USSLT GLOBAL

Coal

Coal – A Reliable Energy Source

Coal is a naturally occurring fossil fuel that has been a primary energy source for centuries. It is widely used in power generation, industrial heating, and manufacturing due to its high energy content, affordability, and availability. Depending on its carbon content and heating value, coal is classified into different grades, including thermal coal, metallurgical coal, and steam coal.

Steam Coal – High-Efficiency Fuel for Industries

Steam coal, also known as thermal coal, is primarily used to generate steam for electricity production and industrial processes. It is a key energy source for power plants, cement industries, steel manufacturing, and other industrial applications.

Uses of Steam Coal

  • Power Generation: Steam coal is burned in boilers to produce steam, which drives turbines in power plants, generating electricity.
  • Cement Industry: Used as a fuel in rotary kilns to heat raw materials for cement production.
  • Steel Manufacturing: Helps in coke production for blast furnaces in steel plants.
  • Industrial Heating: Used in boilers and furnaces for industries requiring high-temperature heat.

At USSLT Global, we procure high-quality coal from reliable and top producers across the world to meet the diverse energy needs of our clients. Our strong partnerships ensure a consistent supply of premium coal tailored for power generation, cement manufacturing, and industrial applications.

Indonesian Coal

Indonesian coal, valued for its low sulfur and ash content, is one of the most versatile products in USSLT Global’s offerings. It is widely used in power generation, cement manufacturing, and other industries. USSLT Global’s robust logistics network ensures a steady supply of Indonesian coal, tailored to client needs.

Technical Specification for Indonesian Coal:

Parameter Unit Type I Type II Type III Type IV Type V Type VI
Gross Calorific Value (ARB) Kcal/kg 6500 6200 5400 5000 4800 4200
Total Moisture (ARB) % 11-12 11-13 21-23 25-28 26-30 35-38
Inherent Moisture (ADB) % 6-8 5-7 12-14 10-12 10-12 11-13
Ash (ARB) % 8-9 12-14 6-8 6-8 6-8 6-8
Sulfur (ARB) % 3-4 3-4 <1 <1 <1 <1
Volatile Matter (ARB) % 39-42 39-43 40-42 40-42 40-42 40-42

South African Coal

South African coal is well known for its high fixed carbon content and superior combustion efficiency. USSLT procures RB1, RB2, and RB3 grade coal from leading South African mines, ensuring a steady supply for thermal power plants, cement industries, and metallurgical applications.

Technical Specification for South African Coal:

Parameter Unit RB1 RB2 RB3
Net Calorific Value (ARB) Kcal/kg 6000 5700 5500
Total Moisture (ARB) % 10-12 11-13 12-14
Inherent Moisture (ADB) % 3-5 3-5 3-5
Ash (ARB) % 12-15 14-17 20-23
Sulfur (ARB) % <1 <1 <1
Volatile Matter (ARB) % 22-26 21-25 20-24

Australian Coal

Australia is one of the world’s largest coal exporters, known for its high-energy, low-ash, and low-sulfur thermal coal. Australian coal is widely used in power plants and industrial applications due to its superior combustion efficiency and lower emissions.

Technical Specification for Australian Coal:

Parameter Unit NEWC High Ash
Net Calorific Value (ARB) Kcal/kg 6000 5500
Total Moisture (ARB) % <14 <14
Inherent Moisture (ADB) % 3-4 3-4
Ash (ARB) % 12-14 20-22
Sulfur (ARB) % <1 <1
Volatile Matter (ARB) % 32-35 28-32

US Coal

Coal from the United States is characterized by high-energy content and consistent quality. USSLT sources bituminous and sub-bituminous coal from the Appalachian and Powder River Basins, making it a preferred choice for power generation and industrial applications worldwide.

Technical Specification for US Coal:

Parameter Unit Type I Type II
Net Calorific Value (ARB) Kcal/kg 6900 6150
Total Moisture (ARB) % 5-8 13-15
Inherent Moisture (ADB) % 3-6 7-8
Ash (ARB) % 7-8 8-10
Sulfur (ARB) % 3-4 3-4
Volatile Matter (ARB) % 36-40 35-40

Tanzanian Coal

Tanzanian coal is known for its high quality, with consistent calorific value, low sulfur content, and suitability for a variety of industrial applications, including power generation, cement production, and metallurgy. The country’s coal reserves are abundant, particularly in the southern regions, and are becoming increasingly attractive to global markets due to their reliable performance and environmental advantages.

 

At USSLT Global, we take pride in sourcing premium-grade coal directly from our own mines in Tanzania and collaborating with other established coal miners in the region. This dual-sourcing strategy allows us to offer a continuous and scalable supply to meet the demands of our international customers. By combining in-house mining operations with partnerships, we ensure a steady flow of high-quality coal for our clients worldwide.

Technical Specification for Tanzanian Coal:

Parameter Method (ISO Standard) Unit As Received Basis (ARB) Air-Dried Basis (ADB) Dry Basis (DB)
Total Moisture ISO 589 % 3.88
Moisture in Analysis Sample ISO 11722 % 3.34
Ash ISO 1171 % 13.99 14.07 14.56
Volatile Matter ISO 562 % 25.35 25.49 26.37
Fixed Carbon ISO 17246 % 56.78 57.10 59.07
Total Sulphur ISO 19579 % 1.11 1.12 1.16
Gross Calorific Value ISO 1928 kcal/kg 6569 6606 6838
Net Calorific Value ISO 1928 kcal/kg 6358 6397 6637
Total Carbon ISO 29541 % 70.57 70.97 73.42
Hydrogen (excludes H of moisture) ISO 29541 % 3.85 3.88 4.01
Total Nitrogen ISO 29541 % 1.65 1.66 1.72
Oxygen by difference ISO 1170 % 4.95 4.96 5.13
Hydrogen (includes H of moisture) ISO 29541 % 4.29
Oxygen by difference ISO 1170 % 8.38
Hardgrove Grindability Index ISO 5074 --- 52