Details

Autor(en) / Beteiligte

• Guo, W. T.
• Shi, K. H.
• Liu, X. K.
• Sun, Z. L.
• Liu, X. J.

Titel

Effects of Phosphorus Structures on the Crystallization Behavior of Rare Earth Phase in CaO–SiO2–CaF2–La2O3 Slag

Ist Teil von

• Transactions of the Indian Institute of Metals, 2024-03, Vol.77 (3), p.697-705

Ort / Verlag

New Delhi: Springer India

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• To promote the utilization of rare earth resources in metallurgical rare-earth-containing slag, the effect of P 2 O 5 on the morphology and structure of the rare earth crystalline phase in the CaO–SiO 2 –CaF 2 –La 2 O 3 slag was studied. The La 2 O 3 content being greater than 15%, the amount of rare earth crystal phase in the slag increased with the addition of P 2 O 5 . Due to the addition of P 2 O 5 , the crystal structure of the rare earth crystal phase changed to phosphosilicate. The relationship between phosphorus structures and the crystal structure of the rare earth phase was studied by Raman spectroscopy. The presence of interactions between the silicate network and the phosphate network was studied. La 3+ preferentially acted as a depolymerization agent for the silicate network rather than for the phosphate network structure. For the La 2 O 3 content of less than 10%, it is clear that P 2 O 5 promotes the crystal growth of the rare earth phase in the CaO–SiO 2 –CaF 2 –La 2 O 3 slag.