G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 23/20 (2006.01) B07C 5/34 (2006.01) B07C 5/342 (2006.01) G01N 23/207 (2006.01) G01N 35/00 (2006.01)
Patent
CA 2245141
The invention concerns a method of sorting diamond-containing particles on-line from gangue particles. In the method, the particles (12) are subjected to irradiation by an X-ray or thermal neutron beam (20) from a source (18). A detector (22), arranged at a predetermined orientation to the incident beam (20), detects radiation which is elastically scattered by each particle. A diffraction spot pattern is then derived from the detected radiation and is compared, by a computer (24), with a diffraction spot pattern for diamond. A determination is made whether there is correlation between the patterns which is indicative of the presence, in the particle, of diamond. When such correlation exists, the relevant particles are separated from the other particles.
Guzek Jacek
Le Roux Stephanus Dawid
Over George William
Tapper Ulf Anders Staffan
Van Der Merwe Daniel Jacobus
de Beers Consolidated Mines Limited
Gowling Lafleur Henderson Llp
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