The coal is first coked, removing volatiles, then steam treated to activate it. Chemical processes for activating coke produced from bituminous coal have also been investigated.

Origin

Like other ranks of coal, bituminous coal forms from thick accumulations of dead plant material that are buried faster than they can decay. This usually takes place in peat bogs, where falling plant debris is submerged in standing water. The stagnant water excludes oxygen, creates an acidic environment, and slows

1.Previous
3.Next