Vente Charbon Coal - Chine ( Asie)

Item Unit Limit
of
Range Seller's
Guaranteed
Quality
Total Moisture (As received basis) % WT Max. 15 *¹ 10.5
Inherent Moisture (Air dried basis) % WT 2.5
Volatile Matter (Air dried basis) % WT 22 45 30.5
Fixed Carbon (Air dried basis) % WT Max. 60 50
Ash (Air dried basis) % WT Max. 17 17.0
Total Sulphur (As received basis) % WT Max. 1.00 1.00
Grindability (HGI) Min. 45 45
Hydrogen (Hd) (Dry Basis) % WT 4.50
Gross Calorific Value (Air dried basis)
Gross Calorific Value (As received basis) Kcal/kg
kcal/kg
min. 5,950 6,655
6,140
Net Calorific Value (As received basis)*² Kcal/kg min. 5,600 5,875
Nitrogen (Dry ash free basis) % WT max. 2.0 2.0
Ash Fusion Temperature IDT
(Reducing Atmosphere)
Deg. C
min. 1,200
1,250
Ash Analysis:
Fe2O3 % WT Max. 16 10.0
Na2O % WT Max. 2 1.0
K2O % WT Max. 3 1.0
Size Distribution: Above 50mm % Max. 5 5
Under 2mm % Max. 40 40
○ Each item above shall be determined in accordance with the appropriate ASTM standards.
*¹Total Moisture is acceptable up to 18.5% max, if ash content is equal to or less than 10.0%.
*² Net Calorific Value = Gross Calorific Value 5.72 (Har × 9)
Where:
Har = Hd × (100 TM)/100 + 0.1119 × TM
Har = Total hydrogen on as received basis