Coal and Coke

STC is a regular and large importer of coal and coke. The coal is supplied mainly to power generation companies like NTPC, GSECL, APGENCO, NALCO, TNEB etc.

 

It has imported 27.15 MMT of Coal & Coke valued Rs 16,869 crore in the past few years.

 

Typical Specifications of imported products:

 

Steam coal

Parameter

Typical Specification

Total Moisture (ARB)

7-10% by weight

Inherent Moisture (ADB)

2-5% by weight

Volatile Matter (ADB)

26-35% by weight

Ash Content (AD)

10-15% by weight

FC/VM (ADB)

1.4-2.0

Sulphur (ADB)

0.2-0.6% by weight

GCV (ARB)

6100 to 6800 Kcal/Kg

GCV (ADB)

6400-7000 Kcal/Kg

HGI

45-55

Size

0-50 mm

AFT (IDT/HT/FT)

(+1300/+1390/+1480)

 

Hard coking coal

Parameter

Typical Specification

Ash (ADB)

10% max

Total Moisture (ARB)

10% max

Inherent Moisture (ADB)

1% approx.

Volatile Matter (ADB)

20% approx.

Sulphur (ADB)

0.4% max

CSN

7 approx

Size

0-50 mm

 

Lam coke

Parameter

Typical Specification

Ash (DB)

12-13% max (% by weight)

Moisture (ARB)

5% max (% by weight)

Volatile Matter (BD)

1.5% max (% by weight)

Sulphur (BD)

0.6% max (% by weight)

Phosphorus (DB)

0.035% max (% by weight)

CSR

62% Min

CRI

24%-26% max

M40

80% Min

M10

6% max

Mean Size

55 mm Min

 

Met coke

Parameter

Typical Specification

Ash (DB)

12% max (% by weight)

Moisture

5% max (% by weight)

Volatile Matter (BD)

1.5% approx. (% by weight)

Sulphur (BD)

0.6% approx. (% by weight)

Phosphorus (DB)

0.035% max (% by weight)

CSR

62% Min

CRI

24%-26% max

M40

80% Min

M10

9% max

Fixed Carbon

85 Min