Characteristics of NEC coal

Proximate analysis report

Useful Heat Value( Kcal/Kg)

Exceeding 7099

7000-7099

6200-6299

Ash

6-9%

8 - 10%

15 - 17%

Total Moisture

2-2.5%

3 - 5%

3 - 7%

Inherent moisture

1.6-2.0%

1.8-2.5%

2.0--2.5%

Volatile Matter

40.0 - 45.0 %

39.0 - 44.0 %

36.0 - 39.0 %

Fixed carbom

47.0 - 50.0 %

44.0 - 49.0 %

41.0 - 44.0 %

HGI

62

62

62

Sulphur

2.0 - 3.5 %

2.0 - 3.5 %

2.0 - 3.5 %

Ultimate analysis report

Carbon

70%

68%

64%

Hydrogen

4.90%

4.80%

4.70%

Nitrogen

1.30%

1.30%

1.30%

Sulphur

2.2%

2.50%

2.40%

Oxygen by difference

21.60%

23.30%

25.80%

Caking Index

22 to 25

20 to 25

17 to 20

Initial Deformation Temp(IDT)

1100 deg C

Hemisphere Temp (HT)

1350 deg C

Flow Temp (FT)

1400 deg C

Swelling Index

4 1/2

LTGK ASSAY AT 600%(COKE TYPE)

G3

G3

C