Tamping Paste or Lining Paste is used in the Ferro Alloys & Allied Industries for the lining of the furnace, it is either Calcined Petroleum Coke (CPC) based or ECA Coal based and soft pitch as the binder.
The manufacturing process of Tamping Paste or Lining Paste is similar to the manufacturing process of Electrode Carbon Paste with differences in fraction sizes of CPC / ECA Coal and the content of Binder Pitch is lower then Electrode Carbon Paste.
The thermal insulation of the furnace pots is essential; therefore, tamping paste has low binder contents and must be heated before use. The working temperature during tamping is very important ideally the best working temperature during tamping is 130 °C to 150 °C.
| Property | Unit | ECA Base | CPC Base |
|---|---|---|---|
| Plasticity | % | As per customer's requirement | As per customer's requirement |
| Fixed Carbon | % | 83 min | 85 min |
| Volatile Matter | % | 12 max | 14 max |
| Ash | % | 5 max | 1 max |
| Apparent Density | gm/cc | 1.60 min | 1.60 min |
| Property | Unit | ECA Base | CPC Base |
|---|---|---|---|
| Fixed Carbon | % | 93 min | 99 min |
| 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 70 | 85 to 90 |