Patent · US Active

Materials, methods and techniques for generating rare earth carbonates

US11447397B1 · kind B1 · utility

1Cited by

2References

12Claims

0Family size

Assignee

Lynas Rare Earths Limited · AU

Inventors

Norazihan Zulkifli · FELDA Keembung Jengka 6, MY
Mohd Anis Shah Mohd Zainal · FELDA Keembung Jengka 6, MY
Luke Darbyshire · FELDA Keembung Jengka 6, MY
Peter Ryan · FELDA Keembung Jengka 6, MY
Aznor Yahya · FELDA Keembung Jengka 6, MY
Ermie Fadhullah Kassim · FELDA Keembung Jengka 6, MY

Key dates

Filing date	Dec 6, 2021
Grant date	Sep 20, 2022
Priority date	—
Expiry date	Dec 6, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Mixed rare earth carbonate may be prepared by mixing a rare earth sulfate solution with a precipitating agent comprising a first sodium carbonate (Na2CO3) solution, to form a first mixture, and generating a higher sulfate rare earth carbonate wet cake from the first mixture. The higher sulfate rare earth carbonate wet cake can be mixed with a second sodium carbonate (Na2CO3) solution to form a second mixture, and a lower sulfate rare earth carbonate can be generated from the second mixture.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.