Ramming paste
Ramming paste
Cold-ramming low-contracting masses for aluminum electrolyers
Cold-ramming low-contracting masses are used for ramming interblock and peripheral joints of aluminum electrolyzers at temperatures of 25±10°C. In combination with the base block, the mass ensures the uniformity of the bottom lining in the electrolyzer. The composition of the mass guarantees the uniformity of all physical-chemical processes of baking and a low degree of expansion and contraction.
Cold-ramming mass properties
| PROPERTIES | VALUE |
|---|---|
| Apparent density of unbaked mass, g/cm3 | 1,50-1,65 |
| Apparent density of baked mass, g/cm3 | 1,38-1,50 |
| Compressive strength, MPa, min. | 10-25* |
| Open porosity of baked mass, % | 21 |
| Volume expansion, % | 0-2,5 |
| Degree of compaction, % | 55-75 |
| Contraction rating, max, % | 0,3 |
| Electrical resistivity, max, µΏm | 90 |
| Ash content, %, max, % | 3,5 |
| * the values difference between two mass batches shall not exceed 10 MPa. | |
Cold-ramming heat-conducting contact masses for aluminum electrolyers
Cold-ramming heat-conducting contact masses are designed for ramming gaps between the bloom and the cathode block in order to ensure mechanical adhesion and electrical contact between them.
Cold-ramming heat-conducting contact mass properties
| PROPERTIES | VALUE |
|---|---|
| Apparent density of unbaked mass, g/cm 3 | 1,55 |
| Compressive strength, MPa, min. | 12,0 |
| Thermal conductivity coefficient of unbaked mass, W/mK, min. | 7,0 |
| Electrical resistivity, µїm, max. |
55,0 |
| Coarseness of grain, mm, max. | 2,5 |
