Patent ID: 8955918
Filing Date: 2015-02-17
Classification: E21B,E21C,G01N

Abstract:
1. A method for increasing the yield in a deposit comprising a rock which comprises a valuable mineral to be exposed by a comminution of the rock, and at least one further mineral, wherein the valuable mineral has a higher density than the at least one further mineral, the method comprising: performing a drilling operation using a drilling tool prior to an extraction of the rock, wherein the drilling operation generates drillings, forming an aerosol comprising the drillings and a gas stream, transferring the aerosol from the drilling tool to at least one air separator, performing a hydraulic classification of the drillings into at least two fractions, each comprising equal-falling particles of the drillings, determining a property belonging to at least one of the fractions, and setting a target degree of comminution of the rock based on the determined property.