Classifying or sorting

Details Classifying or sorting Classifying or sorting

B - Operations, Transporting

07

C

B07C 5/342 (2006.01) G01N 21/65 (2006.01) G01N 21/87 (2006.01)

Patent

CA 2104470

In order to sort ore from associated mineral material, a method of classifying an object is provided, the method comprising feeding the object along a feed path, irradiating the object with infra-red radiation of a first wavelength, the radiation of the first wavelength being focussed onto an irradiation zone intersecting the feed path, the irradiation zone having a length in the vertical plane substantially greater than its width in the vertical plane. The intensity of radiation emitted by the object at at least one second wavelength different from the first wavelength is examined, the second wavelength being characteristic of a first class of object (in this case, the ore to be sorted from the mineral), whereby the classification of the object may be derived.

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