STI Enterprises

International Coal Traders

About Us

STI Enterprises is a LEVEL 1 BEE company operating out of Kwa-Zulu Natal, South Africa.

We have the capacity to export 300000 MT of Thermal coal per month, more specifically RB1 and RB3 grade coal. Shipped from either Richards Bay port or Durban Port.

Thermal coal is a type of bituminous coal which is used for power and heat generation. It is also referred to as non-coking coal, steam coal, or boiler coal. In electricity generation, thermal coal is ground to a powder and fired into a boiler to produce heat, which in turn converts water into steam that is kept at extremely high pressures and elevated temperatures throughout to enhance efficiency of the coal plant. The steam powers a turbine coupled to an alternator to rotate at high speed in a magnetic field, which generates electricity for the power grid.

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RB1 Grade

This is a standard specification known as RB1 and includes analyses only on calorific value, total moisture, volatile matter, ash, sulphur, hardgrove grindability index, ash fusion temperature, and calcium oxide in ash.

Our Standard RB1 Grade coal is of high quality and has a caloric value of 6000KC/KG

RB3 Grade

RB3 coal is low calorific, mid calorific, upper middle calorific and high calorific. Low calorific. 1. gross calorific value ( adb ) 5,500 – 5,300 kcalkg.

RB3 type coals offer high-calorific value and high energy efficiency.

Contact Us

Durban, Kwa-Zulu Natal

+27 74 993 6438

sales@sti-enterprises.co.za

Get Coal

RB1 Grade

RB3 Grade

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