Patent · US Expired

Method and installation for extracting gold from gold ore

US4960461A · kind A · utility

10Cited by

6References

9Claims

0Family size

Assignee

Klockner-Humboldt-Deutz AG · DE

Inventors

Mohammed Esna-Ashari · Bensberg, DE
Hans Kellerwessel · Aachen, DE
Ludwig Gemmer · Cologne, DE
Gert-Helge Hamacher · Neunburg vorm Wald, DE

Key dates

Filing date	Oct 27, 1988
Grant date	Oct 2, 1990
Priority date	—
Expiry date	Oct 27, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S423/15
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a method and apparatus for extracting gold from gold ore. The apparatus and process save capital and operating costs in the extracting of gold from gold ore and include comminution and leaching of the ore, and more particularly the apparatus and process reduce the costs for the ore grinding, and make a fine ore grinding superfluous without having to accept a reduction in the gold yield during leaching. The gold ore is subjected to a product bed stressing and interparticle crushing in the nip of a high-pressure roller press before being leached and the product that has been product-bed-comminuted and subjected to interparticle crushing and the product agglomerates thereby formed are piled on a heap that is sprayed with a lixivium.

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