Method for separating minerals according to the luminescent properties thereof

The method relates to the field of mineral enrichment. It involves establishing threshold values of the intensity of a luminescence signal arising during the action of a pulse of exciting radiation on a material being separated and after a specified time following the end of the exciting pulse, and,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Evgeny Nikolaevich Vladimirov, Leonid Vasilievich Kazakov, Vladimir Iosifovich Tsvetkov
Format:	Patent
Sprache:	eng
Schlagworte:	MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS PERFORMING OPERATIONS POSTAL SORTING SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS SEPARATING SOLIDS FROM SOLIDS SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS SORTING SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTEDPIECE-MEAL, e.g. BY PICKING TRANSPORTING
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Beschreibung
Zusammenfassung:	The method relates to the field of mineral enrichment. It involves establishing threshold values of the intensity of a luminescence signal arising during the action of a pulse of exciting radiation on a material being separated and after a specified time following the end of the exciting pulse, and, during the processing of the recorded signal, first of all determining the value of the intensity of the luminescence signal, comparing the value obtained with the specified threshold value and, in the event of the threshold value being exceeded, processing the signal in order to determine the value of the selected separation criterion, comparing the processing result with the specified threshold value and isolating the mineral to be enriched from the material being separated if the comparison result satisfies the specified criterion; in the event of the value of the intensity of the luminescence signal after a specified time following the end of the exciting pulse being less than the threshold value thereof, determining the value of the intensity of the luminescence signal arising during the pulse of exciting radiation, comparing said value with the threshold value specified therefor and isolating the mineral to be enriched from the material being separated if the threshold value is exceeded.