CMPDIL, CCO to grade Jhama coal

State-owned CIL's consultancy and mine planning firm CMPDIL, Coal Controllers Organisation has been assigned with the responsibility for grading of Jhama coal or natural coke and subsequently a decision on manner of its disposal would be taken.
"There was was no grading done for Jhama. Hence, it was recently decided to get the grading for jhama done by CMPDIL/CCO. After the grading of jhama, its manner of disposal to end users who required the same may be decided subsequently," an official said.
Jhama Coal is characterised by high ash, low volatile matter and high fixed carbon. Jhama is usually dull, compact and hard in nature. Jhama is widely used in lime manufacturing, ferro alloys and brick manufacturing units.

"Jhama occurred in only some collieries including captive coal blocks due to igneous intrusion of coal which resulted in alteration of quality of coal," the official said.
The gross calorific value (GCV) of jhama was usually miniscule and hence it could not be used in the end-uses like power, iron and steel, cement.
"Due to nominal GCV of jhama, it would not come under the ambit of washery rejects, middlings, carbonaceous shale, etc," the official said.