Table 5 Chemical analysis by XRF of the precipitate obtained after PGF treatment with Na2CO3 followed by leaching with citric acid
Analyte | Compound formula | Conc. (%) |
|---|---|---|
F | F | < 0.1 |
Na | Na2O | 0.1 |
Mg | MgO | < 0.1 |
Al | Al2O3 | < 0.1 |
Si | SiO2 | 1.8 |
P | P2O5 | 0.2 |
S | SO3 | 0.8 |
Ca | CaO | 35.1 |
Sr | SrO | 0.2 |
Ti | TiO2 | < 0.1 |
Fe | Fe2O3 | 0.6 |
Ni | NiO | < 0.1 |