Category | SiO2 (%) | Al2O3% | MgO% | Na2O% | CaO% | viscosité |
Drilling mud | 50 to 65 | 15 to 25 | 2 - 3 | >2 | < 1 | ≥ 30 |
Foundry | 50 to 65 | 15 to 25 | 2 - 3 | - | - | - |
Discoloring earth | 50 to 65 | 15 to 25 | 3 - 5 | - | < 1 | - |
Pelletizing | 50 to 65 | 15 to 25 | 2 - 3 | > 1 | - | - |