Method of extracting metals from ore material
AssigneeKrupp Polysius AG
InventorsNorbert Patzelt, Johann Knecht
Life of this patent
Estimating the term…
Abstract
In this method according to the invention for extracting metals, starting ore material is subjected to material bed comminution and then leached by the addition of leaching fluid. In order to be able to ensure an optimal yield of metals even in the case of greatly differing particles sizes of the comminuted ore material, the comminuted ore material is divided into oversize material and fine material, whereupon oversize material is delivered to a heap leaching and fine material to a tank leaching.
Claims19
Method of extracting metals from ore material, wherein this ore material is subjected to material bed comminution (2) in the grinding gap (3) between two rolls (4, 5) which are pressed against one another with high pressure and can be driven in opposite directions and comminuted material is leached by the addition of leaching fluid, characterised in that comminuted material (6) from the material bed comminution (2) is divided into oversize material (8) and fine material (9) in the classification in a classification stage (7), whereupon at least a fraction of the oversize material is subjected to heap leaching (10) and at least a fraction of the fine material is subjected to tank leaching (12) using a stirring movement.
Dependencies are inferred from the claim text.