Anthracite is the highest rank coal and is characterized buy low volatile matter (always less than 10%) and high carbon content. It has a semi- metallic luster and is capable of burning without smoke. Semi- anthracite is coal midway between low volatile bituminous coal and anthracite.


(1-6 �?�?)

Ash content for dry condition
no more than 4 %

Volatile substances
no more than 3 %

Moisture
no more than 9.5 %

Lowest heat of combustion (GCF)
at least 7,200 kcal/kg

Total sulfur for dry condition
no more than 1 %


(0.2-1 �?�?)

Ash content for dry condition
no more than 30 %

Volatile substances
no more than 6 %

Moisture
no more than 10 %

Lowest heat of combustion
at least 5,000 kcal/kg

Total sulfur for dry condition
no more than 1 %


(6-13 �?�?)
Ash content for dry condition
no more than 4 %

Volatile substances
no more than 4 %

Moisture
no more than 8 %

Lowest heat of combustion
at least 7,200 kcal/kg

Total sulfur for dry condition
no more than 1 %

Trivia Content
no more than 18 %



(13-25 �?�?)

Ash content for dry condition
no more than 5 %

Volatile substances
no more than 3.5 %

Moisture
no more than 6.5 %

Lowest heat of combustion
at least 7,200 kcal/kg

Total sulfur for dry condition
no more than 1 %

Trivia Content
no more than 17 %