Patent ID: 9239302
Filing Date: 2016-01-19
CPC Classification: G01N

Claim Text:
1. A method of analysing particles of ore which include a constituent, the method comprising the steps of: (a) exposing particles of the ore to x-radiation having a range of x-radiation energies from a source of x-radiation; (b) detecting x-radiation intensities with a detector for detecting x-ray radiation intensities at two different energy levels or at two different ranges of energies transmitted through the particles; and (c) determining the concentration of the constituent occurring in particles from the respective detected intensities by calculating a value (DE) indicative of the concentration of the constituent by calculating a ratio of first and second quantities related to detected first and second radiation intensities associated with first and second energy levels or first and second energy ranges and using at least one constant, and with at least one constant being selected so that an influence of thickness of the ore on the calculated value is reduced.