RB3 Coal Specification Parameter Unit Typical RB3 Value Calorific Value (NAR) kcal/kg 4,800 min (≈ 5,200–5,500 typical) Total Moisture (AR) % ≤ 12% Ash (adb) % ≤ 20% Volatile Matter (adb) % 22–27% Fixed Carbon (adb) % 45–52% Sulphur (adb) % ≤ 1.0% HGI Index 45–55 Size mm 0–50 mm or 25–50 mm Application: RB3 Low-grade thermal Small boilers, brick/ceramic kilns, blending fuel
RB3 coal is a grade of South African coal used primarily for its cost-effectiveness in applications like domestic heating, brick kilns, and small industrial operations. While it has a lower calorific value and higher sulfur content compared to higher grades like RB1 and RB2, it provides a reliable energy source for budget-conscious consumers and industries.