Patent · US Active

Method for the hydrometallurgical recovery of lithium from the fraction of used galvanic cells containing lithium, iron and phosphate

US9677153B2 · kind B2 · utility

2Cited by

1References

21Claims

0Family size

Assignee

ROCKWOOD LITHIUM GMBH · DE

Inventors

David Wohlgemuth · Frankfurt, DE
Mark Andre Schneider · Eckartsberga, DE
Rebecca Spielau · Eppstein, DE
Johannes Willems · Zürich, CH
Martin Steinbild · Frankfurt, DE

Key dates

Filing date	Oct 9, 2013
Grant date	Jun 13, 2017
Priority date	—
Expiry date	Nov 19, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for the hydrometallurgical recovery of lithium from the fraction of used galvanic cells containing lithium, iron and phosphate is disclosed. According to the method, lithium-iron-phosphate-containing fraction is introduced into sulfuric acid and/or hydrochloric acid, and hydrogen peroxide is added in an amount that is at least stoichiometric relative to the iron content to be oxidized of the lithium-iron-phosphate-containing fraction.

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