Coal
Description
Base Specifications
Coal Quality Rejection Limit
01
Gross Calorific Value As Received Basis
Kcal/kg
5000
Min. 4800
02
Total Moisture As Received Basis
%
25.2
Max. 32.2
03
Approx. Analysis
Total Ash As Received Basis
Volatile Constituent As Dried Basis
20
9
38.58
Max. 12.6
Min. 20 & Max. 43
04
Total Sulphur As Received Basis
%
0.70
Max. 0.9
05
HGI
Points
54
Min. 48
06
Ash Fusion Temperature (Reducing Initial Deformation)
°C
1320
Min. 1240
07
Ash Fusion Temperature (Reducing Spherical)
°C
1380
Min. 1280
08
Coal Size below 2mm
%
25.00
Max. 35
09
Coal Size above 50mm
%
Max. 10
Over 300mm is not allowed
10
Approx. Analysis
Resi. Moisture Air Dried Basis
Fixed Carbon Air Dried Basis
%
%
Max. 25
Min. 45
11
Ultimate Analysis
Carbon
(Dry, Ash Free)
Hydrogen
(Dry, Ash Free)
Oxygen
(Dry, Ash Free)
Nitrogen
(Dry, Ash Free)
%
Min. 45
Max. 3.64
Max. 13.19
Max. 0.86
12
Ash Analysis
SiO2
(Dry Basis)
Al2O3
(Dry Basis)
TiO2
(Dry Basis)
Fe2O3
(Dry Basis)
CaO
(Dry Basis)
MgO
(Dry Basis)
Na2O+0.66*K2O
(Dry Basis)
Others
(Dry Basis)
%
Max. 70.97
Max. 19.92
Max. 0.80
Max. 8
Max. 4.49
Max. 1.63
Max. 2.45
Max. 5.06
Coal
