| 摘要 |
<p>A hybrid method and system for applying a leach solution to ore in the process of heap leaching includes both surface solution delivery techniques and sub-surface solution application to improve solution uniformity and metallurgical performance of a leaching process. The invention allows for controlled application of leach solution with a hydraulic head applied that can be adjusted or varied depending on the conditions of the ore from negative, atmospheric or positive pressure, while distributing leaching solution in a uniform manner independent of surface variability with respect to elevation and infiltration capacity of the ore surface. The invention has particular application to low permeability ores like high clay content copper, silver, uranium, and gold ores and nickel/cobalt laterite, but can be used in any heap leach application where control must be maintained with respect to surface ponding, stability and accessibility, and uniform reagent distribution, resulting in improved leaching performance.</p> |
