Patent · US Active

Recovering lead from a mixed oxidized material

US9322104B2 · kind B2 · utility

0Cited by

16References

15Claims

0Family size

Assignees

University of British Columbia · CA
BASF SE

Inventors

Stefan Fassbender · Speyer, DE
David Dreisinger · Delta, CA
Zhenghui Wu · Vancouver, CA

Key dates

Filing date	Nov 11, 2013
Grant date	Apr 26, 2016
Priority date	—
Expiry date	Apr 5, 2034

Classification

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

Abstract

In an example of a method for recovering lead from a mixed oxidized lead material, methane sulfonic acid is selected as a leaching acid for the mixed oxidized lead material. The mixed oxidized lead material is exposed to a solution including the methane sulfonic acid, which leaches lead from any of a lead oxide or a lead carbonate in the mixed oxidized lead material, and generates a liquid leachate including a lead-methane sulfonate salt. The liquid leachate is purified, and lead is recovered from the purified liquid leachate using electrolysis.

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