Patent ID: 8766129
Filing Date: 2014-07-01
Classification: B07C

Abstract:
1. A method for separating minerals using X-ray fluorescence, comprising the steps of: (a) irradiating material in a segregated material flow moving along a path with a plurality of pulses of excitation radiation within a preset section of the path of, (b) recording a signal representing an intensity of the mineral fluorescence, wherein the recording of the intensity includes the measurement of the intensity of the fluorescence signal during a preset time after the end of each excitation radiation pulse, (c) establishing a threshold of fluorescence signal intensity in a preset time after the end of the excitation radiation pulses, (d) storing a derived intensity value for each fluorescence signal provided by the signal that exceeds the threshold, (e) comparing of the value measured in a current time period with the values derived in previous time periods, (f) determining of a time period when the derived intensity value reaches a peak value (g) determining a plurality of concentration parameters by processing of the fluorescence signal, wherein the value of the measured intensity reached a peak therefor, (h) comparing the plurality of concentration parameters with a preset value range and separating a concentration of the minerals from the segregated material flow when the concentration parameters are within the preset value range.