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Machine translation
1. (WO1979000950) SEPARATION OF CALCIUM-CONTAINING MATERIAL FROM ORE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000950    International Application No.:    PCT/US1979/000246
Publication Date: 15.11.1979 International Filing Date: 16.04.1979
IPC:
B03B 1/04 (2006.01), B03B 13/04 (2006.01), B07C 5/342 (2006.01)
Applicants:
Inventors:
Priority Data:
897780 19.04.1978 US
Title (EN) SEPARATION OF CALCIUM-CONTAINING MATERIAL FROM ORE
(FR) SEPARATION DE MATERIAU CONTENANT DU CALCIUM DU MINERAI
Abstract: front page image
(EN)A method for the separation of calcium-containing limestone ore containing particles of calcite (CaCO3), dolomite (CaMg(CO3)2), and gangue, including magnesite (MgCO3) and siliceous materials. The method comprises conditioning the limestone ore with at least one coupling agent selected from saturated and unsaturated carboxylic acids containing from about4 to about 22 carbon atoms, or at least one coupling agent selected from the group consisting of aliphatic amines containing from about 8 to about 22 carbon atoms, and beta amines containing from about 7 to about 21 carbon atoms, to selectively coat the calcium-containing limestone or the gangue in the ore to the substantial exclusion of the other 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.
(FR)Methode de separation du minerai calcaire contenant du calcium, contenant des particules de calcite (CaCO3), de dolomite (CaMg(CO3)2), et la gangue, comprenant de la magnesite (MgCOs) et des materiaux siliceux. La methode comprend le conditionnement du minerai calcaire avec au moins un agent d"accouplement choisi pari des acides carboxyliques satures et non-satures contenant de 4 a 22 atomes de carbone environ, ou au moins un agent d"accouplement choisi pari le groupe consistant en amines aliphatiques contenant de 8 a 22 atomes de carbone environ, et des amines beta contenant de 7 a 21 atomes de carbone environ, pour enrober selectivement le calcaire ou la gangue contenant du calcium a l"exclusion du minerai ne contenant pas de calcium, ledit agent d"accouplement etant combine a une coloration fluorescente; l"irradiation du minerai conditionne pour exciter et donner la fluorescence au colorant fluorescent jusqu"a un degre suffisant pour distinguer les particules enrobees des particules non recouvertes et separer les particules fluorescentes revetues des particules non fluorescentes et non revetues.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)