• Composition: Contains 86% to 98% fixed carbon and very
low volatile matter.

• Clean Burning: Ignites with difficulty, but burns slowly with a
hot, pale blue flame, producing almost no smoke, dust, or tar.

• Energy Output: Generates a high heat output, yielding
roughly 13,000 to 15,000 BTU per pound.

Key Technical Specifications
• Fixed Carbon: 86% – 95%
• Calorific Value (GCV/NAR): 6,000 – 8,100 kcal/kg
• Volatile Matter: 2% – 14% (typically 2.5% – 4% for premium
grades)
• Ash Content: 7% – 13%
• Sulfur Content: 0.3% – 1.5%
• Moisture Content: Up to 13.5%

Common Sizing Grades
• AK (Large): 50 mm to 100+ mm
• AKO (Nut-Egg): 25 mm to 100 mm
• AO (Nut): 13 mm to 25 mm
• AM (Small): 6 mm to 13 mm
• ASSH (Fines): 0 mm to 6 mm [1, 2]