Products

Carbon Electrode Paste

Carbon Electrode Paste is a self-baking carbonaceous compound used in submerged arc furnaces for delivering energy to the charge mix. Electrode Paste is added to the electrode column, the temperature increase causes the paste to melt and subsequently bake forming a block of electrically conductive carbon. Electrode Paste is essentially a mix of Electrically Calcined Anthracite (ECA) and Coal Tar Pitch.

Specifications of Green Paste

Property

Unit

Specification

Plasticity

%

As per the customer’s requirement

Fixed Carbon

%

82 min

Volatile Matter

%

12 max

Ash

%

6 max

Apparent Density

gm/cc

1.60 min

Specifications of Baked Paste

Property

Unit

Specification

Fixed Carbon

%

93 min

Apparent Density

gm/cc

1.45 min

Cold Crushing Strength

kg/cm2

250 min

Electrical Resistivity

Ohm.mm2 / meter

65 to 75

Tamping Paste

Tamping Paste or Ramming Paste is used in the lining of the submerged arc furnace. It is softened by heating and then applied over the refractory lining of the SAF. Good quality Tamping Paste is essential to the long life of the furnace lining.

Specifications of Green Paste

Property

Unit

Specification

Plasticity

%

As per customer’s requirement

Fixed Carbon

%

83 min

Volatile Matter

%

11 max

Ash

%

6 max

Apparent Density

gm/cc

1.60 min

Specifications of Baked Paste

Property

Unit

Specification

Fixed Carbon

%

93 min

Apparent Density

gm/cc

1.45 min

Cold Crushing Strength

kg/cm2

250 min

Electrical Resistivity

Ohm.mm2 / meter

65 to 75

Calcined Petroleum Coke

Calcined Petroleum Coke (CPC) is obtained by calcining Raw Petroleum Coke (RPC) at temperature as high as 1400•C. RPC is the by-product of the oil refining process and is derived from the distillation of petroleum crude in delayed cokers. CPC is used in the Aluminium, Graphite Electrode, Steel, Titanium Dioxide and other carbon consuming industries. The specification can be tailored as per the customer’s requirement.

Specifications of CPC

Property

Unit

Specification

Real Density

gm/cc

2.00 – 2.15

Bulk Density

gm/cc

0.76 – 0.82

Fixed Carbon

%

99.00 min

Moisture

%

0.05 max

Volatile Matter

%

0.50 max

Ash

%

0.50 max

Sulphur

%

0.75 – 2.00

Graphitized Petroleum Coke

Graphitized petroleum coke is made by heating petroleum coke at a temperature of 2500°C to 3000°C in an Acheson furnace. It is used in the manufacturing of high quality steel & foundry products.

Specifications of GPC

Property

Unit

Specification

Fixed Carbon

%

95 min

Sulphur

%

0.03 – 0.15

Ash

%

0.50 – 1.00

Volatile Matter

%

0.50 – 1.00

Moisture

%

0.50 max

Nitrogen

%

0.03 max

Hydrogen

%

0.01 max

Carbon Raiser/Additive

Carbon Raiser/Additive is made from calcination of high quality Anthracite Coal. It is characterized by high carbon content (Reaching up to 95%) and low Sulphur content.

Specifications of Carbon Raiser/Additive

Property

Unit

Specification

Fixed Carbon

%

90 – 95

Ash

%

4.0 – 9.0

Volatile Matter

%

1.00 – 1.50

Moisture

%

0.50 max

Sulphur

%

0.3 max

Anthracite Coal

Anthracite, also known as hard coal and black coal, is a hard, compact variety of coal that has a sub-metallic lustre. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal.

Specifications of Anthracite (Low Ash) 0 - 13 mm

Parameter

Unit

Specification

Moisture (ARB)

%

12.0

Ash (DB)

%

8.0

Volatile Matter (DB)

%

3.0

Sulphur (DB)

%

0.3

Phosphorus (DB)

%

0.05

Specifications of Anthracite 0 - 13 mm

Parameter

Unit

Specification

Moisture (ARB)

%

12.0

Ash (DB)

%

11.0

Volatile Matter (DB)

%

3.0

Sulphur (DB)

%

0.3

Phosphorus (DB)

%

0.05

Specifications of Anthracite 6 - 20 mm / 13 - 25 mm / 10 - 80 mm / 25 - 80 mm

Parameter

Unit

Specification

Moisture (ARB)

%

10.0

Ash (DB)

%

6.0

Volatile Matter (DB)

%

3.0

Sulphur (DB)

%

0.3

Phosphorus (DB)

%

0.02

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