Cylindrical electrode paste
Cylinder electrode paste is primarily composed of a carefully formulated blend of calcined petroleum coke, coal tar pitch, and various additives. Calcined petroleum coke, derived from petroleum coke through a high-temperature carbonization process, is the primary carbonaceous material used in the paste. It provides the necessary carbon content and conductivity required for the electrodes.
Coal tar pitch, a byproduct of the distillation of coal tar, acts as the binder in the paste. It holds the coke particles together, providing mechanical strength to the electrode during the manufacturing process and in-service conditions. The composition of the paste may also include additional components such as anthracene oil, synthetic graphite, and various proprietary additives to enhance specific properties.
Cylinder electrode paste exhibits several key properties that make it suitable for its intended applications. These properties include:
Electrical Conductivity: The high carbon content of the paste, derived from calcined petroleum coke, provides excellent electrical conductivity. This property ensures efficient transfer of electrical energy during the electrolytic process.
Mechanical Strength: The coal tar pitch binder gives the paste adequate mechanical strength to withstand the rigorous manufacturing process and the operational conditions within the electrolytic cell.
Adhesion: Cylinder electrode paste has good adhesion properties, allowing it to adhere to the metallic support structure of the electrode. This adhesion ensures a stable and robust electrode assembly.
Thermal Resistance: The paste exhibits high thermal resistance, enabling it to withstand the elevated temperatures experienced during the electrolysis process.
| project | unit | Sealed paste | Standard electrode paste | Chemical electrode paste | |||
|---|---|---|---|---|---|---|---|
| No. 1 | No.2 | No.2 | No.2 | No.3 | |||
| Ash or less | % | 4.0 | 6.0 | 7.0 | 9.0 | 11.0 | 11.0 |
| Volatile flux or less | % | 12.0～15.5 | 12.0～15.5 | 9.5～13.5 | 11.5～15.5 | 11.5～15.5 | 11.0～15.5 |
| The compressive strength or greater | MPa | 18.0 | 17.0 | 22.0 | 21.0 | 20.0 | 18.0 |
| The resistivity or less | μΩm | 65 | 75 | 80 | 85 | 90 | 90 |
| Volume density p G/cm after |
g/cm³ | 1.38 | 1.38 | 1.38 | 1.38 | 1.38 | 1.38 |
| elongation | % | 5～20 | 5～20 | 5～30 | 15～40 | 15～40 | 5～25 |
| brand project |
Ash or less | Volatile flux or less | The compressive strength or greater | The resistivity or less | Volume density p G/cm after |
elongation |
|---|---|---|---|---|---|---|
| No.1 | 3.0 | 12-15.5 | 23 | 65 | 1.46 | 6-20 |
| No.2 | 3.0 | 12-15.5 | 23 | 75 | 1.43 | 5-20 |
