Details

Autor(en) / Beteiligte

• Bochevskaya, Ye. G.
• Abisheva, Z. S.
• Karshigina, Z. B.
• Sargelova, E. A.
• Kvyatkovskaya, M. N.
• Akchulakova, S. T.

Titel

Effect of the Temperature Conditions of Sulfation Process on Extraction of Rare-Earth Metals from Refractory Ore

Ist Teil von

• Metallurgist (New York), 2018-09, Vol.62 (5-6), p.574-586

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2018

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• Physical and chemical testing of sulfate product, obtained as a result of high-temperature treatment of ore from the Kundybai field with sulfuric acid mixture at 500°C revealed the presence of cerium oxide corresponding to natural cerianite (CeO 2 ). A mechanism of its formation is proposed, which includes a stage of cerium sulfate (Ce(SO 4 ) 2 ) formation followed by its dissociation to CeO 2 . The presence of this compound in the sulfate product allowed establishing the temperature required to further conduct the sulfation process and prevent cerianite formation.