Patent · US Active

Process for purifying and concentrating rare earths from phosphogypsum

US12139775B2 · kind B2 · utility

0Cited by

1References

15Claims

0Family size

Assignee

OCP SA · MA

Inventors

Hamid Mazouz · Oulad Abbou, MA
Rachid Boulif · El Jadida, MA
Essaid Bilal · Saint-Étienne, FR

Key dates

Filing date	Sep 30, 2019
Grant date	Nov 12, 2024
Priority date	—
Expiry date	Dec 12, 2041

Classification

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

Abstract

The present invention relates to a process for purifying and concentrating rare earths contained in phosphogypsum, characterised in that it comprises the following steps of:

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