Separation of magnesite from ores which also contain calcite or

Details Separation of magnesite from ores which also contain calcite or Separation of magnesite from ores which also contain calcite or

1978-04-19

1980-06-10

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...

209576, B07C 502, B07C 534

Patent

active

042071755

ABSTRACT:
A method for the separation of magnesite from a particulate ore containing particles relatively rich in magnesite and particles relatively rich in dolomite and/or calcite, which comprises conditioning the ore with at least one coupling agent selected from saturated and unsaturated carboxylic acids containing from about 4 to about 22 carbon atoms, to selectively coat the calcite and/or dolomite in the ore to the substantial exclusion of the magnesite, in combination with providing at least one fluorescent dye to said coupling agent; radiating the conditioned ore to excite and induce fluorescence of the fluorescent dye to a degree sufficient to distinguish the coated particles from the non-coated particles and separating the fluorescing, coated particles from the non-fluorescing, non-coated particles.

REFERENCES:
patent: 1678884 (1928-07-01), Sweet
patent: 2967614 (1961-01-01), Nury et al.
patent: 3346111 (1967-10-01), Thompson et al.
patent: 3356211 (1967-12-01), Mathews
patent: 3472375 (1969-10-01), Mathews
patent: 3795310 (1974-03-01), Buchot
patent: 3901793 (1975-08-01), Buchot
patent: 3936188 (1974-02-01), Sawyer
patent: 3992287 (1976-11-01), Rhys

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