Carbon Electrode Paste

Carbon Electrode Paste is a self-baking electrode used in submerged arc furnaces for delivering power to the charge mix. Electrode Pasts us 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) or Calcined Petroleum Coke (CPC) with Coal Tar Pitch.

Green Paste
PropertyUnitECA BaseCPC Base
Plasticity%As per customer’s requirementAs per customer’s requirement
Fixed Carbon%82 min86 min
Volatile Matter%12 max13 max
Ash%6 max1 max
Apparent Densitygm/cc1.65 min1.65 min
Baked Paste
Property Unit ECA Base CPC Base
Fixed Carbon % 93 min 99 min
Porosity % 25 Max 35 Max
Apparent Density gm/cc 1.45 min 1.40 min
Cold Crushing Strength kg/cm2 250 min 200 min
Electrical Resistivity Ohm.mm2 / meter 65 to 75 85 to 95

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.

Green Paste
PropertyUnitECA BaseCPC Base
Plasticity%As per customer’s requirementAs per customer’s requirement
Fixed Carbon%83 min87 min
Volatile Matter%11 max12 max
Ash%6 max1 max
Apparent Densitygm/cc1.60 min1.60 min
Baked Paste


PropertyUnitECA BaseCPC Base
Fixed Carbon%93 min99 min
Porosity%25 Max35 Max
Apparent Densitygm/cc1.45 min1.40 min
Cold Crushing Strengthkg/cm2250 min200 min
Electrical ResistivityOhm.mm2 / meter65 to 7585 to 95
Shrinkage%0.75 Max1.00 Max

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.

Specifications of CPC


PropertyUnitSpecificationCPC Base
Real Densitygm/cc2.00 – 2.15As per customer’s requirement, typical range 5-15
Bulk Densitygm/cc0.76 – 0.8288 Min
Fixed Carbon%99.00 min11 – 12
Moisture%0.05 max0.5 Max
Volatile Matter%0.50 max1.60 Min
Ash%0.50 max1.60 Min
Sulphur%0.75 – 2.001.60 Min

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


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.

Specification of Carbon Raiser/Additive


Fixed Carbon%90 – 95 
Ash%4.0 – 9.0 
Volatile Matter%1.00 – 1.50 
Moisture%0.50 max 
Sulphur%0.3 max