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Calcined Petroleum
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Carbon Electrode
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Carbon Tamping Paste (CTP)

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What is Carbon Tamping Paste?

Carbon Tamping Paste(CTP) 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 for the long life of the furnace lining.

The Manufacturing Process

The manufacturing process for Tamping Paste is the same as for Carbon Electrode Paste,the only difference being the fraction sizes of ECA/CPC which are different for Tamping Paste and the binder content is lower.

Specifications


Green Paste

Property ECA Based CPC Based
Plasticity As per customer’s requirement, As per customer’s requirement,
  typical range 5-15% typical range 5-15%
Fixed Carbon 84% Min 88% Min
Volatile Matter 10-11% 11-12%
Ash 5.0% Max 0.5% Max
Apparent Density 1.60gm/cc Min 1.60gm/cc Min

 

Baked Paste

Property ECA Based CPC Based
Fixed Carbon 94% Min 99% Min
Porosity 25% Max 35% Max
Apparent Density 1.40gm/cc Min 1.35gm/cc Min
Cold Crushing Strength 250kg/cm2 Min 200kg/cm2 Min
Electrical Resistivity 55-65 Ohm.mm2/meter 85-95 Ohm.mm2/meter
Shrinkage 0.75% Max 1.00% Max

 


Note

Plasticity can be altered to suit the customer’s requirement. We can supply Tamping Paste in both cylinders and briquettes or as per customer’s requirement though the most preferred size is 2 – 4 inch briquettes. CR recommends using ECA based Tamping Paste for longer furnace lining life.


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Carbon Tamping Paste | Carbon Paste | Low sulphur Calcined Petroleum Coke | Carbon Additive