Coal Qualities |
Unit |
Specification |
Gross Calorific Value (as dried basis) |
kcal/kg |
5300-5500 |
Total Moisture (as received basis) |
WT |
30 |
Moisture (air dried basis) |
% WT |
18 |
Volatile Matter (air dried basis) |
% WT |
36-42 |
Fixed Carbon (air dried basis) |
% WT |
By difference |
Ash (air dried basis) |
% WT |
3-5 |
Total Sulphur (air dried basis) |
% WT |
0.3 |
Grindability (HGI) |
|
50-55 |
(Dry Basis) Hydrogen (Hd) |
% WT |
Max 6 |
Nitrogen (Dry ash free basis) |
% WT |
Max 1 |
Ash Fusion Temp. IDT (red atmosphere) |
|
Min 1180° |
Size Distribution 0 – 50 mm |
% |
95 |
Coal Qualities |
Unit |
Specification |
Gross Calorific Value (as dried basis) |
kcal/kg |
6300 |
Total Moisture (as received basis) |
WT |
15 |
Moisture (air dried basis) |
% WT |
8 |
Volatile Matter (air dried basis) |
% WT |
40-42 |
Fixed Carbon (air dried basis) |
% WT |
By difference |
Ash (air dried basis) |
% WT |
15 |
Total Sulphur (air dried basis) |
% WT |
1 |
Grindability (HGI) |
|
38-42 |
(Dry Basis) Hydrogen (Hd) |
% WT |
Max 5 |
Nitrogen (Dry ash free basis) |
% WT |
Max 1 |
Ash Fusion Temp. IDT (red atmosphere) |
|
Min 1250° |
Size Distribution 0 – 50 mm |
% |
95 |
Operations 
