than burning.
These coals are used in steam engines industries making toys etc
Charcoal:- it is basically a porous black solid, consisting of an amorphous form of carbon, obtained as a residue when wood, bone, or other organic matter is heated in the absence of air. It is used in making toothpaste and for other remedies it is used for barbecuing