Commodities/Thermal Steam Coal

Industrial Solid Fuel & Calcining Energy

Thermal Steam Coal

Richards Bay RB1/RB2 and Mozambique washed steam coal for rotary kilns and boilers. Guaranteed GCV >5,500 kcal/kg NAR, low ash (<15%), and low moisture.

GCV (NAR)5,500–6,000 kcal

Total Moisture≤ 11.5% ARB

Ash Content≤ 15.0% ADB

Total Sulfur≤ 1.00% Max

Giant bucket wheel excavator operating in heavy surface coal mining concession

Continuous Open-Cast Coal Extraction SystemHD ASSET

Richards Bay & Mozambique

"High-calorific, low-moisture bituminous coal calibrated for rotary kiln calcination."

High-speed conveyor discharge pulley streaming mineral lumps onto terminal stockpile with open pit view

Automated Mechanical Belt Stacking & BlendingHD ASSET

Mechanical Wash & Sizing

"In-line mechanical sampling and homogeneous parcel blending prior to vessel loading."

Heavy Medium Dense Separation & Sizing

High-Calorific Bituminous Steam Coal

Dense medium cyclones and spirals reduce raw unwashed ash while optimizing volatile matter (22–28%) for rapid ignition and sustained flame kinetics in pulverized coal burners and rotary calcining kilns.

Hardgrove Grind (HGI)48 – 55

Ash Fusion (AFT IDT)> 1,250°C

Volatile Matter22.0% – 28.0%

Supply Grades

THC-RB1-6000

Richards Bay RB1 Benchmark Thermal Coal

The premier South African export benchmark. Low moisture, low ash, and high energy density for maximum thermal efficiency.

GCV (NAR):6,000 kcal/kg ± 100

Total Moisture:≤ 10.0% ARB

Ash Content:≤ 15.0% ADB

Total Sulfur:≤ 1.00% ADB

Target Application: High-throughput cement kilns (dry process), utility power stations, heavy industrial calcining.

THC-RB2-5500

Richards Bay RB2 / Mozambique Washed Coal

Cost-effective high-performance steam coal from Richards Bay & Moatize with high HGI and stable burnout characteristics.

GCV (NAR):5,500 kcal/kg (5,800 GCV)

Total Moisture:≤ 11.5% ARB

Ash Content:≤ 18.0% ADB

Volatile Matter:22.0% – 26.0%

Target Application: Cement grinding & clinker plants, industrial boilers, sugar mills, textile steam plants.

THC-IND-5000

Indonesian Mid-Calorific High-Volatile Coal

High volatile matter (38–42%) coal providing ultra-rapid ignition and low ash for blending or low-temp industrial boilers.

GCV (GAR):5,000 – 5,300 kcal/kg

Volatile Matter:36.0% – 42.0%

Ash Content:≤ 8.0% ADB

Total Sulfur:≤ 0.60% ADB

Target Application: Industrial steam boilers, lime kilns, power stations with high-moisture handling capacity.

Guaranteed Combustion Assays

Parameter	Guaranteed Range	Test Standard	Impact
Gross Calorific Value (GCV - ARB)	5,500 – 6,000 kcal/kg (Up to 6,200 kcal/kg NAR)	ASTM D5865 / ISO 1928	Thermal energy density; determines fuel mass consumption per ton of clinker or megawatt.
Net Calorific Value (NAR)	5,200 – 5,850 kcal/kg	ISO 1928 Calc	Usable effective heat delivered in combustion after subtracting moisture vaporization.
Total Moisture (ARB)	8.0% – 12.0% (Max 14.0%)	ASTM D3302 / ISO 589	Water weight ballast; high moisture reduces mill efficiency and increases freight penalty.
Inherent Moisture (ADB)	2.5% – 5.0%	ISO 11722	Moisture trapped in coal pores; affects grindability and drying requirements.
Ash Content (ADB / ARB)	12.0% – 22.0% (Guaranteed < 16% on RB1/RB2)	ASTM D3174 / ISO 1171	Non-combustible residue; in cement kilns, ash blends into clinker stoichiometry.
Volatile Matter (ADB)	22.0% – 28.0%	ASTM D3175 / ISO 562	Flame stability and ignition velocity in burner pipes; prevents unburnt fuel carryover.
Total Sulfur (ADB)	0.50% – 1.00% (Max 1.2%)	ASTM D4239 / ISO 19579	Critical for emissions compliance (SOx) and preventing preheater cyclone blockages.
Hardgrove Grindability Index (HGI)	50 – 62 HGI	ASTM D409 / ISO 5074	Ease of pulverizing in vertical roller mills (VRM) or ball mills; higher HGI = lower power.

Physical & Ash Fusion Characteristics

Sizing (0 – 50 mm)

Min 85% %

Fines (< 2 mm)

Max 15% %

Ash Fusion Temp (IDT)

> 1,250°C (Reducing) °C

Stowage Factor

1.18 – 1.25 m³/MT (42–44 cuft/LT)

Origins & Load Ports

🇿🇦 South AfricaPorts: Richards Bay (RBCT), Durban

🇲🇿 MozambiquePorts: Maputo / Matola Coal Terminal, Beira

🇮🇩 IndonesiaPorts: Taboneo, Muara Berau, Samarinda

🇹🇿 Tanzania / RegionPorts: Mtwara, Dar es Salaam

Shipping & Handling

Handymax (35,000–45,000 MT) / Supramax (50,000–58,000 MT) / Panamax (65,000–75,000 MT)

Self-Discharge & Geared Vessel options for non-crane ports

Direct Tipping to Bonded Yard & Road Siding Dispatch (Mombasa / Dar es Salaam)

Ready to Inquire on Thermal Coal Supply?

Binding CFR/CIF terms delivered within 24 hours for RB1, RB2, or custom blends.