Tamping Paste

Tamping Paste / Thermal Paste is manufactured by screening the CPC and or ECA to different fractions and then pulverizing the same. After the pulverization the TP is stored separately. After this, predetermined quantities of different fractions of the TP are weighed and transferred to the Sigma Mixer where it is heated to a predefined temperature by thermic fluid. The required quantity of Binder is also weighed and added into the Mixer. The mixing is continued for a specific period known as the Mixing Cycle. At the end of the Mixing Cycle, the mixed material is dumped into the mould box for casting into blocks which are then made ready for shipment.

The thermal insulation of the furnace pots is essential. Due to this it is important that the Tamping Paste does not have any excess binder and fills the walls of the furnace, maintaining proper insulation and minimizing the heat loss.

Green Paste Volatile matter Fixed Carbon Ash Plasticity Apparent Density Binder Content Baked Paste at 1000 deg.Centigrade 12 % max 87% Max 1.0% Max 8-15% 1.55gm/cc Min 19-21% Apparent Density Electrical Resistivity Compressive Strength Porosity 1.35 gms/cc Max 90 Ohm- meter Max 150kg/cm2 Min 35% Max

Green Paste Volatile matter Fixed Carbon Ash Plasticity Apparent Density Binder Content Baked Paste at 1000deg Centigrade 11% max 84% max 5.5% Max 5- 10 % 1.55gm/cc Min 15-17% Apparent Density Electrical Resistivity Compressive Strength 1.36 gms/cc Max 80 Ohm- meter Max 200kg/cm2 Min

Electrode Carbon Paste is produced by screening the CPC and or ECA to different fractions and pulverizing and storing it separately. Immediately after this the predetermined quantities of different fractions are weighed and transferred to a Sigma Mixer, which is heated to about 150 degree Centigrade by Thermic Fluid. The required quantity of the Binder is also weighed separately and the same is added to the Mixer. The mixing is continued for a particular period known as the Mixing Cycle. At the end of the Mixing Cycle, the mixed material is dumped on the mould box for casting into blocks for shipment.