Method and apparatus for sorting objects of ore by monitoring reflected radiation
US4600105A · kind A · utility
19Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1984 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Mar 23, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07C5/3425
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of ore sorting includes distinguishing ore objects or ore containing objects by the light reflected from a laser beam arranged to scan across each of the objects to be sorted. Where the surface of the object is transmitting to the light a halo is produced by certain objects caused by internal scattered reflections of the light. By monitoring the occurrence or degree of occurrences of halos clean distinction of respective objects can be made. In a particular application, the identification of the presence of quartz pebbles in rock specimens can be used for detecting and sorting gold containing objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.