Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
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.