Patent · US Active

Treatment of sulphidic materials

US8999274B2 · kind B2 · utility

0Cited by

4References

22Claims

0Family size

Assignee

Glencore Queensland Limited · AU

Inventors

Patrick Bowen · Durham, US
Michael Matthew Hourn · Brisbane, AU

Key dates

Filing date	Aug 8, 2012
Grant date	Apr 7, 2015
Priority date	—
Expiry date	Aug 8, 2032

Classification

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

Abstract

A process for treating a mixed sulphidic material containing lead sulphide and at least one other metal sulphide. The process includes the steps of subjecting the mixed sulphidic material to selective oxidation such that lead sulphide in the material is oxidised to form an oxidized lead compound while substantial oxidation of the at least one other metal sulphide is avoided, and separating the oxidized lead compound from the at least one other metal sulphide. The oxidized lead compound may be separated by flotation wherein the oxidized lead compound reports to the tailings and the at least one other metal sulphide reports to the concentrate (froth).

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