Metallurgical & Coking Coal
Prime Hard Coking Coal (HCC), Semi-Soft, and PCI for blast furnaces, ferroalloy smelters, and foundries. Guaranteed high coke strength (CSR >65%) and ultra-low phosphorus.
"Every cargo hatch is tested continuously at load-port with sealed 180-day referee samples."
"High-plasticity metallurgical coal for high-load blast furnace and foundry cupolas."
High Fluidity & Blast Furnace Load Stability
Vitrinite reflectance (Ro, max 1.15–1.35%) and Gieseler maximum fluidity (>1,000 ddpm) create high-density carbon matrices capable of supporting high metallurgical burdens in large blast furnace shafts.
Supply Grades
Premium Hard Coking Coal (HCC)
Prime metallurgical coal with exceptional CSR (>65%), low volatile matter, and low phosphorus for blast furnace burden stability.
Semi-Soft Coking Coal (SSCC)
High-fluidity blending coal that enhances blend plasticity and carbonization economics while maintaining target coke strength.
Pulverized Coal Injection (PCI) Coal
Low-volatile, low-ash granular coal injected directly into blast furnace tuyeres to replace expensive foundry coke.
Guaranteed Metallurgical Assays
| Parameter | Guaranteed Range | Test Standard | Smelter Impact |
|---|---|---|---|
| Coke Strength after Reaction (CSR) | 60.0% – 70.0% | ASTM D5341 / ISO 18894 | Ability of coke to withstand high temperature and mechanical load in lower blast furnace zone. |
| Coke Reactivity Index (CRI) | 22.0% – 28.0% | ASTM D5341 / ISO 18894 | Rate at which coke reacts with CO2 gas; lower CRI preserves physical lump integrity. |
| Crucible Swelling Number (CSN / FSI) | 7.0 – 9.0 (Free Swelling Index) | ASTM D720 / ISO 501 | Indicates the degree of expansion and plastic state during thermal carbonization. |
| Volatile Matter (VM - ADB) | 19.0% – 24.0% (Hard) / 28.0%–35.0% (Semi-Soft) | ASTM D3175 / ISO 562 | Determines coke yield in by-product ovens; low-VM yields higher coke mass per ton. |
| Maximum Fluidity (Gieseler) | 500 – 10,000 ddpm | ASTM D2639 | Plastic range and fluidity during thermal softening; allows bonding of inert coal particles. |
| Total Ash (ADB) | ≤ 9.5% (Hard Coking) / ≤ 10.5% (PCI) | ISO 1171 | Ash goes straight to blast furnace slag; lower ash reduces flux/limestone and fuel rate. |
| Total Sulfur (ADB) | ≤ 0.65% (Max 0.80%) | ISO 19579 | Sulfur enters hot liquid metal/pig iron; strictly constrained by steelmakers to avoid brittleness. |
| Phosphorus in Coal | ≤ 0.035% (Max 0.05%) | ISO 622 | Critical for cold-rolled steel quality; phosphorus cannot be removed in the blast furnace. |
Petrographic & Thermal Characteristics
Origins & Load Ports
Shipping & Handling
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Binding CFR/CIF terms delivered within 24 hours for Prime HCC, Semi-Soft, or PCI parcels.