Patent · US Expired

Method for leaching sulfide-containing materials with microorganisms and use of sulphur-containing amino acids in leaching with microorganisms

US6767522B1 · kind B1 · utility

1Cited by

4References

13Claims

0Family size

Assignee

Hahn-Meitner-Institut Berlin GmbH · DE

Inventors

José Rojas-Chapana · Berlin, DE
Helmut Tributsch · Berlin, DE

Key dates

Filing date	Apr 13, 2001
Grant date	Jul 27, 2004
Priority date	—
Expiry date	Apr 13, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S423/17
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

The invention relates to an effective and environmentally safe process for the microbial leaching of sulfidic materials, particularly of sulfide ores such as pyrite, marcasite, chalcopyrite, bornite, or covelline, which process is characterized in that the aqueous leaching fluid is added with sulfur-containing amino acids or derivatives thereof. The invention is also directed to the use of sulfur-containing amino acids or derivatives thereof in the microbial leaching of sulfidic materials, particularly in pyrite leaching.

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