Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...
Patent
1978-04-19
1979-09-25
Knowles, Allen N.
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Sorting special items or sorting by methods and apparatus...
209578, B07C 502, B07C 5342
Patent
active
041690451
ABSTRACT:
A method is disclosed for the separation of shale from run of mine (ROM) shale containing particles of shale and refuse, which comprises conditioning the ROM shale with a coupling agent capable of selectively coating the kerogen hydrocarbons in the particulate shale to the substantial exclusion of coating the non-hydrocarbonaceous refuse, which coupling agent is at least one carboxylic acid, preferably containing from about 5 to about 28 carbon atoms and a ketone. Combined with said coupling agent is a fluorescent dye in a quantity to make the coated particles of shale fluoresce upon excitation to a degree sufficient to distinguish the coated shale particles from the substantially non-coated refuse. Exciting (e.g. as with ultraviolet light) the fluorescent dye coupled to the shale particles induces fluorescence and enables separating the fluorescing, coated shale particles from substantially non-fluorescing, non-coated refuse particles.
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Messenger David F.
Moudgil Brij M.
Bisson B.
Knowles Allen N.
Occidental Research Corporation
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