Coal

Coal Uses

  • Used for electricity generation in thermal power plants
  • Used as a fuel in steel manufacturing, especially in coke production
  • Applied in cement plants as a primary energy source
  • Used in industrial boilers and kilns
  • Used in brick and ceramics manufacturing
  • Used in chemical production to produce coke, coal tar, and coal gas
  • Applied in fertilizer and chemical industries
  • Used in paper and pulp processing
  • Used in domestic and commercial heating
  • Used in activated carbon production for filtration and purification

Coal Specification

Coal Specification GAR 6300-6100 kcal/kg

Parameter

Typical Spec

Gross Calorific Value (GAR)

6,300 - 6,100 Kcal/kg

Total Moisture

≤ 10%

Inherent Moisture

≤ 8%

Ash Content

≤ 10%

Volatile Matter

≤ 42%

Fixed Carbon

By Difference

Total Sulphur

1%

High Sulphur

2%

Hardgrove Grindability Index (HGI)

Around 45—65

Size (0—50 mm)

90%

Coal Specification GAR 5800 - 5600 kcal/kg

Parameter

Typical Spec

Gross Calorific Value (GAR)

5,800 ( < 5,600 rejection)

Total Moisture

16— 18% (>18 rejection)

Inherent Moisture

11-13%

Ash Content

14— 16% (>18 rejection)

Volatile Matter

38 -

Fixed Carbon

By Difference

Total Sulphur

1% ( > 1 rejection)

Hardgrove Grindability Index (HGI)

Around 45 — 50

Size (0—50 mm)

90%

Coal Specification GAR 5500 - 5300 kcal/kg

Parameter

Typical Spec

Gross Calorific Value (GAR)

5,500 - 5,300 ( < 5,300 rejection)

Total Moisture

18— 20% (>20 rejection)

Inherent Moisture

9 — 12%

Ash Content

12— 14% (>16 rejection)

Volatile Matter

35-45%

Fixed Carbon

By Difference

Total Sulphur

1 - 1.5% ( > 2 rejection)

Hardgrove Grindability Index (HGI)

Around 40 — 50

Size (0—50 mm)

90%

Coal Specification GAR 4500 — 4000 kcal/kg

Parameter

Typical Spec

Gross Calorific Value (GAR)

6,300 - 6,100 Kcal/kg

Total Moisture

≤ 38 —40% (>45 rejection)

Inherent Moisture

≤ 8 — 16%

Ash Content

≤ 8 — 16% (>18 rejection)

Volatile Matter

≤ 35 — 45%

Fixed Carbon

By Difference

Total Sulphur

0.8 — 2.5% (>2.5 rejection)

Hardgrove Grindability Index (HGI)

Around 60

Size (0—50 mm)

90%

Coal Specification GAR 3400 - 3200 kcal/kg

Parameter

Typical Spec

Gross Calorific Value (GAR)

3,400 - 3,200 ( < 3,200 rejection)

Total Moisture

≤ 44 —46%

Inherent Moisture

≤ 12— 14%

Ash Content

≤ 6— 8% (>10 rejection)

Volatile Matter

≤ 38 —45%

Fixed Carbon

By Difference

Total Sulphur

0.6 - 0.8% (1% rejection)

Hardgrove Grindability Index (HGI)

Around 60

Size (0—50 mm)

90%

Coal Specification GAR 5500 - 5300 kcal/kg

Parameter

Typical Spec

Gross Calorific Value (GAR)

5,500 - 5,300 ( < 5,300 rejection)

Total Moisture

18— 20% (>20 rejection)

Inherent Moisture

9 — 12%

Ash Content

12— 14% (>16 rejection)

Volatile Matter

35-45%

Fixed Carbon

By Difference

Total Sulphur

1 - 1.5% ( > 2 rejection)

Hardgrove Grindability Index (HGI)

Around 40 — 50

Size (0—50 mm)

90%

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